Journal of Korean Society of Steel Construction (한국강구조학회 논문집)

Korean Society of Steel Construction (한국강구조학회)
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A Study on Applicability of Wireless Impedance Sensor Nodes Technique for Tensile Force Monitoring of Structural Cables

구조용 케이블의 인장력 모니터링을 위한 무선 임피던스 센서노드 기술의 적용성에 관한 연구

  • Received : 2009.12.16
  • Accepted : 2010.02.10
  • Published : 2010.02.27
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Abstract

In this study, a technique that uses wireless impedance sensor nodes is proposed to monitor tensile force of structural cable. To achieve this goal, the following approaches were implemented. First, a wireless impedance sensor node was designed for automated and cost-efficient prestress-loss monitoring. Second, an impedance-based algorithm was embedded in the wireless impedance sensor node for autonomous structural health monitoring of structural cables. Third, a tensile force monitoring technique that uses an interface plate for structural cables was proposed to overcome the limitations of the wireless impedance sensor node such as its narrow-band measurable frequency ranges. Finally, the applicability of the wireless impedance sensor node and the technique that uses the interface washer were evaluated in a lab-scaled prestressed concrete (PSC) girder model with internal and external tendons for which several prestress-loss scenarios were experimentally monitored with the wireless impedance sensor nodes.

본 연구에서는 구조 케이블의 인장력 모니터링을 위한 무선 임피던스 센서노드를 개발하였다. 이를 위해 다음과 같은 연구가 수행되었다. 첫째, 경제적이고 자동화된 구조 케이블의 인장력 모니터링을 위한 무선임피던스 센서노드를 설계/제작 하였다. 둘째, 자동화된 인장력 모니터링을 위해 임피던스 기반 모니터링 기법을 무선 센서노드에 내장하였다. 셋째, 측정 범위가 제한적인 무선임피던스 센서노드의 한계점을 극복하기 위하여 인터페이스 와셔를 이용하는 구조케이블 인장력 모니터링 기법을 제안하였다. 마지막으로 내장형/외장형 텐던을 가지는 모형 프리스트레스트 콘크리트 거더에 대하여 무선임피던스 센서노드와 인터페이스 와셔를 이용하는 모니터링 기법의 적용성을 평가하였다.

