力学学报 ›› 2011, Vol. 43 ›› Issue (6): 1125-1132.doi: 10.6052/0459-1879-2011-6-lxxb2010-629

• 研究论文 • 上一篇    下一篇

预制缺陷的K9玻璃层裂特性研究

胡昌明,王翔,刘仓理,蔡灵仓   

  1. 中国工程物理研究院流体物理研究所, 冲击波物理与爆轰物理重点实验室
  • 收稿日期:2010-09-17 修回日期:2011-07-07 出版日期:2011-11-25 发布日期:2011-12-08
  • 通讯作者: 胡昌明 E-mail:cmhu@caep.ac.cn

Spallation characteristics of K9 glass with prefabricated defects

Changming Hu,Xiang Wang,Cangli Liu,Lingcang Cai   

  1. Key Laboratory of Shock Wave Physics and Detonation Physics, Institute of Fluid Physics, China Acadamy of Engineering Physics, Mianyang 621900, China
  • Received:2010-09-17 Revised:2011-07-07 Online:2011-11-25 Published:2011-12-08
  • Contact: Changming Hu E-mail:cmhu@caep.ac.cn

摘要: 层裂问题的核心内容是内部微细观损伤成核及演化规律研究. 利用激光内刻 方法, 在K9玻璃样品内部预制相互贯通的初始损伤, 结合火炮加载平板实验和多点DPS测试 获得样品自由面粒子速度, 以研究材料内部损伤的动态实时演化过程. 通过所获得的样品自 由面粒子速度图像, 分析了层裂振荡周期、未层裂信号和层裂强度等实验现象, 为材料的动 态损伤演化过程提供了一些新的认识.

关键词: 预制缺陷

Abstract: The kernel issue of spallation is the nucleation and dynamic evolution process of meso-micro damages inside materials. Using laser etching method, some initial inter-connected damages were prefabricated inside K9 glass. Combining with power gun loaded plate tests and multi-point Doppler pin system (DPS) measurements, the free surface velocity profiles of the sample were obtained, and the dynamic real-time evolution of internal damages inside materials was studied. From obtained free surface velocity profiles, some experimental phenomena were analyzed, including spallation oscillation time, unspalled signal, spallation strength, and so on. These results can provide some novel information for dynamic damage evolution process of materials.

Key words: prefabricated defects

中图分类号: 

  • O346.5