Microstructuring of joining areas in aluminum alloy sheets by Jet Electrochemical Machining

Authors

  • Rene Schimmelpfennig Chemnitz University of Technology Professorship Micromanufacturing Technology
  • Matthias Hackert-Oschätzchen Chemnitz University of Technology Professorship Micromanufacturing Technology
  • André Martin Chemnitz University of Technology Professorship Micromanufacturing Technology
  • Andreas Schubert Chemnitz University of Technology Professorship Micromanufacturing Technology

DOI:

https://doi.org/10.21935/tls.v1i2.80

Abstract

In this work the increase of the tensile shear strength by means of microstructuring of the metallic part for ultrasonic vibration assisted joining of hybrid compounds is presented. The aluminum alloy EN AW-5083 and a carbon fibre-reinforced plastic (CFRP) from Bond Laminates are used as a material combination. A suitable method is electrochemical processing (ECM). The microstructuring is carried out with continuous electrolyte free jet machining (Jet-ECM): Characteristic of this technology is the restriction of the electric current to a limited area of the electrolyte jet. After describing the materials and sample geometry used, the Jet-ECM technology and the ultrasonic vibration assisted joining process are explained. The strength of the joint is assessed by means of a tensile shear test. The determined results of the tensile shear strength for hybrid connections between microstructured aluminum sheets and CFRP are compared with those of unstructured aluminum sheets. Furthermore, the influence of the microstructure on the tensile shear strength achieved is discussed using metallographic cross-sections of the joining area.

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Published

2018-01-26

Issue

Vol. 1 No. 2 (2017): Special Issue: 3rd International MERGE Technologies Conference (IMTC), 21st - 22nd September 2017, Chemnitz

Section

Articles

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