抄録
Acoustic emission of fiberglass reinforced plastics (FRP) with flaws was examined. One group of FRP used was those exposed to out-door or accelerated weathering and the other was those subjected to falling weight impact tests.
In the case of weathered FRP, AE from these specimens was apparently different from that of the blank one depending on the weathering conditions. This suggests that more detailed tests should be carried out in order to apply AE technique to outdoor FRP structures.
In the case of FRP with flaws due to falling weight impact, a characteristic AE pattern was observed which may be useful to predict the initiation and growth of cracks in FRP with such history of damage.
