Abstract
In this paper, the characteristics of supersonic wave in unidirectional CFRP composites were investigated. The ultrasonic velocity and attenuation coefficient of the unidirectional composites were measured under loading. Then based on the acousttoelasticity effect, the anisotropic behavior of the materials could be made clear. It was shown there were good relationships between stresses and wave velocity, stress and attenuation coefficient. This shows that the possibility of the acoustoelasticity effect to be applied in the composites fields.
