The Improvement of Young's Modulus Experiment Device for MeasuringMetals by Stretch Method

The main problems existing in the young modulus tester of steel wire are analyzed,and the corresponding improvement measure are put forward:a new measuring platform and a reading scale are designed,and a protective box is added to the original instrument.The improved experimental instrument reads clearly and accurately,and raises the students' ability of hands-on practice,which reducing the experimental error and ensuring the safety of the experiments.