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在固体火箭发动机体数据三维重构的基础上,构建出符合脱黏、气泡和夹渣体数据特征的三维相似变换模板,经三维相似变换后,定位出各类缺陷的体数据场位置,选取缺陷几何中心为缺陷精确定位的标志点,给出了体空间中缺陷几何中心的计算方法.设计制作了预置典型缺陷的模拟固体火箭发动机,测量得到的缺陷几何中心和实际几何中心的距离与最大直径的比值都不大于10%,即测量得到的几何中心与实际几何中心很接近,因此对缺陷几何中心的定位是准确的.
Based on the three-dimensional reconstruction of solid rocket engine body data, a three-dimensional similarity transformation template that is consistent with the data features of debonding, bubble and slag inclusion body is constructed. After three-dimensional similarity transformation, the position of the body data field of various defects is located, The geometric center of the defect is the mark point of the precise positioning of the defect, and the calculation method of the geometric center of the defect in the volume space is given. The simulated solid rocket motor with preset typical defects is designed and manufactured. The measured geometric distance between the geometric center and the actual geometric center The ratio of the maximum diameter is not more than 10%, that is measured geometric center is very close to the actual geometric center, so the positioning of the geometric center of the defect is accurate.