VISAR数据处理方法及在碰撞试验中的应用

VISAR Data Reducing Method and Its Application to Impact Experiment

在VISAR系统测试原理基础上,通过数据处理软件开发,研究了VISAR原始记录信号缺陷的识别与校正,并结合氧化铝陶瓷板碰撞试验进行了对比研究.发现在光强信号处理过程中根据Lissa-jou's图可有效判别和校正原始记录信号中的缺陷.结果表明,开发的数据处理软件可对VISAR数据进行快速、高效处理,得到准确的试件自由面速度历程.

Identification and adjustment on the disfigurements of original data of VISAR are probed by developing software for VISAR data reducing based on measure theory. Then the software is applied to plate impact experiment of ceramics. The disfigurements of light intensity data are identified and adjusted through Lissajou~ figures. The results indicate that VISAR data are reduced quickly and effectively by the software, and the exact free surface velocity history is obtained.