Cross Weld Tensile Testing With Digital Image Correlation to Determine Local Strain Response

Siefert, William; Rule, James B.; Alexandrov, Boian S.; Penso, Jorge; Buehner, Michael P.

doi:10.1115/1.0000191v

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2023

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“…This test method provides qualitative data of the tensile properties of the weld joint. The digital image correlation and interferometry-based optical technique during uniaxial tensile test provide spatially resolved yield strength and strain [18][19][20]. Nevertheless, the uniaxial tensile test is a destructive testing method, hence evaluating the mechanical properties of operating structures is not feasible using conventional methods.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of strength in stainless steel weld joints using ball indentation technique

Pavan

Kumar

Arivazhagan

et al. 2023

Materials Science and Technology

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In the present study, strength variations across the type 316LN stainless steel weld joints processed by advanced hot wire tungsten inert gas, activated tungsten inert gas, and hybrid laser metal inert gas welding processes were evaluated using automated ball indentation technique. The secondary dendrite arm spacing (SDAS) associated with welding heat input and welding thermal cycles strongly influenced the strength properties across the weld joints. The strength properties were lower at 823 K compared to 298 K because of thermally activated deformations. The hybrid laser metal inert gas welding process exhibited significantly narrower weld and higher strength in the weld and heat-affected zone due to finer SDAS and grain size, respectively, than the other weld joints.

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Section: Introductionmentioning

confidence: 99%