Effects of natural shoe wear on traction performance: a longitudinal study
Effects of natural shoe wear on traction performance: a longitudinal study
复制标题
DOI：
10.1080/19424280.2021.1994022
复制
发表时间：
2021-10-16
期刊：
影响因子：
3
通讯作者：
Beschorner, Kurt E.
中科院分区：
文献类型：
--
作者：
Hemler, Sarah L.;Pliner, Erika M.;Beschorner, Kurt E.
鞋外底设计是鞋与地面摩擦和防滑的重要因素。具有小的、均匀分离的胎面花纹块的鞋（通常包括在防滑鞋上）由于其增加的摩擦和更好的鞋内流体排水而降低了滑动风险。然而，这些牵引性能指标（摩擦和流体排出）随着磨损而减小。这项研究量化了鞋的牵引性能，以响应自然磨损，并比较了常见的磨损指标之间的关系：时间，步行距离，磨损区域大小（WRS）。参与者在工作场所穿两双鞋长达11个月，步行距离用计步器跟踪。在每个月的穿着后，测量每只鞋的牵引性能和WRS。牵引性能是量化的鞋下可用的摩擦系数和流体力在模拟滑移测试。磨损增加（磨损月数、行走距离和WRS）与牵引性能下降相关。800 mm（2）的WRS可使摩擦力减少16-38%，并使流体力增加286- 528%。3个月和6个月的磨损分别与251 mm（2）和462 mm（2）的WRS值以及203 km和519 km的距离相关。500 km的步行距离与406 mm的WRS相关（2）。这项研究表明，所有这些磨损指标都是鞋牵引性能损失的良好指标。因此，可以选择特定应用中最实用的度量。我们认为，WRS可能是最好的指标，由于用户和环境的磨损率的变化。因此，跟踪鞋类使用和监测鞋外底磨损可以帮助鞋更换建议以减少滑倒和福尔斯。
Footwear outsole design is an important factor for shoe-floor friction and for preventing slipping. Shoes with small, uniformly-separated tread blocks (often included on slip-resistant shoes) have decreased slip risk due to their increased friction and better under-shoe fluid drainage. However, these traction performance metrics (friction and fluid drainage) diminish with wear. This study quantifies shoe traction performance in response to natural wear and compares the relationship between common wear metrics: time, distance walked, and worn region size (WRS). Participants wore two pairs of shoes in the workplace for up to 11 months and the distance walked was tracked with a pedometer. After each month of wear, traction performance and WRS of each shoe were measured. Traction performance was quantified by the under-shoe available coefficient of friction and fluid force during a simulated slip test. Increased wear (months worn, distance walked, and WRS) was associated with decreased traction performance. A WRS of 800 mm(2) was associated with reductions in friction of 16-38% and increases in fluid force by 286-528%. Three and six months of wear were associated with WRS values of 251 mm(2) and 462 mm(2) and distances of 203 km and 519 km, respectively. A walking distance of 500 km was associated with a WRS of 406 mm(2). This study showed that all of these wear metrics are good indicators of shoe traction performance loss. Thus, the most practical metric in a particular application can be selected. We argue that WRS may be the best indicator due to variations in wear rate from the user and environment. Therefore, tracking footwear usage and monitoring outsole wear can aid in shoe replacement recommendations to reduce slips and falls.