标准编号：ISO 29221:2014
中文名称：塑料 模式I平面应变止裂韧性的测定
英文名称：Plastics — Determination of mode I plane-strain crack-arrest toughness
发布日期：2014-01
标准范围
This International Standard specifies a method for the determination of the plane-strain crack-arrest fracture toughness, Kla, of polymeric materials by using a side-grooved, crack-line-wedge-loaded compact tension specimen to obtain a rapid crack run-arrest segment of flat-tensile separation with asatisfactory crack front. This International Standard employs a static fracture analysis determination of the stress intensity factor at a short time after crack arrest. The estimate is denoted as Ka and when certain size requirements are met, the test result provides an estimate, termed as Kla, of the plane-strain crack-arrest toughness of the polymer. The specimen size requirements provide for in-plane dimensions large enough to allow the specimen to be modelled by linear elastic analysis. If the specimen does notexhibit rapid crack propagation and arrest, Ka cannot be determined.
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