Evaluating the Mechanical Response of Materials against Small Impact Force

Abstract

This paper deals with mechanical response of material against small impact force using levitation mass method (LMM). Material properties observed by evaluate deformation of material and force acting on the material. In LMM, the force acting on the material is generated by collision of a levitated mass which has very small friction. The impact Force and deformation of material which cause of the collision is accurately measured by optical interferometer. A dynamic impact force, less than 10 N are applied to the three types of material. The mechanical response of material is indicated by time of collision, Whv and ratio of loss energy. It shows stiffness properties and elasticity level of material, respectively.

Development of a New Data Processing System for Increasing the Accuracy of a Levitation Mass Method (LMM) based Measurement

“…Force transducer is usually calibrated by a standard method using a static load condition. In the materials testing, the forces acting on the material to be tested was measured using force transducer and a displacement of the point subjected force is measured using a displacement transducer [3], [8], [10]- [14]. There are two main problems in the dynamic force calibration method.…”