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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.18 No.3
- 발행연도
- 2016.1
- 수록면
- 525 - 540 (16page)
이용수
초록· 키워드
오류제보하기
The CFRP-confined circular concrete-filled steel tubular column is composed of concrete, steel, and CFRP. Its failure mechanics are complex. The most important difficulties are lack of an available method to establish a relationship between a specific damage mechanism and its acoustic emission (AE) characteristic parameter. In this study, AE technique was used to monitor the evolution of damage in CFRP-confined circular concrete-filled steel tubular columns. A fuzzy c-means method was developed to determine the relationship between the AE signal and failure mechanisms. Cluster analysis results indicate that the main AE sources include five types: matrix cracking, debonding, fiber fracture, steel buckling, and concrete crushing. This technology can not only totally separate five types of damage sources, but also make it easier to judge the damage evolution process. Furthermore, typical damage waveforms were analyzed through wavelet analysis based on the cluster results, and the damage modes were determined according to the frequency distribution of AE signals.
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참고문헌 (26)
참고문헌 신청
Aggelis, D. G. / 2011 / Classification of cracking mode in concrete by acoustic emission parameters / Mech. Res. Commun 38(3):153~157
Amir M. / 1999 / Acoustic emission monitoring of hybrid FRP-concrete columns / J. Eng. Mech. -ASCE 125:899~905
Degroot, P. J. / 1995 / Real-time frequency determination of acoustic emission for different fracture mechanisms in carbon epoxy composites / Compos. Sci. Technol 55(4):405~412
Eid, R. / 2008 / Analytical model for FRP-confined circular reinforced concrete columns / J. Compos. Constr 12(5):541~552
Fotouhi, M. / 2011 / Characterization of composite materials damage under quasi-static three-point bending test using wavelet and fuzzy C-means clustering / J. Compos. Mater 110(46):1795~1808
Amir M. / 1999 / Acoustic emission monitoring of hybrid FRP-concrete columns / J. Eng. Mech. -ASCE 125:899~905
Degroot, P. J. / 1995 / Real-time frequency determination of acoustic emission for different fracture mechanisms in carbon epoxy composites / Compos. Sci. Technol 55(4):405~412
Eid, R. / 2008 / Analytical model for FRP-confined circular reinforced concrete columns / J. Compos. Constr 12(5):541~552
Fotouhi, M. / 2011 / Characterization of composite materials damage under quasi-static three-point bending test using wavelet and fuzzy C-means clustering / J. Compos. Mater 110(46):1795~1808
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