Andreas, K.; Noneder, J.; Engel, U.; Merklein, M.:
Application of cemented carbide based forming tools in cold forging.
In: Bouzakis, K.-D.; Bobzin, K.; Denkena, B.; Merklein, M. (Edt.): Proc. 11th International Conference THE "A" Coatings in Manufacturing Engineering, (2013), Aachen, accepted

Schrader, T.; Weschta, M.; Engel, U.; Tremmel, S.; Merklein, M.; Wartzack, S.:
Microstructured surfaces in highly loaded EHD-contacts – manufacturing and tribological performance.
In: Bouzakis, K.-D.; Bobzin, K.; Denkena, B.; Merklein, M. (Edt.): Proc. 10th International Conference THE "A" Coatings in Manufacturing Engineering, (2013), Aachen: Shaker Verlag, pp. 99-109

Reiß, A.; Engel, U.; Merklein, M.:
Investigation on the influence of manufacturing parameters on the fatigue strength of components.
In: De Sousa, R. A.; Valente, R. (Edt.): Key Engineering Materials, (2013), Zürich-Durnten: Trans Tech Publications, pp. 280-286

Andreas, K.; Merklein, M.; Engel, U.:
Fatigue Behavior of Cemented Carbide Based Forming Tools.
In: Proceedings of the 18th Plansee Seminar, (2013), Reutte, accepted

Andreas, K.; Engel, U.; Merklein, M.:
Influence of Grinding on the Surface Properties of Cemented Carbides.
In: Key Engineering Materials, 504-506(2012), Durnten-Zurich: Trans Tech Publications, pp. 1353-1358

Li, H.; Dong, X.; Shen, Y.; Zhou, R.; Diehl, A.; Hagenah, H.; Engel, U.; Merklein, M.; Cao, J.:
Analysis of microbending of CuZn37 brass foils based on strain gradient hardening models.
In: Journal of Materials Processing Technology, 212(2012)3, Elsevier, pp. 653-661

Vierzigmann, H.; Koch, J.; Merklein, M.; Engel, U.:
Material Flow in Sheet-Bulk Metal Forming.
In: Key Engineering Materials , 504-506 (2012), Durnten-Zurich: Trans Tech Publications, pp. 1035-1040

Merklein, M.; Stellin, T.; Engel, U.:
Experimental Study of a Full Forward Extrusion Process from Metal Strip.
In: Key Engineering Materials, 504-506(2012), Switzerland: Trans Tech Publications, pp. 587-592

Hildering, S.; Becsi, L.; Engel, U.; Merklein, M.; Mescheder, U.:
Experimental investigations on high-precision microcutting of copper foils with microfabricated silicon punches.
In: Shore, P.; Spaan, H.; Burke, T. (Edt.): Proceedings of the 12th International Conference of the European Society for Precision Engineering and Nanotechnology, 2(2012), Cranfield: euspen, pp. 177-180

Merklein, M.; Engel, U.; Noneder, J.; Reiß, A.:
FE-basierte Prozess- und Werkzeugauslegung zur Herstellung von Hochleistungsbauteilen mit dem Ziel einer gezielten Einstellung von Bauteileigenschaften.
In: Schafstall, H.; Wohlmuth, M.; simufact engineering GmbH (Edt.): Tagungsband 13. RoundTable - Simulation in der Umformtechnik, (2012), Bamberg: Meisenbach Verlag , pp. 291-302

Merklein, M.; Schrader, T.; Engel, U.:
Wear behavior of PVD-Coatings.
In: Tribology in industry, 34(2012)2, Kragujevac, Serbia: Faculty of Engineering, University of Kragujevac, Serbia, pp. 51-56

Andreas, K.; Merklein, M.; Engel, U.:
Werkzeugherstellung in der Kaltmassivumformung - Einfluss der Werkzeugoberfläche auf die tribologischen Bedingungen.
In: wt Werkstattstechnik online, 10(2012), Düsseldorf: Springer Verlag, pp. 672-677

Schrader, T.; Engel, U.; Merklein, M.:
Influences on wear load in cup extrusion processes.
In: Yoshida, Y. (Edt.): Proc. of the 7th ICFG Workshop on Process Simulation in Metalforming, (2012), Gifu, Japan, published on CD

Stellin, T.; Merklein, M.; Engel, U.:
Experimental and Numerical Investigation on a Full Forward Extrusion Process from Metal Strip.
In: Humbert Noll, Nadja Adamovic and Stefan Dimov (Edt.): Proceedings of the 9th International Conference on Multi-Material Micro Manufacture, (2012), Singapore: Research Publishing, pp. 163 - 166

Schrader, T.; Engel, U.; Geiger, M.; Merklein, M.:
Mehrlagenbeschichtungen für den beanspruchungsgerechten Einsatz bei Kaltmassivumformwerkzeugen.
In: Faulstich, M.; Geiger, M.; Kukla, H.; Wolf, G. (Edt.): Moderne Beschichtungen zum Verschleißschutz von Werkzeugen, (2012), Sulzbach-Rosenberg: DORNER PrintConcept, pp. 181-208

Kroiß, T.; Engel, U.:
Optimization of tool and process design for the cold forging of net-shape parts by simulation.
In: Dekena, B.; Hollmann, F. (Edt.): Process Machine Interactions, (2012), Heidelberg, New York, London: Springer, pp. 419-438

Kroiß, T.; Engel, U.; Merklein, M.:
Comprehensive approach for process modeling and optimization in cold forging considering interactions between process, tool and press.
In: Tekkaya, A. E.; Allwood, J. M. (Edt.): Journal of Material Processing Technology, (2012), Amsterdam: Elsevier, in print

Andreas, K.; Merklein, M.; Engel, U.:
Influence of Combined Hard and Fine Machining on the Surface Properties of Cemented Carbides.
In: Tribology in industry, 34(2012)3, Kragujevac, Serbia: Faculty of Engineering, University of Kragujevac, Serbia, pp. 119-127

Noneder, J.; Merklein, M.; Engel, U.; Frank, M.; Frank, J.; Ritzenhoff, R.; Egerer, E.:
Hochleistungsbauteile durch Kaltmassivumformung hochfester, druckaufgestickter Stähle.
In: UTF-Science, (2012)III, Bamberg: Meisenbach Verlag, published

Biermann, D.; Merklein, M.; Engel, U.; Tillmann, W. ; Surmann, T. ; Hense, R.; Herper, J. ; Koch, J.; Krebs, E. ; Vierzigmann, H.:
Umformwerkzeuge in der Blechmassivumformung.
In: Merklein, M.; Bach, Fr.-W.; Tekkaya, A. E. (Edt.): 1. Workshop Blechmassivumformung, (2011), Bamberg: Meisenbach, pp. 119-138

Vierzigmann, H.; Engel, U.:
Funktionale Oberflächencharakterisierung.
In: Roll, K.; Bogon, P.; Ziebert, C. (Edt.): Innovative Methoden zur Auslegung von Umformwerkzeugen im Fahrzeugbau (IMAUF), Fortschritts-Berichte VDI, 2(2011)679, Düsseldorf: VDI Verlag, pp. 177-206

Merklein, M.; Andreas, K.; Engel, U.:
Influence of machining process on residual stresses in the surface of cemented carbides.
In: Procedia Engineering, 19(2011), Amsterdam: Elsevier, pp. 252-257

Vierzigmann, H.; Merklein, M.; Engel, U.:
Friction Conditions in Sheet-Bulk Metal Forming.
In: Procedia Engineering, 19(2011), Elsevier, pp. 377–382

Becsi, L.; Hildering, S.; Mescheder, U.; Engel, U.:
Mikrostanzen - Einsatz von einkristallinem Silizium als Werkzeugwerkstoff für Schneidprozesse von dünnen Folien.
In: Tagungsband 4. Mikrosystemtechnik-Kongress Darmstadt, (2011), Berlin: VDE Verlag GmbH, pp. 531-534

Noneder, J.; Engel, U.; Merklein, M.:
Tool design for cold forging of high nitrogen steels.
In: Liewald, M. (Edt.): Proceedings of the 12th International Cold Forging Congress, (2011), Stuttgart: Institute for Metal Forming Technology, pp. 9-13

Hauer, F.; Vierzigmann, H.; Willner, K.; Engel, U.:
Numerical simulation of friction in metal forming using a halfspace model.
In: Menary, G. (Edt.): The 14th International ESAFORM Conference on Material Forming, (2011), pp. 1741-1747

Vierzigmann, H.; Merklein, M.; Engel, U.:
Tribological Conditions in Sheet-Bulk Metal Forming.
In: 2nd International Conference of Engineering Against Fracture, (2011), published

Noneder, J.; Merklein, M.; Engel, U.:
On the evaluation of strength of cold forged components made of high nitrogen steel.
In: Proceedings of the 3rd International Conference on Steels in Cars and Trucks, (2011), Düsseldorf: Verlag Stahleisen GmbH, pp. 58-65

