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.
이 논문의 연구 히스토리 (3)
2011
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In structural health monitoring (SHM) using electro-mechanical impedance signatures, it is a critical issue for extremely large structures to extract the best damage diagnosis results, while minimizing unknown environmental effects, including temperature, humidity, and acoustic vibration. If the impedance signatures fluctuate because of these factors, these fluctuations should be eliminated because they might hide the characteristics of the host structural damages. This paper presents a long-term SHM technique under an unknown noisy environment for tidal current power plant structures. The obtained impedance signatures contained significant variations during the measurements, especially in the audio frequency range. To eliminate these variations, a continuous principal component analysis was applied, and the results were compared with the conventional approach using the RMSD (Root Mean Square Deviation) and CC (Cross-correlation Coefficient) damage indices. Finally, it was found that this approach could be effectively used for long-term SHM in noisy environments.
목차
ABSTRACT
1. 서론
2. 전기-역학적 임피던스 기반 구조물 건전성 모니터링
3. 조류발전 구조물의 장기 모니터링
4. 주성분 분석을 이용한 구조물의 실시간 모니터링
5. 결론
후기
참고문헌
참고문헌 (14)
참고문헌 신청
2. [학술대회논문] - Bhalla, S / 2002 / Influence of Structureactuator Interactions and Temperature on Piezoelectric Mechatronic Signatures for NDE / ISSS-SPIE Int'l Conferences on Smart Materials Structures and Systems, Bangalore
3. [학술지(정기간행물)] - Giurgiutiu, V / 1999 / Experimental Investigation of E/M Impedance Health Monitoring of Spot-welded Structure Joints / Journal of Intelligent Material Systems and Structures 10 : 802 ~ 812
4. [단행본] - Giurgiutiu, V / 2008 / Structural Health Monitoring with Piezoelectric Wafer Active Sensors / Academic Press : 363 ~ 434
5. [단행본] - Krzanowski, W.J / 2000 / Principals of Multivariate Analysis-A User's Perspective, Revised Edition / Oxford University, Press
6. [학술지(정기간행물)] - Park, S / 2009 / Automated Impedance-based Structural Health Monitoring Incorporating Effective Frequency Shift for Compensating Temperature Effects / JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES 20 (4) : 367 ~ 377
3. [학술지(정기간행물)] - Giurgiutiu, V / 1999 / Experimental Investigation of E/M Impedance Health Monitoring of Spot-welded Structure Joints / Journal of Intelligent Material Systems and Structures 10 : 802 ~ 812
4. [단행본] - Giurgiutiu, V / 2008 / Structural Health Monitoring with Piezoelectric Wafer Active Sensors / Academic Press : 363 ~ 434
5. [단행본] - Krzanowski, W.J / 2000 / Principals of Multivariate Analysis-A User's Perspective, Revised Edition / Oxford University, Press
6. [학술지(정기간행물)] - Park, S / 2009 / Automated Impedance-based Structural Health Monitoring Incorporating Effective Frequency Shift for Compensating Temperature Effects / JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES 20 (4) : 367 ~ 377
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UCI(KEPA) : I410-ECN-0101-2013-559-000315432