Review and perspective on fracture toughness testing for pressure vessel steels
This paper presents a critical review and perspective on fracture toughness testing and its progress for metallic materials. It describes the fracture toughness testing and evaluation of four fracture mechanics parameters, including the elastic stress intensity factor K (or elastic energy release rate G) testing, the J-integral testing using conventional/standard specimens, the /-integral testing using small/miniature specimens, the /integral testing using full-scale cylindrical vessels, the ductile-to-brittle transition toughness testing (or master curve testing), and the crack-tip opening displacement (CTOD) or crack-tip opening angle (CTOA) testing. Special attention is paid to the standard specimen /-integral testing that involves the plane strain fracture toughness Icc testing, load-line displacement (LLD) based J-R curve testing, crack mouth opening displacement (CMOD) based J-R curve testing, the normalization method for direct determination of a J-R curve, accurate incremental J-integral equation, and constraintcorrected J-R curve approach for transferring laboratory measured fracture toughness to structural components. In this review, basic experimental estimations, test evaluation procedures, historical efforts, ASTM fracture toughness test standard developments, state-of-the-art progresses and further improvements are overviewed and discussed.
Fracture toughness Stress intensity factor Energy release rate J-integral CTOD CTOA J-R curve
Xiankui Zhu
Energy, Environmental and Material Science Battelle Memorial Institute Columbus, Ohio 43201, USA
国际会议
2011 International Symposium on Structural Integrity 2011国际结构完整性学术研讨会--核工程结构完整性技术 ISSI 2011
合肥
英文
39-49
2011-10-27（万方平台首次上网日期，不代表论文的发表时间）