为了能够准确检测出火箭弹壳体内部缺陷和表面划痕缺陷,针对壳体自身形状的结构特点,采用水浸式的超声检测方法,对于弹体的不同部位采用不同的检测方法进行检测。通过提取壳体各部位的缺陷特征回波信号对其进行了C扫描,获得了工件缺陷图像。检测结果表明该方法可以对工件进行无盲区无遗漏的检测且缺陷位置准确,为具有此类结构火箭弹壳体的缺陷检测提供了一种有效的检测手段。

According to the structure characteristics of rocket case's shape, the ultrasonic immersion testing method was adopted to detect the internal and surface flaws accurately. Different methods were used in detecting different part of rocket body. By extracting the work piece's effective echo signals, and then adopting the ultrasonic C-scan imaging technique, the flaw's image of rocket case was obtained. Test results show that the method could detect the work piece without blind spot or omission and make the defected position be accurate. Thus, it could offer an effective testing method to defect the flaw of the rocket case with a kind of structure.