Affiliations: Dynamics Research Group, Department of Mechanical
Engineering, University of Sheffield, Sheffield, UK
Note: [] Corresponding author: K. Worden, Dynamics Research Group,
Department of Mechanical Engineering, University of Sheffield, Mappin Street,
Sheffield S1 3JD, United Kingdom. E-mail: [email protected]
Abstract: The paper demonstrates the application of guided ultrasonic waves
for estimating material elastic properties in multi-layered composite plates.
Two-dimensional Lamb wave propagation is modelled using the Local Interaction
Simulation Approach (LISA). The wave responses are then used to estimate
relevant material properties. This numerical inverse method is based on an
optimisation scheme using a Differential Evolution (DE) algorithm. The method
is demonstrated on a simulated seven-layered glass fibre-epoxy composite plate.
The results show a good agreement between the exact and reconstructed material
properties.
