Abstract
To evaluate sports surfaces, organizations often adopt vertical force attenuation or deformation and horizontal friction tests. Impact attenuation of sports surfaces is especially important for injury prevention. Although the mechanical tests are reproducible and the criteria for these tests are very strict, they have an issue of ‘particularity’: that is, the material behaviour may change when the mechanical properties of the drop mass spring systems are changed. To avoid this, we proposed an evaluation method using a mathematical surface model and computer simulation in previous studies that examines vertical properties only, while a two-dimensional impact test device for examining the two-dimensional cushioning characteristics of sport surfaces using a parallelogram linkage was proposed in previous studies. In this study, the data acquired from the two-dimensional device was confirmed by high-speed video. We then conducted two-dimensional impact tests – 69 trials, including 5 slip trials – using a varie...
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