ISO 17281:2002 塑料-适度高装载率的破裂韧性测定

标准编号：ISO 17281:2002

中文名称：塑料-适度高装载率的破裂韧性测定

英文名称：Plastics — Determination of fracture toughness (GIC and KIC) at moderately high loading rates (1 m/s)

发布日期：2002-11

标准范围

ISO 17281提供了通过线弹性断裂力学（LEMF）方法确定裂纹张开模式（模式I）下塑料断裂韧性的指南，载荷点位移率高达1 m/s。它补充了ISO 13586，以便将其适用范围扩展到略高于后一国际标准范围内的载荷率。ISO 13586中给出的低加载速率下断裂试验的一般原则、方法和规则仍然有效，除非本国际标准另有明确规定，否则应遵循这些原则、方法和规则。这些方法适用于ISO 13586涵盖的相同材料范围。尽管在高加载速率下发生的动态效应在很大程度上取决于所测试的材料以及所使用的测试设备和测试几何体，但此处给出的指南通常有效，无论测试设备、测试几何体和所测试的材料如何。对于载荷-位移图的线性、试样尺寸和缺口尖端锐度，ISO 13586也有同样的限制。

ISO 17281 provides guidelines for determining the fracture toughness of plastics in the crack-opening mode (Mode I) by a linear elastic fracture mechanics (LEMF) approach, at load-point displacement rates of up to 1 m/s. It supplements ISO 13586 so as to extend its applicability to loading rates somewhat higher than is the case in the scope of the latter International Standard.The general principles, methods and rules given in ISO 13586 for fracture testing at low loading rates remain valid and should be followed except where expressly stated otherwise in this International Standard.The methods are suitable for use with the same range of materials as covered by ISO 13586.Although the dynamic effects occurring at high loading rates are largely dependent on the material tested as well as on the test equipment and test geometry used, the guidelines given here are valid in general, irrespective of test equipment, test geometry and material tested.The same restrictions as to linearity of the load-displacement diagram, specimen size and notch tip sharpness apply as for ISO 13586.

标准预览图