An integrated numerical model for investigating guided waves in impact-damaged composite laminates

摘要: Abstract This paper presents a novel numerical technique that combines predictions of impact-induced damage and subsequent ultrasonic guided-wave propagation in composite laminates, with emphasis on the development verification modelling framework. Delamination matrix cracking are considered technique, which is validated by experimental measurements carbon-fibre/epoxy plate using drop-weight impact tower scanning laser vibrometer. Good agreement has been found between simulations experiments regarding response global-local wavefields. Effects these two modes, extent multiple impacts guided waves studied tool. Matrix leads to lower wavefield scattering compared delamination, particularly un-damaged regions. The strategy can provide valuable guidelines for optimising health-monitoring arrangements structures susceptible impacts, model also be integrated other models predicting internal flaws laminates.