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Development of Multi-channel Simultaneous Laser Shock Sensing System for Linear Explosive-induced Pyroshock Propagation Prediction

선형화약 파이로 충격파 전파 예측을 위한 다채널 동시 레이저 충격파 센싱 시스템 개발

  • Jang, Jae Kyeong (LANL-CBNU Engineering Institute-Korea and Department of Aerospace Engineering, Chonbuk National University) ;
  • Abbas, Haider (Department of Aerospace Engineering, Korea Advanced Institude of Science and Technology) ;
  • Lee, Jung Ruyl (Department of Aerospace Engineering, Korea Advanced Institude of Science and Technology)
  • Received : 2015.06.01
  • Accepted : 2015.09.12
  • Published : 2015.10.01

Abstract

Multi-channel DAQ system was developed to predict propagation characteristic of the shock wave generated by linear explosive. The system can generate shock wave from 1000 points per second using a pulsed laser and simultaneously obtain the shock wave signals using 15 chanel contact sensor. The system is expected to pridict the propagation characteristics of various linear explosive-induced pyroshock because it can be used with a user-defined time delay that corresponds to detonation speed of the linear explosive.

선형 화약 폭발의 전파 특성예측을 위해 다채널 동시 충격파 센싱 시스템을 개발하였다. 개발된 시스템은 펄스 레이저를 이용하여 초당 1000점에서 충격파 생성이 가능하며, 접촉식 센서를 이용하여 15개 채널에서 동시에 충격파 획득이 가능하다. 특히, 선형 화약의 폭파 시간에 상응한느 각 채널의 시간 지연을 사용자 요구에 따라 적절하게 적용할 수 있는 능력을 갖춤으로써 다양한 선형 화약의 폭발에 의한 충격파 전파를 예측할 수 있을 것으로 기대된다.

Keywords

References

  1. Anon, "Pyroshock Test Criteria," NASA-STD 7003A, 2011.
  2. IEST, "Pyroshock Testing Techniques," IEST-RP-DTE032.2, 2009.
  3. Anon, "Environmental Engineering Considerations and Laboratory Tests," MIL-STD-810G, 2008.
  4. Laurence, J., "Pyrotechnic System Failures: Caused and Ptrvention," NASA TM 100633, 1988.
  5. Jang, J.K. and Lee, J.R., "Nondestructive Prediction of Point Source Pyroshock Response Spectra based on Experimental Conditioning of Laser-induced Shocks," Optics & Laser Technology, Vol. 61, pp. 24-33, 2014. https://doi.org/10.1016/j.optlastec.2014.02.005
  6. Huygens. C., Traitee de la Lumieere. Pieter Van Der Aa, Ch. 1, Paris, France, 1690.
  7. Lee, J.R., Jang, J.K., Choi, M. and Kung, C.W., "Visualization and Simulation of a Linear Explosive-Induced Pyroshock Wave Using Q-switched Laser and Phased Array Tranducers in a Space Launcher Composite Structure," Optics & Laser Technology, Vol. 67, pp. 12-19, 2015. https://doi.org/10.1016/j.optlastec.2014.09.005
  8. Wikipedia, "Nyquist-Shannon sampling theorem," World Wide Web location https://en.wikipedia.org/wiki/Nyquist%E2 %80%93Shannon_sampling_theorem, 2015.