TY - GEN A1 - Imran, Muhammad A1 - Afzal, Muhammad Junaid A1 - Buhl, Johannes A1 - Bambach, Markus A1 - Dunlap, Anthony A1 - Schwedt, Alexander A1 - Aretz, Anke A1 - Wang, Shuhan A1 - Lohmar, Johannes A1 - Hirt, Gerhard T1 - Evaluation of process-induced damage based on dynamic recrystallization during hot caliber rolling T2 - Production Engineering Y1 - 2020 U6 - https://doi.org/10.1007/s11740-019-00932-0 SN - 1863-7353 SN - 0944-6524 VL - 14 IS - 1 SP - 5 EP - 16 ER - TY - GEN A1 - Bambach, Markus A1 - Fügenschuh, Armin A1 - Buhl, Johannes A1 - Jensch, Felix A1 - Schmidt, Johannes ED - Bambach, Markus T1 - Mathematical Modeling and Optimization for Powder-Based Additive Manufacturing T2 - Procedia Manufacturing; Part of Special issue: 23rd International Conference on Material Forming Y1 - 2020 U6 - https://doi.org/10.1016/j.promfg.2020.04.158 SN - 2351-9789 VL - 47 SP - 1159 EP - 1163 ER - TY - GEN A1 - Bähr, Martin A1 - Buhl, Johannes A1 - Radow, Georg A1 - Schmidt, Johannes A1 - Bambach, Markus A1 - Breuß, Michael A1 - Fügenschuh, Armin T1 - Stable honeycomb structures and temperature based trajectory optimization for wire-arc additive manufacturing T2 - Optimization and Engineering N2 - We consider two mathematical problems that are connected and occur in the layer-wise production process of a workpiece using wire-arc additive manufacturing. As the first task, we consider the automatic construction of a honeycomb structure, given the boundary of a shape of interest. In doing this, we employ Lloyd’s algorithm in two different realizations. For computing the incorporated Voronoi tesselation we consider the use of a Delaunay triangulation or alternatively, the eikonal equation. We compare and modify these approaches with the aim of combining their respective advantages. Then in the second task, to find an optimal tool path guaranteeing minimal production time and high quality of the workpiece, a mixed-integer linear programming problem is derived. The model takes thermal conduction and radiation during the process into account and aims to minimize temperature gradients inside the material. Its solvability for standard mixed-integer solvers is demonstrated on several test-instances. The results are compared with manufactured workpieces. KW - Mixed-integer linear programming KW - Geometric optimization KW - Eikonal equation KW - Heat transmission KW - Additive manufacturing KW - Centroidal Voronoi tesselation Y1 - 2021 U6 - https://doi.org/10.1007/s11081-020-09552-5 SN - 1573-2924 VL - 22 IS - 2 SP - 913 EP - 974 ER - TY - BOOK A1 - Bähr, Martin A1 - Buhl, Johannes A1 - Radow, Georg A1 - Schmidt, Johannes A1 - Bambach, Markus A1 - Breuß, Michael A1 - Fügenschuh, Armin T1 - Stable honeycomb structures and temperature based trajectory optimization for wire-arc additive manufacturing Y1 - 2019 U6 - https://doi.org/10.26127/btuopen-5079 CY - Cottbus ER - TY - BOOK A1 - Schmidt, Johannes A1 - Buhl, Johannes A1 - Fügenschuh, Armin T1 - A finite element approach for trajectory optimization in Wire-Arc Additive Manufacturing Y1 - 2021 U6 - https://doi.org/10.26127/BTUOpen-5575 CY - Cottbus ER - TY - RPRT A1 - Beisegel, Jesse A1 - Buhl, Johannes A1 - Izar, Rameez A1 - Schmidt, Johannes A1 - Bambach, Markus A1 - Fügenschuh, Armin ED - Fügenschuh, Armin T1 - Mixed-integer programming for additive manufacturing Y1 - 2021 U6 - https://doi.org/10.26127/BTUOpen-5731 CY - Cottbus ER - TY - CHAP A1 - Beisegel, Jesse A1 - Buhl, Johannes A1 - Israr, Rameez A1 - Schmidt, Johannes A1 - Bambach, Martin A1 - Fügenschuh, Armin ED - Cristiani, Emiliano ED - Falcone, Maurizio ED - Tozza, Silvia T1 - Mixed-Integer Programming Models for Two Metal Additive Manufacturing Methods T2 - Mathematical Methods for Objects Reconstruction Y1 - 2023 SN - 978-981-9907-75-5 SN - 978-981-9907-76-2 SP - 121 EP - 155 PB - Springer CY - Heidelberg ER - TY - CHAP A1 - Bambach, Markus A1 - Imran, Muhammad A1 - Buhl, Johannes A1 - Härtel, Sebastian A1 - Awiszus, Birgit ED - Szeliga, Danuta ED - Rauch, Łukasz T1 - Towards intelligent materials testing with reduced experimental effort for hot forming T2 - KomPlasTech 2017 : XXIV International Conference on Computer Methods in Materials Technology, January 15-18, 2017, Zakopane, Poland : book of abstracts KW - Intelligent materials testing KW - Hot working Y1 - 2017 SN - 978-83-947091-0-5 SP - 72 EP - 73 PB - AKNET-PRess CY - Krakow ER - TY - GEN A1 - Bambach, Markus A1 - Buhl, Johannes A1 - Hart-Rawung, Thawin A1 - Lechner, Michael A1 - Merklein, Marion T1 - Towards virtual deformation dilatometry for the design of hot stamping process T2 - Procedia Engineering KW - Hot Stamping KW - Dilatometry test KW - Autenite decomposition model Y1 - 2017 U6 - https://doi.org/10.1016/j.proeng.2017.10.945 SN - 1877-7058 N1 - International Conference on the Technology of Plasticity, ICTP 2017, 17-22 September 2017, Cambridge, United Kingdom VL - 207 SP - 1821 EP - 1826 ER - TY - GEN A1 - Conte, Romina A1 - Buhl, Johannes A1 - Ambrogio, Giuseppina A1 - Bambach, Markus ED - Fratini, Livan ED - Di Lorenzo, Rosa ED - Buffa, Gianluca ED - Ingarao, Guiseppe T1 - Joining of aluminum sheet and glass fiber reinforced polymer using extruded pins T2 - Proceedings of the 21st International ESAFORM Conference on Material Forming, ESAFORM 2018, Palermo, Italy, 23-25 April 2018 Y1 - 2018 SN - 978-0-7354-1663-5 U6 - https://doi.org/10.1063/1.5034881 PB - AIP Publishing CY - Melville, New York ER - TY - GEN A1 - Nguyen, Lam A1 - Buhl, Johannes A1 - Bambach, Markus T1 - Decomposition algorithm for tool path planning for wire-arc additive manufacturing T2 - Journal of Machine Engineering Y1 - 2018 U6 - https://doi.org/10.5604/01.3001.0010.8827 SN - 1895-7595 SN - 2391-8071 VL - 18 IS - 1 SP - 96 EP - 107 ER - TY - GEN A1 - Hart-Rawung, Thawin A1 - Buhl, Johannes A1 - Bambach, Markus T1 - Extension of a phase transformation model for partial hardening in hot stamping T2 - Journal of Machine Engineering Y1 - 2018 U6 - https://doi.org/10.5604/01.3001.0012.4619 SN - 1895-7595 SN - 2391-8071 VL - 18 IS - 3 SP - 87 EP - 97 ER -