Merklein, M.; Ndzomssi Zébazé, F.; Engel, U.:
Investigation of the Influence of Tool Geometry on Effective Strain Distribution in Full Forward Extrusion.
In: Menary, G. (Edt.): The 14th International ESAFORM Conference on Material Forming, 1353(2011), AIP Conference Proceedings, pp. 419-424

Andreas, K.; Merklein, M.; Engel, U.:
Influence of combined hard and fine machining on the surface properties of cemented carbides.
In: Bouzakis, K.-D.; Bobzin, K.; Denkena, B.; Merklein, M. (Edt.): Proc. 9th International Conference THE "A" Coatings in Manufacturing Engineering, (2011), Thessaloniki, pp. 113-122

Hildering, S.; Becsi, L.; Engel, U.; Merklein, M.; Mescheder, U.:
High-precision blanking of thin copper foils using uncoated and coated monocrystalline silicon punches.
In: Kück, H.; Reinecke, H.; Dimov, S. (Edt.): Proceedings of the 8th International Conference on Multi-Material Micro Manufacture, (2011), Research Publishing, pp. 191-195

Merklein, M.; Schrader, T.; Engel, U.:
Wear behavior of PVD-coatings.
In: Bouzakis, K.-D.; Bobzin, K.; Denkena, B.; Merklein, M. (Edt.): Proc. 9th International Conference THE "A" Coatings in Manufacturing Engineering, (2011), Thessaloniki, pp. 227-234

Schrader, T.; Merklein, M.; Engel, U.:
Application based PVD-coatings for cold forging tools.
In: Akkök, M.; Budak, E.; Firat, M.; Kaftanoglu, B. (Edt.): Proc. 6th International Conference and Exhibition on Design and Production of Machines and Dies / Molds, (2011), Ankara: MATIM, pp. 227-234

Merklein, M.; Stellin, T.; Engel, U.:
Simulation of a Full Forward Extrusion Process from Metal Strip.
In: Menary, G. (Edt.): The 14th International ESAFORM Conference on Material Forming, 1353(2011), AIP Conference Proceedings, pp. 493-498

Li, H.; Dong, X.; Wang, Q.; Shen, Y.; Diehl, A.; Hagenah, H.; Engel, U.; Merklein, M.:
Determination of material intrinsic length and strain gradient hardening in microbending process.
In: International Journal of Solids and Structures, 1(2011)48, Elsevier, pp. 163-174

Hildering, S.; Engel, U.; Merklein, M.:
Use of Monocrystalline Silicon as Tool Material for Highly Accurate Blanking of Thin Metal Foils.
In: Menary, G. (Edt.): The 14th International ESAFORM Conference on Material Forming, AIP Conference Proceedings 1353, (2011), pp. 481-486

Engel, U.; Groenbaek, J.; Hinsel, C.; Kroiß, T.; Meidert, M.; Neher, R.; Räuchle, F.; Schrader, T.:
Tooling Solutions for Challenges in Cold Forging.
In: UTF science, (2011)3, Bamberg: Meisenbach Verlag, pp. 1-24

Li, H.; Dong, X.; Wang, Q.; Shen, Y.; Diehl, A.; Hagenah, H.; Engel, U.; Merklein, M.:
Size effects of CuZn37 brass foil in microforming.
In: Material Science and Technology, 19(2011)4, pp. 15-19

Li, H. Z.; Dong, X. H.; Shen, Y.; Diehl, A.; Hagenah, H.; Engel, U.; Merklein, M.:
Size effects on springback behaviors due to plastic strain gradient hardening in microbending process of pure aluminum foils.
In: Journal of Materials science and Engineering A, 257(2010)16-17, Elsevier, pp. 4497-4504

Schrader, T.; Engel, U.; Merklein, M.:
Tribological characterization of PVD-coatings.
In: Key Engineering Materials, 438(2010), Zurich, Switzerland: Trans Tech Publications, pp. 179-186

Merklein, M.; Noneder, J.; Engel, U.:
Fließkurvenermittlung für die Kaltmassivumformung druckaufgestickter Stähle.
In: Pohl, M. (Edt.): Proceedings Tagung Werkstoffprüfung, (2010), Düsseldorf: Stahleisen GmbH, pp. 353-358

Noneder, J.; Merklein, M.; Engel, U.:
Vergleich verschiedener Verfahren zur Fließkurvenaufnahme im Hinblick auf die Prozess- und Werkzeugauslegung bei der Kaltmassivumformung druckaufgestickter Stähle.
In: R. Kawalla (Edt.): Proceedings AutoMetFORM / SFU 2010, (2010), Freiberg, pp. 333-345

Groenbaek, J.; Engel, U.; Hinsel, C.; Kroiß, T.; Meidert, M.; Neher, R.; Räuchle, F.; Schrader, T.:
Tooling Solutions for Challenges in Cold Forging.
In: Groche, P. (Edt.): 43rd ICFG Plenary Meeting 2010, (2010), Darmstadt: Institut für Fertigungsforschung e. V., pp. 112-130

Kroiß, T.; Engel, U.; Merklein, M.:
Simulation-Based Determination of Deflection Characteristic of Tooling System and its Modeling in FE Simulation of Cold Forging Process.
In: K. Mori et al. (Edt.): steel research international (special edition Metal Forming 2010), 81(2010)9, Weinheim: Wiley-VCH Verlag GmbH & Co. KGaA, pp. 318-321

Hildering, S.; Engel, U.:
A novel approach for high-precision blanking of thin metal foils using monocrystalline silicon as tool material.
In: Fillon, B.; Khan-Malek, C.; Dimov, S. (Edt.): Proceedings of the 7th International Conference on Multi-Material Micro Manufacture, (2010), Research Publishing, pp. 216-219

Kroiß, T.; Engel, U.; Merklein, M.:
Modeling of the Behavior of a Cold Forging Process Considering the Deflection of Tooling System and Press.
In: Proc. 2nd Int. Conf. on Process Machine Interactions (PMI), (2010), ISBN: 978-0-9866331-0-2, published on CD

Kroiß, T.; Engel, U.; Merklein, M.:
Process Modeling In Cold Forging Considering The Process-Tool-Machine Interactions.
In: Barlat, F.; Moon, Y. H.; Lee, M.-G. (Edt.): Proc. of the 10th Int. Conf. on Numerical Methods in Industrial Forming Processes; AIP Conference Proceedings 1252, (2010), Melville: American Institute of Physics, pp. 312-319

Eichenhüller, B.; Engel, U.; Geiger, M.:
Microforming and investigation of parameter interactions.
In: Production Engineering, 4(2010)2-3, Berlin, Heidelberg: Springer, pp. 135-140

Vierzigmann, H.; Merklein, M.; Engel, U.:
Tailored Surfaces in Sheet-Bulk Metal Forming.
In: Felder, E.; Montmitonnet, P. (Edt.): Proc. 4th International Conference on Tribology in Manufacturing Processes (ICTMP), 2(2010), Paris: Transvalor - Presses des MINES, pp. 541-550

Schrader, T.; Merklein, M.; Engel, U.:
Qualification of a new test for wear investigation on coated tools.
In: Felder, E.; Montmitonnet, P. (Edt.): Proc. 4th International Conference on Tribology in Manufacturing Processes (ICTMP), 1(2010), Paris: Transvalor - Presses des MINES, pp. 303-312

Schrader, T.; Engel, U.; Merklein, M.:
Tribological characterization of PVD-coatings.
In: Merklein, M.; Bach, F.-W.; Bouzakis, K.-D.; Denkena, B.; Geiger, M.; Toenshoff, H.-K. (Edt.): Proc. 8th International Conference THE Coatings in Manufacturing Engineering, 438(2010), Zurich, Switzerland: Trans Tech Publications Ltd, pp. 179-186

Dimov, S.; Matthews, C.W.; Brousseau, E.; Bigot, S.; De Grave, A.; Fillon, B.; Weinzierl, M.; Engel, U.; Johander, P.; Jung, E.; Kirby, P.B.; Mattson, L.; Richter, M.:
4M Network of Excellence, Progress Report 2009.
In: Saile, V.; Ehmann, K.; Dimov, S. (Edt.): 4M/ICOMM 2009, Proceedings of the Global Conference on Micro Manufacture, (2009), Wakefield, UK: The Charlesworth Group, pp. 1-10

Onyancha, R.M.; Kinsley, B.L.; Engel, U.:
Development of a new analytical model for plane strain microbending.
In: Ehmann, K.; Dimov, S. (Edt.): 4M/ICOMM 2009, Proceedings of the Global Conference on Micro Manufacture , (2009), Wakefield, UK: The Charlesworth Group, pp. 305-308

Weidel, S.; Engel, U.; Merklein, M.; Geiger, M.:
Basic investigations on boundary lubrication in metla forming processes by in situ observation of the real contact area.
In: Production Engineeringng, 10(2009)100, Berlin, Heidelberg, Deutschland: Springer Verlag, in print

