ISO 27727:2008 硫化橡胶 疲劳裂纹增长率的测量

标准编号：ISO 27727:2008

中文名称：硫化橡胶 疲劳裂纹增长率的测量

英文名称：Rubber, vulcanized — Measurement of fatigue crack growth rate

发布日期：2008-09

标准范围

ISO 27727:2008规定了一种测定硫化橡胶在长时间重复加载下疲劳裂纹扩展速率的方法。裂纹从试验前试件上的切口尖端开始，并逐渐增长，直到最终变得足够大，足以发生完全断裂。使用纯剪切试件，进行测量以监测循环荷载下的裂纹增长，以获得裂纹增长率，即每循环裂纹长度的增加。通过改变试样中的应变能密度，在不同撕裂能量下进行试验。这是通过改变应变幅度来实现的。

ISO 27727:2008 specifies a method for the determination of the fatigue crack growth rate of vulcanized rubber under repeated loading over an extended period of time. The crack starts from the tip of a cut made in the test piece before the test, and grows progressively until it finally becomes large enough for complete fracture to occur. Using a pure-shear test piece, measurements are made to monitor the crack growth under the cyclic loading in order to obtain the crack growth rate, i.e. the increase in crack length per cycle. Tests are carried out at various tearing energies by varying the strain energy density in the test piece. This is done by changing the strain amplitude.

标准预览图