Opto-Electro-Structural Lab.

SHOCK & VIBRATION

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

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