ISO 15850:2002 塑料-张力疲劳裂缝扩展测定-线性弹性裂缝机械方法
标准编号：ISO 15850:2002
中文名称：塑料-张力疲劳裂缝扩展测定-线性弹性裂缝机械方法
英文名称：Plastics — Determination of tension-tension fatigue crack propagation — Linear elastic fracture mechanics (LEFM) approach
发布日期：2002-06
标准范围
ISO 15850规定了一种用于测量承受在恒定正最小值和恒定正最大值之间变化的循环拉伸载荷的缺口试样中裂纹扩展的方法。测试结果包括作为载荷循环次数的函数的裂纹长度和作为裂纹尖端应力强度因子和能量释放速率的函数的裂纹长度增加速率。检测并报告裂纹扩展中可能出现的不连续性。该方法适用于以下范围的材料:刚性和半刚性热塑性模塑和挤出材料（包括填充和短纤维增强化合物）加上刚性和半刚性热塑性片材；刚性和半刚性热固性材料（包括填充和短纤维增强化合物）加上刚性和半刚性热固性片材。
ISO 15850 specifies a method for measuring the propagation of a crack in a notched specimen subjected to a cyclic tensile load varying between a constant positive minimum and a constant positive maximum value. The test results include the crack length as a function of the number of load cycles and the crack length increase rate as a function of the stress intensity factor and energy release rate at the crack tip. The possible occurrence of discontinuities in crack propagation is detected and reported.The method is suitable for use with the following range of materials:
- rigid and semi-rigid thermoplastic moulding and extrusion materials (including filled and short-fibre-reinforced compounds) plus rigid and semi-rigid thermoplastic sheets;
- rigid and semi-rigid thermosetting materials (including filled and short-fibre-reinforced compounds) plus rigid and semi-rigid thermosetting sheets.
标准预览图
