Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : October 08, 2016 - October 10, 2016
The influence of stacking sequence on the generation characteristics of ultrasonic band gap of carbon fiber-reinforced composite laminates is investigated theoretically. The energy transmission spectrum of unidirectional, cross-ply, and quasi-isotropic laminates with spring-type interlayer interfaces immersed in water is calculated by using the stiffness-matrix method. The location of the band gaps in which the transmissivity becomes relatively small in the spectrum is found to be significantly influenced by the laminate lay-up and the angle of incidence. The energy transmission spectrum is experimentally measured by the immersion through-transmission technique. The band gap formation observed in the experimental results is shown to be favorably compared with the theory.
