连续测量爆轰波和冲击波波阵面位置的波长-时间映射型光纤光栅传感器技术

邓向阳; 罗振雄; 刘寿先; 蒙建华; 田建华; 何莉华

doi:10.11883/bzycj-2017-0416

连续测量爆轰波和冲击波波阵面位置的波长-时间映射型光纤光栅传感器技术

doi: 10.11883/bzycj-2017-0416

1.
中国科学技术大学物理学院，安徽合肥 230022
2.
中国工程物理研究院流体物理研究所，四川绵阳 621999

基金项目: 国家自然科学基金项目（11672275）；中国工程物理研究院科学技术发展基金项目（2015B0401079，2015B0401080）

详细信息

作者简介:
邓向阳（1975－　），男，硕士，副研究员，dxyifp@caep.cn

中图分类号: O384
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出版历程
- 收稿日期: 2017-11-17
- 修回日期: 2018-05-15
- 网络出版日期: 2019-02-25
- 刊出日期: 2019-03-01

Wavelength-time mapping linear chirped fiber bragg grating sensor for measuring the wave-front position of detonation and shock wave

1.
School of Physical Sciences, University of Science and Technology of China, Hefei 230022, Anhui, China
2.
Institute of Fluid Physics, CAEP, Mianyang 621999, Sichuan, China

摘要

摘要: 针对强度型线性啁啾光纤布拉格光栅(LCFBG)传感器测量爆轰波、冲击波波阵面位置时不仅需要LCFBG被完全破坏，而且需要其反射长波长处先于短波长处被破坏的缺点，建立了一种波长-时间映射型LCFBG传感器技术。该技术通过高重频、锁模飞秒激光器和色散光纤将爆轰波、冲击波作用下LCFBG的瞬态反射谱，转为相同形状的脉冲信号，然后根据该脉冲信号的3 dB时宽计算出LCFBG的长度，即为爆轰波、冲击波波阵面位置。对波长-时间映射型LCFBG传感器的时间分辨本领、波阵面位置的相对测量不确定度进行了分析，得出它们的值分别为10 ns和1.7%；针对波长-时间映射型LCFBG传感器，提出了一种二维时间映射数据处理方法，将脉冲信号的一维时间映射为二维时间，从而将脉冲信号转换为二维图形，再通过一系列变换，就可获得爆轰波、冲击波波阵面位置的二维图形。为验证该技术的有效性，用波长-时间映射型LCFBG传感器测量了JB-9014炸药的爆轰波波阵面位置，对位置曲线进行线性拟合得到的爆轰波速度为7.58 km/s，与电探针测量值7.63 km/s能很好地吻合，相对偏差小于1%。
- 线性啁啾光纤布拉格光栅 /
- 高重频锁模激光器 /
- 波长-时间映射 /
- 啁啾率 /
- 反射谱
Abstract: A new wavelength-time mapping linear chirped fiber Bragg grating (LCFBG) sensor is proposed, to resolve the problems in which the LCFBG needs to be entirely destroyed and be damaged accordingly to the reflective position for the longer wavelength prior to the shorter wavelength in the intensive LCFBG sensor. In this sensor, the reflective spectrum of the LCFBG destroyed by the detonation and the shock wave is transferred into the same temporal pulse by the high-repetition rate mode-locked laser and the dispersive fiber, which is then used to obtain the length of the LCFBG. The time-resolution and the relative uncertainty of the wave-front position in this sensor are analyzed and their values are found to be 10 ns and 1.7%, respectively. For the data analysis, the experimental data is transformed to 2D image and the wave-front position of the detonation and the shock wave is calculated from this 2D image. The detonation speed of the JB-9014 explosive is linearly fitted to be 7.58 km/s from the wave-front position of the detonation, which is coincidental with the electrical pin’s result of 7.63 km/s (relative error less than 1%).
- linear chirped fiber Bragg grating /
- high-repetition rate mode-locked laser /
- wavelength-time mapping /
- chirped rate /
- reflective spectrum

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图 1 波长-时间映射型LCFBG传感器的结构示意图

Figure 1. Sketch of the wavelength-time mapping LCFBG sensor

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图 2 有机玻璃中冲击波波阵面位置测量的脉冲信号

Figure 2. Pulse signal for measuring the wave-front position of the shock wave in the PMMA