Kroiß, T.; Engel, U.:
FE-Based Modeling of Interactions Between Cold Forging Process, Tooling System and Force Controlled Press.
In: Gantar, G. (Edt.): ICIT&MPT 2009, Proc. of the 7th Int. Conf. on Industrial Tools and Material Processing Technologies, Oktober 4-7, Ljubljana, Slovenia, (2009), Celje: TECOS, pp. 293-300

Eichenhüller, B.; Engel, U.:
Investigation of effects and parameter interactions in metal microforming processes.
In: SAILE, V.; EHMANN, K.; DIMOV, S. (Edt.): 4M/ICOMM 2009, Proc. Global Conf on Micro Manufacture (incorp. 5th Int. Conf. on Multi-Material Micro Manufacture 4M and 4th Int. Conf. on Micro Manufacturing ICOMM), (2009), Wakefield, UK: The Charlesworth Group, pp. 245-248

Merklein, M.; Engel, U.; Vierzigmann, H.:
Novel setup for the investigation of tribological behavior of sheet metal surfaces.
In: International Journal of Material Forming, 2(2009)1, Paris: Springer, pp. 233-236

Diehl, A.; Vierzigmann, H.; Engel, U.:
Characterisation of the mechanical behaviour and the forming limits of metal foils using a pneumatic bulge test .
In: International Journal of Material Forming, 2(2009)1, Paris: Springer, pp. 605-608

Li, H. Z.; Dong, X. H.; Shen, Y.; Diehl, A.; Hagenah, H.; Engel, U.; Merklein, M.:
Influence of the plasticity strain gradient on springback in micro-bending process of metal foils.
In: Chinese Society of Mechanical Engineering (Edt.): Proceedings of The 2nd Asia Conference on micro/nano sized technology (AWMFT-2009), (2009), Changsha, P.R. China, pp. 602-606

Diehl, A.; Engel, U.:
Grenzformänderung metallischer Folien.
In: wt Werkstatttechnik online, 12(2008)11, Düsseldorf: Springer Verlag, pp. 982-987

Weidel, S.; Engel, U.:
Characterisation of the flattening behaviour of modelled asperities.
In: Wear, (2008)266, pp. 596-599

Weidel, S.; Engel, U.; Geiger, M.:
Physical modeling of surface asperities - the impact of liquid lubricant on the real contact area.
In: Yang, D.Y. (Edt.): Proceedings of the 9th International Conference on Technology of Plasticity ICTP, (2008), pp. 429-434

Diehl, A.; Staud, D.; Engel, U.:
Mechanical Characterisation of Metal Foils by Hydraulic Bulge Test.
In: steel research international 79, Special Edition Metal Forming Conference 2008 , 1(2008), Düsseldorf, Deutschland: Verlag Stahleisen GmbH, pp. 332-339

Diehl, A.; Staud, D.; Engel, U.:
Investigation of the mechanical behaviour of thin metal sheets using the hydraulic bulge test.
In: Menz, W.; Dimov, S. (Edt.): Proceedings of the 4th International Conference on Multi-Material Micro Manufacture, (2008), Dunbeath, Scotland, UK: Whittles Publishing, pp. 195-198

Diehl, A.; Engel, U.; Geiger, M.:
Influence of microstructure on the mechanical properties and the forming behaviour of very thin metal foils.
In: The International Journal of Advanced Manufacturing Technology, (2008)online, published

Geiger, M.; Arbak, M.; Engel, U.:
Investigations on Forming Limits within Hot Stamping.
In: Production Engineering, 4(2008)2, pp. 409-415

Jeswiet, J.; Geiger, M.; Engel, U.; Kleiner, M.; Schikorra, M.; Duflou, J.; Neugebauer, S.; Bariani, P.; Bruschi, S.:
Metal forming progress since 2000.
In: CIRP Journal of Manufacturing Science and Technology, (2008)1, Elsevier Verlag, pp. 2-17

Geißdörfer, S.; Engel, U.; Geiger, M.:
A Novel Approach for In-Situ Observation of Local Deformation Behaviour at Micro Scale.
In: Yang, D.Y. (Edt.): Proceedings of the 9th International Conference on Technology of Plasticity, (2008)9, pp. 199-204

Geißdörfer, S.; Engel, U.; Geiger, M.:
Simulation of Microforming Processes by Applying a Mesoscopic Model.
In: Menz, W.; Dimov, S. (Edt.): Proceedings of the 4th International Conference on Multi-Material Micro Manufacture, (2008)4, Dunbeath, Scotland, UK: Whittles Publishing, pp. 295-298

Geißdörfer, S.; Rosochowski, A.; Olejnik, L.; Engel, U.:
Micro-extrusion of an ultrafine grained copper can.
In: Menz, W.; Dimov, S. (Edt.): Proceedings of the 4th International Conference on Multi-Material Micro Manufacture, (2008)4, Dunbeath, Scotland, UK: Whittles Publishing, pp. 191-194

Geißdörfer, S.; Rosochowski, A.; Olejnik, L.; Engel, U.; Richert, M.:
Micro-extrusion of ultrafine grained copper.
In: Boisse, P. (Edt.): Proceedings of the 11th International Esaform Conference on Material Forming, (2008)11, Springer Verlag, published on CD

Diehl, A.; Engel, U.; Geiger, M.:
Mechanical Properties and bending behaviour .
In: Proc, IMecE, PartB (Edt.): Journal of Engineering Manufacture, 222(2008)1, Professional Engineering Publishing, pp. 83-91

Kroiß, T.; Engel, U.; Völkl, R.; Geiger, M.:
Process-machine interactions in cold forging – calculation of press / tooling stiffness and its integration into FE process simulation.
In: Yang, D.Y. (Edt.): Proc. of the 9th International Conference on Technology of Plasticity (ICTP), (2008), Gyeongju, pp. 1735-40

Kroiß, T.; Völkl, R.; Engel, U.; Geiger, M.:
Modeling of Process-Tool-Machine Interactions in Cold Forging.
In: Denkena, B. (Edt.): Proc. 1st Int. Conf. on Process Machine Interactions (PMI), (2008), Garbsen: PZH, pp. 175-182

Koch, J.; Völkl, R.; Engel, U.:
Effective Stochastic Simulation for the Optimization of Time, Costs and Quality in Cold Forging.
In: Int. J. Mater. Forming, (2008)1, Paris: Springer, pp. 9-12

Koch, J.; Völkl, R.; Engel, U.:
FE-analysis based optimization of time, costs and quality with the consideration of stochastic process characteristics.
In: AKADEMIA GóRNICZO-HUTNICZA (Edt.): Proceedings of the 12th International Conference Metal Forming, 2(2008), pp. 633-641

Eichenhüller, B.; Engel, U.:
Investigation of Parameter Interactions in Microforming.
In: OZDOGANLAR, B. (Edt.): Proc. of the 3rd Int. Conf. on Micromanufacturing , (2008), Pittsburgh, PA, USA, pp. 207-210

Eichenhüller, B.; Engel, U.; Geißdörfer, S.:
Process parameter interaction in microforming.
In: BOISSE, P. (Edt.): Proceedings of the 11th ESAFORM2008 conference on material forming, (2008), published on CD

Engel, U.; Geißdörfer, S.; Diehl, A.; Eichenhüller, B.; Weidel, S.:
Mikroumformen - Ähnlich wie Makro?.
In: Steinhoff, K.; Kopp, R. (Edt.): Umformtechnik im Spannungsfeld zwischen Plastomechanik und Werkstofftechnik, (2008), Bad Harzburg: GRIPS media GmbH, pp. 189-206

Engel, U.; Geißdörfer, S.; Weidel, S.; Eichenhüller, B.:
Ursache und Wechselwirkung in der Mikroumformtechnik.
In: Mikroproduktion, (2008)2, München: Carl Hanser Verlag, pp. 39-43

Eichenhüller, B.; Engel, U.:
Microforming of titanium - forming behaviour at elevated temperature.
In: Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 222(2008)1, Professional Engineering Publishing, pp. 77-82

Herrero, A.; Esmoris, J.; Azcarate, S.; Geißdörfer, S.; Engel, U.:
Application of EDM to the production of micro tooling.
In: Menz, W.; Dimov, S., Toshev, Y. (Edt.): 4M 2007, Third International Conference on Multi-Material Micro Manufacture, (2007), Dunbeath, Scotland, UK: Whittles Publishing, pp. 115-118

Weidel, S.; Engel, U.:
Impact of liquid lubricant on the flattening behaviour of single asperities.
In: Menz, W.; Dimov, S., Toshev, Y. (Edt.): Proceedings of the 3rd International Conference on Multi-Material Micro Manufacture, (2007), Dunbeath, UK: Whittles Publishing, pp. 161-164

