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2479 |
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Tuesday, September 27, 2011, Saal C2.2 2:50 PM Characterization & Testing 1 |
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Adhesive strength evaluation of thermal sprayed coatings by tensile pin test |
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Keiji Sonoya* / University of Yamanashi, Japan Masanobu Nakamura/ University of Yamanashi, Japan Kazuyoshi Ishida/ University of Yamanashi, Japan |
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Selecting the tensile pin test from among the test procedures for evaluating the adhesive strength of sprayed coatings,the authors considered an adhesive strength evaluation technique. The results obtained are summarized as follows: (1)The fracture net stress(Ãnet)cr obtained by the pin test influenced by the shape of coating edge, and we dose not use as an index of the adhesive strength. (2)In the vicinity of the coating edge of the pin test, the stress Ãy in load direction is inversely proportional to the square root of the distance x from the coating edge to the center of pin. (3)The pin test results, by using the stress singularity parameter ºcr, suggested that employing ºcr makes the adhesive strength to be quantitatively evaluated. |