1. ASTM E1820-15a. Standard test method for measurement of fracture toughness. Annual Book of ASTM Standards. West Conshohocken, PA: American Society for Testing and Materials; 2015.
2. ISO 12135. Metallic materials–unified method of test for the determination of quasi-static fracture toughness. Annual Book of ISO Standards. Switzerland: International Standard Organization; 2002.
3. GB/T 21143-2014. Metallic materials-Unified method of test for determination of quasistatic fracture toughness. Beijing: Standards Press of China; 2007 [in Chinese].
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5. Efficient fracture assessment of pipelines. A constraint-corrected SENT specimen approach;Chiesa;Eng Fract Mech,2001