Zentrum für virtuelle Produktentwicklung (ZVP)

Laufende Projekte

Abgeschlossene Projekte

Papers

2021:

J. Tomas, A. Öchsner, M. Merkel, Experimental Study on Thermal Properties of Hollow Sphere Structures. Defect and Diffusion Forum, 407(4), 185-191, 2021

2020:

D. Schuhmann, M. Merkel, D.K. Harrison, Made to measure. The magazine for industrial vehicle technology, design & engineering, Ausgabe November 2020, 36-40, 2020

J. Tomas, L. Hitzler, M. Köller, J. von Kobylinski, M. Sedlmajer, E. Werner, M. Merkel, The Dimensional Accuracy of Thin-Walled Parts Manufactured by Laser-Powder Bed Fusion Process. J. Manuf. Mater. Process. 2020, 4(3), 91-103, 2020

https://doi.org/10.3390/jmmp4030091 

S. Hafenstein, L. Hitzler, E. Sert, A. Öchsner, M. Merkel, E. Werner, Critical Quenching Rates After Solution Annealing: Peculiarities of Aluminum–Silicon Alloys Fabricated by Laser Powder-Bed Fusion. TMS 2020 149th Annual Meeting & Exhibition Supplemental Proceedings. Springer International Publishing, 2020

doi:10.1007/978-3-030-36296-6_32 

L. Hitzler, E. Sert, E. Schuch, A. Öchsner, M. Merkel, B. Heine, E. Werner, Fracture toughness of L-PBF fabricated aluminium–silicon: a quantitative study on the role of crack growth direction with respect to layering. Progress in Additive Manufacturing, 2020

doi:10.1007/s40964-020-00113-x 

L. Hitzler, S. Hafenstein, F. Mendez Martin, H. Clemens, E. Sert, A. Öchsner, M. Merkel, E. Werner, Heat Treatments and Critical Quenching Rates in Additively Manufactured Al–Si–Mg Alloys. Materials 13 (3), 720-737, 2020

doi:10.3390/ma13030720 

M. Steinhauser, E. Sert, L. Hitzler, A. Öchsner, M. Merkel, Fatigue Behavior of the Additively Manufactured Tool Steel H13 after Surface Treatment using Different Post-Processing Methods. Practical Metallography, 57 (3), 140-167, 2020
doi:10.3139/147.110599 

H. Baumgartl, J. Tomas, R, Büttner, M. Merkel, A deep learning-based model for defect detection in laser-powder bed fusion using in-situ thermographic monitoring. Progress in Additive Manufacturing, 5, 277-285, 2020.

https://doi.org/10.1007/s40964-019-00108-3 

E. Sert, L. Hitzler, S. Hafenstein, M. Merkel, E. Werner, A. Öchsner, Tensile and compressive behaviour of additively manufactured AlSi10Mg samples. Progress in Additive Manufacturing 5, 305-313, 2020.

doi:10.1007/s40964-020-00131-9 

E. Sert, L. Hitzler, M. Merkel, E. Werner, A. Öchsner, Additive manufacturing of AlSi10Mg samples using the selective laser melting technique: correlation between tensile and torsion behavior. Materialwissenschaft und Werkstofftechnik 51 (7), 856-861, 2020.

doi:10.1002/mawe.202000083 

2019:

E. Sert, L. Hitzler, B. Heine, M. Merkel, E. Werner, A. Öchsner, Influence of the Heat Treatment on the Microstructure and Hardness of Additively Manufactured AlSi10Mg Samples. Pract. Metallogr., Vol. 56, No. 2, 91-105, 2019

https://doi.org/10.3139/147.110560 

E. Sert, E. Schuch, A. Öchsner, L. Hitzler, E. Werner, M. Merkel, Tensile strength performance with determination of the Poisson‘s ratio of additively manufactured AlSi10Mg samples. Materialwiss. Werkstofftech., 50, 539-545, 2019

https://doi.org/10.1002/mawe.201800233 

S. Heilgeist, B. Heine, M. Merkel, L. Hitzler, Z. Javanbakht, A. Öchsner, The influence of post-heat treatments on the tensile strength and surface hardness of selectively laser-melted AlSi10Mg. Materialwiss. Werkstofftech., 50, 546-552, 2019

https://doi.org/10.1002/mawe.201800236 

L. Hitzler, J. Hirsch, J. Tomas, M. Merkel, W. Hall, A. Öchsner, In-plane Anisotropy of Selective Laser Melted Stainless Steel: The Importance of the Rotation Angle Increment and the Limitation Window. Proc. Inst. Mech. Eng., Part L, 233(7), 1419-1428, 2019

https://doi.org/10.1177/1464420718757068 

L. Hitzler, E. Sert, M. Merkel, A. Öchsner, E. Werner, Fracture Toughness and Fatigue Strength of Selective Laser Melted Aluminium–Silicon: An Overview. The Minerals, Metals & Materials Society (ed.), TMS 2019 148th, 407-412, 2019

https://doi.org/10.1007/978-3-030-05861-6_37 

2018:

