1. GB/T 21143-2014, Metallic materials-Unified method of test for determination of quasistatic fracture toughness. National Standards of the People's Republic of China, China Standards Press, Beijing, 2014. (in Chinese).
2. ASTM E399-2020, Standard Test Method for Linear-Elastic Plane-Strain Fracture Toughness KIC of Metallic Materials. American Society for Testing and Materials, Pennsylvania, USA: ASTM International, 2020.
3. BS 7448-1-1991, Fracture Mechanics Toughness Tests. Part 1: Method for Determination of KIC, Critical CTOD and Critical J Values of Metallic Materials. British Standard Institution, London: British Standard Institution, 1991.
4. ISO 12135-2021, Metallic Materials-Unified Method of Test for the Determination of Quasistatic Fracture Toughness. International Organization for Standardization, Switzerland: International Standards, 2021.
5. A new method to estimate the plane strain fracture toughness of materials;Li;Fatigue Fract Engng Mater Struct,2019