拉曼光谱方法实现RDX药柱内部压力的无损检测

发布时间：2018-06-02 00:24

本文选题：黑索金 + 拉曼光谱　；参考：《光谱学与光谱分析》2017年02期

【摘要】：黑索金(RDX)是目前最为常用的军用炸药,随着新型战斗部的发展,异形的RDX药柱不断出现。为保证战斗部的作战效能,需要发展一种能够在线无损检测RDX药柱内部压力的方法。利用拉曼光谱测量表征RDX药柱的方法并结合第一性原理计算,确定了RDX的特征谱线,研究了拉曼特征谱线随外加压强的移动。在实验中分别测量了10,20和30MPa的样片,并通过15,25和35MPa的样片来验证拟合关系的偏差,发现RDX药柱的拉曼特征谱线的移动与外加压强的大小成很好的线性关系。这样就可以先在实验室标定RDX药柱拉曼特征谱线与外压强之间的线性关系,然后测量具有异形的RDX药柱的拉曼谱线,与标准样品的谱线比较得到谱线移动,根据标定得到的线性关系得到异形RDX药柱的内部压强,从而实现对黑索金内压的无损检测。实验表明该方法具有灵敏度高,一致性好的优点,目前该方法已经在某型战斗部的生产上进行试用。
[Abstract]:RDX is the most commonly used military explosive at present. With the development of new warhead, special-shaped RDX explosive column appears constantly. In order to ensure the combat effectiveness of warhead, we need to develop a method of on-line nondestructive detection of internal pressure of RDX charge column. The characteristic spectral lines of RDX were determined by means of Raman spectroscopy and first-principle calculations. The shift of Raman characteristic lines with applied pressure was studied. In the experiment, the samples of 10 ~ (20) and 30MPa were measured, and the deviation of the fitting relationship was verified by the samples of 15 ~ (25) and 35MPa. It was found that the shift of Raman characteristic lines of the RDX column was in good linear relation with the magnitude of the applied pressure. In this way, we can first calibrate the linear relationship between the Raman characteristic line and the external pressure of the RDX powder column in the laboratory, then measure the Raman spectrum line of the RDX powder column with special shape, and compare the Raman spectrum line with the standard sample line to get the line shift. According to the calibration linear relationship, the internal pressure of the special-shaped RDX powder column is obtained, thus the non-destructive testing of the internal pressure of Heisoujin is realized. Experiments show that this method has the advantages of high sensitivity and good consistency.
【作者单位】：湘潭大学物理与光电工程学院;国防科技大学理学院;
【基金】：国家自然科学基金面上项目(11274265)资助
【分类号】：O657.37;TQ560.72

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