지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2011.6
- 수록면
- 260 - 270 (11page)
이용수
초록· 키워드
오류제보하기
The electromechanical impedance(E/M)-based method detects local structural damages based on variations of electrical impedance signatures which are obtained from piezoelectric sensors bonded to the structure and excited in high frequency band. In this method, temperature changes may result in significant impedance variations and lead to erroneous diagnostic results of the structure. To tackle this problem, a new technique providing a 2-dimensional damage feature related to the temperature information is proposed to distinguish the structural damage from the undesirable temperature variation. For experimental tests to validate the proposed method, damages are introduced by bolt loosening to a bolt-jointed steel beam, and impedance signals are measured under varying temperature conditions through a piezoelectric sensor attached on the beam. A freely suspended piezoelectric sensor is additionally utilized to obtain temperature information indirectly from resistance signatures. From a relationship between the damage index (from a constrained sensor) and the temperature (from a freely suspended sensor or a temperature sensor), damages can be detected more clearly under varying temperature compared to other conventional approaches.
목차
Abstract
1. Introduction
2. Theoretical Backgrounds
3. Proposed Temperature Compensation Approach for E/M Impedance-Based SHM
4. Experimental Investigation
5. Conclusion
Acknowledgements
References
참고문헌 (20)
참고문헌 신청
1. [학술대회논문] - M. K. Kim / 2010 / Impedance-based bolt loosening detection under varying temperature and loading / Asian Pacific Workshop on Structural Health Monitoring
2. [학술지(정기간행물)] - J. Min / 2010 / Impedance-based structural health monitoring using neural networks for autonomous frequency range selection / SMART MATERIALS & STRUCTURES 19 (12) : 125011 ~
3. [학술지(정기간행물)] - Jiyoung Min / 2010 / Development of a low-cost multifunctional wireless impedance sensor node / Smart Structures and Systems, An International Journal 6 (6) : 689 ~ 709
4. [학술지(정기간행물)] - T. G. Overly / 2008 / Development of an extremely compact impedance-based wireless sensing device / Smart Materials and Structures 17 (6) : 65011 ~
5. [학술지(정기간행물)] - G. Park / 2003 / Overview of piezoelectric impedance-based health monitoring and path forward / SHOCK AND VIBRATION DIGEST 35 (6) : 451 ~ 463
2. [학술지(정기간행물)] - J. Min / 2010 / Impedance-based structural health monitoring using neural networks for autonomous frequency range selection / SMART MATERIALS & STRUCTURES 19 (12) : 125011 ~
3. [학술지(정기간행물)] - Jiyoung Min / 2010 / Development of a low-cost multifunctional wireless impedance sensor node / Smart Structures and Systems, An International Journal 6 (6) : 689 ~ 709
4. [학술지(정기간행물)] - T. G. Overly / 2008 / Development of an extremely compact impedance-based wireless sensing device / Smart Materials and Structures 17 (6) : 65011 ~
5. [학술지(정기간행물)] - G. Park / 2003 / Overview of piezoelectric impedance-based health monitoring and path forward / SHOCK AND VIBRATION DIGEST 35 (6) : 451 ~ 463
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UCI(KEPA) : I410-ECN-0101-2014-500-003260151