2009•Kikai Zairyou, Zairyou Kakou Gijutsu Kouenkai kouen rombunshuu/Kikai Zairyo, Zairyo Kako Gijutsu Koenkai koen ronbunshuOpen access
110 Residual Stress Measurement of Butt Weld of Thick Plates Using X-ray Diffraction Technique
Koji Hattori, Mitsuyoshi Nakatani, Masamitsu Abe, Toshihiko Sasaki
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Abstract
This paper describes about the application of X-ray diffraction technique to the butt weld of thick plates. Weld of a large steel structure is conducted to a cold cracking induced by a residual stress. The PWHT prevent the cold cracking by a residual stress. There are few reports on the effect of PWHT on the residual stress relaxation. Measurement was made on the surface of butt weld of thick plates. As a result of the experiment, it was found that the butt welding residual stress was relaxed by PWHT.
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