Composite materials are used in many advanced engineering applications because of their high specific strength and specific stiffness. However, the complex damage mechanisms and failure modes are still not well-understood and limit their wide-spread applications. It is critical to monitor the structural heath for improved understanding of damage evolution and accurate life estimation. Ultrasonic wave based structure health monitoring (SHM) technique is a promising approach and has been investigated by many researchers. However, for the techniques to be reliable, it is necessary to understand the wave propagation behavior in composites. A fully coupled numerical simulation model has been developed to understand wave propagation and dissipation in composites under different excitation frequencies. The model is based on the local interaction simulation approaches/sharp interface model (LISA/SIM), and is computationally efficient compared to traditional finite element methods. This model is used to emulate wave behavior in composites in the current work. The output sensor signals are processed using matching pursuit decomposition algorithm to study the zero-order anti-symmetric and symmetric Lamb wave modes, including attenuation effects and dispersion. The results show good agreement with published experiments. Sensitivity studies show that wave velocities and amplitudes vary significantly with changes in the material properties and stiffness.
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ASME 2016 International Mechanical Engineering Congress and Exposition
November 11–17, 2016
Phoenix, Arizona, USA
Conference Sponsors:
- ASME
ISBN:
978-0-7918-5063-3
PROCEEDINGS PAPER
Fully Coupled Numerical Simulation for Wave Propagation in Composite Materials Available to Purchase
Rajesh Kumar Neerukatti,
Rajesh Kumar Neerukatti
Arizona State University, Tempe, AZ
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Aditi Chattopadhyay
Aditi Chattopadhyay
Arizona State University, Tempe, AZ
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Guoyi Li
Arizona State University, Tempe, AZ
Rajesh Kumar Neerukatti
Arizona State University, Tempe, AZ
Aditi Chattopadhyay
Arizona State University, Tempe, AZ
Paper No:
IMECE2016-66159, V009T17A006; 10 pages
Published Online:
February 8, 2017
Citation
Li, G, Neerukatti, RK, & Chattopadhyay, A. "Fully Coupled Numerical Simulation for Wave Propagation in Composite Materials." Proceedings of the ASME 2016 International Mechanical Engineering Congress and Exposition. Volume 9: Mechanics of Solids, Structures and Fluids; NDE, Diagnosis, and Prognosis. Phoenix, Arizona, USA. November 11–17, 2016. V009T17A006. ASME. https://doi.org/10.1115/IMECE2016-66159
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