Lehrstuhl für Fertigungstechnologie, Universität Erlangen-Nürnberg



Dr.-Ing. Dipl.-Wirtsch.-Ing. Univ. Michael Lechner



Egerlandstraße 11, 91058 Erlangen
Tel.: 09131/85-28310
Mail address: This e-mail address is being protected from spambots. You need JavaScript enabled to view it

Advisory Member of the SFB/Transregio 73
Head of working group "Tailored properties" (Transregional research center TR73)
Head of working group “Characterisation of additive manufactured components” (ForNextGen)
Member of the Graduate School of Advanced Optical Technologies
CEO and Co-Founder of HOLOneering
Research Affiliate of the The International Academy for Production Engineering (CIRP)

 



Publications

    2018

    • Michalski, M.; Lechner, M.; Gruber, M.; Merklein, M.:
      Influence of ultrasonic vibration on the shear formability of metallic materials.
      CIRP Annals - Manufacturing Technology 67(2018)1, accepted

    2017

    • Vogel, M.; Lechner, M.; Hildenbrand, P.; Schulte, R.; Merklein, M.:
      Manufacturing of tailored blanks by flexible rolling and its application in a sheet-bulk metal forming process.
      In: Wieland, H. (Edtr.): Proceedings SCT2017, Verlag Stahleisen GmbH, 2017, published on CD

    • Schulte, R.; Lechner, M.; Vogel, M.; Hildenbrand, P.; Merklein, M.:
      Umformtechnische Herstellung von Funktionsbauteilen aus Tailored Blanks durch Blechmassivumformverfahren.
      In: (Edtr.): 22. Umformtechnisches Kolloquium Hannover – Innovationspotentiale in der Umformtechnik. 15./16.03.2017, 2017, published

    • Schulte, R.; Hildenbrand, P.; Lechner, M.; Merklein, M.:
      Designing, manufacturing and processing of Tailored Blanks in a sheet-bulk metal forming process.
      In: (Edtr.): 45th SME North American Manufacturing Research Conference, NAMRC 45, LA, USA, 2017, accepted

    • Schulte, R.; Hildenbrand, P.; Vogel, M.; Lechner, M.; Merklein, M.:
      Analysis of fundamental dependencies between manufacturing and processing Tailored Blanks in sheet-bulk metal forming processes.
      In: (Edtr.): International Conference on the Technology of Plasticity, ICTP 2017, 17-22 September 2017, Cambridge, United Kingdom, 2017, accepted

    • Schulte, R.; Frey, P.; Hildenbrand, P.; Vogel, M.; Betz, C.; Lechner, M.; Merklein, M.:
      Data-Based Control of A Multi-Step Forming Process.
      In: (Edtr.): Proc. International Deep Drawing Research Group Conf. IDDRG 2017, 2017, published online

    • Lechner, M.; Schulte, R.; Meckler, S.; Merklein, M.:
      Augmented Reality Technology for the Purpose of Sheet Metal Forming Simulation Evaluation.
      In: van den Boogaard, T. (Edtr.): 10th Forming Technology Forum 2017 - Model Based Control for Smart Forming Processes, Enschede, 2017, pp. 71-74

    • Kirchen, I.; Vogel-Heuser, B.; Hildenbrand, P.; Schulte, R.; Lechner, M.; Vogel, M.; Merklein, M.:
      Data-driven Model Development for Quality Prediction in Forming Technology .
      In: (Edtr.): 15th IEEE International Conference on Industrial Informatics (INDIN) , 2017, pp. 775-780

    2016

    • Merklein, M.; Wieland, M.; Lechner, M.; Bruschi, S.; Ghiotti, A.:
      Hot Stamping of Boron Steel Sheets with Tailored Properties: a Review.
      Journal of Materials Processing Technology 228(2016), pp. 11-24

    • Hildenbrand, P.; Lechner, M.; Merklein, M.:
      A new strategy for manufacturing tailored blanks by a flexible rolling process.
      Materials Science Forum 854(2016), pp. 99-105

    • Merklein, M.; Lechner, M.; Gröbel, D.; Löffler, M.; Schneider, T.; Schulte, R.; Hildenbrand, P.:
      Innovative approaches for controlling the material flow in sheet-bulk metal forming processes.
      Manufacturing Review 3(2016)2, pp. 1-17

    • Gröbel, D.; Schulte, R.; Hildenbrand, P.; Lechner, M.; Engel, U.; Sieczkarek, P.; Wernicke, S.; Gies, S.; Tekkaya, A.E.; Behrens, B.A.; Hübner, S.; Vucetic, M.; Koch, S.; Merklein, M.:
      Manufacturing of functional elements by sheet-bulk metal forming processes.
      Production Engineering: Research and Development 10(2016)1, pp. 63-80

    • Merklein, M.; Lechner, M.; Graser, M.:
      Improvement of the Formability of Aluminum Extrusion Profiles by a Tailored, Local Short-Term Heat Treatment.
      In: Dimitrov Dimiter, Oosthuizen Tiaan (Edtr.): Proceedings COMA16, 2016, pp. 155-160

