Application of laser ultrasonics to monitor material degradaion in FRP composites

摘要

The use of thick fiber reinforced polymeric (FRP) composites in civil engineering applications has introduced the need for methodologies that can monitor the deterioration of an FRP component's material properties due to service loads and environmental conditions. Currently, there is no nondestructive methodology that can quantitatively track changes in material properties (within a control volume) as a function of accumulated damage. This deficiency is one impediment to the development of a quantitative understanding of deterioration in thick FRP components.