Local strain measurement in tensile test of Al/steel dissimilar friction stir weld using digital image correlation
説明
<jats:title>Abstract</jats:title> <jats:p>A6061-T6 aluminum alloy plate was butt welded to type 304 stainless steel plate by a friction stir welding (FSW) technique to fabricate a dissimilar weld. Subsequently, digital image correlation (DIC) analysis was performed on the dissimilar weld to investigate the local deformation behavior near the joint interface under a tensile loading condition. The normal strain in the loading direction concentrated near the interface on both top and bottom surfaces. The positions of the strain-concentrated areas were different on both sides; around 9 mm away from the interface on the top surface and 6 mm away on the bottom surface, which could be attributed to the local softening developed during the FSW process.</jats:p>