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图 3 3个不同时刻附近的10 ns周期信号

Figure 3. Periodic signals at various 10 ns time slice windows

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图 4 脉冲信号的二维映射图形

Figure 4. Two dimensional mapping figure of the pulse signal

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图 5 LCFBG的二维图形

Figure 5. Two dimensional mapping figure of the LCFBG

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图 6 LCFBG的动态长度曲线

Figure 6. LCFBG length versus time

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图 7 JB-9014炸药爆轰波波阵面位置测量实验布局

Figure 7. Configuration for measuring the wave-front position of the JB-9014 explosive

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图 8 数字示波器记录的脉冲信号

Figure 8. Experimental signals recorded by digital oscilloscope

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图 9 爆轰波波前位置曲线

Figure 9. Curve of wavefront movement

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参考文献(12)

[1]	HILL L G, BDZIL J B, ASLAM T D. Front curvature rate stick measurements and detonation shock dynamics calibration for PBX9502 over a wide temperature [C]//Proceeding of Eleventh Symposium (International) on Detonation. Colorado: Office of Naval Research, 1997: 1029−1037.
[2]	BDZIL J B, FICKETT W, STEWART D S. Detonation shock dynamics: a new approach to modeling multi-dimensional detonation waves [C]//Proceedings of the Ninth Symposium (International) on Detonation. Portland: OR, 1989: 730−742.
[3]	ASLAM T D, BDZIL J B, HILL L G. Extensions to DSD theory: analysis of PBX 9502 rate stick data [C]//Proceedings of the Eleventh International Detonation Symposium. Snowmass: CO, 1998: 21−29.
[4]	徐森, 刘大斌, 彭金华, 等. 药柱冲击波在有机玻璃中的衰减特性研究 [J]. 高压物理学报, 2010, 24(6): 421–437 doi: 10.11858/gywlxb.2010.06.005 XU Sen, LIU Dabin, PENG Jinhua, et al. Study on the shock wave attenuation of the booster charge in the PMMA gap [J]. Chinese Journal of High Pressure Physics, 2010, 24(6): 421–437 doi: 10.11858/gywlxb.2010.06.005
[5]	BENTEROUT J J, UDD E, WILKINS P, et al. In-situ continuous detonation velocity measurements using fiber-optic Bragg grating sensors [C]//Proceedings of the 34th International Pyrotechnics Seminar V1. Beaune, France, 2007: 309−322.
[6]	HARE D E, HOLTKAMP D B, STRAND O T. Embedded fiber optic probes to measure detonation velocities using the photonic Doppler velocimeter: LLNL-PROC-425117 [R]. Livermore: Lawrence Livermore National Laboratory, 2010.
[7]	MERCIER P, BENIER J, FRUGIER P A, et al. Nitromethane ignition observed with embedded PDV optical fibers [C]. EPJ Web of Conferences. EDP Sciences, 2010, 10: 00016.
[8]	RODRIGUEZ G, STEVE M G. Ultrafast fiber Bragg grating interrogation for sensing in detonation and shock wave experiments [J]. Sensors, 2017, 17: 248.
[9]	邓向阳, 刘寿先, 彭其先, 等. 测量炸药旁侧爆轰波速度的啁啾光纤布拉格光栅传感器技术 [J]. 爆炸与冲击, 2015, 35(2): 191–196 doi: 10.11883/1001-1455(2015)02-0191-06 DENG Xiangyang, LIU Shouxian, PENG Qixian, et al. Chirped fiber Bragg grating sensor for side detonation velocity measurement of the explosion [J]. Explosion and Shock Waves, 2015, 35(2): 191–196 doi: 10.11883/1001-1455(2015)02-0191-06
[10]	PENG W, HAO L, LIU T L, et al. Detonation velocity measurement with chirped fiber Bragg grating [J]. Sensor, 2017, 17: 2252.
[11]	GODA K, SOLLI D R, TSIA K K, et al. Theory of amplified dispersive Fourier transformation [J]. Physical Review A, 2009, 80(4): 043821.
[12]	谭多望, 方青, 张光升, 等. 钝感炸药直径效应实验研究 [J]. 爆炸与冲击, 2003, 23(4): 300–304 TAN Duowang, FANG Qing, ZHANG Guangsheng, et al. Experimental study on the diameter effect for JB-9014 rate sticks [J]. Explosion and Shock Waves, 2003, 23(4): 300–304