Otto, A.; Weidel, S.; Engel, U.:
Laser in metal forming - benefits for tribology.
In: Bach, F.W.; Bouzakis, K.D.; Denkena, B.; Geiger, M. (Edt.): 6th International Conference THE Coatings in Manufacturing Engineering, (2007), Garbsen, Deutschland: PZH Produktionstechnisches Zentrum GmbH, pp. 13-22

Wagner, K.; Völkl, R.; Engel, U.:
Tool Life Enhancement on Cold Forging by Locally Optimized Surfaces.
In: Journal of Materials Processing Technologies, (2007)201, Elsevier Verlag, pp. 2-8

Arbak, M.; Engel, U.; Geiger, M.:
Ceramic Adapted Tool Design in Cold Forging - Consideration of Thermal Effects on Prestressing System.
In: Akkök, M.; Busak, E.; Firat, M.; Katanoglu, B. (Edt.): 4th International Conference and Exhibition on Design and Production of Machines and Dies/Molds, (2007)4, Ankara, Turkey: Mechanical Design and Production Society, pp. 60

Engel, U.; Weidel, S.:
Evolution of surface topography in microforming .
In: Azushima, A. (Edt.): Proceedings of the 3rd International Conference on Tribology in Manufacturing Processes ICTMP, 143-150(2007), published

Wagner, K.; Völkl, R.; Engel, U.; Geiger, M.; Meyer-Pittroff, F.:
Locally Optimized Tool Surfaces by Laser Treatment in Cold Forging.
In: Geiger, M.; Otto, A.; Schmidt, M. (Edt.): Proceedings of the LANE 2007, (2007)5, Bamberg: Meisenbach Verlag, pp. 859-870

Diehl, A.; Geißdörfer, S.; Engel, U.:
Investigation of Size Dependent Mechanical Properties of Metal Foils in Micro Sheet Metal Forming Processes.
In: Clemson University (Edt.): Proceedings of the 2nd International Conference on Micromanufacturing, 10.-13. September 2007, Greenville, USA, (2007), pp. 156-161

Diehl, A.; Engel, U.; Geiger, M.:
Influence of microstructure on the mechanical properties and the forming behaviour of very thin metal foils.
In: Menz, W.; Dimov, S., Toshev (Edt.): 3rd International conference on Multi-Material Micro Manufacture, 03.-05.10., Borovets, Bulgaria, (2007), Oxford, UK: Elsevier Verlag, pp. 289-292

Diehl, A.; Engel, U.; Geiger, M.:
Mechanical Properties and ending behaviour of metal foils.
In: Proceedings of the Institution of Mechanical Engineers, (2007), Professional Engineering Publishing, published

Diehl, A.; Engel, U.; Geiger, M.:
Mechanical Properties and bending behaviour of metal foils.
In: Proceedings of the Institution of Mechanical Engineers, (2007), accepted

Engel, U.; Arbak, M.; Wagner, K.; Völkl, R.:
New Materials and Surface Finishing Methods for Cold Forging Tools.
In: Kuzman, K. (Edt.): Conference Proceedings, ICIT&MPT 2007, 6th International Conference on Industrial Tools and Material Processing Technologies, (2007)6, Sempeter: Marginalija, pp. 13-20

Engel, U.; Rosochowski, A.; Geißdörfer, S.; Olejnik, L.:
Advances in Material Forming.
(2007), Paris, France: Springer Verlag, published

Weidel, S.; Engel, U.:
Characterisation of the flattening behaviour of idealised asperities.
In: Blunt, L.; Rosen, G.; Thomas, T.R.; Jiang, X.; Whitehouse, D. (Edt.): Proceedings of the 11th International Conference on Metrology and Properties of Engineering Surfaces, (2007)1, Huddersfield, UK: University of Huddersfield, pp. 217-222

Weidel, S.; Engel, U.; Geiger, M.:
Nanotopography characterisation in microforming.
In: Thornett, E. (Edt.): Proceedings of the 7th International Conference of the European Society for Precision Engineering and Nanotechnology Euspen, Bremen, (2007), Bedford, UK: Euspen Verlag, pp. 361-364

Wagner, K.; Völkl, R.; Engel, U.:
Lokal optimierte Oberflächen an Umformwerkzeugen.
In: 3D-Erfahrungsforum Innovation im Werkzeug- und Formenbau, (2007)85, München, Deutschland: Herbert Utz Verlag, pp. 1-19

Geißdörfer, S.; Engel, U.; Geiger, M.:
Mesoscopic Model - Advanced Simulation of Microforming Processes.
In: Cueto, E.; Chinesta, F. (Edt.): Proceedings of the 10th International Conference on Metal Forming ESAFORM 2007, (2007)907, pp. 647-653

Weidel, S.; Engel, U.:
Micro Tribology - Characterisation of the Flattening Behaviour of Idealised Aperities.
In: Proceedings og the 2nd International Conference Micro- and Nanotechnology Viennano. March 14-16, Vienna, Austria, (2007), published

Kroiß, T.; Völkl, R.; Engel, U.:
Berechnung der Wechselwirkungen zwischen Umformmaschine und -prozess auf Basis der Integration eines Pressenmodells in die FE-Fließpresssimulation.
In: DWM (Edt.): Proc.12th Dresdner Werkzeugmaschinen-Fachseminar, (2007), Dresden, published

Eichenhüller, B.; Egerer, E.; Engel, U.:
Microforming at elevated temperature - forming and material behaviour.
In: The International Journal of Advanced Manufacturing Technology, 33(2007)1-2, London: Springer, pp. 119-124

Arbak, M.; Putz, A.; Engel, U.; Geiger, M.:
Keramik als Werkzeugstoff in der Kaltmassivumformung.
In: Technik in Bayern, (2006), pp. 28

Diehl, A.; Summerauer, I.; Heimann, T.; Franke, V.; Engel, U.; Schulze-Niehoff, H.; Vollertsen, F.:
Erst umdenken, dann umformen.
In: Mikroproduktion, (2006)3, München, Deutschland: Carl Hanser Verlag, pp. 46-50

Diehl, A.; Engel, U.; Geiger, M.:
Mechanical Propteries and bending behaviour of metal foils.
In: Menz, W.; Dimov, S.; Fillon, B. (Edt.): 4M 2006, 2nd International Conference on Multi-Material Micro Manufacture, 20.-22.09.2006, Grenoble, France, (2006), Oxford, UK: Elsevier Verlag, pp. 297-300

Weidel, S.; Engel, U.:
Measurement and characterisation of the microtopography in the contact area between workpiece and tool in microforming.
In: 4M 2006, 2nd International Conference on Multi-Material Micro Manufacture, 20.-22.09.2006, Grenoble, France, (2006), pp. 157-160

Weidel, S.; Engel, U.:
Surface characterisation in forming processes by functional 3D parameters.
In: The International Journal of Advanced Manufacturing Technology, (2006), Springer Verlag, accepted

Eichenhüller, B.; Egerer, E.; Engel, U.:
Microforming at elevated temperature - forming and material behaviour.
In: The International Journal of Advanced Manufacturing Technology, (2006)33, London: Springer Verlag, pp. 119-124

Engel, U.; Geißdörfer, S.:
Microforming - on the way to industrial application?.
In: American Society of Mechanical Engineers (Edt.): Proceedings of the 1st International Conference on Micromanufacturing, (2006), pp. 21-30

Geißdörfer, S.; Diehl, A.; Eichenhüller, B.; Engel, U.:
Microforming - Application and 3D Simulation.
In: Teti, R. (Edt.): Proceedings of the 5th CIRP International Seminar on Intelligent computation in Manufacturing Engineering, (2006), Naples, Itlay: University of Naples, pp. 521-526

Engel, U.; Geißdörfer, S.:
Microforming Technology - History and Future.
In: Juster, N.; Rosochowski,A. (Edt.): The 9th International Conference on Metal Forming ESAFORM, (2006)83-89, Polen: Publishing House Akapit, pp. 11-12

Arbak, M.; Putz, A.; Engel, U.; Geiger, M.:
Technische Keramik in der Kaltmassivumformung? Verbesserung der Oberflächenqualität und Maßhaltigkeit.
In: Maschinenbau in Bayern, (2006), accepted

Popp, U.; Engel, U.:
Micro Texturing of Cold Forging Tools - Influence on Tool Life.
In: Journal of Engineering Manufacture, 1(2006)220, pp. 27-33

Eichenhüller, B.; Engel, U.:
Microforming of titanium - forming behaviour at elevated temperature.
In: Menz, W.; Dimov, S.; Fillon, B. (Edt.): 2nd International Conference on Multi-Material Micro Manufacture, (2006), Oxford: Elsevier Verlag, pp. 339-342

Geiger, M.; Putz, A.; Engel, U.:
Ultrasonic Inspection of Cold Forging Tools.
In: Production Engineering - Annals of the WGP, 2(2006)8, pp. 161-164

