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21st CIRP Conference on Electro Physical and Chemical Machining, ISEM XXI, Zurich, Switzerland, 14 Jun 2022 - 17 Jun 2022; Procedia CIRP 113, 398-403 (2022). doi:10.1016/j.procir.2022.09.190 special issue: "21st CIRP Conference on Electro Physical and Chemical Machining, ISEM XXI June, 14 to 17, 2022 in Zurich / edited by Konrad Wegener, Stefan Fabbro, Paulo Matheus Borges", Published by Elsevier, Amsterdam [u.a.]

21. CIRP Conference on electro physical and chemical machining, ISEM XXI, Zurich, Switzerland, 14 Jun 2022 - 17 Jun 2022; Procedia CIRP 113, 392-397 (2022). doi:10.1016/j.procir.2022.09.189 special issue: "21st CIRP Conference on electro physical and chemical machining, ISEM XXI, June, 14 to 17, 2022 in Zurich / Edited by Konrad Wegener, Stefan Fabbro, Paulo Matheus Borges", Published by Elsevier, Amsterdam [u.a.]

20th CIRP Conference on Electro Physical and Chemical Machining, ISEM 2020, online, 19 Jan 2021 - 21 Jan 2021; Procedia CIRP 95, 238-243 (2021). doi:10.1016/j.procir.2020.01.149 special issue: "20th CIRP Conference on Electro Physical and Chemical Machining / Edited by Konrad Wegener, Moritz Wiessner", Published by Elsevier, Amsterdam [u.a.]

20th CIRP Conference on Electro Physical and Chemical Machining, ISEM 2020, online, 19 Jan 2021 - 21 Jan 2021; Procedia CIRP 95, 688-693 (2021). doi:10.1016/j.procir.2020.02.298 special issue: "20th CIRP Conference on Electro Physical and Chemical Machining / Edited by Konrad Wegener, Moritz Wiessner", Published by Elsevier, Amsterdam [u.a.]

5th CIRP Conference on Surface Integrity , Virtuell, CSI 2020, online, 1 Jun 2020 - 5 Jun 2020; Procedia CIRP 87, 273-278 (2020). doi:10.1016/j.procir.2020.02.114 special issue: "5th CIRP Conference on Surface Integrity (CSI 2020) / Edited by Pedro J. Arrazola, Aitor Madariaga", Published by Elsevier, Amsterdam [u.a.]

20th CIRP Conference on Electro Physical and Chemical Machining, ISEM 2020, online, 19 Jan 2021 - 21 Jan 2021; Procedia CIRP 95, 726-730 (2021). doi:10.1016/j.procir.2020.01.170 special issue: "20th CIRP Conference on Electro Physical and Chemical Machining / Edited by Konrad Wegener, Moritz Wiessner", Published by Elsevier, Amsterdam [u.a.]

Modelling of ECM is a powerful tool to improve the cost- and time intensive tool-development process. However, for certain combinations of process and geometric parameters, the simulation results include non-physical negative pressure values inside the electrolyte flow. These phenomena occur near the narrow opening into the machining gap. According to Bernoulli's law, it is plausible that low-pressure values are present in this region possibly leading to evaporation. Based on these facts, it was hypothesized that cavitation could occur during ECM. In order to successfully validate this hypothesis, the electrolyte flow is analysed both in experimental as well as simulation-based studies.

Fir tree slots in engine disks pose a great challenge to the production process, especially due to the use of increasingly filigree geometries. Broaching with high-speed steel (HSS) as cutting tool material has been established as the state of the art process. However, this manufacturing process obtains the disadvantages of high tool costs and long waiting times in case of geometry adaptations. Alternative manufacturing technologies, namely electrochemical machining (ECM) and wire electrical discharge machining (WEDM) offer the potential to replace broaching. Because of their removal mechanism being independent of the mechanical properties of the material, these processes are not hindered by increasingly higher thermomechanical material properties. Furthermore, the tool in WEDM is not specific to geometry, allowing fast adaptations. Nevertheless, the technology specific white layer may reduce the mechanical integrity of the engine disk. ECM in contrast has no negative impact on the rim zone of the workpiece but the tool is still specific to the slot geometry. Consequently, this paper experimentally investigates the three different manufacturing technologies in order to evaluate their capability to manufacture fir tree slots with respect to geometric accuracy and surface integrity. Subsequently, the technology specific manufacturing costs are considered to outline the economic potential of each process while taking into account the influence of the batch size.

19th Machining Innovations Conference for Aerospace Industry 2019, MIC 2019, Garbsen, Germany, 27 Nov 2019 - 28 Nov 2019; Procedia manufacturing 40, 22-26 (2020). doi:10.1016/j.promfg.2020.02.005 special issue: "19th Machining Innovations Conference for Aerospace Industry 2019 (MIC 2019), 27-28 November 2019, Garbsen, Germany / Edited by Berend Denkena", Published by Elsevier, Amsterdam [u.a.]

In sinking electrical discharge machining (SEDM) use of thin graphite electrodes with high aspect ratio sporadically results in geometrical errors. Empirically, such deviations have been attributed to the dynamic bending of electrodes arising from jump flushing movements of modern SEDM machine tools. Due to the process characteristics experimental in situ investigation of the occurring stresses and strains within the electrode appears disproportionately complex. Therefore, in this paper, bending effects are modelled taking into account fluid structure interactions. Results are validated by particle image velocimetry and high-speed camera recordings.

19th CIRP Conference on Electro Physical and Chemical Machining, 23-27 April 2017, Bilbao, Spain / Edited by Ana Aranzabe, Xabier Maidagan, Jose Antonio Sanchez 19th CIRP Conference on Electro Physical and Chemical Machining, ISEM 2018, Bilbao, Spain, 23 Apr 2018 - 27 Apr 2018; Amsterdam [u.a.] : Elsevier, Procedia CIRP 68, 499-504 (2018). doi:10.1016/j.procir.2017.12.081, Published by Elsevier, Amsterdam [u.a.]

19th CIRP Conference on Electro Physical and Chemical Machining, 23-27 April 2017, Bilbao, Spain / Edited by Ana Aranzabe, Xabier Maidagan, Jose Antonio Sanchez 19th CIRP Conference on Electro Physical and Chemical Machining, ISEM 2018, Bilbao, Spain, 23 Apr 2018 - 27 Apr 2018; Amsterdam [u.a.] : Elsevier, Procedia CIRP 68, 768-771 (2018). doi:10.1016/j.procir.2017.12.135, Published by Elsevier, Amsterdam [u.a.]

MIC2015 – 15th Machining Innovations Conference for Aerospace Industry / Edited by Berend Denkena 15th Machining Innovations Conference for Aerospace Industry, MIC 2015, Hannover, Germany, 18 Nov 2015 - 19 Nov 2015; Amsterdam [u.a.] : Elsevier, Procedia CIRP, 35, 67-72 (2015). doi:10.1016/j.procir.2015.08.052, Published by Elsevier, Amsterdam [u.a.]