A kind of Ball Rebound Tester for Flexible Cellular Polymeric Materials

摘要

The percentage rebound value r is a key parameter for evaluating the resilience of flexible cellular polymeric materials. Usually, researchers use photoelectric detection method to construct the ball rebound tester. But the accuracy of ball rebound tester is hard to measure and keep. This paper analyzed the physics model by mathematical method, simplified the theoretical equation, compared two kinds of approaches mentioned in literature, developed a ball rebound tester, proposed and realized a calibration method for the tester in the end. Nowadays, the tester is distributed and the calibration method has been used in calibrating the ball rebound testers designed with the photoelectric detecting technique.