冲击载荷下K9玻璃的光学特性
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摘要
K9玻璃常作为冲击载荷下失效波(破坏波)萌生机制和脆性材料动态断裂特性的研究对象,而当作为冲击窗口材料时,由于冲击压力范围限制,其光学特性研究常被忽略。通过平板撞击实验,结合激光多普勒测速系统(DPS:Doppler Pin System,激光波长为1 550nm),获得了冲击波传播过程中不同光学测试界面运动的速度历史。通过分析原始干涉信号和界面速度剖面的时间对应关系,获得了K9玻璃保持冲击透明性及弹性响应的压力范围。研究结果表明,当冲击压力低于8GPa时,K9玻璃能保持良好的光学透明性,其动态折射率随密度的变化呈典型线性关系。
K9glass is often used to study the generation mechanism of failure wave and the dynamic fracture property of brittle materials under impact loading.However,the research on the optical property of K9 glass is often ignored due to the impact pressure limit.In this work,through the plane impact experiment combining the Doppler pin system(DPS)with the laser wave length of 1 550 nm,the velocity history of different optical testing interfaces during the spread process of the shock wave was obtained.Based on an analysis of the temporal correspondence between the original interference signal and the interface velocity profile,the pressure range within which the K9 glass maintains impact transparence and elastic response was achieved.The results show that when the impact pressure is less than8.0GPa the K9 glass can maintain good transparent property,and its dynamic refractivity changes linearly with the density.
K9glass is often used to study the generation mechanism of failure wave and the dynamic fracture property of brittle materials under impact loading.However,the research on the optical property of K9 glass is often ignored due to the impact pressure limit.In this work,through the plane impact experiment combining the Doppler pin system(DPS)with the laser wave length of 1 550 nm,the velocity history of different optical testing interfaces during the spread process of the shock wave was obtained.Based on an analysis of the temporal correspondence between the original interference signal and the interface velocity profile,the pressure range within which the K9 glass maintains impact transparence and elastic response was achieved.The results show that when the impact pressure is less than8.0GPa the K9 glass can maintain good transparent property,and its dynamic refractivity changes linearly with the density.
引文
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[15]JONES S C,GUPTA Y M.Refractive index and elastic properties of Z-cut quartz shocked to 60kbar[J].J Appl Phys,2000,88(10):5671-5679.
[16]JONES S C,VAUGHAN B A M,GUPTA Y M.Refractive indices of sapphire under elastic,uniaxial strain compression along the a axis[J].J Appl Phys,2001,90(10):4990-4996.
[17]SETCHELL E R.Refractive index of sapphire at 532nm under shock compression and release[J].J Appl Phys,2002,91(5):2833-2841.
[18]HAYES D B,HALL C A,ASAY J R,et al.Continuous index of refraction measurements to 20GPa in Z-cut sapphire[J].J Appl Phys,2003,94(4):2331-2336.
[19]LALONE B M,FAT'YANOV O V,ASAY J R,et al.Velocity correction and refractive index changes for[100]lithiumfluoride optical windows under shock compression,recompression,and unloading[J].J Appl Phys,2008,103(9):3587.
[20]VALENZUELA A R,RODRIGUEZ G,CLARKE S A,et al.Photonic Doppler velocimetry of laser-ablated ultrathin metals[J].Rev Sci Instrum,2007,78(1):22.
[21]王翔.空间-时间分辨的波剖面测量技术研究[R].绵阳:中国工程物理研究院,2009:24-26.WANG X.Measure techniques for spacial-temporal resolutions wave profiles[R].Mianyang:CAEP,2009:24-26.
[22]HAYES D.Unsteady compression waves in interferometer windows[J].J Appl Phys,2001,89(11):6484-6486.
[2]URTIEW P A,GROVER R.Temperature deposition caused by shock interaction with material interface[J].J Appl Phys,1974,45(1):140-145.
[3]JENSEN B J,HOLTKAMP D B,RIGG P A,et al.Accuracy limits and window corrections for photon Doppler velocimetry[J].J Appl Phys,2007,101(1):523-454.
[4]ASAY J R,GUPTA Y M.Effect of impurity clustering on elastic precursor decay in LiF[J].J Appl Phys,1972,43(5):2220-2223.
