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Full Field Strain Measurement of Resistant Spot Welds Using 3D Image Correlation Systems

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Abstract

This paper describes local strain measurements of electrical resistance spot welds for three sheet stack-ups of Dual Phase (DP600) and Mild steel under quasi-static tensile loading. The experiments were designed to measure local strain distributions at the vicinity of the spot welds using a modified tensile-shear specimen geometry that allows a strain measurement system to access such area. The electrode tip type used was B-nose, and surface indentation levels were 30% and 50% of the sheet thickness. Local strains at critical locations in resistance spot welds were measured using non-contact 3D image correlation systems (ARAMIS) during quasi-static tension tests. The measured local strains were also compared with results offered by a finite element analysis.

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Acknowledgements

Authors are very thankful to Chrysler LLC for supplying the spot weld specimens for this study. The non-contact strain measurement system was obtained with support from the National Science Foundation under Grant No. 0619269.

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Authors and Affiliations

  1. Automotive Systems Engineering, University of Michigan, Dearborn, MI, 48128, USA

    Z. Lei

  2. Department of Mechanical Engineering, University of Michigan, Dearborn, MI, 48128, USA

    H.-T. Kang & G. Reyes

Authors
  1. Z. Lei
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  2. H.-T. Kang
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  3. G. Reyes
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Correspondence to H.-T. Kang.

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Lei, Z., Kang, HT. & Reyes, G. Full Field Strain Measurement of Resistant Spot Welds Using 3D Image Correlation Systems. Exp Mech 50, 111–116 (2010). https://doi.org/10.1007/s11340-008-9186-5

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  • DOI: https://doi.org/10.1007/s11340-008-9186-5

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