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STRAIN GUAGE FOR MEASURING STRESS INTENSITY FACTOR HAVING CRACK MONITORING FUNCTION, STRESS INTENSITY FACTOR CALCULATION METHOD, AND CRACK MONITORING METHOD
STRAIN GUAGE FOR MEASURING STRESS INTENSITY FACTOR HAVING CRACK MONITORING FUNCTION, STRESS INTENSITY FACTOR CALCULATION METHOD, AND CRACK MONITORING METHOD
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机译：具有裂缝监测功能的应力强度因子测量应变仪，应力强度因子计算方法和裂缝监测方法
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摘要
To provide a guage capable of measuring a strain intensity factor facilitating measurement and calculation and accurately getting an evolving status of the crack.SOLUTION: A strain gauge for measuring a stress intensity factor arranges first and second arc-shaped gauge grids G1, G2 inside, and arranges third and fourth arc-shaped gauge grids G3, G4 outside, with a shaft center O as a base point. A first crack detection pattern L1 is arranged close to the inside of the first and second gauge grids G1, G2, and a second crack detection pattern L2 is arranged close to the inside of the third and fourth gauge grids G3, G4.. When the first crack detection pattern L1 is disconnected, energization to the second strain gauge is blocked, and when the second crack detection pattern L2 is disconnected, a power supply to the third strain gauge is blocked. In this way, an evolving status of the crack can be precisely known, thus allowing the estimation of soundness to be confirmed.SELECTED DRAWING: Figure 3
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