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Pyroshock Team


 Our pyroshock team has been focusing on developing Laser Pyroshock Measurement & Propagation Imager that performs visualization of pyroshock propagation. Currently two major research topics have been studied in this context

·  Development of non-contact explosive-induced shock measurement system

·  Development of multi-point simultaneous laser shock sensing system

 


Pyroshock

 Pyroshock is the response of a structure to high frequency (thousands of hertz), high-magnitude stress waves that propagate throughout the structure as a result of an explosive event include rocket stage separation, missile payload deployment, pilot ejection, automobile airbag inflators, etc. The resultant energies are often high g-force and high frequency which can cause problems for electronic components which have small items with resonant frequencies near those induced by the pyroshock.

 



Research Topics

  Laser Pyroshock Measurement & Propagation Imager  

Our pyroshock research team develops the laser pyroshock measurement & propagation imager. This system is composed of non-contact explosive-induced shock measurement system and multi-point simultaneous laser shock sensing system.

· Non-contact explosive-induced shock measurement system was developed for simultaneous multi-point pyroshock measurement. This system can measure the pyroshock shock waves up to 8 channels simultaneously and presented time domain signal of acceleration in real time.

· Multi-point simultaneous laser shock sensing system was developed for simulation of point-wise and linear explosive induced pyroshock propagation based on pyroshock reconstruction algorithm using  laser-induced shocks. This system can measure the laser-induced shock waves up to 16 channels simultaneously and generated pyroshock wave propagation image finally.

 


Applications

  Point-wise & linear explosive-induced pyroshock measurement test  

 

Point-wise explosive-induced pyroshock

 


Linear explosive-induced pyroshock

 


  Quantitative simulation of pyrotechnic induced shock wave for the actual structure   

 

Point-wise explosive-induced shock wave propagation simulation

 


Linear explosive-induced shock wave propagation simulation



  Pyroshock Measurement and Visualization for Space Launcher & Missile