Importance and Ingenuity of Vibration Noise Reduction on High-Speed Tensile Tests

User Benefits

- Accurate measurement with low noise can be conducted thanks to our testing machine and fixture mechanism. - The vibration noise can be removed by using a newly developed filter. - The strain rate dependency of material properties can be evaluated at speeds up to 20 m/s.

Introduction

Recently, vehicle weight reduction has become a key factor to improve fuel efficiency, and in order to achieve this goal, accurate measurement of the material mechanical properties is required. In fact, requests for impact tests in addition to traditional static tests are rapidly increasing as vehicles might be subject to impact loads due to collisions. Among the materials, plastics are characterized by viscoelasticity, and the dependency of their mechanical properties on the test speed is known and reported in the literature. On the other hand, high test speeds lead to undesirable vibrations generated in the testing machine and the resulting noise is one of the main problems to be tackled when dealing with impact tests. In this regard, the high-speed impact testing machine HITS-TX structure allows for a reduction of the vibrations, and the newly developed filter function further contributes to obtaining clear data. This article introduces the action and features of HITS-TX for the reduction of vibration noise. The reference data have been obtained using two kinds of resins.

November 2, 2021 GMT