J.P. Körperich, M. Merkel, Thermographic analysis of the building height impact on the properties of tool steel in selective laser beam melting. Materials Science & Engineering Technology, 49 (5), 689-695, 2018

https://doi.org/10.1002/mawe.201800010 

L. Hitzler, M. Merkel, W. Hall, A. Öchsner, A Review of Metal Fabricated with Powder-Bed Based Additive Manufacturing Techniques: Process, Nomenclature, Materials, Achievable Properties, and its Utilization in the Medical Sector. Advanced Engineering Materials, 20 (5), 1-28, 2018.

https://doi.org/10.1002/adem.201700658 

L. Hitzler, N. Schoch, B. Heine, M. Merkel, W. Wall, A. Öchsner, Compressive behaviour of additively manufactured AlSi10Mg, Materials Science & Engineering Technology, 49, 683 - 688, 2018.

https://doi.org/10.1002/mawe.201700239 

E. Sert, L. Hitzler, M. Merkel, A. Öchsner, Development of additively manufactured, topology-optimized interface elements uniting an electrical drivetrain with a conventional chassis. Materials Science & Engineering Technology, 49, 674 - 682, 2018.

https://doi.org/10.1002/mawe.201700274 

L. Hitzler, J. Hirsch, J. Tomas, M. Merkel, W. Hall, A. Öchsner, In-plane Anisotropy of Selective Laser Melted Stainless Steel: The Importance of the Rotation Angle Increment and the Limitation Window. Journal of Materials: Design and Applications, 2018.

https://doi.org/10.1177/1464420718757068 

L. Hitzler, F. Alifui-Segbaya, P. Williams, B. Heine, M. Heitzmann, W. Hall, M Merkel., A. Öchsner, Additive Manufacturing of Cobalt-Based Dental Alloys: Analysis of Microstructure and Physicomechanical Properties, Advances in Materials Science and Engineering, vol. 2018,

https://doi.org/10.1155/2018/8213023 

2017:

L. Hitzler, P. Williams, M. Merkel, H. Wayne, A. Öchsner, Correlation between the Energy Input and the Microstructure of Additively Manufactured Cobalt-Chromium, Defect and Diffusion Forum, 379, 157 - 165, 2017.

https://doi.org/10.4028/www.scientific.net/DDF.379.157 

L. Hitzler, J. Hirsch, M. Merkel, A. Öchsner, Thermal environment and inclination angle dependencies on the surface quality of selective laser melted 316L steel, Defect and Diffusion Forum, 372, 202 - 207, 2017.

https://doi.org/10.4028/www.scientific.net/DDF.372.202 

L. Hitzler, J. Hirsch, M. Merkel, W. Hall, A. Öchsner, Position dependent surface quality in Selective Laser Melting. Materials Science & Engineering Technology, 48, 327 - 334, 2017.

https://doi.org/10.1002/mawe.201600742 

L. Hitzler, J. Hirsch, B. Heine, M. Merkel, W. Hall, A. Öchsner, On the Anisotropic Mechanical Properties of Selective Laster-Melted Stainless Steel, Materials, 10, 1136, 2017.

https://doi.org/10.3390/ma10101136 

L. Hitzler, J. Hirsch, J. Schanz, B. Heine, M. Merkel, W. Hall, A. Öchsner, Fracture toughness of selective laser melted AlSi10Mg, Journal of Materials: Design and Applications, 230, 789 – 798, 2017.

https://doi.org/10.1177/1464420716687337 

L. Hitzler, C. Janousch, J. Schanz, M. Merkel, B. Heine, F. Mack, W. Hall, A. Öchsner, Direction and location dependency of selective laser melted AlSi10Mg specimens, Journal of Materials Processing Technology, 243, 48 - 61, 2017. https://doi.org/10.1016/j.jmatprotec.2016.11.029 

