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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2016.4
- 수록면
- 3 - 10 (8page)
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초록· 키워드
오류제보하기
A crack identification method using the change of natural frequencies for tapered cantilever pipe-type cracked beam is presented. Modal properties of tapered cantilever intact beam with a tip mass are identified by applying the boundary conditions to a general solution. An equivalent bending stiffness for cracked beam based on an energy method is used to identify natural frequencies of tapered cantilever thin-walled pipe with a tip mass, which has a through-the-thickness crack, subjected to bending. The identified natural frequencies of the cracked beam are used in constructing training patterns of neural networks. Then crack location and size are identified using a committee of the neural networks. Crack detection was carried out for an example tapered beam using the proposed method, and the identified crack locations and sizes agree reasonably well with the exact values.
목차
Abstract
1. 서론
2. 말단질량을 갖는 테이퍼 캔틸레버 보의 모드특성
3. 원형강관 균열보의 등가휨강성 및 고유주파수
4. 균열위치 및 균열크기 추정
5. 결론
REFERENCES
참고문헌 (16)
참고문헌 신청
Auciello, N. M., & Nole, G. (1998). Vibrations of a cantilever tapered beam with varying section properties and carrying a mass at the free end, Journal of Sound and Vibration, 214, 105~119.
Chen, D. W., & Wu, J .S. (2002). The exact solutions for the natural frequencies and mode shapes of non-uniform beams with multiple spring-mass systems, Journal of Sound and Vibration, 255, 299~322.
Chen, Y. Z. (2000). Target function method for evaluating natural vibration frequency of bending beam with adhesive mass, Communications in Numerical Methods in Engineering, 16, 343~355.
Dilena, M., Dell’Oste, M. F., & Morassi, A. (2011). Detecting cracks in pipes filled with fluid from changes in natural frequencies, Mechanical Systems and Signal Processing, 25, 3186~3197.
Ece, M. C., Aydogdu, M., & Taskin, V. (2007). Vibration of a variable cross-section beam, Mechanics Research Communications, 34, 78~84.
Chen, D. W., & Wu, J .S. (2002). The exact solutions for the natural frequencies and mode shapes of non-uniform beams with multiple spring-mass systems, Journal of Sound and Vibration, 255, 299~322.
Chen, Y. Z. (2000). Target function method for evaluating natural vibration frequency of bending beam with adhesive mass, Communications in Numerical Methods in Engineering, 16, 343~355.
Dilena, M., Dell’Oste, M. F., & Morassi, A. (2011). Detecting cracks in pipes filled with fluid from changes in natural frequencies, Mechanical Systems and Signal Processing, 25, 3186~3197.
Ece, M. C., Aydogdu, M., & Taskin, V. (2007). Vibration of a variable cross-section beam, Mechanics Research Communications, 34, 78~84.
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UCI(KEPA) : I410-ECN-0101-2016-540-002774129