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首页> 外文会议>6th Pan-Pacific Conference on Occupational Ergonomics null null >A Study for Characterising Topography Changes of Shoe Surfaces in the Early Stage of Slip Resistance Measurements-Bearing Area Curve
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A Study for Characterising Topography Changes of Shoe Surfaces in the Early Stage of Slip Resistance Measurements-Bearing Area Curve

机译：表征防滑性能早期的鞋表面形貌变化的研究-轴承面积曲线

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摘要

When surface topographies of shoe heels are examined, it is possible to have surface profiles with almost identical values of roughness parameters but with different profile forms due to their disparate friction and wear behaviors. Hence,it is desirable to find a way to evaluate the profile more accurately. The concept of bearing area (BA) curve is considered as a best way to assess exclusively the functional behaviors of highly stressed and repeated sliding processes such as walking modes. The main problem is to find a suitable level for making a mapping analysis. The easiest and common methods simply truncate the surface at a given height before the analysis is carried out. However, in this study, the truncation is approached more systematically by the cross-sectional images obtained from a laser scanning confocal microscope. The cross-sectional (x-z) images are constructed from a series of horizontal line scans acquired while stepping the sample stage vertically in the z-direction. The results suggest that truncations take place at the actual contacting area. Since most deformations of the heel surfaces were plastic, it clearly moved material from one area to another. This is clearly seen when BA curves of the shoe surfaces are compared before and after the friction tests. The results from this study would be used to compare what had happened to the surfaces of shoes during the repetitive sliding wear from a functional point of view. Since the absolute heights of the shoe surfaces are largely changed due to deformation, it is of vital importance to find some significant reference levels from which the curves could be positioned.
机译：当检查鞋跟的表面形貌时，由于其不同的摩擦和磨损行为，可能具有具有几乎相同的粗糙度参数值但具有不同轮廓形式的表面轮廓。因此，期望找到一种更准确地评估轮廓的方法。承载面积（BA）曲线的概念被认为是专门评估高应力和重复滑动过程（例如步行模式）的功能行为的最佳方法。主要问题是找到适合进行映射分析的级别。最简单，最常见的方法是在进行分析之前，先将表面截断到给定的高度。但是，在这项研究中，截断是通过从激光扫描共聚焦显微镜获得的横截面图像更系统地进行的。横截面（x-z）图像是通过在z方向上垂直移动样品台时获取的一系列水平线扫描构建的。结果表明，截断发生在实际的接触区域。由于后跟表面的大多数变形是塑性的，因此很明显它将材料从一个区域移动到另一个区域。当在摩擦测试之前和之后比较鞋表面的BA曲线时，可以清楚地看到这一点。这项研究的结果将用于从功能的角度比较重复滑动磨损期间鞋表面的状况。由于鞋表面的绝对高度会因变形而发生很大的变化，因此找到一些重要的基准位置（可以从中定位曲线）至关重要。

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