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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.28 No.6
- 발행연도
- 2021.12
- 수록면
- 761 - 777 (17page)
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This study presents a numerical investigation on the sensitivity of electromechanical (EM) impedance responses toinner damaged concrete of a prestressed anchorage zone. Firstly, the Ottosen yield criterion is selected to simulate the plasticity behavior of the concrete anchorage zone under the compressive loading. Secondly, several overloading cases are selected to analyze inner damage formations in the concrete of the anchorage zone. Using a finite element (FE) model of the anchorage zone, the relationship between applied forces and stresses is analyzed to illustrate inner plasticity regions in concrete induced by the overloading. Thirdly, EM impedance responses of surface-mounted PZT (lead-zirconate-titanate) sensors are numerically acquired before and after concrete damage occurrence in the anchorage zone. The variation of impedance responses is estimated using the RMSD (root-mean-square-deviation) damage metric to quantify the sensitivity of the signals to inner damaged concrete. Lastly, a novel PZT skin, which can measure impedance signatures in predetermined frequency ranges, is designed for the anchorage zone to sensitively monitor the EM impedance signals of the inner damaged concrete. The feasibility of the proposed method is numerically evaluated for a series of damage cases of the anchorage zone. The results reveal that the proposed impedance-based method is promising for monitoring inner damaged concrete in anchorage zones.
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참고문헌 (64)
참고문헌 신청
AASHTO / 2007 / LRFD bridge design specifications, SI units / American Association of State Highway and Transportation
A. B. M. Abdullah / 2015 / Wire Breakage Detection Using Relative Strain Variation in Unbonded Posttensioning Anchors / Journal of Bridge Engineering 20(1):1~12
Demi Ai / 2018 / Monitoring of the load-induced RC beam structural tension/compression stress and damage using piezoelectric transducers / Engineering Structures 154:38~51
Demi Ai / 2019 / Numerical and experimental investigation of flexural performance on pre-stressed concrete structures using electromechanical admittance / Mechanical Systems and Signal Processing 128:244~265
Alejano, L. R. / 2012 / The ISRM Suggested Methods for Rock Characterization, Testing and Monitoring: 2007-2014 / Springer :247~252
A. B. M. Abdullah / 2015 / Wire Breakage Detection Using Relative Strain Variation in Unbonded Posttensioning Anchors / Journal of Bridge Engineering 20(1):1~12
Demi Ai / 2018 / Monitoring of the load-induced RC beam structural tension/compression stress and damage using piezoelectric transducers / Engineering Structures 154:38~51
Demi Ai / 2019 / Numerical and experimental investigation of flexural performance on pre-stressed concrete structures using electromechanical admittance / Mechanical Systems and Signal Processing 128:244~265
Alejano, L. R. / 2012 / The ISRM Suggested Methods for Rock Characterization, Testing and Monitoring: 2007-2014 / Springer :247~252
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