Abstract
The Welding Engineering Standard, WES 2808, has been developed in the Japan Welding Engineering Society (JWES) for assessing the brittle fracture in steel components under seismic conditions. WES 2808 includes two unique ideas: 1) a reference temperature concept for the evaluation of the material fracture toughness under cyclic and dynamic loading, and 2) an equivalent CTOD concept for the correction of CTOD toughness for constraint loss in structural components. The CTOD design curve is employed for the assessment of the crack driving force of components. The revision of WES 2808 is in progress in JWES to expand the range of use and to improve the fracture assessment procedure. This paper describes the key contents of WES 2808.
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