Investigation of the Reaction Zone Characteristics of PETN initiated by a Laser ﬂyer
posterposted on 2018-11-15, 14:25 authored by James Edgeley
Poster presented at the 2018 Defence and Security Doctoral Symposium.
A 400mJ Nd:YAG laser has been used to launch aluminium/alumina ﬂyers into small, low density pellets of pentaerythritol tetranitrate (PETN). The beam proﬁle was homogenised by dispersive smoothing through a length of optical ﬁbre. By varying the thickness and velocity of the ﬂyer, experiments could be performed with a range of input shock magnitudes and durations. Microfabricated sensors were developed to detect the change in electrical conductivity in the reaction zone, and therefore to calculate its thickness and position as a function of time.
(C) British Crown Owned Copyright / 2018