Wagner, K.; Putz, A.; Engel, U.:
Improvement of Tool Life in cold Forging by Locally Optimized Surfaces.
In: Journal of Materials Processing Technology, (2006)177, Elsevier Verlag, pp. 206-209

Arbak, M.; Putz, A.; Engel, U.; Geiger, M.:
Industrial Ceramics in Cold Forging: Increasing Dimensional Accuracy and Surface Quality.
In: Proceedings of the 4th JSTP International Seminar on Precision Forging, Nara, Japan, (2006), JSTP, pp. 83-86

Geißdörfer, S.; Diehl, A.; Eichenhüller, B.; Engel, U.:
Microforming - Application and 3D Simulation.
In: TETI, R. (Edt.): Proceedings of the 5th CIRP Seminar on Intelligent Computation in Manufacturing Engineering, (2006), Naples, Italien: University of Naples, pp. 521 - 526

Eichenhüller, B.; Engel, U.:
Microforming of titanium - forming behaviour at elevated temperature.
In: MENZ, W.; FILLON, B.; DIMOV, S. (Edt.): 2nd International Conference on Multi-Material Micro Manufacture, (2006), Oxford: Elsevier, pp. 339-342

Geißdörfer, S.; Engel, U.; Geiger, M.:
Simulation of Microforming Processes - An Advanced Approach Apllying a Mesoscopic Model.
In: Proceedings of the 8th International Conference on Technology of Plasticity (ICTP), (2005), accepted

Arbak, M.; Völkl, R.; Engel, U.:
Prozesssimulation in der Kaltmassivumformung. Verbesserung der Werkzeuglebensdauer und der Prozesssimulation.
In: wt Werkstatttechnik online, 12(2005)11, Springer Verlag, pp. 852-857

Putz, A.; Engel, U.:
Ultrasonic inspection of the real prestressing conditions of cold forging tools.
In: Siegert, K.; Liewald, M. (Edt.): New developments in forging technology, (2005), pp. 257-268

Diehl, A.; Engel, U.; Geiger, M.:
Randerscheinungen rücken ins Zentrum.
In: Mikroproduktion, (2005)4, Carl Hanser Verlag, pp. 50-52

Geiger, M.; Engel, U.; Völkl, R.:
FE-Analysis Based Prediction of Tool Life in Cold Forging With the Consideration of Stochastic Process Characteristics.
In: Production Engineering - Annals of the WGP, 1(2005)7, pp. 111-114

Arbak, M.; Völkl, R.; Engel, U.:
Improvement of Tool Life and Working Accuracy in Cold Forging by Numerical Process Simulation.
In: JSTP (Edt.): Proceedings of the 8th International Conference on Technology of Plasticity (ICTP), (2005), accepted

Geißdörfer, S.; Engel, U.; Geiger, M.:
Erweitertes Mesoskoisches Modell zur FE-Berechnung komplexer Mikroumformprozesse.
In: Vollertsen, F. (Edt.): Proceedings of the 2nd Colloquium of DFG Priority Program Process Scaling, (2005), Bremen, Deutschland: BIAS-Verlag, pp. 11-20

Weidel, S.; Popp, U.; Engel, U.:
Surface characterisation in forming processes by functional 3D parameters.
In: 4M 2005, Proceedings of the 1st International Conference on Multi-Material Micro Manufacture, (2005), pp. 249-252

Geißdörfer, S.; Putz, A.; Engel, U.:
Microforming - Current State and Future Demands.
In: Journal of Mechanical Engineering, (2005)52, pp. 492-505

Eichenhüller, B.; Egerer, E.; Engel, U.:
Microforming at elevated temperature - forming and material behaviour.
In: Menz, W.; Dimov, S. (Edt.): 4M 2005, Proceedings of the 1st International Conference on Multi-Material Micro Manufacture, (2005), Oxford: Elsevier Verlag, pp. 151-154

Diehl, A.; Engel, U.; Geiger, M.:
Spring-back behaviour of thing metal foils in free bending processes.
In: 4M 2005, Proceedings of the 1st International Conference on Multi-Material Micro Manufacture, (2005), pp. 147-150

Diehl, A.; Engel, U.; Geiger, M.:
Investigation of the spring-back behaviour in metal foil forming. Proceedings of the 24th IDDRG-conference, Besancon, Frankreich.
(2005), published

Eichenhüller, B.; Egerer, E.; Engel, U.:
Einfluss erhöhter Prozesstemperatur auf die Formänderungsgrenzen beim Mikrofließpressen.
In: Kopp, R. (Edt.): Erweiterung der Formgebungsgrenzen bei Umformprozessen. Abschlussbericht DFG Schwerpunkt, (2005), Aachen, Deutschland: Verlagshaus Mainz, pp. 103-110

Popp, U.; Weidel, S.; Engel, U.:
Charakterisierung von lasererzeugten Mikrostrukturen.
In: Geiger, M.; Polster, S. (Edt.): LEF 2003, Laser in der Elektronikproduktion & Feinwerktechnik - Tagungsband des 8. Erlanger Seminars LEF (2003), (2005), Bamberg: Meisenbach Verlag, accepted

Geiger, M.; Engel, U.; Eckstein, R.; Eichenhüller, B.; Raebiger, K.; Tiesler, N.:
Umformtechnische Herstellung metallischer Kleinstteile.
In: Geiger, M.; Feldmann, K. (Edt.): Sonderforschungsbereich 356 Produktionssysteme in der Elektronik, (2005), Bamberg: Meisenbach Verlag, pp. 23-59

Engel, U.; Geißdörfer, S.:
Simulation in Microforming.
In: Kuzman, K. (Edt.): Proceedings of the 5th International Conference on Industrial Tools, (2005), pp. 17-26

Putz, A.; Engel, U.:
Fertigungsplanung in der Umformtechnik - Montagequalität von Werkzeugen.
In: uni.kurier.magazin, 106(2005)31, pp. 73

Putz, A.; Engel, U.:
Ermittlung des Vorspannungszustandes von Matrizenverbänden mittels Ultraschall.
In: Siegert, K.; Liewald, M. (Edt.): Neuere Entwicklungen in der Massivumformung, (2005), pp. 265-276

Putz, A.; Engel, U.; Geiger, M.:
Quality Assesment of Cold Forging Tools: Measurement of the Real Prestressing by Ultrasonics.
In: ICTP 2005, Proceedings of the 8th International Conference on Technology of Plasticity, Obtober 27th - November 1st, Yokohama, Japan, (2005), published on CD

Eichenhüller, B.; Egerer, E.; Engel, U.:
Microforming at elevated temperature - forming and material behaviour.
In: MENZ, W.; DIMOV, S. (Edt.): 1st International Conference on Multi-Material Micro Manufacture, (2005), Oxford: Elsevier, pp. 151-154

Eichenhüller, B.; Egerer, E.; Engel, U.:
Einfluss erhöhter Prozesstemperatur auf die Formänderungsgrenzen beim Mikrofließpressen.
In: KOPP. R. (Edt.): Erweiterung der Formgebungsgrenzen bei Umformprozessen. Abschlussbericht DFG Schwerpunktprogramm 1074, (2005), Aachen: Verlagshaus Mainz, pp. 103-110

Geiger, M.; Engel, U.; Eckstein, R.; Eichenhüller, B.; Räbiger, K.; Tiesler, N.:
Umformtechnische Herstellung metallischer Kleinstteile.
In: FELDMANN, K.; GEIGER, M. (Edt.): Sonderforschungsbereich 356 Produktionssysteme in der Elektronik, (2005), Bamberg: Meisenbach, pp. 23-59

Engel, U.:
Tribology in Microforming.
In: ICTMP 2004, Proceedings of the 2nd International Conference on Tribology in Manufacturing Processes, Nyborg, Denmark, 2(2004), pp. 549-560

Geißdörfer, S.; Engel, U.:
Mesoscopic Model - Simulation of Size Effects in Microforming.
In: Akademia Górniczo-Hutnicza (Edt.): Proceedings of the 10th International Conference Metal Forming 2004 (19.-23.09.), (2004), Krakow: Akademia Górniczo-Hutnicza, pp. 699-703

Putz, A.; Popp, U.; Engel, U.:
Qualitätssicherung im Werkzeugbau: Messung der Werkzeugvorspannung mittels Ultraschall.
In: Werkstatttechnik online, 12(2004)11, pp. 659-662

Geißdörfer, S.; Engel, U.; Geiger, M.:
FE-Simulation of Microforming Process Applying a Mesoscopic Model.
In: International Journal of Machine Tools & Manufacture, (2004)46, pp. 1222-1226

Popp, U.; Engel, U.:
Micro Texturing of Cold Forging Tools - Influence on Tool Life.
In: ICTMP 2004, Proceedings of the 2nd International Conference on Tribology in Manufacturing Processes, Nyborg, Denmark, (2004), pp. 285-291

