Structural steel S235JR is one of the main high-strength steels, while the most common welding methods are gas metal arc welding and shielded metal arc welding. Any of weld-strength-related defects can lead to weaker, less ductile welds, cracking and rupture in various steel constructions. Therefore quality of GMAW and SMAW joints were analyzed by using both the destructive tensile strength test and the non-destructive holographic interferometry method. Tensile test results of 10 arc welded specimens and holograms of harmonically excited specimens are presented in this paper. Specifications of specimens and welding parameters are also reviewed along with methodology of the experimental investigation and criteria of the analysis.
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