{"id":522,"count":7,"description":"Standard Test Method for Measurement of Fracture Toughness.\r\nThis test method covers procedures and guidelines for the determination of fracture toughness of metallic materials using the following parameters: K, J, and CTOD (\u03b4). 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.","link":"https:\/\/techlabsystems.com\/eng\/astm\/astm-e1820\/","name":"ASTM E1820","slug":"astm-e1820","taxonomy":"astm","parent":633,"meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/techlabsystems.com\/eng\/wp-json\/wp\/v2\/astm\/522","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/techlabsystems.com\/eng\/wp-json\/wp\/v2\/astm"}],"about":[{"href":"https:\/\/techlabsystems.com\/eng\/wp-json\/wp\/v2\/taxonomies\/astm"}],"up":[{"embeddable":true,"href":"https:\/\/techlabsystems.com\/eng\/wp-json\/wp\/v2\/astm\/633"}],"wp:post_type":[{"href":"https:\/\/techlabsystems.com\/eng\/wp-json\/wp\/v2\/product?astm=522"},{"href":"https:\/\/techlabsystems.com\/eng\/wp-json\/wp\/v2\/normas?astm=522"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}