利用薄片石英测量电子束热激波
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摘要
介绍了在"闪光二号"脉冲电子束加速器上采用x切割薄片石英压电传感技术测量热激波的情况。传感器通过对压电信号的积分得到热激波波形,克服了厚石英晶体传感技术测量有效时间受厚度限制的缺点。实验得出:(1)一维应变冲击条件下,在1400MPa应力以下,薄片石英压电系数平均为2.10pc/N;(2)靶后固定位置的热激波峰值与入射电子束能注量成线性增加关系;(3)涂层材料对内层靶表面形成了有效保护,并有效降低了靶中传播的热激波峰值强度;(4)在一维应变状态下,石英晶片工作面积大,压电信号的信噪比高,特别适合用于复合材料中的热激波测量。
In this paper,on"FLASH II"pulse electron beam accelerator,the measurement technology of thermal shock waves induced by electron beam using x-cut thin slice quartz piezoelectric transducer is introduced.By integrating the piezoelectric signal,transducers obtain the thermal shock wave waveform,which overcomes the thickness limitation of thick quartz crystal sensing technology during the effective time range of measurement.Experimental results indicate:(1)Under the condition of one dimensional strain shock,the average piezoelectric coefficient of thin quartz is 2.10 pc/N,within the range of 1400 Mpa stress.(2)The peak values of thermal shock wave at a fixed position behind the target increase linearly with the increase of energy fluence of incident electron beam.(3)The coating material can effectively protect the inner target surface and reduce the peak intensity of thermal shock wave propagating in the target.(4)Under the condition of one-dimensional strain,thin slice quartz has large working area and high signal-to-noise ratio(SNR)of piezoelectric signal.It is especially suitable for thermal shock wave measurement in composite materials.
In this paper,on"FLASH II"pulse electron beam accelerator,the measurement technology of thermal shock waves induced by electron beam using x-cut thin slice quartz piezoelectric transducer is introduced.By integrating the piezoelectric signal,transducers obtain the thermal shock wave waveform,which overcomes the thickness limitation of thick quartz crystal sensing technology during the effective time range of measurement.Experimental results indicate:(1)Under the condition of one dimensional strain shock,the average piezoelectric coefficient of thin quartz is 2.10 pc/N,within the range of 1400 Mpa stress.(2)The peak values of thermal shock wave at a fixed position behind the target increase linearly with the increase of energy fluence of incident electron beam.(3)The coating material can effectively protect the inner target surface and reduce the peak intensity of thermal shock wave propagating in the target.(4)Under the condition of one-dimensional strain,thin slice quartz has large working area and high signal-to-noise ratio(SNR)of piezoelectric signal.It is especially suitable for thermal shock wave measurement in composite materials.
引文
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[10]林玉亮,卢芳云,卢力.石英晶体在霍普金森压杆实验中的应用[J].高压物理学报,2005,19(4):484-489(LIN Yuliang,LU Fangyun,LU Li.The application of quartz transducer technique in SHPB[J].Chinese Journal of High Pressure Physics,2005,19(4):484-489(in Chinese))
[11]王宝珍,胡时胜.肌肉类粘弹性超软材料SHPB实验的应力应变均匀性分析[J].实验力学,2011,26(4):377-382(WANG Baozhen,HU Shisheng.Analysis of stress and strain uniformity of muscle-like extra-soft viscoelastic material in SHPB experiment[J].Journal of Experimental Mechanics,2011,26(4):377-382(in Chinese))
[12]黄正平.爆炸与冲击电测技术[M].北京:国防工业出版社,2006:212(HUANG Zhengping.Explosion and measuring technique[M].Beijing:National Defense Industry Press,2006:212(in Chinese))
[13]王道荣,刘佳琪,汤文辉,等.强脉冲X光热力学效应研究方法概论[M].北京:中国宇航出版社,2013:149(WANG Daorong,LIU Jiaqi,TANG Wenhui,et al.Introduction to study method of the intense pulse X-ray′s thermal mechanical effects[M].Beijing:Chinese Space Navigation Press,2013:165(in Chinese))
[14]周南,乔登江.脉冲束辐照材料动力学[M].北京:国防工业出版社,2002:630(ZHOU Nan,QIAO Dengjiang.Materials dynamics under pulse beam radiation[M].Beijing:National Defense Industrial Press,2002:630(in Chinese))
[2] Jones G A,Halpin W J.Shorted guard-ring quartz gauge[J].Review of Scientific Instruments,1968,39(3):258-261.
