Reliability approach to the defect assessment methodology with respect to brittle fracture

摘要

Using the advanced first order second moment method (AFOSM), WR3 Committee organized in Japan Welding Engineering Society has discussed the partial safety factors for such parameters as defect size, applied strain and fracture toughness to be adopted in the revised version of the JWES standard 2805 "Method of assessment for defects in fusion welded joints with respect to brittle fracture". This paper describes the Procedure of introducing reliability engineering to the WES2805 standard and the results of calculation of partial safety factors are shown.