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
- 저널정보
- 국제구조공학회 Structural Engineering and Mechanics, An Int'l Journal Structural Engineering and Mechanics, An Int'l Journal Vol.69 No.4
- 발행연도
- 2019.1
- 수록면
- 407 - 416 (10page)
이용수
초록· 키워드
오류제보하기
This paper develops a wireless sensor for online fatigue crack detection and failure warning based on crack-induced nonlinear ultrasonic modulation. The wireless sensor consists of packaged piezoelectric (PZT) module, an excitation/sensing module, a data acquisition/processing module, a wireless communication module, and a power supply module. The packaged PZT and the excitation/sensing module generate ultrasonic waves on a structure and capture the response. Based on nonlinear ultrasonic modulation created by a crack, the data acquisition/processing module periodically performs fatigue crack diagnosis and provides failure warning if a component failure is imminent. The outcomes are transmitted to a base through the wireless communication module where two-levels duty cycling media access control (MAC) is implemented. The uniqueness of the paper lies in that 1) the proposed wireless sensor is developed specifically for online fatigue crack detection and failure warning, 2) failure warning as well as crack diagnosis are provided based on crack-induced nonlinear ultrasonic modulation, 3) event-driven operation of the sensor, considering rare extreme events such as earthquakes, is made possible with a power minimization strategy, and 4) the applicability of the wireless sensor to steel welded members is examined through field and laboratory tests. A fatigue crack on a steel welded specimen was successfully detected when the overall width of the crack was around 30 μm, and a failure warnings were provided when about 97.6% of the remaining useful fatigue lives were reached. Four wireless sensors were deployed on Yeongjong Grand Bridge in Souht Korea. The wireless sensor consumed 282.95 J for 3 weeks, and the processed results on the sensor were transmitted up to 20 m with over 90% success rate.
목차
등록된 정보가 없습니다.
참고문헌 (53)
참고문헌 신청
Amura, M / 2012 / Prediction of residual fatigue life using nonlinear ultrasound / Smart Mater. Struct 21(4):045001
Caizzone, S. / 2014 / Wireless crack monitoring by stationary phase measurements from coupled RFID tags / IEEE Trans. Antenn. Propagat 62(12):6412~6419
Cantrell, J. H. / 2001 / Nonlinear ultrasonic characterization of fatigue microstructures / Int. J. Fatig 23:487~490
Tommy H. T. Chan / 2004 / Evaluation of typhoon induced fatigue damage using health monitoring data for the Tsing Ma Bridge / Structural Engineering and Mechanics, An Int＇l Journal 17(5):655~670
Chen, H. L. R. / 2006 / Fatigue crack growth and remaining life estimation of AVLB components / Struct. Eng. Mech 23(6):651~674
Caizzone, S. / 2014 / Wireless crack monitoring by stationary phase measurements from coupled RFID tags / IEEE Trans. Antenn. Propagat 62(12):6412~6419
Cantrell, J. H. / 2001 / Nonlinear ultrasonic characterization of fatigue microstructures / Int. J. Fatig 23:487~490
Tommy H. T. Chan / 2004 / Evaluation of typhoon induced fatigue damage using health monitoring data for the Tsing Ma Bridge / Structural Engineering and Mechanics, An Int＇l Journal 17(5):655~670
Chen, H. L. R. / 2006 / Fatigue crack growth and remaining life estimation of AVLB components / Struct. Eng. Mech 23(6):651~674
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