    • Merklein, M.; Graser, M.; Degner, J.; Lechner, M.; Herrmann, J.:
      Tailoring material properties in forming technology by a local heat treatment.
      In: Gronostajski, Z. (Edtr.): Advanced Metal Forming Processes in Automotive Industry, 2016, pp. 45-52

    • Graser, M.; Fröck, H.; Lechner, M.; Reich, M.; Keßler, O.; Merklein, M.:
      Influence of short-term heat treatment on the microstructure and mechanical properties of EN AW‑6060 T4 extrusion profiles – Part B.
      Production Engineering 10(2016)4-5, pp. 391–398

    • Fröck, H.; Graser, M.; Reich, M.; Lechner, M.; Merklein, M.; Keßler, O.:
      Influence of short-term heat treatment on the microstructure and mechanical properties of EN AW 6060 T4 extrusion profiles - Part A.
      Production Engineering 10(2016)4-5, pp. 383–389

    • Schulte, R.; Schneider, T.; Lechner, M.; Merklein, M.:
      Interaction of various functional elements in thin-walled cups formed by a sheet-bulk metal forming process.
      In: K. Saanouni (Edtr.): NUMIFORM 2016: The 12th International Conference on Numerical Methods in Industrial Forming Processes , MATEC Web Conf. , 2016, pp. 07003

    • Merklein, M.; Lechner, M.; Böhm, W.; Degner, J.:
      Scale-up of Innovative Forming Solutions from Scientific Fundamentals to Industrial Applications.
      In: Materials Science and Technology 2016 (Edtr.): 2016, published on CD

    2015

    • Hagenah, H.; Merklein, M.; Lechner, M.; Schaub, A.; Lutz, S.:
      Determination of the mechanical properties of hot stamped parts from numerical simulations.
      Procedia CIRP 33(2015), pp. 167-172

    • Merklein, M.; Graser, M.; Lechner, M.:
      Experimental investigation of heat-treated aluminum profiles.
      Key Engineering Materials 651-653(2015), pp. 59-64

    • Merklein, M.; Lechner, M.; Graser, M.:
      Influence of a short-term heat treatment on the formability and ageing characteristics of aluminum profiles.
      In: WLT e.V. (Edtr.): Lasers in Manufacturing Conference, 2015, published

    • Böhm, W.; Merklein, M.; Lechner, M.:
      Innovative aluminium lightweight design by the combination of Accumulative Roll Bonding and local intermediate heat treatment.
      Materials Today: Proceedings 2(2015)10, pp. 4992–4997

    • Kahrimanidis, A.; Lechner, M.; Wortberg, D.; Merklein, M.:
      Effiziente maßgeschneiderte Wärmebehandlung von Blechhalbzeugen in der Serienfertigung.
      wt online 4(2015), pp. 246-250

    • Merklein, M.; Tsoupis, I.; Gnibl, T.; Lechner, M.:
      Innovative manufacturing solutions for the efficient production of car bodies.
      In: Schmeing, K. (Edtr.): Forming in Car Body Engineering 2015, Vincentz Network GmbH & Co. KG, Hannover, 2015, pp. 67-86

    • Degner, J.; Suttner, S.; Tsoupis, I.; Lechner, M.; Merklein, M.:
      Manufacturing of Innovative Aluminum Components by Combining Shear Cutting Operation and Tailor Heat Treated Blank Technique.
      In: Landgrebe, D.; Drossel, W.-G.; Putz, M. (Edtrs.): 5th International Conference on Accuracy in Forming Technology, Verlag Wissenschaftliche Scripten, 2015, pp. 193-208

    • Kahrimanidis, A.; Lechner, M.; Degner, J.; Wortberg, D.; Merklein, M.:
      Process Design of Aluminum Tailor Heat Treated Blanks.
      Materials 8(2015)12, pp. 8524-8538

    • Merklein, M.; Junker, D.; Schaub, A.; Kretschmer, A.; Lechner, M.:
      Development of a New Method for Producing Plane Expanded Metal by Laser Cutting and Forming of Metal Plates under Uniaxial Tension.
      Key Engineering Materials 639(2015), pp. 131-136

    • Merklein, M.; Junker, D.; Schaub, A.; Kretschmer, A.; Lechner, M.:
      Development of a New Method for Producing Plane Expanded Metal by Laser Cutting and Forming of Metal Plates under Uniaxial Tension.
      Key Engineering Materials 639(2015), pp. 131-136

    2014

    • Merklein, M.; Hofmann, M.; Lechner, M.; Kuppert, A.:
      A Review on Tailored Blanks - Production, Applications and Evaluation.
      J. Mater. Process. Tech. 214(2014)2, pp. 151-164

    • Ahuja, B.; Schaub, A.; Karg, M.; Lechner, M.; Merklein, M.; Schmidt, M.:
      Developing LBM process parameters for Ti-6Al-4V thin wall structures and determining the corresponding mechanical characteristics.
      Physics Procedia 56 (2014), pp. 90-98