Keywords

References

  1. 김남식, 박동욱, 박용명, 정진환(2007) 역해석기법을 이용한 행어케이블의 장력 추정, 한국지진공학회 논문집, 한국지진공학회, 제11권, 제3호, pp.1-10.
  2. Bhalla, S. and Soh, C.K. (2003) Structural impedance based damage diagnosis by piezo-transducers, Earthquake Engineering and Structural Dynamics, Vol. 32, No. 12, pp.1897-1916. https://doi.org/10.1002/eqe.307
  3. Giurgiutiu, V. and Zagrai, A.N. (2005) Damage detection in thin plates and aerospace structures with electromechanical impedance method, Structural Health Monitoring, Vol. 4, No. 2, pp.99-118. https://doi.org/10.1177/1475921705049752
  4. Inman, D.J. and Grisso, B. (2006) Towards autonomous sensing, Proc. of SPIE's 13th Annual Symposium on Smart Structures and Materials/NDE Conference, San Diego, CA.
  5. Irvine, H.M. (1981) Cable structures, The MIT Press, MA
  6. Kim, B.H. and Park, T. (2007) Estimation of cable tension force using the frequency-based system identification method, Journal of Sound and Vibration, Vol. 304, No. 3-5, pp.660-676. https://doi.org/10.1016/j.jsv.2007.03.012
  7. Kim, J.T., Na, W.B., Hong, D.S., and Park, J.H. (2006) Global and local health monitoring of plate-girder bridges under uncertain temperature conditions, International Journal of Steel Structures, Vol. 6, No. 5, pp.369-376.
  8. Kim, J.T., Park, J.H., Hong, D.S., Cho, H.M. and Na, W.B. (2009) Vibration and impedance monitoring for prestress-loss prediction in PSC girder bridges, Smart Structures and Systems, Vol. 5, No. 1, pp 81-94. https://doi.org/10.12989/sss.2009.5.1.081
  9. Kim, J.T., Yun, C.B., Ryu, Y.S., and Cho, H.M. (2004) Identification of prestress-loss in PSC beams using modal information, Structural Engineering and Mechanics, Vol. 17, No. 3-4, pp.467-482. https://doi.org/10.12989/sem.2004.17.3_4.467
  10. Koo, K.Y. (2008) Structural health monitoring methods for bridges using ambient vibration and impedance measurements, Ph.D. Dissertation, Korea Advanced of Science and Technology, Deajeon.
  11. Liang, C., Sun, F.P., and Rogers, C.A. (1994) Coupled electromechanical analysis of adaptive material systemsdetermination of the actuator power consumption and system energy transfer, Journal of Intelligent Material Systems and Structures, Vol. 5, No. 1, pp.12-20. https://doi.org/10.1177/1045389X9400500102
  12. Lynch, J.P. (2007) A summary review of wireless sensors and sensor networks for structural health monitoring, The Shock and Vibration Digest, Vol. 38, No. 2, pp.91-128.
  13. Mascarenas, D.L., Todd, M.D., Park, G., and Farrar, C.R. (2007) Development of an impedance-based wireless sensor node for structural health monitoring, Smart Material and Structures, Vol. 16. No. 6, pp.2137-2145. https://doi.org/10.1088/0964-1726/16/6/016
  14. Nagayama, T. (2007) Structural health monitoring using smart sensors, Ph.D. Dissertation, University of Illinois at Urbana-Champaign, UC.
  15. Park, S., Ahmad, S., Yun C.B., and Roh, Y. (2006) Multiple crack detection of concrete structures using impedancebased structural health monitoring techniques, Experimental Mechanics, Vol. 46, No. 5, pp.609-618. https://doi.org/10.1007/s11340-006-8734-0
  16. Park, G., Cudney, H., and Inman, D.J. (2000) Impedance-based health monitoring of civil structural components, Journal of Infrastructure Systems, Vol. 6, No. 4, pp.153-160. https://doi.org/10.1061/(ASCE)1076-0342(2000)6:4(153)
  17. Raju, V. (1998) Implementing impedance-based health monitoring technique, Master's Thesis, Virginia Polytechnic Institute and State University, Blacksburg, VA.
  18. Sohn, H., Farrar, C.R., Hunter, N., and Worden, K. (2001) Applying the LANL statistical pattern recognition paradigm for structural health monitoring to data from a surface effect fast patrol boat, Report No. LA-13761-MS, Los Alamos National Laboratory, Las Alamos, NM.
  19. Spencer, B.F., Ruiz-Sandoval, M.E., and Kurata, N. (2004) Smart sensing technology: opportunities and challenges, Structural Control and Health Monitoring, Vol. 11, No. 4, pp.349-368. https://doi.org/10.1002/stc.48
  20. Sun, F.P., Chaudhry, Z., Rogers, C.A. and Majmundar, M. (1995) Automated real-time structure health monitoring via signature pattern recognition, Proc. of SPIE North Americal Conference on Smart Structures and Materials, San Diego, CA.
  21. Triantafyllou, M.S. and Grinfogel, L. (1986) Natural frequencies and modes of inclined cables, Journal of Structural Engineering, Vol. 112, No. 1, pp.139-148. https://doi.org/10.1061/(ASCE)0733-9445(1986)112:1(139)
  22. Yang, Y.W., Hu, Y.H., and Lu, Y. (2008) Sensitivity of PZT impedance sensors for damage detection of concrete structures, Sensors, Vol. 8, No. 1, pp.327-346. https://doi.org/10.3390/s8010327
  23. Zui H., Shinke T., and Namita, Y. (1996) Practical formulas for estimation of cable tension by vibration method, Journal of Structural Engineering, Vol. 122, No. 6, pp.651-656. https://doi.org/10.1061/(ASCE)0733-9445(1996)122:6(651)