Deformations and Strains Surrounding Weldments Using Moire Interferometry
Research on surface deformation and strain fields surrounding flawed and intact weldments will be reviewed. The principal tool of investigation will be moire interferometry. Experimental results will be compared with existing computational solutions. Three material systems will be presented. A 304 stainless steel butt weld with a nickel filler containing diffusion bond line cracks, a 9-2 1/4 chrome K weldment containing a chromium depletion zone and a commercially pure (CP)/6A1-4V titanium diffusion bond with and without cracks. Issues such as field mixity due to heterogeneous materials, asymptotic field analysis for elastoplastic interface cracks and slip band instability emanating from a diffusion bond line will be addressed.
KeywordsHeat Affect Zone Interface Crack Bond Line Fringe Order Remote Stress
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