J0430102 引張負荷を受ける2-D溶射補修材の有限要素解析([J043-01]厚膜形成技術と厚膜の機械特性評価(1),機械材料・材料加工部門)

Abstract

In this study, capability and reliability of advanced repairing technology based upon thermal spraying technique were examined. In order to achieve this purpose, residual stress and the critical strain up to the delamination in the part were examined experimentally and identified by numerical analysis. For the tensile testing, the repairing geometry was assumed to be four types of the cutting angle (20, 30, 40, 50deg) under the same depth and length. Afterward, we carried out FEM analysis about the same condition as examination. As the results, crack initiation strain and delamination strain were increased with cutting angle in the repaired part. On the other hand, residual stress was almost constant in compressive side. FEM analysis revealed that the crack initiates at the corner in the repairing part and propagates along the interface.