Quantitative Structural Health Monitoring by Ultrasonic Guided Waves
Publication: Journal of Engineering Mechanics
Volume 136, Issue 8
Abstract
This paper presents a global-local (GL) method to simulate the interaction of ultrasonic guided waves with structural defects in isotropic and multilayered composite platelike structures. The GL method uses a full finite-element (FE) discretization of the defected region to properly represent wave diffraction phenomena and a suitable set of wave functions to simulate regions away from the joint. Displacement and stress continuity conditions are imposed at the boundary between the global and the local regions. The radiated wave field can be then calculated by using standard techniques (least-squares method). The novelty of the proposed approach over previous GL techniques is the use of semianalytical FE (SAFE) modeling for the “global” simulation. The SAFE method, which only requires the discretization of the waveguide’s cross section, allows handling complex structures (multilayered composites, arbitrary cross sections, etc.) in a computationally efficient manner. Applications of the GL method to damage quantification will be shown for the cases of notches in aluminum plates and delaminationlike defects in aircraft composite panels.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
This project was funded by (U.S.) Air Force Office of Scientific Research Contract No. USAFOSRFA9550-07-1-0016 (Dr. Victor Giurgiutiu and David Stargel, Program Managers) and by the Los Alamos/UCSD Education Collaboration Task 2 “Structural Integrity Monitoring of UAV Composite Wings.” Dr. Ivan Bartoli is acknowledged for preparing Fig. 2.
References
Al-Nassar, Y. N., Datta, S. K., and Shah, A. H. (1991). “Scattering of Lamb waves by a normal rectangular strip weldment.” Ultrasonics, 29, 125–132.
Bartoli, I., Marzani, A., Lanza di Scalea, F., and Viola, E. (2006). “Modeling wave propagation in damped waveguides of arbitrary cross-section.” J. Sound Vib., 295, 685–707.
Chang, Z., and Mal, A. K. (1995). “A global local method for wave propagation across a lap joint.” Numerical Methods in Structural Mechanics ASME, 204, 1–11.
Chang, Z., and Mal, A. K. (1999). “Scattering of Lamb waves from a rivet hole with edge cracks.” Mech. Mater., 31, 197–204.
Goetschel, D. B., Dong, S. B., and Muki, R. (1982). “A global local finite element analysis of axisymmetric scattering of elastic waves.” Trans. ASME, J. Appl. Mech., 49, 816–820.
Hayashi, T., Song, W. J., and Rose, J. L. (2003). “Guided wave dispersion curves for a bar with an arbitrary cross-section: A rod and rail example.” Ultrasonics, 41, 175–183.
Mal, A. K., and Chang, Z. (2000). “A semi-numerical method for elastic wave scattering calculations.” International Journal of Geophysics, 143, 328–334.
Rattanawangcharoen, N., Zhuang, W., Shah, A. H., and Datta, S. K. (1997). “Axisymmetric guided waves in jointed laminated cylinders.” J. Eng. Mech., 123, 1020–1026.
Rose, J. L. (1999). Ultrasonic waves in solid media, Cambridge University Press, Cambridge, 114.
Sabra, K., Srivastava, A., Lanza di Scalea, F., Bartoli, I., Rizzo, P., and Conti, S. (2008). “Structural health monitoring by extraction of coherent guided waves from diffuse fields.” J. Acoust. Soc. Am., 123, EL8–EL13.
Staszewski, W., Boller, C., and Tomlison, G. (2004). Health monitoring of aerospace structures, Wiley, West Sussex, England.
Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 136 • Issue 8 • August 2010
Pages: 937 - 944
Copyright
© 2010 ASCE.
History
Received: Apr 22, 2008
Accepted: Jan 2, 2010
Published online: Jan 6, 2010
Published in print: Aug 2010
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.