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STRUCTURAL ANALYSIS OF CARBON STEELS JOINED WITH DIFFERENT WELDING METHODS BY ULTRASONIC TESTING

2019    Arife Kübra DEMİRBAŞ; Sinem ÇEVİK; Adnan KALAYCI

Ultrasonic testing is a method that using high frequency sound waves for detecting cracks, cavities, folds, thickness of residues, gaps and cracks that can occur in the welded parts. High frequency supersonic waves generated by the probe to detect faults in the material must be detected by the probe again after the probe has reflected a discontinuity in the material. Carbon steels show different structural properties depending on the carbon content. As the amount of carbon increases, the hardness, yield and tensile strength of the steels increase, while the ductility and impact strength properties decrease. These steels are generally joined with special electrodes, electric and gas arc welding methods. In this study carbon steel plates were joined by using MIG and electric-arc welding methods. The ultrasonic flaw detection device was used to detect cracks and faults in the welded region, HAZ and base metal on the welded carbon steels.