1.1本试验方法描述了测定直径为3.2 mm的拉挤玻璃纤维增强热固性塑料棒拉伸性能的程序( 1. / 8. 英寸。）至25.4毫米（1英寸）。几乎不需要制备试样；然而，需要适当尺寸的可重复使用的铝片夹持适配器（图1），以防止夹持处的试样过早失效。 1.2以国际单位制表示的数值应视为标准。括号中给出的值仅供参考。 1.3 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。 注释3和注释4中给出了具体的危害说明。 笔记 1-没有已知的ISO等效于本试验方法。 ====意义和用途====== 拉挤杆的高轴向抗拉强度和低横向抗压强度结合在一起，在使用传统测试夹具确定这种材料的抗拉强度时提出了一些独特的问题。传统夹持方法中产生的高横向压缩力往往会压碎杆，从而导致过早失效。在本试验方法中，与杆形状成等高线的铝合金凸耳减少了施加给杆的压缩力，从而克服了传统试验夹具的有害影响。 拉伸性能受试样制备、应变速率、热历史和测试时的环境条件的影响。因此，如果需要精确的比较结果，则必须仔细控制这些因素。 拉伸性能为许多工程设计目的提供了有用的数据。然而，由于这些特性对应变率、温度和其他环境条件的高度敏感性，本试验方法获得的数据本身不应考虑用于涉及荷载的应用- 与试验条件相差很大的时间尺度或环境条件。在这种差异明显的情况下，应根据预期的使用要求在广泛的条件下确定对应变率（包括冲击和蠕变）的敏感性以及对环境的敏感性。

1.1 This test method describes a procedure for determining the tensile properties of pultruded, glass-fiber-reinforced thermosetting plastic rod of diameters ranging from 3.2 mm ( 1 / 8 in.) to 25.4 mm (1 in.). Little test specimen preparation is required; however, reusable aluminum tab grip adapters (Fig. 1) of appropriate size are required to prevent premature failure of the specimens at the grips. 1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.3 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. Specific hazards statements are given in Note 3 and Note 4. Note 1—There is no known ISO equivalent to this test method. ====== Significance And Use ====== The high axial-tensile strength and the low transverse-compressive strength of pultruded rod combine to present some unique problems in determining the tensile strength of this material with conventional test grips. The high transverse-compressive forces generated in the conventional method of gripping tend to crush the rod, thereby causing premature failure. In this test method, aluminum-alloy tabs contoured to the shape of the rod reduce the compressive forces imparted to the rod, thus overcoming the deleterious influence of conventional test grips. Tensile properties are influenced by specimen preparation, strain rate, thermal history, and the environmental conditions at the time of testing. Consequently, where precise comparative results are desired, these factors must be carefully controlled. Tensile properties provide useful data for many engineering design purposes. However, due to the high sensitivity of these properties to strain rate, temperature, and other environmental conditions, data obtained by this test method should not, by themselves, be considered for applications involving load-time scales or environmental conditions that differ widely from the test conditions. In cases where such dissimilarities are apparent, the sensitivities to strain rate, including impact and creep, as well as to environment, should be determined over a wide range of conditions as dictated by the anticipated service requirements.