...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Transportation Research Record >Precision of Locked-Wheel Testers for Measurement of Roadway Surface Friction Characteristics
【24h】

Precision of Locked-Wheel Testers for Measurement of Roadway Surface Friction Characteristics

机译：锁紧式车轮测试仪测量巷道表面摩擦特性的精度

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The present state-of-the-art locked-wheel testers for roadway surface friction evaluation are fully automated. As with any testing using subject-driven instrumented devices, the major concerns of the end usefulness of the resulting data are accuracy and precision. Although a level of uncertainty is always inherent in any measurement process, it must also be appropriately quantified or assessed. Therefore, the Florida Department of Transportation (FDOT) initiated a field study to assess the level of precision of its own locked-wheel testers for field measurements. Friction measurements were acquired by using four friction locked-wheel testers concurrently on a number of asphalt section sites. These test sections were randomly selected to include both open- and dense-graded surface mixtures. The collected friction data were first analyzed to determine the friction characteristics at each test location, in terms of a friction number at 40 mph with a standard ribbed test tire (FN_(40R)). The results were then used as a basis for an evaluation of the repeatability and reproducibility of the friction units. In addition, the effects of pavement surface texture on friction measurements were assessed. A description of the testing program, the data collection effort, and the subsequent analyses and findings is presented.
机译：用于道路表面摩擦力评估的最新技术锁轮测试仪是全自动的。与使用主题驱动的仪器进行的任何测试一样，最终数据的最终用途的主要关注点是准确性和准确性。尽管不确定性水平始终是任何测量过程中固有的，但也必须对其进行适当的量化或评估。因此，佛罗里达州交通运输部（FDOT）发起了一项现场研究，以评估其自己的锁轮测试仪进行现场测量的精度水平。摩擦测量是通过同时在多个沥青截面部位使用四个摩擦锁定轮测试仪获得的。这些测试部分是随机选择的，以包括开放级和密集级的表面混合物。首先分析收集的摩擦数据，以确定每个测试位置的摩擦特性，以标准带肋测试轮胎（FN_（40R））在40 mph时的摩擦数表示。然后将结果用作评估摩擦单元重复性和再现性的基础。另外，评估了路面表面质地对摩擦测量的影响。介绍了测试程序，数据收集工作以及随后的分析和发现的描述。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号