Damage Detection for Space Truss Structures Based on Strain Mode under Ambient Excitation
Publication: Journal of Engineering Mechanics
Volume 138, Issue 10
Abstract
Safety assurance and detection of potential damage for space truss structures have been challenging topics. The two most critical problems are considered in this paper. One is to develop an effective damage detection method based on strain data under ambient excitation, and the other is then to optimize the installment of strain sensors owing to numerous structural members in the space truss structures. A method of damage detection for space truss structures, called the environmental excitation incomplete strain mode (EEISM) method, is proposed. Four steps are taken in the EEISM method. First, strain mode parameter identification is carried out based on the cross-correlation function of the strain responses through a combination of the empirical mode decomposition method and the peak amplitude series method. Second, the strain sensors are located optimally in the space truss structures through sensitive analysis of the strain mode perturbation matrix, which are obtained by perturbation theory. Third, the modal assurance criterion (MAC) value is applied to locate the damages; that is, the members with the larger MAC values are defined as the damaged members. Finally, a damage index obtained by solving the perturbation equation is used for damage quantification. Numerical analysis of a long-span space truss structure including damage location and quantification for single-member and multimember damages, detection of the various severities of damage, and the effect of the number of sensors is performed to verify the effectiveness of the proposed EEISM method. It is shown from the analysis results that the EEISM method is effective in the location and quantification of damages for single-member and multimember damages. The quantity of the strain sensors has an effect on the damage location and has no remarkable effect on the damage quantification for the determined damage members.
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Acknowledgments
This research was supported by the Momentous Research Plan in the National Natural Science Foundation of China (90915004), Key Projects in the National Science & Technology Brace Program of China (2011BAK02B03), and the 333 High-level Talent Project in Jiangsu Province, which the writers gratefully acknowledge.
References
Chen, J. C., and Garbat, J. A. (1980). “Analytical model improvement using modal test results.” AIAA J., 18(6), 684–690.
Chen, S.-H., Liu, Z.-S., Shao, C.-S., and Zhao, Y.-Q. (1993). “Perturbation analysis of vibration modes with close frequencies.” Int. J. Numer. Methods Eng., 9(5), 427–438.
Clough, R. W., and Penzien, J. (1993). Dynamics of structures, McGraw-Hill, New York.
Gonçalves, M. H., Cabral, M. S., Ruiz de Villa, M. C., Escrich, E., and Solanas, M. (2007). “Likelihood approach for count data in longitudinal experiments.” Comput. Stat. Data Anal., 51(12), 6511–6520.
Halvorsen, W. G., and Brown, D. L. (1977). “Impulse technique for structural frequency response testing.” Sound Vib., 11(11), 8–21.
Huang, N. E., et al. (1998). “The empirical mode decomposition and the Hilbert spectrum for nonlinear and non-stationary time series analysis.” Proc. R. Soc. London Ser. A, 454, 903–995.
Imamovic, N., and Ewins, D. J. (1997). “Optimization of excitation DOF selection for modal tests.” Proc., 15th Int. Modal Analysis Conf., SEM, Orlando, FL, 1945–1951.
James, G. H. III, Carne, T. G., and Lauffer, J. P. (1995). “The natural excitation technique (NExT) for modal parameter extraction from operating structures.” Int. J. Anal. Exp. Modal Anal., 10(4), 260–277.
Jones, I. S. (2005). “Impulse response model of thermal striping for hollow cylindrical geometries.” Theor. Appl. Fract. Mech., 43(1), 77–88.
Kaouk, M., Zimmerman, D. C., and Simmermacher, T. W. (2000). “Assessment of damage affecting all structural properties using experimental modal parameters.” Trans. ASME, J. Vib. Acoust., 122(4), 456–462.
Kim, H. M., and Membertkowicz, T. J. (2001). “An experimental study for damage detection using a hexagonal truss.” Comput. Struct., 79(2), 173–182.
Lam, H. F., Ko, J. M., and Wong, C. W. (1998). “Localization of damaged structural connections based on experimental modal and sensitive analysis.” J. Sound Vib., 210(1), 91–115.
Li, Z. F., Hua, H. X., Shi, Y., Chen, Z. Y. (2001). “On line modal parameter identification technique.” Proc., 19th Int. Modal Analysis Conf., SEM, Kissimmee, FL, 1518–1523.
Pandey, A. K., Biswas, M., and Samman, M. M. (1991). “Damage detection from changes in curvature mode shapes.” J. Sound Vib., 145(2), 321–332.
Ting, T., Chen, T. L. C., and Twomey, W. (1993). “Correlating mode shapes based on the modal assurance criterion.” Finite Elem. Anal. Design, 14(4), 353–360.
Tsang, W. F. (1990). “Use of dynamic strain measurement for the modeling of structures.” Proc., 8th Int. Modal Analysis Conf., SEM, Kissimmee, FL, 1246–1251.
Unger, J. F., Teughels, A., and De, R. G. (2005). “Damage detection of a prestressed concrete beam using modal strains.” J. Struct. Eng., 131(9), 1456–1463.
Yam, L. H., Leung, T. P., Li, D. B., and Xue, K. Z. (1996). “Theoretical and experimental study of modal strain analysis.” J. Sound Vib., 191(2), 251–260.
Yao, G. C., Chang, K. C., and Lee, G. C. (1992). “Damage diagnosis of steel frames using vibrational signature analysis.” J. Eng. Mech., 118(9), 1949–1961.
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Published In
Journal of Engineering Mechanics
Volume 138 • Issue 10 • October 2012
Pages: 1215 - 1223
Copyright
© 2012 American Society of Civil Engineers.
History
Received: Jun 9, 2009
Accepted: Feb 23, 2012
Published online: Sep 14, 2012
Published in print: Oct 1, 2012
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