On the basis of 3-D reconstruction of the solid rocket motor volume data,the three-dimensional similarity transformation templates compliant with the volume data features of debonding,bubbles and slag inclusion were built.The volume data fields of various defects were located by 3-D similarity transformation.The defect geometric center was selected as the mark point for defect accurate positioning,and the calculation method in volume space of the defect geometric center was given.The simulated solid rocket motor with preset typical defects was designed.Through the experiment,the ratio of the measured distance between the geometric center and the actual geometric center,to the maximum diameter is less than 10%.That's to say,the measured geometric center and the actual geometric center are very close,and the positioning of the geometric center of defects is accurate.
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朱敏,于光辉,卢洪义,李朋.固体火箭发动机体空间缺陷精确定位方法[J].航空动力学报,2013,28(10):2364~2369. ZHU Min, YU Guang-hui, LU Hong-yi, LI Peng. Defect accurate positioning method of solid rocket motor in volume space[J]. Journal Of Aerospace Power,2013,28(10):2364-2369.