| 摘要 |
PURPOSE: A method for sensing damages based on an impedance-guided wave and an impedance-guided wave integration measuring device are provided to efficiently sense a damage of a structure regardless of an environmental change and efficiently measure the impedance and guided waves of a piezoelectric. CONSTITUTION: A method for sensing damages of a structure is as follows. First admittance data is obtained by measuring the admittance of a piezoelectric attached on a structure is obtained in an initial state of a structure(S12). The first admittance is divided into an active portion depending on an interaction of between the piezoelectric and structure and a passive portion depending on natural properties of a first piezoelectric(S20). Second admittance data is obtained by measuring the admittance of the piezoelectric is obtained in an arbitrary state of the structure(S32). The second admittance is divided into an active portion depending on an interaction of between the piezoelectric and structure and a passive portion depending on natural properties of a first piezoelectric(S40). The active portions of the first admittance and second admittance are compared(S54). |
