Flash X-Ray Radiography for Diagnosing the Ejecta from Shocked Metal Surface
-
摘要: 脉冲X光照相是诊断强冲击载荷下金属材料微物质喷射的重要方法,金属材料的表面结构对微物质喷射的影响一直是数值模拟和实验研究主要方向。为此组建了由商用脉冲X光机、X光照相接收系统和时序控制同步系统组成的测试系统,研究了真空条件下和0.1 MPa下锡样品表面不同刻槽深度对微物质喷射量的影响。动态实验结果表明,真空条件下锡样品刻槽类微物质喷射具有前端密度小、后端密度大的特点,微物质喷射量和区域宽度随刻槽深度的增加而增加,而在0.1 MPa下微物质喷射出现前端慢化和喷射区域明显变狭窄的物理图像。Abstract: The flash X-ray radiography is an important diagnostic tool for the ejecta from shocked metal surface. The influence of metal surface characteristics on the ejecta is a main aspect of numerical simulations and experiments on ejecta phenomena from shocked metal surface. A commercial flash X-ray tube, an X-ray camera and high accuracy synchronization timing system were used to establish a system of ejecta diagnosis. The radiographs of ejecta from the tin targets with different depths of grooves were captured and analyzed. The experimental results showed that (1) the mass ejection of tin targets with grooves presented the quasi-multilayer in vacuum; (2) the zone width and ejecta mass increased with the depth of target grooves in vacuum; (3) the region width and ejecta mass decreased as in gas pressure of 0.1 MPa.
-
Key words:
- microjet /
- ejecta /
- flash X-ray radiography /
- grooves characteristics
-
Wang P, Qin C S, Zhang S D, et al. Simulated microjet from free surface of aluminum using smoothed particle hydrodynamics [J]. Chinese Journal of High Pressure Physics, 2004, 18(2): 149-156. (in Chinese) 王裴, 秦承森, 张树道, 等. SPH方法对金属表面微射流的数值模拟 [J]. 高压物理学报, 2004, 18(2): 149-156. Sorenson D S, Minich R W, RomeroJ L, et al. Ejecta particle size distribution for shock loaded Sn and Al metals [J]. J Appl Phys, 2002, 92(10): 5830-5836. Zellner M B, Vogan McNeil W, Gray G T Ⅲ, et al. Surface preparation methods to enhance dynamic surface property measurements of shocked metal surfaces [J]. J Appl Phys, 2008, 103(8): 083521. Zellner M B, Grover M, Hammerberg J E, et al. Effects of shock-breakout pressure on ejection of micron-scale material from shocked tin surfaces [J]. J Appl Phys, 2007, 102(1): 013522. Mcmillan C, Whispky R. Holographic measurement of ejecta from shocked metal surface [J]. SPIE High Speed Photography and Photonics, 1988, 1032: 553-557. Ye Y, Zheng X X, Li Z Y, et al. Microjet measurement using the pulsed in-line holography [J]. High Power Laser and Particle Beams, 2004, 18(2): 159-162. (in Chinese) 叶雁, 郑贤旭, 李作友, 等. 用脉冲激光同轴全息技术测量微射流 [J]. 强激光与粒子束, 2004, 18(2): 159-162. Wang W, Li Z Y, Li X Z, et al. Study on microjet on ultra-high speed shadow photography [J]. J Appl Optics, 2008, 29(4): 526-529. (in Chinese) 汪伟, 李作友, 李欣竹, 等. 用超高速阴影摄影技术研究微喷射现象 [J]. 应用光学, 2008, 29(4): 526-529. Vogan W S, Anderson W W, Grover M. Piezoelectric characterization of ejecta from shocked tin surfaces [J]. J Appl Phys, 2005, 98(11): 113508. Zheng X X, Liu Z Q, Wang R B, et al. Measurement of shock wavefront produced by ejecta loading drive [J]. Chinese Journal of High Pressure Physics, 2004, 18(2): 187-192. (in Chinese) 郑贤旭, 刘振清, 王荣波, 等. 微喷加载装置中爆轰波阵面的测量 [J]. 高压物理学报, 2004, 18(2): 187-192. Jiang X G, Wang W, Wang W L. Conversion efficiency of the CsI: Tl crystal excitated by X-ray [J]. High Power Laser and Particle Beams, 2005, 17(2): 203-205. (in Chinese) 江孝国, 王伟, 王婉丽. X光作用下CsI: Tl晶体的转换效率研究 [J]. 强激光与粒子束, 2005, 17(2): 203-205. Ye Y, Qi S X, Li Z R, et al. Areal density resolution capability in hard X-ray digital image system [J]. High Power Laser and Particle Beams, 2009, 21(10): 1467-1470. (in Chinese) 叶雁, 祁双喜, 李泽仁, 等. 硬X光光电成像系统面密度分辨能力研究 [J]. 强激光与粒子束, 2009, 21(10): 1467-1470. Mizusako F, Ogasawara K, Kondo K, et al. Flash X-ray radiography using imaging plates for the observation of hypervelocity objects [J]. Rev Sci Instrum, 2005, 76(2): 025102. Elias P, Chaperon P, Mondot M. Experimental study of the slowing down of shock-induced matter ejection into argon gas [C]//Schmidt S C, Johnson J N, Davison L W. Shock Compression of Condensed Matter-1989. Amsterdam: North-Holland, 1990.
点击查看大图
计量
- 文章访问数: 6942
- HTML全文浏览量: 355
- PDF下载量: 458