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现代空间推进系统最易损部件之一是固体火箭发动机。因此,固体火箭发动机的损伤检测是任何一项可靠计划中的一个关键任务。十年前,美国空军就开始使用一种增强型CT医学扫描技术对火箭进行X射线检测。CT检测能提供较详细的图像,能较好地进行定量分析。CT图像分析一般包括检测图像中的裂纹、测量其尺寸和密度分布。但目前的CT图像分析仍不能检测发动机老化的潜在影响。例如,在衬套一推进剂界面,两表面可能是接触的,但不是化学粘合。轻度脱粘这类缺陷通常用超声波
One of the most vulnerable components of modern space propulsion systems is the solid rocket motor. Therefore, the damage detection of solid rocket motors is a key task in any reliable project. Ten years ago, the U.S. Air Force began using an enhanced CT medical scanning technique to conduct X-ray detection of rockets. CT detection can provide more detailed images, can be better quantitative analysis. CT image analysis generally includes detecting cracks in the image, measuring its size and density distribution. However, the current CT image analysis still can not detect the potential impact of engine aging. For example, at the bushing-propellant interface, the two surfaces may be touching, but not chemically bonded. Mild de-bonding defects of this kind are usually made of ultrasound