Ultrasonic back-wall echo monitoring and detection of continuous SiC fiber titanium matrix composites parts

Aiming at the preparation process characteristics of continuous SiC fiber reinforced titanium matrix composites (TMCs), the possible defects and ultrasonic detection difficulties of TMCs parts were analyzed. The back-wall echo monitoring result of hole defect of TMCs bling fiber/titanium bonding interface was simulated, combined with the result of defect detection and anatomy corresponding for specific size of TMCs bling, the characteristics of hole of back-wall echo monitoring in TMCs bling fiber/titanium bonding interface was analyzed, verified that the back-wall echo monitoring can be used to recognition signal of defect in ultrasonic inspection of the interfacial of TMCs bling fiber/titanium bonding interface, which provides technical support for ultrasonic detection of internal quality of TMCs parts.