粘合剂 拉伸剪切胶粘件疲劳性能的试验方法

[中文适用范围]： 指定方法的原理是以可被视为交变应力叠加在静态应力（即平均应力）上的方式对样本施加循环应力。 确定给定平均应力和应力幅度下样本失效时的循环次数。 这些值用于建立 SN 曲线，然后可以估计有关接头抗疲劳性的置信区域。 疲劳特性是样本几何形状的函数。 结果与粘合剂的固有特性不相符，不能用于设计目的。 [外文原描述]： The principle of the method specified is cyclically stressing the specimen in a way that may be regarded as the superposition of an alternating stress on a static stress which is the mean stress. The number of cycles at failure of the specimen for a given mean stress and stress amplitude is determined. These values are used to establish SN curves which then permit the estimation of the confidence zone concerning the fatigue resistance of a joint. The fatigue properties are a function of the specimen geometry. The results do not correspond to intrinsic properties of the adhesive and cannot be used for design purposes.