Browse > Article
http://dx.doi.org/10.12989/eas.2018.15.5.463

Damage detection of a thin plate using pseudo local flexibility method  

Hsu, Ting Yu (Department of Civil and Construction Engineering, National Taiwan University of Science and Technology)
Liu, Chao Lun (Department of Civil and Construction Engineering, National Taiwan University of Science and Technology)
Publication Information
Earthquakes and Structures / v.15, no.5, 2018 , pp. 463-471 More about this Journal
Abstract
The virtual forces of the original local flexibility method are restricted to inducing stress on the local parts of a structure. To circumvent this restriction, we developed a pseudo local flexibility (PLFM) method that can successfully detect damage to hyperstatic beam structures using fewer modes. For this study, we further developed the PLFM so that it could detect damage in plate structures. We also devised the theoretical background for the PLFM with non-local virtual forces for plate structures, and both the lateral and rotary degree of freedom (DOF) measurements were considered separately. This study investigates the effects of the number of modes, the actual location that sustained damage, multiple damage locations, and noise in modal parameters for the damage detection results obtained from damaged numerical plates. The results revealed that the PLFM can be used for damage detection, localization, and quantification for plate structures, regardless of the use of the lateral DOF and/or rotary DOF.
Keywords
pseudo local flexibility method; rotary DOF; long gauge; plate; damage detection;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Caicedo, J.M. (2003), "Structural health monitoring of flexible civil structures", PhD Thesis, Washington University
2 Cawley, P. and Adam, R.D. (1979), "The location of defects in structures from measurements of natural frequencies", J. Strain Anal., 14(2), 49-57.   DOI
3 Cornwell, P.J., Dobeling, S.W. and Farrar, C.R. (1999), "Application of the strain energy damage detection method to plate-like structures", J. Sound Vib., 224(2), 359-374.   DOI
4 Doebling, S.W., Farrar, C.R., Prime, M.B. and Shevitz, D.W. (1996), "Damage identification and health monitoring of structure and mechanical systems from changes in their vibration characteristics: A literature review", Research Report, No. LA-13070-MS, ESA-EA, Los Alamos National Laboratory, Los Alamos, N.M.
5 Fan, W. and Qiao, P. (2009), "A 2-D continuous wavelet transform of mode shape data for damage detection of plate structures", Int. J. Solid. Struct., 46(25-26), 4379-4395.   DOI
6 Fu, Y.Z., Lu, Z.R. and Liu, J.K. (2013), "Damage identification in plates using finite element model updating in time domain", J. Sound Vib., 332(26), 7018-7032.   DOI
7 Ge, M. and Lui, E.M. (2005), "Structural damage identification using system dynamic properties", Comput. Struct., 83(27), 2185-2196.   DOI
8 Giraldo, D.F. (2006), "A structural health monitoring framework for civil structures", PhD Thesis, Washington University.
9 Hsu, T.Y., Shiao, S.Y. and Liao, W.I. (2015), "A pseudo local flexibility algorithm for vibration-based damage detection of hyperstatic beams", J. Struct. Control Hlth. Monit., 22, 682-693.   DOI
10 Ng, C.T. (2015), "A two-stage approach for quantitative damage imaging in metallic plates using Lamb waves", Earthq. Struct., 8(4), 821-841.   DOI
11 Reynders, E. and De Roeck, G. (2010), "A local flexibility method for vibration-based damage localization and quantification", J. Sound Vib., 329(12), 2367-2383.   DOI
12 Araujo Dos Santos, J.V., Mota Soares, C.M., Soares, C.A. and Maia, N.M.M. (2005), "Structural damage identification in laminated structures using FRF data", Compos. Struct., 67, 239-249.   DOI
13 Bayissa, W.L. and Haritos, N. (2007), "Structural damage identification in plates using spectral strain energy analysis", J. Sound Vib., 307(1), 226-249.   DOI
14 Zhang, Y., Wang, L., Lie, S.T. and Xiang, Z. (2013), "Damage detection in plates structures based on frequency shift surface curvature", J. Sound Vib., 332(25), 6,665-6,684.   DOI
15 Salawu, O.S. (1997), "Detection of structural damage through changes in frequency: A review", Eng. Struct., 19(9), 718-723.   DOI
16 Timoshenko, S. and Woinowsky-Krieger, S. (1959), Theory of plates and shells, McGraw-Hill, New York, NY, USA.
17 Torkzadeh, P., Fathnejat, H. and Ghiasi, R. (2016), "Damage detection of plate-like structures using intelligent surrogate model", Smart Struct. Syst., 18(6), 1233-1250.   DOI