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利用工业CT技术检测弹体轴向装药均匀性以及弹壁厚度变化对测量结果的影响,对比了同一模拟装药样件装配在不同壁厚的模拟弹体内时CT相对密度测试结果的差异,并分析了弹壁厚度对装药CT相对密度值的影响。结果表明,对于弹体外径约100mm、内径约90mm的样品,弹壁厚度每增加1mm,同一装填材料的CT值数据随之增加约1%左右。因此,为检测弹体轴向(即上段、中段、下段)装药密度均匀性,在工业CT设备穿透能力范围内,不用测出装药的绝对密度,只需检测上、中、下各个部位的装药CT值,并减除弹壁厚度变化量对CT值产生的影响量,通过比较上、中、下各个部位装药最终的CT值就可获得弹体轴向装药的密度均匀性。
The effects of axial charge uniformity and the change of the thickness of the elastic shell on the measurement results were measured by using industrial CT technology. The difference of relative density test results of the same simulated charge specimens assembled in simulated wall shells with different wall thicknesses was compared. The influence of the thickness of the elastic wall on the relative density of CT was analyzed. The results show that the CT value of the same packing material increases by about 1% for every 1 mm increase in the thickness of the shell for a sample with an outer diameter of about 100 mm and an inner diameter of about 90 mm. Therefore, in order to detect the projectile axial (ie, the upper section, the middle section, the lower section) charge density uniformity in the industrial CT equipment within the scope of penetration, without measuring the absolute density of charge, just to detect the upper, middle and lower CT value of the part of the charge, and minus the amount of change in the thickness of the impact of the CT value of the CT value by comparing the upper, middle and lower parts of the CT value of the final charge can be obtained axial density of the projectile uniform Sex.