Transactions of Nanjing University of Aeronautics & Astronautics
Simulation Method of Piezoelectric Guided Wave Propagation in Multi-layer Riveted Structures
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Abstract:
Multi-layer riveted structures are widely applied to aircraft. During the service， cracks may appear within these structures due to stress concentration of the riveted holes. The guided wave monitoring has been proved to be an effective tool to deal with this problem. However， there is a lack of understanding of the wave propagation process across such kinds of structures. This study proposes a piezoelectric guided wave simulation method to reveal the propagation of guided waves in multi-layer riveted structures. Effects of pretension force， friction coefficient， and cracks that might influence wave characteristics are studied. The guided wave simulation data is compared with the experimental results and the results verify the simulation model. Then the guided wave propagation in a more complex long-beam butt joint structure is further simulated.
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TB553
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