Relationship between Deformation and Direct Current Potential Difference in Tensile Test of Pure Titanium Thin Wire

Abstract

Thin metal wires have been used for various industrial fields such as electric appliances, automobiles and medical products. Therefore it is necessary to establish a method for detecting damages or estimating deformation amount of thin metal wires. On the other hand, direct current potential difference method can evaluate defects from a direct current potential difference. This method based on the simple principle is very useful and user-friendly. In this study, direct current potential difference during the tensile test of pure titanium thin wire was measured, and the relation between the potential difference and the deformation of the thin wire was investigated as compared with the result of the three dimensional potential analysis. The direct current potential difference was about 10% different from the result of the analysis, which suggests that estimation of the deformation amount is predictable from direct current potential difference.