Geiger, M.; Popp, U.; Engel, U.:
Tool Life Improvement by Surface Laser Texturing.
In: THE Coatings, Proceedings of the 4th International Conference, (2004), pp. 57-68

Putz, A.; Engel, U.; Geiger, M.:
Ultrasonic Measurement of the Real Contact Area between Die and Ring in Prestressed Cold Forging Tools.
In: ISPF 2004, Proceedings of the 3rd JSTP International Seminar on Precision Forging, (2004), pp. 105-108

Egerer, E.; Engel, U.:
Process Characterization and Material Flow in Microforming at Elevated Temperatures.
In: Journal of Manufacturing Processes, 1(2004)5, pp. 11-16

Popp, U.; Engel, U.; Geiger, M.:
Increased Tool Life in Cold Forging with Micro Textured Tool Surface.
In: ICEM 2003, Proceedings of the International Workshop on Environmentally Conscious Manufacturing, (2003), accepted

Geißdörfer, S.; Engel, U.; Geiger, M.:
Mesosopic Model - Simulative Approach to the Scatter of Process Factors in Microforming.
In: Vollertsen, F. (Edt.): Proceedings of the 1st Colloquium of DFG Priority Program Process Scaling, (2003), Bremen: BIAS-Verlag, pp. 81-88

Geiger, M.; Engel, U.; Völkl, R.:
Optimierte Produktqualität und Werkzeuglebensdauer durch stochastische Simulation.
In: ZWF - Zeitschrift für wirtschaftlichen Fabrikbetrieb, (2003)10, München: Hanser Verlag, pp. 468-471

Engel, U.; Egerer, E.; Geiger, M.:
Production of Microparts by Cold and Warm Forming.
In: CIRP (Edt.): Proceedings of the CIRP Seminar on Micro and Nano Technology , (2003), published

Engel, U.; Völkl, R.; Arbak, M.:
SVL-Concept - Current State of Progress in Predicting Performance and Reliability of Cold Forging Tools.
In: Kuzman, K. (Edt.): Conference Proceedings ICIT 2003 4th International Conference on Industrial Tools, Bled Celje, Slovenia, April 8th-12th, (2003), pp. 43-48

Völkl, R.; Engel, U.:
Improvement of Tool Life in Cold Forging by FE-Simulation with the Consideration of Stochastical Process Characteristics.
In: FEM Analyses, (2003), published

Popp, U.; Neudecker, T.; Engel, U.:
Towars Improved Tool Life in Cold Forging by Micro Texturing of Tool Surfaces.
In: Proceedings of the 4th International Conference on Industrial Tools (ICIT 2003), (2003), published

Egerer, E.; Engel, U.:
Material Behavior in Microforming at Elevated Temperature.
In: ASPE (Edt.): Proceedings of the ASPE Winter Topical Meeting, January 22-23, (2003), pp. 37-42

Tiesler, N.; Engel, U.; Geiger, M.:
Basic research on cold forging of microparts.
In: Kiuchi, M.; Nishimura, H.; Yanagimoto, J. (Edt.): Advanced Technology of Plasticity, Proceedings of the 7th ICTP, 1(2002), Japan Society for Technology of Plasticity, pp. 379-385

Engel, U.; Völkl, R.:
SVL-Concept? Experiences in prediction of tool life and tool reliability in cold forging.
In: Kiuchi, M.; Nishimura, H.; Yanagimoto, J. (Edt.): Advanced Technology of Plasticity, Proceedings of the 7th ICTP, (2002), Society for Technology of Plasticity, pp. 67-72

Popp, U.; Engel, U.; Geiger, M.:
Increasing Tool Life in Cold Forging by Laser Micro Texturing the Tool Surface.
In: Proceedings of the 3rd International Conference THE Coatings in Manufacturing Engineering, (2002), Thessaloniki, Greece: Ziti Editions, pp. 17-26

Popp, U.; Neudecker, T.; Engel, U.; Geiger, M.:
Excimer Laser Texturing of Hard Coated Cold Forging Tools - Investigations on Tool Life.
In: Advanced Technology of Plasticity, Proceedings of the 7th ICTP, 2(2002), pp. 1633-1638

Popp, U.; Engel, U.:
Erhöhung der Lebensdauer von Werkzeugen durch Oberflächenstrukturierung.
In: 17.Jahrestreffen der Kaltmassivumformer, (2002), published

Geiger, M.; Popp, U.; Engel, U.:
Excimer Laser Micro Texturing of Cold Forging Tool Surfaces - Influence on Tool Life.
In: Annals of the CIRP, 51(2002)1, pp. 231-234

Geiger, M.; Popp, U.; Engel, U.:
Improved Tribological Behavior of Cold Forging Tool Surfaces by Excimer Laserr Micro Texturing.
In: Production Engineering - Annals of the WGP, IX(2002)1, pp. 1-4

Engel, U.; Eckstein, R.:
Microforming - from basic research to its realisation.
In: Journal of Materials Processing Technology, 125-126(2002), pp. 35-44

Putz, A.; Engel, U.:
Examination of the Real Prestressing Conditions of Tooling Systems.
In: ITC 2002, Proceedings of the 6th International Tooling Conference, (2002), Karlstad, Schweden, pp. 1047-1056

Engel, U.; Egerer, E.:
Basic research on cold and warm forging of microparts.
In: Key Engineering Materials, 233-236(2002), pp. 449-455

Geiger, M.; Egerer, E.; Engel, U.:
Cross Transport in a Multi-Station Former for Microparts.
In: Production Engineering, 9(2002)1, pp. 101-104

Falk, B.; Putz, A.; Engel, U.:
Ultrasonic Inspection of Tooling Systems in Cold Forging.
In: Kuzman, K. (Edt.): Proceedings of the 3rd International Conference on Industrial Tools (ICIT), (2001), pp. 251-255

Egerer, E.; Engel, U.; van der Heyd, G.:
Handling of Microparts in a Multi-Station Former.
In: Balsamo, A.; et al. (Edt.): 2nd International Conference euspen, May 27th -31st, Turin, (2001), pp. 836-839

Geiger, M.; Engel, U.; Popp, U.:
Beanspruchungsgerechte Oberflächenstrukturierung hartstoffbeschichteter Werkzeuge der Kaltmassivumformung.
In: Rosiwal, S.M. (Edt.): Bayerischer Forschungsverbund für Oberflächentechnik, (2001), pp. 139-155

Geiger, M.; Kleiner, M.; Eckstein, R.; Tiesler, N.; Engel, U.:
Microforming.
In: Keynote Paper. Annals of the CIRP, 2(2001)50, pp. 445-462

Geiger, M.; Engel, U.; Eckstein, R.; Tiesler, N.:
Umformtechnische Herstellung metallischer Kleinstteile.
In: Feldmann, K.; Geiger, M. (Edt.): Sonderforschungsbereich 356 Produktionssysteme in der Elektronik, (2001), Bamberg: Meisenbach Verlag, pp. 19-60

Geiger, M.; Eckstein, R.; Engel, U.:
Study of Micro Sheet Metal Working Processes.
In: Production Engineering, 8(2001), pp. 55-58

Engel, U.; Tiesler, N.; Eckstein, R.:
Microparts - a challenge for forming technology.
In: Kuzman, K. (Edt.): Conference Proceedings ICIT 2001 3rd International Conference on Industrial Tools, Rogaska Slatina, Slovenia, April 22nd-26th, (2001), pp. 31-39

Falk, B.; Völkl, R.; Engel, U.:
Vorhersage der Lebensdauer und Ausfallwahrscheinlichkeit von Werkzeugen der Kaltmassivumformung.
In: Vollertsen, F.; Kleiner, M. (Edt.): Idee-Vision-Innovation, (2001), Bamberg: Meisenbach Verlag, pp. 153-162

Neudecker, T.; Popp, U.; Engel, U.:
Excimer laser treatment of tool surfaces and its influence on friction in metal forming processes.
In: Proceedings of the 1st International Seminar on Progress in Innovative Manufacturing Engineering (PRIME), Sestri Levante, Italien, (2001), pp. 387-392

Popp, U.; Neudecker, T.; Engel, U.; Geiger, M.:
Excimer Laser Texturing of Tool Surfaces and its Influence on Friction in Cold Forging.
In: Proceedings of the 2nd International Conference THE Coatings in Manufacturing Engineering, (2001), pp. 1-8

Neudecker, T.; Popp, U.; Schiffer, R.; Engel, U.:
Meßvorschrift zur Bestimmung funktionaler 3D-Oberflächenkenngrößen für die Blechumformung.
In: UTF Science, (2001)3, pp. 34-38

Neudecker, T.; Popp, U.; Schiffer, R.; Engel, U.:
Meßvorschrift zur Bestimmung funktionaler 3D-Oberflächenkenngrößen für die Blechumformung.
In: UTF Science, (2001)2, pp. 12-17

