Hertle S, Kleffel T, Wörz A, Drummer D (2020)
Publication Type: Journal article
Publication year: 2020
Book Volume: 33
Article Number: 101135
DOI: 10.1016/j.addma.2020.101135
The development towards higher individualization and functional density pushes the need towards a flexible production of multi-material and lightweight components. In this paper, extrusion based additive manufacturing was used to produce polymer-metal hybrids with polypropylene and aluminum alloy. For this purpose, a screw-driven extruder on a six-axis robot was used. Due to the adhesion incompatibility of polypropylene and untreated metals, the surface of the aluminum sheets was electrochemically micro-structured. The investigations show that this enables a mechanically stressable joint through the filling of the surface microstructures with polymer. Investigations on lap shear joints reveal a distinct influence of the contact temperature between the polymer and metal onto the lap shear strength. A sufficient contact temperature is required for filling surface microstructures. Thus, increased metal and extrusion temperatures favor higher strengths. Furthermore, the use of a consolidation roll shows beneficial influences in lower temperature ranges due to the application of higher pressures during the polymer strand deposition.
APA:
Hertle, S., Kleffel, T., Wörz, A., & Drummer, D. (2020). Production of polymer-metal hybrids using extrusion-based additive manufacturing and electrochemically treated aluminum. Additive Manufacturing, 33. https://dx.doi.org/10.1016/j.addma.2020.101135
MLA:
Hertle, Sebastian, et al. "Production of polymer-metal hybrids using extrusion-based additive manufacturing and electrochemically treated aluminum." Additive Manufacturing 33 (2020).
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