Hyper-speed Microscopic Optical and Near-IR Imaging System for Observation of Detonation Fronts and Hot Spots
Abstract
Funds in the amount of $87,380.00 is requested for the purchase of required instrumentation forbuilding a remote microscopic imaging system with a micrometer spatial and a sub-nanosecondtemporal resolution. The system will enable direct remote imaging of detonation front geometry,hot spot formation at heterogeneities, as well as performing spatially resolved two-color infraredpyrometry to acquire temperature fields without the need for emissivity assumptions. The systemwill consist of a 2 m long endoscopic imaging fiber with a collimating lens with a workingdistance of 50 mm, coupled using a microscope objective to an image intensifier that can begated down to 200 ps, which is coupled to a high-speed camera. The arrangement allows a largestandoff distance for the camera and image intensifier, which can otherwise be damaged by theshockwaves and ejecta from the detonation. The results will give unprecedented insight into howa detonation front moves microscopically, the effect of microstructure and hot spot formation ondetonation and the associated temperature fields. This system will also be applicable to numerousother DoD projects, both inside and outside Purdue University. We anticipate collaborations atPurdue as well as numerous other universities and labs, because of the unique capability that willbe developed. The requested instrumentation complements our current capabilities and woulddramatically impact numerous programs and will also greatly benefit the education of ourstudents.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Sep 19, 2018
- Source ID
- FA95501810518
Entities
People
- Steven F Son
Organizations
- Air Force Office of Scientific Research
- United States Air Force
- University of Virginia