Optical local strain testing of laser-joined sheet steels

Heinz Haferkamp; Friedrich W. Bach; Ingo Burmester; Matthias Hoefemann

doi:10.1117/12.270023

27 March 1997 Optical local strain testing of laser-joined sheet steels

Heinz Haferkamp, Friedrich W. Bach, Ingo Burmester, Matthias Hoefemann

Proceedings Volume 2993, Lasers as Tools for Manufacturing II; (1997) https://doi.org/10.1117/12.270023
Event: Photonics West '97, 1997, San Jose, CA, United States

Abstract

In order to investigate the progression of tensile strength at the joints of laser beam welded sheet metal, the results of an optical measurement procedure applied during a tension test are being utilized. With the aid of a video camera and an interactive interpretation of the diagrams, the tensile strength of the samples equipped with a measuring grid may be observed during the tension test. This measuring device allows for the investigation of its viscoelasticity and eliminates the local tensile strength in the area of the joint including the heat affected zone. It is our intention to identify the properties of the sheet metal joints, which may serve as an aid for optimizing future production processes and characteristic features.

Citation Download Citation

Heinz Haferkamp, Friedrich W. Bach, Ingo Burmester, and Matthias Hoefemann "Optical local strain testing of laser-joined sheet steels", Proc. SPIE 2993, Lasers as Tools for Manufacturing II, (27 March 1997); https://doi.org/10.1117/12.270023

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