1.1本规程涵盖了测量轮胎花纹的凹槽或空隙面积的技术。空隙面积是在轮胎胎面的墨迹上测量的，该墨迹是静态加载在压板上的重量级纸张上的。 1.2本程序旨在作为测量轮胎印痕中凹槽或胎面花纹空隙区域的参考实践。该技术可用于任何没有特殊设备的实验室，尽管也通常采用更复杂的程序，如光学或摄像机过程。 1.3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。 1.4 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。 ====意义和用途====== 轮胎的胎面，即与路面接触的环形带，通常包含由凹槽或空隙定义的几何胎面花纹元素。这些用于为轮胎提供适当的牵引性能，主要是在潮湿或雪地条件下- 有盖道路。 轮胎花纹的一个特征对牵引力和轮胎磨损行为都很重要，即百分比或 “ 分数的 ” 凹槽区域。根据总接触面积或总接触面积计算槽面积分数。

1.1 This practice covers a technique for measuring the groove or void area of a tire tread pattern. The void area is measured on the inked impression of a tire tread statically loaded against heavyweight paper on a load platen. 1.2 This procedure is intended to serve as a reference practice for measuring groove or tread pattern void areas in a tire-footprint impression. This technique is usable by any laboratory without special equipment although more sophisticated procedures are also commonly employed, such as optical or video camera processes. 1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 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 and health practices and determine the applicability of regulatory limitations prior to use. ====== Significance And Use ====== The tread of a tire, the annular band that contacts the pavement, normally contains geometric tread pattern elements that are defined by grooves or voids. These are employed to confer appropriate traction properties to the tire, mainly on wet or snow-covered roads. One characteristic feature of tire tread patterns that is important for both traction and tire wear behavior is the percent or “ fractional ” groove area. The groove-area fraction is calculated with respect to the total or gross contact area.