{"id":1455,"count":7,"description":"Plastics \u2013 Determination of fracture toughness (GIC and KIC) \u2013 Linear elastic fracture mechanics (LEFM)\r\nThis International Standard specifies the principles for determining the fracture toughness of plastics in the crack-opening mode (Mode I) under defined conditions. Two test methods with cracked specimens, namely three-point bending tests and compact specimen tensile tests, are defined to accommodate different types of available equipment or different types of material.\r\nThe methods are suitable for use with the following range of materials:\r\n\u2013 rigid and semi-rigid thermoplastic molding materials, extrusion and casting materials;\r\n\u2013 rigid and semi-rigid thermosetting molding and casting materials.\r\nCertain restrictions are imposed on the linearity of the load-displacement diagram, on the width of the sample and on the thickness to ensure validity (see 6.4) since the scheme used assumes a linear elastic behavior of the cracked material and a state of deformation flat in the tip crack. Finally, the crack must be sharp enough so that an even sharper crack does not result in significantly lower values \u200b\u200bof the measured properties.","link":"https:\/\/techlabsystems.com\/eng\/iso\/1-2-3\/iso-13586\/","name":"ISO 13586","slug":"iso-13586","taxonomy":"iso","parent":1395,"meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/techlabsystems.com\/eng\/wp-json\/wp\/v2\/iso\/1455","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/techlabsystems.com\/eng\/wp-json\/wp\/v2\/iso"}],"about":[{"href":"https:\/\/techlabsystems.com\/eng\/wp-json\/wp\/v2\/taxonomies\/iso"}],"up":[{"embeddable":true,"href":"https:\/\/techlabsystems.com\/eng\/wp-json\/wp\/v2\/iso\/1395"}],"wp:post_type":[{"href":"https:\/\/techlabsystems.com\/eng\/wp-json\/wp\/v2\/product?iso=1455"},{"href":"https:\/\/techlabsystems.com\/eng\/wp-json\/wp\/v2\/normas?iso=1455"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}