ASTM E 1820 - 13 Standard Test Method for Measurement of Fracture Toughness

American Society for Testing and Materials (ASTM). Current edition approved Nov. 15, 2013. Published January 2014. Originally approved in 1996. Last previous edition approved in 2011 as E1820 – 11. 54 p. This test method covers procedures and guidelines for the determination of fracture toughness of metallic materials using the following parameters: K, J, and CTOD (δ). Toughness can be measured in the R-curve format or as a point value. The fracture toughness determined in accordance with this test method is for the opening mode (Mode I) of loading.