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DEVICE FOR EVALUATING SOUNDNESS OF STRUCTURE AND METHOD FOR EVALUATING SOUNDNESS OF STRUCTURE USING THE DEVICE
DEVICE FOR EVALUATING SOUNDNESS OF STRUCTURE AND METHOD FOR EVALUATING SOUNDNESS OF STRUCTURE USING THE DEVICE
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机译:评估结构声音的装置和使用该装置评估结构声音的方法
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摘要
PROBLEM TO BE SOLVED: To provide a device for evaluating the soundness of a structure which performs quantitative evaluation of a minute damage about the structure and a method for evaluating the soundness of the structure using the device.;SOLUTION: In this method for evaluating the soundness of the structure which evaluates the damage of the structure by continuously observing the change in electric impedance generated in a piezoelectric element 20 which is attached on the structure 10 while generating a high frequency elastic wave in the structure 10 by applying a voltage to the piezoelectric element 20, the electric impedance is continuously observed by using the damage evaluating index of peak frequency shift quantity ΔF, peak amplitude ratio change rate δ and Q value ratio change rate γ.;COPYRIGHT: (C)2004,JPO
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