本文采用光测法,对含有预制脱粘、气泡及内部裂纹等包覆缺陷的药柱做空白试验,并检测了实际产品.通过有限元法,得出在检测的包覆层材质及压差固定时,激光全息法所能检测出的最小缺陷半径及其深度的关系曲线.本文平行采用散斑法,对无损检测固体推进剂包覆质量有一定参考价值. In this paper, a blank test was carried out on the pellet containing defects such as prefabricated debonding, bubbles and internal cracks, and the actual products were tested by the light method.The finite element method was used to obtain the material and pressure drop Fixed, laser holographic method can detect the minimum defect radius and its depth curve.The parallel method using the speckle method for nondestructive testing solid propellant coating quality has some reference value.