OS10-1-3 Study on Plastic Deformation in Elasto-Visco/plastic Material by using Thermography

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Abstract

In order to evaluate the plastic behaviors of mechanical members, we pay attention to surface temperature that is generated by plastic deformation. The plastic energy exhausted by plastic deforming is largely converted into heat. The generation closely related the plastic deformation. In the present study, the tensile tests were performed on 99% Pure Titanium with a center crack.We measured the surface temperature rise by using the thermocouples and TVS( ThermalVideo System) under the plastic deformation and crack propagation. Furthermore FEM elasto-visco/plastic analysis couples with transient heat conduction analysis was performed. The surface temperature distributions under plastic deformation in FEM simulation good agreed with the experimental ones and the propriety of this non-contact measurement system of macroscopic plastic deformation and fracture process by thermography method was shown.

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