BS EN ISO 15653-2010 金属材料.准静态断裂韧性测定的统一试验方法

标准号：BS EN ISO 15653-2010
中文标准名称：金属材料.准静态断裂韧性测定的统一试验方法
英文标准名称：Metallic materials - Method of test for the determination of quasistatic fracture toughness of welds
标准类型：H23
发布日期：2010/7/31 12:00:00
实施日期：2010/7/31 12:00:00
中国标准分类号：H23
国际标准分类号：25.160.40
适用范围：This International Standard specifies methods for determining fracture toughness in terms of K (stressintensity factor), δ (crack tip opening displacement, CTOD) and J (experimental equivalent of the J-integral) forwelds in metallic materials.This International Standard is complementary to ISO 12135, which covers all aspects of fracture toughnesstesting of parent metal and which needs to be used in conjunction with this document. This InternationalStandard describes methods for determining point values of fracture toughness. It should not be considered away of obtaining a valid R-curve (resistance-to-crack-extension curve). However, the specimen preparationmethods described in this International Standard could be usefully employed when determining R-curves forwelds. The methods use fatigue precracked specimens which have been notched, after welding, in a specifictarget area in the weld. Methods are described to evaluate the suitability of a weld for notch placement withinthe target area, which is either within the weld metal or within the weld heat-affected zone (HAZ), and then,where appropriate, to evaluate the effectiveness of the fatigue crack in sampling these areas.