QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY
Print ISSN : 0288-4771
Study on COD Testing of Thick Weldment
Katsuya KajimotoMitsuo TaniNobuaki Ikutoh
Author information
JOURNALS FREE ACCESS

1986 Volume 4 Issue 1 Pages 182-186

Details
Abstract

Crack opening displacement (COD) testing is widely used to determine the fracture toughness of steel materials. However, COD tseting of thick weldments involves the problem of a non-uniform shape of fatigue precracking through the thickness due to the influence of welding residual stress. In this study, first, the residual stress distribution in a thick weld metal COD specimen was measured to clarify the cause of the irregular fatigue crack front. Then, initial machined notches of various shapes were tested to select suitable ones which would not affect the material toughness and would not have a non-uniform shape. As a result it was found that a partial arc notch and partial drill hole notch meet the above requirements.

Information related to the author
© by JAPAN WELDING SOCIETY
Previous article Next article
feedback
Top