TESTING DEVICE FOR REACTIVE RESILIENCE

PURPOSE:To eliminate misreading originating from manual and visual measurement and to facilitate the replacement of an elasticity test-piece by providing an image sensor above an arcuate fall area for an impact rod and a high-frequency illumination source below the arcuate fall area. CONSTITUTION:When a solenoid 6 is turned off by turning on a start switch 15, and impact rod 5 is released to fall arcuately by its weight and the impact end at the tip is made to strike on the elasticity sample piece 7 and rebounds by the elasticity of the elasticity sample piece. The image sensor 11, on the other hand, begins to make a scan with the start switch 15 and a sensor element 13 generates a signal of 0V which is shielded by the impact rod 5 starting falling at the same time from light from the high frequency illumination light source 14, so the number of bits of the sensor element 13 which generates this signal is counted. This counted value is inputted to a personal computer 18 through an interface 17 to compute the height of the maximum rebounding of the impact rod, and the height is outputted on a display tube 19 and a printer 20.