ISO 23228:2011 流体输送用热塑性塑料管 用平面应变带槽拉伸（PSGT）试样测定模塑材料的抗应力破裂

标准编号：ISO 23228:2011

中文名称：流体输送用热塑性塑料管 用平面应变带槽拉伸（PSGT）试样测定模塑材料的抗应力破裂

英文名称：Thermoplastics pipes for the conveyance of fluids — Determination of the stress-rupture resistance of moulding materials using plain strain grooved tensile (PSGT) specimens

发布日期：2011-10

标准范围

ISO 23228:2011规定了通过在应力断裂试验中使用平面应变槽拉伸试样测定管道和配件用热塑性树脂和化合物的失效时间的方法。沟槽拉伸试样在单轴载荷下产生双轴应力状态，这被认为是压力固体壁塑料管中应力状态的指示。轴向应力与横向应力之比近似于带压端盖实心管试样的应力比。旨在利用这些试样上产生的数据来确定管道和管件以及实验管道树脂的模塑材料的抗应力断裂（失效时间）能力。该方法也适用于难以测试的管道的应力断裂评估，例如:。g、 大直径管道，包括其批量释放试验。ISO 23228:2011不打算取代ISO 1167的应力断裂试验，该试验使用内部加压端盖管道。

ISO 23228:2011 specifies a method for the determination of the time-to-failure of thermoplastics resins and compounds for piping and fitting applications by the use of a plane strain grooved tensile specimen in a stress-rupture test.The grooved tensile specimen produces a biaxial state of stress on uni-axial loading, which is taken to be indicative of the stress conditions found in pressurized solid-wall plastics pipes. The ratio of the stress in the axial direction to the transverse direction approximates that for a pressurized end-capped solid-wall pipe specimen.It is intended that the data generated on these specimens be utilized to determine the stress-rupture (time-to-failure) resistance of moulding materials for pipes and fittings as well as experimental piping resins.This method is also applicable to stress-rupture evaluations of pipes which are difficult to test, e.g. larger diameter pipes, including their batch release tests.ISO 23228:2011 is not intended to replace the stress-rupture test of ISO 1167, which uses internally pressurized end-capped pipes.

标准预览图