1.1 这些试验方法涵盖了木基结构板压缩性能的测定。使用的木质结构板包括胶合板、刨花板、定向刨花板以及单板和木质层的复合材料。 1.2 方法A，小试样压缩试验-- 该方法适用于弹性和强度性能均匀的小试样。采用两种类型的压缩试验:一种用于评估弹性和抗压强度性能，另一种仅用于评估最大抗压强度。 1.3 方法B，大型试样的压缩试验-- 该方法采用大型试样，对影响结构面板压缩性能的制造变量和生长特性反应良好。 1.3.1 此方法用于以下目的: 1.3.1.1 结构面板的比较试验， 1.3.1.2 评估含水量对结构板强度性能的影响， 1.3.1.3 确定结构面板的强度特性，以及 1.3.1.4 评估原材料和制造变量对结构面板压缩性能的影响。 1.4 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。 1.5 本标准并不旨在解决与其使用相关的所有安全问题（如果有的话）。 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====== 3.1 这些方法确定了结构面板在面板平面内应力作用下的抗压强度。 3.2 方法A-- 该方法适用于面板内具有均匀性能的结构面板。它可用于评估透明直纹胶合板，并确定化学或防腐处理的效果、结构、相对于应力方向的主要方向以及预计会均匀影响面板的其他变量。 3.3 方法B: 3.3.1 通过这种方法获得的压缩性能是全尺寸面板强度的可靠近似值，可用于设计。 3.3.2 压缩性能受到屈曲的影响；然而，在本次测试中，可以通过限制试样的边缘来消除这种影响。 3.4 建议在进行比较时，始终使用相同的方法和试样尺寸。这是因为试样中包含的材料体积会影响抗压强度，而不管材料性能在整个片材中是均匀的还是由于生长或制造特征的存在而变化很大。

1.1 These test methods cover the determination of the compression properties of wood-based structural panels. Wood-based structural panels in use include plywood, waferboard, oriented strand board, and composites of veneer and of wood-based layers. 1.2 Method A, Compression Test for Small Specimens— This method is applicable to small specimens that are uniform with respect to elastic and strength properties. Two types of compression tests are employed: one to evaluate both elastic and compressive strength properties, and the second to evaluate maximum compressive strength only. 1.3 Method B, Compression Test for Large Specimens— This method employs large specimens and responds well to manufacturing variables and growth characteristics that influence compression properties of structural panels. 1.3.1 This method is intended for the following: 1.3.1.1 Comparative tests of structural panels, 1.3.1.2 Evaluating the effects of moisture content on strength properties of structural panels, 1.3.1.3 Determining the strength properties of structural panels, and 1.3.1.4 Evaluating the effects of raw material and manufacturing variables on compression properties of structural panels. 1.4 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. 1.5 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 ====== 3.1 These methods determine the compressive strength of structural panels in response to stresses acting in the plane of the panel. 3.2 Method A— This method is applicable to structural panels of uniform properties within a panel. It is useful for evaluating plywood of clear, straight-grained veneers, and determining the effect of chemical or preservative treatments, construction, principal direction with respect to direction of stress, and other variables that are expected to uniformly influence the panel. 3.3 Method B: 3.3.1 The compressive properties obtained by this method are a reliable approximation of the strength of a full-size panel, and are intended for use in design. 3.3.2 The compressive properties are influenced by buckling; however, this effect can be eliminated in this test by restraining the edges of the specimens. 3.4 It is recommended that where comparisons are to be made, that the same method and specimen size be used throughout. This is because the volume of material included in a test specimen can influence the compressive strength regardless of whether the material properties are uniform throughout the sheet or vary widely due to the presence of growth or manufacturing features.