Speaker
Level for award<br> (Hons, MSc, <br> PhD, N/A)?
MSc
Would you like to <br> submit a short paper <br> for the Conference <br> Proceedings (Yes / No)?
No
Apply to be<br> considered for a student <br> award (Yes / No)?
yes
Abstract content <br> (Max 300 words)<br><a href="http://events.saip.org.za/getFile.py/access?resId=0&materialId=0&confId=34" target="_blank">Formatting &<br>Special chars</a>
The intense light flash emitting from a detonating explosive charge has been the subject of a number of experimental investigations. Optical detectors were employed to capture such emitted light. However, during these studies, a high frequency oscillation was observed superimposed on most of the measured signals. The origin of this high frequency oscillation observed is of interest since it could be possible that it can be an intrinsic property of detonations and the post detonation behavior of the explosive products. Alternatively, it could be an artefact of the measuring methodology.
To study the origin of this oscillation Comp B explosive charges were used with varying mass. EMI screening aids and procedures were undertaken to characterize this oscillation during dynamic and static tests measurements. Mathematical and digital signal processing tools were used to analyze the measured signals in order to investigate the origin of the high frequency oscillation.
During the study, it emerged that the light emitted from the detonation event is linked to the problem under investigation. It is thought that the optical devices detect light rays which are affected/disturbed by turbulence through index of refraction variations during explosion of a detonating charge and record them as a high frequency oscillation.
Key words: High frequency oscillation, explosive charge, detonation, EMI screening, light emission
Main supervisor (name and email)<br>and his / her institution
Chikwembani S, schikwembani@wsu.ac.za
Department of Physics, Walter Sisulu University, Mthatha, 5117, Eastern Cape
Please indicate whether<br>this abstract may be<br>published online<br>(Yes / No)
Yes
