含热塑性纱线的RTM成型工艺复合材料的超声检测

Ultrasonic detection of RTM forming process composites which containing thermoplastic yarn

对一种含热塑性纱线的复合材料树脂传递模塑(RTM)工艺成型层压板进行A扫描和C扫描检测,结合金相检验结果,分析其与不含热塑性材料的RTM工艺成型层压板的超声检测结果差异。建立了适用于含有该种材料的碳纤维复合材料的超声检测方法和特征缺陷判定方法。结果表明,接触式超声反射法能有效、直观地检测该种层压板的内部质量,且与金相检验结果相符合。

Ultrasonic A-scan and C-scan testing combined with metallographic detection was carried out for a composite material containing thermoplastic yarn layer board which was manufactured by resin transfer molding(RTM) process.The difference of ultrasonic testing results between RTM forming process layer board with or without thermoplastic materials was analyzed.The aim of the research is to establish ultrasonic detection method and characteristics of carbon fiber composite material defect judgment method suitable for this kind of material.The result shows that the contact ultrasonic reflection method can effectively and directly reflect the internal quality of the layer board,and it is consistent with the metallographic detecting results.