1.1 该方法涵盖运动表面内产生的偏转的定量测量和归一化，作为系统提供的稳定性和舒适性的指示。 1.2 垂直变形提供了直接在撞击点下方的运动表面系统内产生的垂直运动的量度，该垂直运动已经被归一化为标准冲击力。 1.3 面积偏转提供了在冲击期间产生的振动及其在距冲击点预定距离处的强度的量度。 1.4 这种方法不适用于天然草皮、人造草皮或操场安全表面。 1.5 该方法适用于室内和室外表面，包括但不限于:木质和合成球场、步行/慢跑/跑步跑道、网球场、舞蹈表面、有氧运动和一般健身表面。1.6 所描述的方法适用于实验室和现场环境。 1.7 区域挠度测试是可选的，仅适用于区域弹性、组合弹性和混合弹性运动表面。这些包括木质表面、弹性木质底层地板上的合成表面以及具有内部区域弹性部件的点弹性表面。 1.8 以SI单位表示的值将被视为标准值。括号中提供的单位仅供参考。 1.9 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。 1.10 本国际标准是根据关于制定国际标准、指南和准则的原则的决定中确立的国际公认的标准化原则制定的世界贸易组织技术性贸易壁垒委员会发布的建议。 ======意义和用途====== 4.1 运动员和表面之间的动态相互作用对运动员的表现和舒适度非常重要。因此，表面在载荷下变形的能力很重要。过高的垂直变形会通过脚的不稳定来影响运动员。面积弹性和组合弹性地板可以通过评估表面的面积偏转特性来进一步表征。具有低面积挠度水平的地板通过阻尼机制或设计部件来防止或消除振动。 4.2 垂直变形是运动表面广泛使用和公认的特性。管理机构、行业协会和许多国际标准都认识到垂直变形的重要性。这些组织的部分列表包括:国际篮联、MFMA、ASTM、EN。甚至国际足联也利用了这一属性的变体。在北美，区域偏转仍然是普遍规定的，一个管理机构（FIBA）和一个贸易协会（MFMA）目前使用该属性来认证其性能计划所需测试范围内的系统。 4.3 使用斯图加特人造运动员(SAA)进行垂直变形和区域挠度测试，SAA可以通过稍微修改测试方法中的BAA（柏林人造运动员）来创建 F2569 实验室实验应在标准的23±2°C（72±4°F）下进行，但可应客户要求在其他温度下进行测试。当评估运动场表面的偏转特性时，测试应在环境温度下进行。偏离标准温度可能会导致显著不同的性能水平。

1.1 This method covers the quantitative measurement and normalization of deflections generated within a sports surface as an indication of the stability and comfort provided by the system. 1.2 Vertical deformation provides a measure for the vertical motion generated within the sports surface system directly below the point of impact which has been normalized to a standard impact force. 1.3 Area deflection provides a measure of the vibrations generated during an impact and their strength at a pre-determined distance from the point of impact. 1.4 This method is not applicable to natural turf, synthetic turf or playground safety surfaces. 1.5 This method is applicable to indoor and outdoor surfaces including but not limited to: wood and synthetic courts, walk/jog/run tracks, tennis courts, dance surfaces, aerobics and general fitness surfaces. 1.6 The methods described are applicable in both laboratory and field settings. 1.7 Area deflection testing is optional, and only applicable to area-elastic, combined elastic and mixed elastic sport surfaces. These include wood surfaces, synthetic surfaces on a sprung wood subfloor, and point elastic surfaces with an internal area elastic component. 1.8 The values stated in SI units are to be regarded as standard. Units provided in parenthesis are informational only. 1.9 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. 1.10 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 The dynamic interaction between the athlete and the surface is significant to the performance and comfort of the athlete. Therefore, the ability of the surface to deform under load is important. Too high a vertical deformation can affect the athlete through instability of the foot. Area elastic and combination elastic floors may be further characterized by evaluating the area deflection properties of the surface. Floors with low area deflection levels prevent or remove vibrations through damping mechanisms or design components. 4.2 Vertical deformation is a widely used and recognized property of sports surfaces. Governing bodies, trade associations, and a number of international standards recognize the significance of vertical deformation. A partial list of these organizations includes: FIBA, MFMA, ASTM, EN. Even FIFA utilizes a variation of this property. Area deflection is still commonly specified within North America and one governing body (FIBA) and one trade association (MFMA) currently use this property to certify systems within the required testing for their performance programs. 4.3 Vertical deformation and area deflection testing are performed with a Stuttgart Artificial Athlete (SAA) which can be created by slightly modifying the BAA (Berlin Artificial Athlete) from Test Method F2569 . Laboratory experiments are to be conducted at the standard 23 ± 2°C (72 ± 4°F), but tests at additional temperatures may be performed at the request of the client. When evaluating the deflective properties of sports surfaces in the field, testing is to be conducted at the ambient temperature. Deviations from the standard temperature may cause significantly different performance levels.