In:
Propellants, Explosives, Pyrotechnics, Wiley, Vol. 46, No. 1 ( 2021-01), p. 39-45
Kurzfassung:
Physical vapor deposition (PVD) of high explosives can produce energetic samples with unique microstructure and morphology compared to traditional powder processing techniques, but challenges may exist in fabricating explosive films without defects. Deposition conditions and substrate material may promote microcracking and other defects in the explosive films. In this study, we investigate effects of engineered microscale defects (gaps) on detonation propagation and failure for pentaerythritol tetranitrate (PETN) films using ultra‐high‐speed refractive imaging and hydrocode modelling. Observations of the air shock above the gap reveal significant instabilities during gap crossing and re‐ignition.
Materialart:
Online-Ressource
ISSN:
0721-3115
,
1521-4087
DOI:
10.1002/prep.202000029
Sprache:
Englisch
Verlag:
Wiley
Publikationsdatum:
2021
ZDB Id:
1481105-4