1107 界面き裂を利用した溶射皮膜の密着強度評価法

概要

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A new method for evaluating the tensile adhesive strength of thermal sprayed coatings has been developed by based on the interfacial mechanics. A newly designed test specimen incorporates an artificially introduced circumferential crack to control the stress intensity factor at the crack tip on the interface between a coating and the substrate. The stress intensity factor K_<Int> is employed as a criterion of interfacial debonding. The FE-analysis is used to calculate K_<Int> for actual test specimen. When the results of tensile test are sorted out using the stress intensity factor K_<Int>, universal values are obtained regardless of crack length and specimen diameter, suggesting that employing K_<Int> enables the adhesive strength to be more fundamentally evaluated.
一般社団法人日本機械学会の論文
2003-08-05