[5]李雪梅,俞宇颖,李英华.冲击压缩下Z-切石英的弹性响应特性和折射率[J].物理学报,2010,59(4):2691-2695.LI X M,YU Y Y,LI Y H,et al.Elastic properties and refractive index of shocked Z-cut quartz[J].Acta Phys Sin,2010,59(4):2691-2695.
[6]GRAHAM R A,BROOKS W P.Shock-wave compression of sapphire from 15to 420kbar.The effects of large anisotropic compressions[J].J Phys Chem Solids,1971,32(10):2311-2330.
[7]BARKER L M,HOLLENBACH R E.Shock wave studies of PMMA fused silica,and sapphire[J].J Appl Phys,1970,41(10):4208-4226.
[8]赵剑衡,孙承纬,段卓平.冲击压缩下玻璃等脆性材料中失效波的研究进展[J].物理学进展,2001,21(2):157-175.ZHAO J H,SUN C W,DUAN Z P.Progress in the study of failure waves in glass sample under shock wave loading[J].Progress in Physics,2001,21(2):157-175.
[9]贺红亮,经福谦,金孝刚,等.冲击波极端条件下玻璃的细观结构破坏[J].高压物理学报,1998,12(4):241-249.HE H L,JING F Q,JIN X G,et al.Microstructure damage of glasses under shock wave compression[J].Chinese Journal of High Pressure Physics,1998,12(4):241-249.
[10]徐松林,唐志平,谢卿,等.压剪联合冲击下K9玻璃中的失效波[J].爆炸与冲击,2005,25(5):385-392.XU S L,TANG Z P,XIE Q,et al.Experimental investigation on failure wave in K9glass under combined pressure and shear impact loading[J].Explosion and Shock Waves,2005,25(5):385-392.
[11]郭少锋,陆启生,邓少永,等.ns脉冲激光对K9玻璃的破坏实验[J].强激光与粒子束,2004,16(7):817-820.GUO S F,LU Q S,DENG S Y,et al.Experimetnal study on ns pulsed laser induced damage in K9glass[J].High Power Laser and Particle Beams,2004,16(7):817-820.
[12]BARKER L M.Behavior of dense media under high dynamic pressures[M].New York:Gordon and Breach,1968:483-485.
[13]JOHNSON J N,BARKER L M.Dislocation dynamics and steady plastic wave profiles in 6061-T6aluminum[J].J Appl Phys,1969,40(11):4321-4334.
[14]SETCHELL R E.Index of refraction of shock-compressed fused silica and sapphire[J].J Appl Phys,1979,50(12):8186-8192.
[15]JONES S C,GUPTA Y M.Refractive index and elastic properties of Z-cut quartz shocked to 60kbar[J].J Appl Phys,2000,88(10):5671-5679.
[16]JONES S C,VAUGHAN B A M,GUPTA Y M.Refractive indices of sapphire under elastic,uniaxial strain compression along the a axis[J].J Appl Phys,2001,90(10):4990-4996.
[17]SETCHELL E R.Refractive index of sapphire at 532nm under shock compression and release[J].J Appl Phys,2002,91(5):2833-2841.
[18]HAYES D B,HALL C A,ASAY J R,et al.Continuous index of refraction measurements to 20GPa in Z-cut sapphire[J].J Appl Phys,2003,94(4):2331-2336.
[19]LALONE B M,FAT'YANOV O V,ASAY J R,et al.Velocity correction and refractive index changes for[100]lithiumfluoride optical windows under shock compression,recompression,and unloading[J].J Appl Phys,2008,103(9):3587.
[20]VALENZUELA A R,RODRIGUEZ G,CLARKE S A,et al.Photonic Doppler velocimetry of laser-ablated ultrathin metals[J].Rev Sci Instrum,2007,78(1):22.
[21]王翔.空间-时间分辨的波剖面测量技术研究[R].绵阳:中国工程物理研究院,2009:24-26.WANG X.Measure techniques for spacial-temporal resolutions wave profiles[R].Mianyang:CAEP,2009:24-26.
[22]HAYES D.Unsteady compression waves in interferometer windows[J].J Appl Phys,2001,89(11):6484-6486.