J. Schanz, M. Hofele, S. Ruck, T. Schubert, L. Hitzler, G. Schneider, M. Merkel, H. Riegel, Metallurgical investigations of laser remelted additively manufactured AlSi10Mg parts, Materials Science & Engineering Technology, 48, 463 - 476, 2017.

https://doi.org/10.1002/mawe.201700039 

L. Hitzler, J. Hirsch, M. Merkel, W. Hall, A. Öchsner, Position dependent surface quality in selective laser melting, Materials Science & Engineering Technology, 48, 327 - 334, 2017.

https://doi.org/10.1002/mawe.201600742 

2016:

J. Schanz, M. Hofele, l. Hitzler, M. Merkel, H. Riegel, Laser polishing of additive manufactured AlSi10Mg parts with an oscillating laser beam, Machining, Joining and Modifications of Advanced Materials, Advanced Structured Materials, 61,159 - 169, 2016.

https://doi.org/10.1007/978-981-10-1082-8_16 

A. Liebisch, M. Merkel, On the numerical simulation of the thermal behavior during the selective laser melting process, Materials Science & Engineering Technology, 47, 521 - 529, 2016. https://doi.org/10.1002/mawe.201600528 

C. Janousch, R. Winkler, M. Merkel, H. Altenbach, A. Öchsner, On the isotropic and anisotropic thermal conductivity of metallic hollow sphere structures, Journal of Materials: Design and Applications, 230, 789 - 798, 2016. https://doi.org/10.1177/1464420715602726 

L. Hitzler, C. Janousch, J. Schanz, M. Merkel, F. Mack, A. Öchsner, Non-destructive evaluation of AlSi10Mg prismatic samples generated by selective laser melting: Influence of manufacturing conditions, Materials Science & Engineering Technology, 47, 564 - 581, 2016.

https://doi.org/10.1002/mawe.201600532 

2015:

L. Hitzler, M. Merkel, P. Freytag, Design of a subframe to integrate an electric drivetrain in existing vehicles, Materials Science & Engineering Technology, 46, 454 - 461, 2015.

https://doi.org/10.1002/mawe.201500421 

Conferences:

D. Schuhmann, S. Reusch, M. Merkel, D.K. Harrison, Modular and scalable electric drive platform for non-road mobile machinery, Tagungsband 12th Expert Forum Electric Vehicle Drives 15 – 17 September, 2020 - online

C. Ocker, T.F. Geyer, F. Czwielong, F. Krömer, S. Becker, M. Merkel, W. Pannert, Experimental Investigation of the Impact of 3D-Metal-Printed Perforated Leading Edges on Airfoil and Axial Fan Noise. Proceedings of 26th AIAA/CEAS Aeronautics Conference, 2020, 14-19 June.

https://doi.org/10.2514/6.2020-2529 

J. Tomas, M. Merkel, H. Altenbach, On the optical thermography in selective laser melting process. (Keynote), IUTAM Symposium on Mechanical Design and Analysis for AM Technologies.Moscow, Russia, August 20 – 25, 2018

M. Merkel, T. Schubert, T. Bernthaler, J. Tomas, G. Schneider, D. Sellmer, Laser sintering of tungsten carbide cutter shafts with integrated cooling channels, Proceedings of the 3rd International Conferences on Progress in Additive Manufacturing, 297 - 302, 2018.

https://doi.org/10.25341/D48G6C 

A. Gütlein, Dipl.-Ing.; F. Weber, Dipl.-Wirtschafts-Chemiker; T. Schubert, M.Sc.; Dr. T. Bernthaler, Dipl.-Ing.; M. Sedlmajer, M.Eng.; Prof. Dr.-Ing. M. Merkel, Herstellung von hybriden Gleitringen mittels additivem Verfahren, Conference report: 20th International Sealing Conference ISC, Volume 2018,

https://doi.org/10.1016/S1350-4789(18)30433-1 

A. Gütlein, F. Weber, A. Thiele, M. Merkel, M. Sedlmajer, D. Vogt, Cartridge seals with parts produced with laser beam melting, Conference report: 19th International Sealing Conference ICT, 2016. https://doi.org/10.1016/S1350-4789(16)30397-X

U. Berger, M. Merkel, A. Liebisch, The influence of preheating on laser beam melting, Proceedings of the 2nd International Conference on Progress in Additive Manufacturing (Pro-AM 2016), Singapore, 306-311, 2016.

https://dr.ntu.edu.sg/handle/10220/41809

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