Neudecker, T.; Popp, U.; Schiffer, R.; Engel, U.:
Meßvorschrift zur Bestimmung funktionaler 3D-Oberflächenkenngrößen für die Blechumformung.
In: Vollertsen, F.; Kleiner, M. (Edt.): Idee-Vision-Innovation, (2001), Bamberg: Meisenbach Verlag, pp. 391-408

Eckstein, R.; Tiesler, N.; Egerer, E.; Engel, U.:
Herstellung metallischer Kleinstteile - Eine Herausforderung für die Umformtechnik.
In: Vollertsen, F.; Kleiner, M. (Edt.): Idee-Vision-Innovation, (2001), Bamberg: Meisenbach Verlag, pp. 135-142

Egerer, E.; Neudecker, T.; Engel, U.:
Grundlagenuntersuchungen zum Halbwarmmikroumformen.
In: KOPP (Edt.): Tagungsband zum DFG-Kolloquium im SPP 1074 am 11.-12.09.2001, (2001), published

Geiger, M.; Neudecker, T.; Engel, U.:
Micro Texturing of Ceramic Tool Surfaces and its Influence on Friction in Sheet Metal Forming Processes.
In: Production Engineering - Annals of the WGP, 2(2000)7, pp. 107-110

Tiesler, N.; Engel, U.:
Microforming - Effects of Miniaturization.
In: Pietrzyk, M.; et al (Edt.): Metall Forming 2000, (2000), Rotterdam: Balkema, pp. 355-360

Neudecker, T.; Popp, U.; Engel, U.; Geiger, M.:
Micro Texturing of Tool Surfaces and its Influence on Friction in Deep Drawing Processes.
In: Proceedings of the 8th International Conference on Sheet Metal, (2000), pp. 177-184

Neudecker, T.; Popp, U.; Engel, U.; Geiger, M.:
Micro Texturing of Tool Surfaces and its Influence on Friction in Forming Processes.
In: X. International Colloquium on Surfaces, (2000), pp. 211-221

Geiger, M.; Engel, U.; Popp, U.:
Beanspruchungsgerechte Oberflächenstrukturierung hartstoffbeschichteter Werkzeuge der Kaltmassivumformung.
In: Rosiwal, S.M. (Edt.): Bayerischer Forschungsverbund für Oberflächentechnik, (2000), pp. 147-158

Engel, U.; Neudecker, T.; Popp, U.:
3D-Oberflächenanalyse - Methoden, Kenngrößen, Anwendungen.
In: Materialwissenschaft und Werkstofftechnik, 31(2000), pp. 747-753

Eckstein, R.; Engel, U.:
Behavior of the grain structure in micro sheet metal working.
In: Pietrzyk, M. et al (Edt.): Metal Forming, (2000), Rotterdam: Balkema, pp. 453-459

Pfestorf, M.; Engel, U.; Geiger, M.:
Three Dimensional Characterization of Surfaces for Sheet Metal Forming.
In: WEAR, 216(1998), pp. 244-250

Pfestorf, M.; Engel, U.; Geiger, M.:
3D-Surface Parameters and their Application on Deterministically Textured Sheet Metals.
In: International Journal Machine Tools and Manufacturing, 38(1998)5-6, pp. 607-614

Neudecker, T.; Hinsel, C.; Engel, U.:
Surface Texturing of Ceramics to Reduce Friction in Forming Processes.
In: Dick, E.; De Baets, P.; Sierens, R. (Edt.): Proceedings of the Simposium on Computational an Experimental Methods in Mechanical and Thermal Engineering, (1998), pp. 79-83

Geiger, M.; Engel, U.; Hinsel, C.:
Effects of PVD and CVD Coatings on Fatigue Strength of Tool Steel for Cold Forging.
In: Production Engineering - Annals of the WGP, 5(1998)1, pp. 43-46

Engel, U.; Messner, A.; Tiesler, N.:
Cold Forging of Microparts - Effects of Miniaturisation on Friction.
In: Chenot, J.L. et al (Edt.): Proceedings of the 1st ESAFORM Conference on Materials Forming, (1998), Sophia Antipolis, France, pp. 77-80

Engel, U.; Messner, A.:
Numerical Simulation of Metal Forming Processes for the Production of Microparts.
In: Wire, 48(1998)2, pp. 94-100

Engel, U.:
Prediction of the life of bulk forming tools.
In: Carsrensen, J.V.; Leffers, T.; Lorentzen, T.; Pedersen, O.B.; Sorensen, B.F.; Winther, G. (Edt.): Proceedings of the 19th Riso Int. Symp. On Material Science - Modelling of Structure and Mechanics of Materials from Microscale to Product, (1998), Roskilde, Denmark: Riso National Laboratory, pp. 71-90

Engel, U.:
How basic research contributes to eco-friendly application of metal forming technologies.
In: Proceedings of the Int. Workshop on Environmentally Conscious Manufacturing - Ecology and Economy in Metal Forming and Cutting (ICEM-97), (1998), 's-Hertogenbosch, Netherlands, pp. 120-129

Engel, U.:
Basic Research in Manufacturing and its Contribution to an Eco-friendly Application of Cold Forging.
In: IMechE Conference Transactions-Forging and Related Technology (International Conference ICFT'98), (1998), London: Profess. Engng. Publ. Ltd., pp. 25-36

Falk, B.; Engel, U.; Geiger, M.:
Forming Based on Different Failure Concepts.
In: Journal of Materials Processing Technology, 80-81(1998), pp. 602-607

Falk, B.; Engel, U.:
Lebensdauervorhersage für Werkzeuge der Kaltmassivumformung auf Basis der numerischen Prozeßsimulation. .
In: Umformtechnik, (1997)31, pp. 37-39

Engel, U.:
Tool Life and Tool Reliability in Bulk Metal Forming. .
In: Kaftanoglu, B. et al (Edt.): Int. Conf. and Exhibition on Design and Production of Dies and Molds (Istanbul, Turkey, June 19-21, 1997). Ankara, Turkey, (1997), pp. 321-327

Engel, U.:
Strength vs. Load - A General Concept to Estimate and to Improve the Reliability of Tools in Bulk Metal Forming. ICIT 97 Conference Proceedings (Int. Conf. on Indusrial Tools, April 21-22,1997 Maribor, Slovenia

Engel, U.:
Reliability of Cold Forging Tools. .
In: Wire, (1997)47, pp. 30-34

Engel, U.:
How Basic Research Contributes to Eco-friendly Application of Manufacturing Technologies..
In: Proc. of the 3rd Int. Workshop on Environmental Conscious Manufacturing - Ecology and Economy in Metal Forming and Cutting (ICEM'97), Den Bosch, Netherlands, Sept. 29 - Oct. 1, (1997), in print

Cser, L.; Racz, P.; Engel, U.:
Tool Life and Tool Quality - A Status Report of the ICFG Subgroup.
In: Kuzman, K.; Bali, J. (Edt.): ICIT'97 Conference Proceedings, Int. Conf. on Indusrial Tools, 1997 Maribor, Slov, April 21-22, 1(1997), Celje, Slovenia: Tecos, pp. 51-64

Neudecker, T.; Pfestorf, M.; Engel, U.:
Einglättung strukturierter Oberflächen.
In: Tribologie und Schmierungstechnik , 6(1997)44 , pp. 261-264

Pfestorf, M.; Engel, U.; Geiger, M.:
3D-Kenngrößen zur Beschreibung von Feinblechoberflächen. .
In: Blech Rohre Profile, 12(1996)43, pp. 689-693

Geiger, M.; Schwind, M.; Engel, U.:
Eddy Current Measurement of Mechanical Properties of Sheet Metal..
In: Production Engineering - Annals of the WGP, 1(1996)3, pp. 135-141

Geiger, M.; Pfestorf, M.; Engel, U.:
3D-Kennwerte zur Beschreibung technischer Oberflächen. .
In: Tagungsbund IX. Int. Oberflächenkolloquium Chemnitz , (1996), pp. 159-170

Geiger, M.; Meßner, A.; Engel, U.:
Production of microparts - size effects in bulk metal Forming, similarity theory..
In: Production Engineering - Annals of the WGP, (1996), published

Geiger, M.; Engel, U.; Niederkorn, S.; Pfestorf, M.:
Meßtechnische Erfassung der Wirkflächenvorgänge in der Umformtechnik..
In: Tribologie und Schmierungstechnik , 3(1996)43, pp. 113-119

Geiger, M.; Engel, U.; Niederkorn, S.; Pfestorf, M.:
Experimental investigation of the contact phenomena in cold forging.
In: Production Engineering - Annals of the WGP (1996), 2(1996)3, pp. 5-10

Engel, U.; Meßner, A.; Geiger, M.:
Advanced Concept for the FE-Simulation of Metal Forming Processes for the Production of Microparts. .
In: ALTAN, T. (Edt.): Advanced Technology of Plasticity 1996, Proc. Of the 5th ICTP, (1996)2, pp. 903-907

