Smart Structures and Systems

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

Damage detection for truss or frame structures using an axial strain flexibility

  • Yan, Guirong (School of Civil Engineering, Harbin Institute of Technology) ;
  • Duan, Zhongdong (School of Civil Engineering, Harbin Institute of Technology) ;
  • Ou, Jinping (School of Civil Engineering, Harbin Institute of Technology)
  • Received : 2008.04.02
  • Accepted : 2008.11.25
  • Published : 2009.05.25
⟨ Previous Next ⟩

Abstract

Damage detection using structural classical deflection flexibility has received considerable attention due to the unique features of the flexibility in the last two decades. However, for relatively complex structures, most methods based on classical deflection flexibility fail to locate damage sites to the exact members. In this study, for structures whose members are dominated by axial forces, such as truss structures, a more feasible flexibility for damage detection is proposed, which is called the Axial Strain (AS) flexibility. It is synthesized from measured modal frequencies and axial strain mode shapes which are expressed in terms of translational mode shapes. A damage indicator based on AS flexibility is proposed. In addition, how to integrate the AS flexibility into the Damage Location Vector (DLV) approach (Bernal and Gunes 2004) to improve its performance of damage localization is presented. The methods based on AS flexbility localize multiple damages to the exact members and they are suitable for the cases where the baseline data of the intact structure is not available. The proposed methods are demonstrated by numerical simulations of a 14-bay planar truss and a five-story steel frame and experiments on a five-story steel frame.

Keywords

Acknowledgement

Supported by : National Natural Science Foun dation of China

References

  1. Bernal, D. and Gunes, B. (2002), "Damage localization in output-only systems: a flexibility based approach", Proc. of IMAC-XX.
  2. Bernal, D. and Gunes, B. (2004), "Flexibility based approach for damage characterization: benchmark application", J. Eng. Mech., 130(1), 61-70. https://doi.org/10.1061/(ASCE)0733-9399(2004)130:1(61)
  3. Doebling, S.W. and Farrar, C.R. (1996), "Computation of structural flexibility for bridge health monitoring using ambient modal data", Proc. of 11th ASCE Engineering Mechanics Conf.
  4. Doebling, S.W. and Peterson, L.D. (1997), "Computing statically complete flexibility from dynamically measured flexibility", J. Sound Vib., 205(5), 631-645. https://doi.org/10.1006/jsvi.1997.1050
  5. Doebling, S.W., Peterson, L.D. and Alvin, K.F. (1996), "Estimation of reciprocal residual flexibility from experimental modal data", AIAA J., 34(8), 1678-1685. https://doi.org/10.2514/3.13289
  6. Doebling, S.W., Peterson, L.D., Alvin, K.F. (1998), "Experimental determination of local structural stiffness by disassembly of measured flexibility matrices", J. Vib. Acoust., 120, 949-957. https://doi.org/10.1115/1.2893925
  7. Duan, Z.D., Yan, G.R. and Ou, J.P. (2005), "Structural damage detection using the angle-between-string-andhorizon flexibility", Proc. of the 2nd Int. Conf. on Structural Health Monitoring and Intelligent Infrastructure, Shenzhen, China, November.
  8. Duan, Z.D., Yan, G.R., Ou, J.P. and Spencer, B.F. (2005), "Damage localization in ambient vibration by constructing proportional flexibility matrix", J. Sound Vib., 284(1-2), 455-466. https://doi.org/10.1016/j.jsv.2004.06.046
  9. Gao, Y. and Spencer, B.F. (2002), "Damage localization under ambient vibration using changes in flexibility", J. Earthq. Eng., 1(1), 136-144.
  10. Long, Y. and Bao, S. (1996), Structural mechanics, Higher education publishing company.
  11. Pandey, A.K., Biswas, M. (1994), "Damage detection in structures using changes in flexibility", J. Sound Vib., 169(1), 3-17. https://doi.org/10.1006/jsvi.1994.1002
  12. Pandey, A.K., Biswas, M. (1995), "Experimental verification of flexibility difference method for locating damage in structures", J. Sound Vib., 184(2), 311-328. https://doi.org/10.1006/jsvi.1995.0319
  13. Park, K.C. and Felippa, C.A. (1998), "A variational framework for solution method developments in structural mechanics", J. Appl. Mech., 65(1), 242-249. https://doi.org/10.1115/1.2789032
  14. Park, K.C., Reich, G.W. and Alvin, K.F. (1997), Damage detection using localized flexibilities, structural health monitoring, current status and perspectives, F.K. Chang, Technomic Publishers.
  15. Reich, G.W. and Park, K.C. (2000), "Experimental application of a structural health monitoring methodology", Proc. of SPIE, In Smart Structures and Materials.
  16. Sim, S.H. and Spencer, Jr. B.F. (2007), "Multi-scale sensing for structural health monitoring", World Forum on Smart Materials and Smart Structures Technology.

Cited by

  1. Damage detection on a full-scale highway sign structure with a distributed wireless sensor network vol.16, pp.1, 2015, https://doi.org/10.12989/sss.2015.16.1.223
  2. Overall damage identification of flag-shaped hysteresis systems under seismic excitation vol.16, pp.1, 2015, https://doi.org/10.12989/sss.2015.16.1.163
  3. A generalized flexibility matrix-based model updating method for damage detection of plane truss and frame structures vol.8, pp.2, 2018, https://doi.org/10.1007/s13349-018-0276-5
  4. Experimental validation of a multi-level damage localization technique with distributed computation vol.6, pp.5, 2009, https://doi.org/10.12989/sss.2010.6.5_6.561