Vibration-based identification of interphase properties in long fiber reinforced composites

The interphase properties of fiber-reinforced composite materials affect significantly the dynamic behavior of the material, and hence they have to be accounted for accurately. However, the small thickness of the interphase makes it hard to measure precisely its properties directly. In this paper, a new approach is proposed to determine the properties of the interphase by using the vibratory response of coupons made of the composite material. A...