@misc{BaehrBuhlRadowetal., author = {B{\"a}hr, Martin and Buhl, Johannes and Radow, Georg and Schmidt, Johannes and Bambach, Markus and Breuß, Michael and F{\"u}genschuh, Armin}, title = {Stable honeycomb structures and temperature based trajectory optimization for wire-arc additive manufacturing}, series = {Optimization and Engineering}, volume = {22}, journal = {Optimization and Engineering}, number = {2}, issn = {1573-2924}, doi = {10.1007/s11081-020-09552-5}, pages = {913 -- 974}, abstract = {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.}, language = {en} } @misc{BrykarczykLenzNeumannetal., author = {Brykarczyk, Daniel and Lenz, Wolfgang and Neumann, Andreas and Bambach, Markus}, title = {Erh{\"o}hung der Lebensdauer metallischer Strahlheizrohre durch den Einsatz strukturierter Bleche}, series = {Prozessw{\"a}rme}, volume = {4}, journal = {Prozessw{\"a}rme}, issn = {2567-3742}, language = {de} } @misc{LenzBrykarczykPfeiferetal., author = {Lenz, Wolfgang and Brykarczyk, Daniel and Pfeifer, Herbert and Neumann, Andreas and Bambach, Markus}, title = {Theoretical limits of the increase of radiative heat transfer by increased surface areas of radiant tubes}, series = {Applied Thermal Engineering}, volume = {Vol. 184}, journal = {Applied Thermal Engineering}, issn = {1359-4311}, doi = {10.1016/j.applthermaleng.2020.116246}, pages = {7}, language = {en} } @misc{StendalEisentrautSizovaetal., author = {Stendal, Johan Andreas and Eisentraut, Mark and Sizova, Irina and Bolz, Sebastian and Weiß, Sabine and Bambach, Markus}, title = {Accelerated hot deformation and heat treatment of the TiAl alloy TNM-B1 for enhanced hot workability and controlled damage}, series = {Journal of Materials Processing Technology}, volume = {Vol. 291}, journal = {Journal of Materials Processing Technology}, issn = {0924-0136}, doi = {10.1016/j.jmatprotec.2020.116999}, pages = {12}, language = {en} } @misc{HemesMeinersSizovaetal., author = {Hemes, Susanne and Meiners, Frank and Sizova, Irina and Hama-Saleh, Rebar and R{\"o}hrens, Daniel and Weisheit, Andreas and H{\"a}fner, Constantin Leon and Bambach, Markus}, title = {Microstructures and Mechanical Properties of Hybrid, Additively Manufactured Ti6Al4V after Thermomechanical Processing}, series = {Materials}, volume = {14}, journal = {Materials}, number = {4}, issn = {1996-1944}, doi = {10.3390/ma14041039}, language = {en} } @phdthesis{Emdadi, author = {Emdadi, Aliakbar}, title = {High-Temperature Deformation Behavior of Intermetallic Titanium and Iron Aluminides Produced by Spark Plasma Sintering}, publisher = {Shaker Verlag}, address = {D{\"u}ren}, isbn = {978-3-8440-7933-3}, pages = {ii, 115}, language = {en} } @misc{BlumbergLiBesongetal., author = {Blumberg, Julian and Li, Zhoulong and Besong, Lemopi Isidore and Polte, Mitchel and Buhl, Johannes and Uhlmann, Eckart and Bambach, Markus}, title = {Deformation error compensation of industrial robots in single point incremental forming by means of data-driven stiffness model}, series = {26th International Conference on Automation and Computing (ICAC), 2-4 Sept. 2021, Portsmouth, United Kingdom}, journal = {26th International Conference on Automation and Computing (ICAC), 2-4 Sept. 2021, Portsmouth, United Kingdom}, isbn = {978-1-86043-557-7}, doi = {10.23919/ICAC50006.2021.9594138}, pages = {6}, language = {en} } @misc{BambachSizovaSzyndleretal., author = {Bambach, Markus and Sizova, Irina and Szyndler, Joanna and Bennett, Jennifer and Hyatt, Greg and Cao, Jian and Papke, Thomas and Merklein, Marion}, title = {On the hot deformation behavior of Ti-6Al-4V made by additive manufacturing}, series = {Journal of Materials Processing Technology}, volume = {288}, journal = {Journal of Materials Processing Technology}, issn = {0924-0136}, doi = {10.1016/j.jmatprotec.2020.116840}, language = {en} } @misc{SizovaSviridovBambachetal., author = {Sizova, Irina and Sviridov, Alexander and Bambach, Markus and Eisentraut, Mark and Hemes, Susanne and Hecht, Ulrike and Marquardt, Axel and Leyens, Christoph}, title = {A study on hot-working as alternative post-processing method for titanium aluminides built by laser powder bed fusion and electron beam melting}, series = {Journal of Materials Processing Technology}, volume = {291}, journal = {Journal of Materials Processing Technology}, issn = {0924-0136}, doi = {10.1016/j.jmatprotec.2020.117024}, pages = {14}, language = {en} } @misc{BambachImranSizovaetal., author = {Bambach, Markus and Imran, Muhammad and Sizova, Irina and Buhl, Johannes and Gerster, Stephan and Herty, Michael}, title = {A soft sensor for property control in multi-stage hot forming based on a level set formulation of grain size evolution and machine learning}, series = {Advances in Industrial and Manufacturing Engineering}, journal = {Advances in Industrial and Manufacturing Engineering}, number = {2}, issn = {2666-9129}, doi = {10.1016/j.aime.2021.100041}, pages = {13}, language = {en} }