C208 マイクロ波によるNi基合金溶接部表面の応力腐食割れの非破壊評価(亀裂の検査・モニタリング技術-(2),OS5 保全・設備診断技術),動力エネルギーシステム部門20周年,次の20年への新展開)

概要

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To detect stress corrosion cracking (SCC) and evaluate its depth on the surface of Ni-base alloys, a microwave microscope was employed. An open-ended coaxial line sensor was used to increase the spatial resolution. The working frequency was 110GHz and the standoff distance between the sensor and the sample was 60μm. The shape of SCC was obtained by microwave imaging. By measuring the amplitude of reflection coefficient, detection of SCC was achieved and V-shaped and W-shaped characteristic signal was obtained. The distribution of SCC depth along the crack length was evaluated using the measured amplitude of reflection coefficient.
一般社団法人日本機械学会の論文
2010-06-20