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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Smart Structures and Systems, An International Journal Smart Structures and Systems, An International Journal Vol.19 No.4
- 발행연도
- 2017.1
- 수록면
- 361 - 369 (9page)
이용수
초록· 키워드
오류제보하기
Electromechanical impedance method as an efficient tool in Structural Health Monitoring (SHM) utilizes the electromechanical impedance of piezoelectric materials which is directly related to the mechanical impedance of the host structure and will be affected by damages. In this paper, electromechanical impedance of piezoelectric patches attached to simply support rectangular plate is determined theoretically and experimentally in order to detect damage. A pairs of piezoelectric wafer active sensor (PWAS) patches are used on top and bottom of an aluminum plate to generate pure bending. The analytical model and experiments are carried out both for undamaged and damaged plates. To validate theoretical models, the electromechanical impedances of PWAS for undamaged and damaged plate using theoretical models are compared with those obtained experimentally. Both theoretical and experimental results demonstrate that by crack generation and intensifying this crack, natural frequency of structure decreases. Finally, in order to evaluate damage severity, damage metrics such as Root Mean Square Deviation (RMSD), Mean Absolute Percentage Deviation (MAPD), and Correlation Coefficient Deviation (CCD) are used based on experimental results. The results show that generation of crack and crack depth increasing can be detectable by CCD.
목차
등록된 정보가 없습니다.
참고문헌 (18)
참고문헌 신청
Giurgiutiu, V. / 2005 / Damage detection in thin plates and aerospace structures with the electro-mechanical impedance method / Struct. Hlth. Monit 4(2):99~118
Giurgiutiu, V. / 2002 / Embedded self-sensing piezoelectric active sensors for on-line structural identification / J. Vib. Acoust 124(1):116~125
Khadem, S. E. / 2000 / Introduction of modified comparison functions for vibration analysis of a rectangular cracked plate / J. Sound Vib 236(2):245~258
이준철 / 2016 / Electro-mechanical impedance based monitoring for the setting of cement paste using piezoelectricity sensor / Smart Structures and Systems, An International Journal 17(1):123~134
Li, G. Q. / 2005 / Equivalent electric circuits of thin plates with two-dimensional piezoelectric actuators / J. Sound Vib. 286(1-2):145~165
Giurgiutiu, V. / 2002 / Embedded self-sensing piezoelectric active sensors for on-line structural identification / J. Vib. Acoust 124(1):116~125
Khadem, S. E. / 2000 / Introduction of modified comparison functions for vibration analysis of a rectangular cracked plate / J. Sound Vib 236(2):245~258
이준철 / 2016 / Electro-mechanical impedance based monitoring for the setting of cement paste using piezoelectricity sensor / Smart Structures and Systems, An International Journal 17(1):123~134
Li, G. Q. / 2005 / Equivalent electric circuits of thin plates with two-dimensional piezoelectric actuators / J. Sound Vib. 286(1-2):145~165
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