A novel portable friction tester was developed for the measurement of skin friction at various points on the human body. The tester consisted of a handle attached to a measurement head and a main housing body. Normal loads and frictional forces were measured by a two-axis load cell equipped with strain gauges. A PC was connected to the device to process the output signal. In order to compensate for interference from the dead load due to handle rotation, an acceleration sensor was built-in. A linear equation showing the relationship between the acceleration and dead load was derived so that dead load could be compensated for at any angle. The results obtained for a curved surface showed the importance and effectiveness of this method. Also, the validity of the coefficient of friction obtained using the portable tester was verified with a stationary pin-on-plate tribotester. The portable tester was applied to a skin friction measurement.
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UCHIDATE et al. (2013) studied this question.
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