RTM成形における超音波樹脂含浸モニタリング結果と成形品機械特性との関係

抄録

In Resin Transfer Molding (RTM), the impregnation state of the fiber bundles significantly affects the quality of the molded product. Therefore, several methods have been proposed for monitoring the resin impregnation process. Our previous research demonstrated that real-time monitoring of the resin impregnation state is possible using ultrasonic techniques. In this study, we investigated the relationship between ultrasonic monitoring results and the mechanical properties of the molded products. A correlation was found between the ultrasonic monitoring results and the visual quality of the molded products. However, the mechanical properties of the molded products obtained from static tensile tests did not clearly correspond to the results of ultrasonic resin impregnation monitoring. As a results, ultrasonic monitoring can be used to evaluate the molded products with relatively good impregnation state where mechanical properties do not show significant variation in static tests.