    • Lechner, M.; Zimmermann, A.; Graser, M.; Merklein, M.:
      Efficient Aluminum - Qualifizierung des Einsatzes höchstfester Aluminiumlegierungen im Karosseriebau.
      In: Franke, J.; Kreitlein, S.; Hoeft, A. (Edtrs.): Tagungsband zum 1. Green Factory Bavaria Kolloquium 2014 - Engergieeffiziente Produktion, FAPS, 2014, pp. 200-205

    • Lechner, M.; Hofmann, M.; Kuppert, A.; Merklein, M.:
      Influence of Pre-straining and Heat Treatment on the Yield Surface of Precipitation Hardenable Aluminum Alloys.
      Physics Procedia 56(2014), pp. 1400-1409

    • Merklein, M.; Affronti, E.; Kuppert, A.; Maier, A.; Lechner, M.:
      The correlation coefficient method: from the beginning to the development.
      In: Institut für Virtuelle Produktion, ETH Zürich (Edtrs.): Workshop Time-dependent Methods for the Evaluation of FLC, 2014, pp. 115-122

    2013

    • Merklein, M.; Lechner, M.:
      Manufacturing flexibilisation of metal forming components by tailored blanks.
      In: D. Dimitrov; C. Schutte (Edtrs.): Proc. Conf. Competitive Manufacturing, 2013, pp. 165-170

    • Lechner, M.; Kuppert, A.; Merklein, M.:
      Comprehensive material characterization for an intermediate heat treatment.
      Key Eng. Mater. 549(2013), pp. 39-44

    • Lechner, M.; Kuppert, A.; Hagenah, H.; Merklein, M.:
      Optimization of the heat treatment layout and blank outline of THTB.
      Key Eng. Mater. 554-557(2013), pp. 2465-2471

    • Merklein, M.; Hofmann, M.; Biasutti, M.; Lechner, M.:
      Numerical optimisation of a shear specimen geometry according to ASTM.
      Key Eng. Mater. 549(2013), pp. 317-324

    • Merklein, M.; Hagenah, H.; Lechner, M.; Kuppert, A.:
      Simulationsgestützte Auslegung maßgeschneiderter wärmebehandelter Aluminiumhalbzeuge.
      In: Tekkaya A. E.; Liewald M. (Edtrs.): 16. Workshop Simulation in der Umformtechnik, Institut für Umformtechnik und Leichtbau, Technische Universität Dortmund, 2013, pp. 90-101

    • Merklein, M.; Lechner, M.; Kuppert, A.:
      Tailor Quenched Blanks.
      Danish-German Aerospace Collaboration Kick-off (2013), accepted

    • Lechner, M.; Böhm, W.; Nguyen, H.; Merklein, M.:
      Herstellung maßgeschneiderter Aluminiumwerkstoffe.
      Zeitschrift Konstruktion 11/12(2013), pp. 11-13

    • Schaub, A.; Lechner, M.; Merklein, M.:
      Druckversuch bei erhöhten Temperaturen.
      In: H.J. Christ (Edtr.): Tagungsband Werkstoffprüfung DGM, Stahleisen, 2013, pp. 85-90

    2012

    • Merklein, M.; Lechner, M.; Schneider, T.; Plettke, R.:
      Tailored Heat Treated Profiles - Enhancement of the Forming Limit of Aluminum Profiles under Bending Load.
      Key Eng. Mater. 504-506(2012), pp. 375-380

    • Merklein, M.; Lechner, M.:
      Flexibilisierung der Fertigung umformtechnisch erzeugter Bauteile durch prozessangepasste Halbzeuge.
      In: P. Groche (Edtr.): 11. Umformtechnisches Kolloquium Darmstadt, Meisenbach, 2012, pp. 87-99

    • Merklein, M.; Lechner, M.:
      Tailored solutions in mechanical engineering.
      Public Service Review (2012), pp. 35-37

    • Merklein, M.; Böhm, W.; Lechner, M.:
      Tailoring material properties of aluminum by local laser heat treatment.
      Physics Procedia 39(2012), pp. 232–239

    • Merklein, M.; Lechner, M.; Kuppert, A.:
      Enhancement of formability of aluminum alloys in multi-stage forming operations by a local intermediate heat treatment.
      Prod. Eng. Res. Dev. 6(2012)6, pp. 541-549

    • Merklein, M.; Lechner, M.; Kuppert, A.:
      Trends in der Aluminiumumformung.
      Tagungsband zum Cluster-Forum Innovationen in der Aluminium-Umformtechnik (2012), accepted

    • Buhr, W.; Winderlich, M.; Kaupper, M.; Lechner, M.; Wieland, M.; Merklein, M.; Krammer, P.; Renger, L:
      Verfahren zur Herstellung eines pressgehärteten Formbauteils aus Stahlblech
      Europäisches Patent EP 12401128.9 - 1215, Anmeldetag 29.06.2012, 2012

    2011

    • Merklein, M.; Lechner, M.; Kuppert, A.:
      Verfahren und Werkzeug zur Wärmebehandlung von Aluminiumblechwerkstoff sowie nach einem derartigen Verfahren wärmebehandelter Aluminiumblechwerkstoff
      Deutsches Patent EP 12 178 269.2, Priorität 05.08.2011, Anmeldetag 27.07.2012, 2011