[3] Hayes D B,Gupta Y M.Impact response of a shorted guard-ring quartz gauge between 20and 26kilobar[J].Review of Scientific Instruments,1974,45(12):1554-1560.
[4]吴嵩毓.短路电流石英传感器及其动态标定[J].爆炸与冲击,1984,5(4):61-66(WU Songyu.Piezoelectric current quartz-gauge and tts dynamic calibration[J].Explosion and Shock Waves,1984,5(4):61-66(in Chinese))
[5] Graham R A,Ingram C W.Piezoelectric current from X-cut quartz subjected to short-duration shock wave loading[R].SAND 78-1911,1978:61-72.
[6] Taylor P E,Gilbert P H,Kernthaler C,et al.Quartz gauge response in ion radiation[C].AIP Conference Proceedings,1996,370:1033-1036.
[7]林鹏,王肖钧,彭常贤,等.脉冲辐照下三维多向编织复合材料热激波的实验研究[J].实验力学,2005,20(1):28-33(LIN Peng,WANG Xiaojun,PENG Changxian,et al.Experimental studies of thermal shock wave in 3-d braided composite under pulsed beam radiation[J].Journal of Experimental Mechanics,2005,20(1):28-33(in Chinese))
[8]林鹏,李捷,王等旺.高碱玻璃布在电子束辐照下热力学效应实验研究[J].兵工学报,2013,34(s1):120-124(LIN Peng,LI Jie,WANG Dengwang.Experimental studies of thermo-mechanical effects in alkali glass-fiber cloth under electron beam irradiation[J].Acta Armamentarii,2013,34(s1):120-124(in Chinese))
[9] Chen W,Lu F,Zhou B A.A quartz-crystal-embedded split Hopkinson pressure bar for soft materials[J].Experimental Mechanics,2000,40(1):1-6.
[10]林玉亮,卢芳云,卢力.石英晶体在霍普金森压杆实验中的应用[J].高压物理学报,2005,19(4):484-489(LIN Yuliang,LU Fangyun,LU Li.The application of quartz transducer technique in SHPB[J].Chinese Journal of High Pressure Physics,2005,19(4):484-489(in Chinese))
[11]王宝珍,胡时胜.肌肉类粘弹性超软材料SHPB实验的应力应变均匀性分析[J].实验力学,2011,26(4):377-382(WANG Baozhen,HU Shisheng.Analysis of stress and strain uniformity of muscle-like extra-soft viscoelastic material in SHPB experiment[J].Journal of Experimental Mechanics,2011,26(4):377-382(in Chinese))
[12]黄正平.爆炸与冲击电测技术[M].北京:国防工业出版社,2006:212(HUANG Zhengping.Explosion and measuring technique[M].Beijing:National Defense Industry Press,2006:212(in Chinese))
[13]王道荣,刘佳琪,汤文辉,等.强脉冲X光热力学效应研究方法概论[M].北京:中国宇航出版社,2013:149(WANG Daorong,LIU Jiaqi,TANG Wenhui,et al.Introduction to study method of the intense pulse X-ray′s thermal mechanical effects[M].Beijing:Chinese Space Navigation Press,2013:165(in Chinese))
[14]周南,乔登江.脉冲束辐照材料动力学[M].北京:国防工业出版社,2002:630(ZHOU Nan,QIAO Dengjiang.Materials dynamics under pulse beam radiation[M].Beijing:National Defense Industrial Press,2002:630(in Chinese))