Abstract
We propose a method to detect the impact force which acts on a golf club head with strain sensors. This method is capable of measuring compression force and shear force and estimating the impact point. We made the large scale model for the impact measurement of a golf club and a ball. We also embedded in a golf club head two MEMS strain sensor units which size was 2 mm x 2 mm x 0.8 mm. This unit detected the strains of 10 kHz on impact in 0.4 ms. The result by the sensor was superior to that by a high speed camera in time resolution.
