ASTM F1473-2007 测量聚乙烯管和树脂的抗裂缝缓慢扩展的切口拉伸试验用标准试验方法
【英文标准名称】: Standard Test Method for Notch Tensile Test to Measure the Resistance to Slow Crack Growth of Polyethylene Pipes and Resins 【原文标准名称】: 测量聚乙烯管和树脂的抗裂缝缓慢扩展的切口拉伸试验用标准试验方法 【标准号】: ASTM F1473-2007 【标准状态】: 现行 【国别】: 【发布日期】: 2007 【实施或试行日期】: 【发布单位】: 美国材料与试验协会(US-ASTM)【起草单位】: F17.40【标准类型】: (Test Method)【标准水平】: ()【中文主题词】: 裂开;抗裂开;切口;管;塑料;树脂;试验【英文主题词】: fracture; notch testing; pipes; polyethylene; resin; slow crack growth【摘要】: This test method is useful to measure the slow crack growth resistance of molded plaques of polyethylene materials at accelerated conditions such as 80x00B0;C, 2.4-MPa stress, and with a sharp notch. The time to failure depends on the following test parameters: temperature; stress; notch depth; and specimen geometry. Increasing temperature, stress, and notch depth decrease the time to failure. Thus, in reporting the time to failure, all the conditions of the test must be specified. 1.1 This test method determines the resistance of polyethylene materials to slow crack growth under conditions specified within.Note 1This test method is known as PENT (Pennsylvania Notch Test) test.1.2 The test is generally performed at 80C and at 2.4 MPa, but may also be done at temperatures below 80C and with other stresses low enough to preclude ductile failure and thereby eventually induce brittle type of failure. Generally, polyethylenes will ultimately fail in a brittle manner by slow crack growth at 80C if the stress is below 2.4 MPa.1.3 The test method is for specimens cut from compression molded plaques. See Appendix X1 for information relating to specimens from pipe.This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.【中国标准分类号】: G33【国际标准分类号】: 23_040_20【页数】: 6P.;A4【正文语种】:
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