1.1 本指南旨在安全和适当地使用从使用单圈粘合接头试样的测试方法中获得的强度值。 1.2 以英寸-磅单位表示的值应被视为标准值。括号中给出的值是对国际单位制的数学转换，仅供参考，不被视为标准值。 1.3 讨论的重点是用小型薄粘附物单圈试样测量的剪切强度。然而，许多因素通常适用于剪切模量、抗拉强度和小型实验室试样测量的拉伸模量。为了简化，本讨论仅限于单圈试样和抗剪强度。 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 =====意义和用途====== 4.1 单圈试样经济实用，易于制作。它们是开发、评估和比较研究中使用最广泛的样本，涉及粘合剂和粘合产品，包括制造质量控制。 4.2 已经开发了特殊的试样和测试方法，可以准确估计粘合剂的真实剪切强度。这些方法消除或最小化了薄被粘物单圈试样的许多缺陷，但更难制作和测试。（见试验方法 D3983 , D4027 , D4562 ，以及 E229 .) 4.3 误用从以下试验方法或实践中获得的强度值 D906 , D1002 , D1144 , D1151 , D1183 , D1780 , D2294 , D2295 , D2339 , D3163 , D3164 , D3165 , D3434 , D3528 , D3632 ，以及 D5868 ，作为允许的设计- 结构接头的应力值可能导致产品故障、财产损失和人身伤害。

1.1 This guide is directed toward the safe and appropriate use of strength values obtained from test methods using single-lap adhesive joint specimens. 1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.3 The discussion focuses on shear strength as measured with small thin-adherend, single-lap specimens. Many factors, however, apply to shear modulus, tensile strength, and tensile modulus measured by small laboratory specimens in general. This discussion is limited to single-lap specimens and shear strength only for simplification. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 4.1 Single-lap specimens are economical, practical, and easy to make. They are the most widely used specimens for development, evaluation, and comparative studies involving adhesives and bonded products, including manufacturing quality control. 4.2 Special specimens and test methods have been developed that yield accurate estimates of the true shear strength of adhesives. These methods eliminate or minimize many of the deficiencies of the thin-adherend single-lap specimens, but are more difficult to make and test. (See Test Methods D3983 , D4027 , D4562 , and E229 .) 4.3 The misuse of strength values obtained from such Test Methods or Practices as D906 , D1002 , D1144 , D1151 , D1183 , D1780 , D2294 , D2295 , D2339 , D3163 , D3164 , D3165 , D3434 , D3528 , D3632 , and D5868 , as allowable design-stress values for structural joints could lead to product failure, property damage, and human injury.