1.1 本试验方法评估了用于窗户、门和天窗框架的热破坏复合隔热层在热循环前后的纵向剪切强度。它还评估了热障在热循环后保持其纵向尺寸的能力。 1.2 本试验方法适用于所有由结构隔热层构成的开窗产品，结构隔热层沿其长度固定在相邻金属型材上 1.3 本试验方法适用于多种类型的开窗框架类型，而不是针对任何单一框架结构类型。 1.4 以国际单位制表示的数值应视为标准值。 本标准不包括其他计量单位。 1.5 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、健康和环境实践，并确定监管限制的适用性。 1.6 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）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》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 隔热层需要足够的结构强度来承受施加在窗洞构件上的荷载，同时在其整个使用寿命内减少通过框架构件深度的热传递。 5.2 本试验方法不包括应力于隔热层的持续重力、弯曲和拉伸载荷（即玻璃填充物重量、风载荷和玻璃垫圈压力）。 5.3 鼓励读者阅读AAMA TIR-A8了解关于热障和测试的更多信息。

1.1 This test method evaluates the longitudinal shear strength before and after thermal cycling for thermally broken composite thermal barriers used in framing of windows, doors, and skylights. It also evaluates the ability of a thermal barrier to maintain its longitudinal dimension after thermal cycling. 1.2 This test method is applicable to all fenestration products that are constructed with structural thermal barriers that are affixed along their length to the adjoining metal profile 1.3 This test method is meant to be applicable to many types of fenestration frame types and is not meant to be specific to any single frame construction type. 1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 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 ====== 5.1 Thermal barriers require sufficient structural strength to carry the loads imposed on fenestration members while reducing the heat transfer through the depth of the framing members throughout their service life. 5.2 Sustained gravity, bending and tensile loads that stress the thermal barrier (that is, glazing infill weight, wind loads, and glazing gasket pressure) are not covered by this test method. 5.3 The reader is encouraged to read AAMA TIR-A8 for further information on thermal barriers and testing.