کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
770676 | 1463101 | 2014 | 15 صفحه PDF | دانلود رایگان |
• J-integral solutions were evaluated for stainless steel fracture assessment.
• New J-integral estimation scheme was proposed for Swift-type stress–strain curve.
• J-integral solutions were tabulated for pipes with circumferential surface cracks.
A new J-integral estimation procedure, referred to as the reference plastic slope method, was developed in order to provide J-integral solutions for cold worked and non-cold worked stainless steels. In the reference plastic slope method, J-integrals for bi-linear stress–strain curves were used to derive J-integrals for a material having stress–strain curves fitted well by the Swift-type constitutive equation. The validity of the reference plastic slope method was shown for a two-dimensional through-wall crack and three-dimensional surface cracks. Then, J-integral solutions were tabulated for a circumferential surface crack on a straight pipe under a bending moment for various geometrical and material conditions. It was shown that the error in the allowable load assessments using the obtained solutions was less than 5% at the worst case.
Journal: Engineering Fracture Mechanics - Volume 127, September 2014, Pages 31–45