Niederkorn, S.; Engel, U.; Geiger, M.:
Ultrasonic Investigation of Friction Mechanism in Metal Forming.
In: Journal of Materials Processing Technology, 45(1994)1-4, Amsterdam: Elsevier, pp. 618-623

Niederkorn, S.; Engel, U.; Geiger, M.:
Ultrasonic Investigation of Friction Mechanism in Metal Forming.
In: Proceedings of the 5th International Conference on Metal Forming, (1994), Birmingham, published

Schwind, M.; Engel, U.; Geiger, M.:
Feinblechprüfung mit magnetinduktiven Prüfverfahren.
In: Deutscher Verband für Materialprüfung (Edt.): DVM-Berichtsband der Tagung Werkstoffprüfung 1994 in Bad Nauheim , (1994), Berlin: DVM Verlag, pp. 111-116

Geiger, M.; Engel, U.; Vollertsen, F.; Kals, R.; Meßner, A.:
Metal Forming of Microparts for Electronics.
In: Production Engineering, Annals of the, 3(1994)1, pp. 15-18

Geiger, M.; Engel, U.; Pfestorf, M.:
Ultrasonic Inspection of Stress State of Prestressed Extrusion Dies.
In: Production Engineering - Annals of the WGP, (1994)1/2, pp. 213-216

Engel, U.; Schwind, M.; Geiger, M.:
Zerstörungsfreie Überwachung von Blechkennwerten.
In: Stahl, 5(1994), pp. 34-37

Engel, U.; Schwind, M.; Geiger, M.:
Zerstörungsfreie Überwachung umformtechnisch relevanter Blechkennwerte.
In: EFB-Tagungsband T13: EFB Kolloqium: Möglichkeiten der Leistungssteigerung in der Blechverarbeitung, (1994), Hannover, EFB, published

Geiger, M.; Engel, U.; Vollertsen, F.:
Medición in situ por ultrasonidos del área real contacto en el procedimiento de conformación del macizo.
In: Alambre, 43(1993)6, pp. 288-294

Stancu-Niederkorn, S.; Engel, U.; Geiger, M.:
A new method for investigating the relation between real contact and friction in bulk metal forming.
In: Wire, 43(1993)6, pp. 381-386

Schwind, M.; Engel, U.; Geiger, M.:
Qualitätssicherung in der Blechberarbeitung - magnetinduktive Überwachung der mechanischen Blechkennwerte.
In: Blech, Rohre, Profile, 40(1993)7/8, pp. 595-598

Hänsel, M.; Engel, U.; Geiger, M.:
FEM Simulation of Mixed-Mode Fatigue Crack Growth in Metal Forming Tools.
In: Rossmanith, H.P. ; Miller, K.J. (Edt.): ESIS , 14 (1993), London, UK, pp. 3-21

Geiger, M.; Hänsel, M.; Sobis, T.; Engel, U.:
Optimierungsstrategien zur Verbesserung der Lebensdauer von Umformwerkzeugen.
In: Abschlußkolloquium des PSU-Projekts. Reihe PSU (Prozeßsimulation in der Umformtechnik), 4(1993), Berlin: Springer Verlag, pp. 104-124

Geiger, M.; Engel, U.; Vollertsen, F.:
Mesure in situ, par les ultrasons, de la surface de contact réelle dans les procédés der formage massif.
In: Le Trefile, 43(1993)4, pp. 204-210

Geiger, M.; Engel, U.; Vollertsen, F.:
In-situ-Ultraschallmessung der wahren Kontaktfläche bei Massivumformverfahren.
In: Umformtechnik, 27(1993)1, pp. 19-25

Sobis, T.; Engel, U.; Geiger, M.:
Transfer of Contact Conditions for Failure Analysis of Metal Forming Tools.
In: Chenot, Wood, Zienkiewicz (Edt.): Numerical Methods in Industrial Forming Processes - NUMIFORM 92, Rotterdam : Balkema, (1992), pp. 663- 668

Sobis, T.; Engel, U.; Geiger, M.:
Numerische Simulation der Verschleißvorgänge in der Umformtechnik.
In: DGM- Informationsgesellschaft (Edt.): Berichtsband der DGM zum Symposium -Reibung und Verschleiß- Bad Neuheim, 29.-30.Okt.1992 (1993), Oberursel : DGM-Informationsgesellschaft, (1992), pp. 323- 330

Sobis, T.; Engel, U.; Geiger, M.:
An Experimental Analysis of the Onset of Buckling in Sheet Metal Forming.
In: Int. J. of Materials and Product Technology, Nr. 7/3, (1992), pp. 273- 281

Sobis, T.; Engel, U.; Geiger, M.:
A Theoretical Study on Wear Simulation in Metal Forming Processes.
In: Journal of Materials Processing Technology,(Proc. of the 4th Int. Conf. Metal Forming, Krakau, Polen), Nr. 34, (1992), pp. 233- 240

Hänsel, M.; Meßner, A.; Engel, U.; Geiger, M.:
Local Energy Approach - an Advanced Model for FEM-Simulation of Multiaxial Fatigue.
In: ALIABADI, M.H.; NISITANI, H.; CARTWRIGHT, D.J. (Edt.): Localized Damage II, Vol.2: Computational Methods in Fracture Mechanics , (1992), New York: Elsevier Applied Sience, pp. 263- 282

Geiger, M.; vom Ende, A.; Engel, U.:
Untersuchungen zum Blechbiegen mit elastischem Werkzeug.
In: Blech Rohre Profile, Nr. 39/3, (1992), pp. 191- 198

Wißmeier, H.; Engel, U.; Geiger, M.:
Experimentelle Untersuchung des Bruchverhaltens von Hartmetallen für Fließpreßmatrizen.
In: Draht, 41(1990)5, pp. 563-566

Wißmeier, H.; Engel, U.; Geiger, M.:
Bruchkiterien für die Auslegung von Hartmetall-Fließpreßmatrizen.
In: Draht, 41(1990)4, pp. 505-509

Geiger, M.; Engel, U.; Sobis, T.; Hänsel, M.:
Werkzeugversagen durch Bruch und Verschleiß.
In: Forschungsgesellschaft Umformtechnik (Edt.): Berichtsband des Berichtskolloquiums Gemeinschaftsprojekt Prozeßsimulation in der Umformtechnik, (1990), Stuttgart, pp. 6.1-6.48

Geiger, M.; Engel, U.; vom Ende, A.:
Verbesserung der Arbeitsgenauigkeit bei der Herstellung von Blechteilen mit U-förmigen Querschnitt mit elastischer Matrize.
In: Lange, K.; Dohmen H.G. (Edt.): Präzisionsumformtechnik, (1990), Berlin: Springer Verlag, pp. 171-191

Wißmeier, H.; Engel, U.; Geiger, M.:
Bruchkriterien für die Auslegung von Hartmetall-Fließpressen.
In: Neuere Entwicklungen in der Massivumformung, (1989), Stuttgart: Forschungsgesellschaft Umformtechnik, pp. 19/1-19/42

vom Ende, A.; Engel, U.; Geiger, M.:
Verbesserung der Arbeitsgenauigkeit bei der Herstellung von Blechteilen mit U-förmigen Querschnitt durch Biegen mit elastischer Matrize.
In: Blech Rohre Profile, 36(1989)8, pp. 612-615

Vollertsen, F.; Engel, U.; Leithner, K.; ; Geiger, M.; Geiger, R.:
Pulvermetallurgische Herstellung und Eigenschaften verschleißfester Bauteile.
In: Metall, 43(1989), pp. 944-951

Geiger, M.; Engel, U.; vom Ende, A.:
Verbesserung der Arbeitsgenauigkeit bei der Herstellung von Blechteilen mit U-förmigen Querschnitt mit elastischer Matrize.
In: Lange, K.; Dohmen H.G. (Edt.): Präzisionsumformtechnik, (1989), Berlin: Springer Verlag, pp. 171-191

Engel, U.:
Berechnung des Kriechverhaltens zylindrischer Hohlkörper mit radialem Temperaturgradienten.
In: Z. Werkstofftech., 10(1979), pp. 243-248

Engel, U.; Hübner, H.:
Strength Improvement of Cemented Carbides by Hot Isostatic Pressing (HIP).
In: J. Mater. Sci., 13(1978), pp. 2003-2012

Hübner, H.; Engel, U.:
Ein einfaches Verfahren zur Bestimmung gültiger Bruchzähigkeitswerte von Hartmetallen.
In: Z. Werkstofftech., 9(1978), pp. 128-132

Engel, U.; Hübner, H.:
Die Erzeugung atomar scharfer Anrisse und die Bestimmung der Bruchzähigkeit von Hartmetallen.
In: Tagungsband der 8. Sitzung des Arbeitskreises Bruchvorgänge der DVM, Köln , (1976), pp. 194-200