摘要
利用37mm火炮加载装置,在平板撞击下,以含预制内部缺陷的K9玻璃作为实验样品,采用具有高空间-时间分辨率的阵列式多普勒探针测量技术(空间和时间分辨率分别为127μm和50pm),测到了样品后界面不同位置的粒子速度。简略分析了材料内部缺陷对样品自由面粒子速度信号的影响,探索了从细-微观尺度研究材料动态力学性能的实验方法。
Study on the dynamic property of materials under impact loading depends closely on the progress of experimental testing techniques. The power gun with a 37-mm-diameter chamber was used as the loading equipment, and K9 glass with internal preexisted defects was chosen as the sample. Under plate impacting conditions, Doppler pins system （DPS） testing technique, whose space and time reso-lutions were 127μm and 50 ps respectively, was adopted to measure the velocity history of free surfaces located in different places on sample＇s free surface. Influence of internal preexisted defects on the velocity signal of sample＇ s free surface was analyzed in brief, and the experimental method to study materials＇ dynamic property from the point of meso-microcosmic view was also discussed.
出处
《爆炸与冲击》
EI
CAS
CSCD
北大核心
2010年第1期105-108,共4页
Explosion and Shock Waves
基金
国家自然科学基金项目(10802080)
中国工程物理研究院基金项目(2007B01003)~~
