Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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A Study on Optimal Sensor Placement Using Sensitivity Analysis

민감도 해석을 이용한 센서의 최적 위치 선정에 관한 연구

  • Received : 2010.12.30
  • Accepted : 2011.02.11
  • Published : 2011.03.20
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Abstract

Although intensive development continues on innovative sensor systems, there is still considerable uncertainty in deciding on the number of sensors required and their locations in order to obtain adequate information on structural behavior. This paper is concerned with the sensor locations on a beam-structure for prognostic structural health monitoring. The purpose of this study is to investigate how to determine optimal sensor placement(OSP) from the sensitivity information of a known failure mode. The sensitivity of the forced vibration response of a beam to the variation of stiffness due to a crack is calculated analytically and used to determine the optimal sensor locations for the specified failure mode. The results of this method compared with the results of different OSP methods. The results have shown that the proposed method on optimal sensor placement is very effective in structural health monitoring.

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References

  1. Choi, Y. J. and Lee, U. S., 2003, A Study on the Sensor Placement for Structural Damage Detection, Trans. of the KSME(A), Vol. 27, No. 6, pp. 938-945. https://doi.org/10.3795/KSME-A.2003.27.6.938
  2. Patil, D. P. and Maiti, S. K., 2003, Detection of Multiple Cracks Using Frequency Measurements, Engineering Fracture Mechanics, Vol. 70, Issue 12, pp. 1553-1572. https://doi.org/10.1016/S0013-7944(02)00121-2
  3. Son, I. S., Ahn, S. J. and Yoon, H. I., 2009, Study on Detection of Crack and Damage for Cantilever Beams Using Vibration Characteristics, Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 18, No. 12, pp. 1327-1334. https://doi.org/10.5050/KSNVN.2009.19.9.935
  4. Greitfeld, T., 1995, A Method for Identification of a Set of Optimal Points for Experimental Modal Analysis, Proceedings of the 13th International Modal Analysis Conference, Nashville, Tennessee.
  5. Kammer, D. C., 1991, Sensor Placement for On-orbit Modal Identification and Correlation of Large Space Structures, Journal of Guidance, Control and Dynamics, Vol. 14, pp. 189-196.
  6. Meo, M. and Zumpano, G., 2005, On the Optimal Sensor Placement Techniques for a Bridge Structure, Engineering Structures, Vol. 27, Issue 10, pp. 1488-1497. https://doi.org/10.1016/j.engstruct.2005.03.015
  7. Li, Z. N., Tang, J. and Li, Q. S., 2004, Optimal Sensor Locations for Structural Vibration Measurements, Applied Acoustics, Vol. 65, Issue 8, pp. 807-818. https://doi.org/10.1016/j.apacoust.2003.12.007
  8. Worden, K. and Burrows, A. P., 2001, Optimal Sensor Placement for Fault Detection, Engineering Structures, Vol. 23, Issue 8, pp. 885-901. https://doi.org/10.1016/S0141-0296(00)00118-8
  9. Shi, Z. Y., Law, S. S. and Zhang, L. M., 2000, Optimum Sensor Placement for Structural Damage Detection, Journal of Engineering Mechanics, Vol. 126, No. 11, pp. 1173-1179. https://doi.org/10.1061/(ASCE)0733-9399(2000)126:11(1173)
  10. Kwon, K. S. and Kim, C. H., 2007, Sensor Placement Method for Damage Identification, Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 17, No. 4, pp. 324-332. https://doi.org/10.5050/KSNVN.2007.17.4.324
  11. Lin, H. P. and Chang, S. C., 2006, Forced Responses of Cracked Cantilever Beams Subjected to a Concentrated Moving Load, International Journal of Mechanical Sciences, Vol. 48, Issue 12, pp. 1456-1463. https://doi.org/10.1016/j.ijmecsci.2006.06.014
  12. Humar, J. L., 2002, Dynamics of Structures (2nd ed.), A. A. Balkema Publishers, Tokyo.