1.1 本试验方法包括压应力的测量（ 附注1 ）通过使用加载梁法烧制搪瓷而开发。 附注1: 尽管有些人可能会将该测试方法中使用的计算解释为指示压缩载荷，但在搪瓷行业中，它通常被称为压缩应力。 1.2 该试验方法仅限于使用加载梁法。然而，这种方法包括图表（ 图1 和 图2 ）提供将加载梁测试结果转换为翘曲和环向应力值。 1.3 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SI单位的数学转换，仅供参考，不被视为标准。 1.4 本标准并不旨在解决与其使用相关的所有安全性问题（如果有）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践并确定法规限制的适用性。 1.5 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》中确立的国际公认的标准化原则制定的。 ======意义和用途====== 4.1 所有搪瓷涂层或玻璃涂层在室温下必然处于某种程度的压缩下。所需的压缩或应力程度取决于器皿的类型和物品的最终用途。确定釉质的相对压缩应力的一些方法对于确定釉质对所提出的应用的适用性是必要的。

1.1 This test method covers the measurement of the compressive stresses ( Note 1 ) developed by fired porcelain enamels using the loaded-beam method. Note 1: Although some may interpret the calculations that are used in this test method as indicating compressive load, it is commonly referred to as compressive stress within the porcelain enamel industry. 1.2 This test method is limited to the use of the loaded-beam method. However, this method includes charts ( Fig. 1 and Fig. 2 ) that provide for conversion of loaded-beam test results to warp and ring stress values. 1.3 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. 1.4 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. 1.5 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 All porcelain enamel coatings or glass coatings are by necessity under some degree of compression at room temperature. The desired degree of compression or stress depends upon the type of ware and the end use of the item. Some method of determining relative compressive stress of enamels is necessary to establish the suitability of an enamel for a proposed application.