ULTRA HIGH-SPEED COLOR IMAGING OF THE COMBUSTION AND DETONATION IN ENERGETICS
Abstract
Funds of $229,880.00 are requested to acquire a high-speed color camera for in-situ characterization of energetic material reactions and detonations. The high-speed color camera that is capable of imaging 1.75 million frames per second is critically needed to provide an in-situ characterization of interfacial structure, damage evolution, temperature-field evolution (using multicolor pyrometry), solid-solid phase transitions, and product composition of advanced energetics, explosives, composites, and granular materials. The high-speed color camera will also enable us to develop an understanding of hot-spot formation for energetic materials undergoing periodic and dynamic loading and an understanding of coupled piezoelectric and nanoenergetic materials with tailorable and switchable reactivity, both of which are ongoing AFOSR research projects. Several ongoing DoD research projects will also benefit substantially from acquiring the high-speed color camera. Some of these projects funded by Army Research Laboratory (ARL), for example, seek to i) explore new energetic materials and formulations, methods of non-traditional synthesis, ii) create new understanding of the role of microstructure and geometry in energy release, iii) understand how modeling, design, and manufacturing can be used to control and maximize the performance, iv) develop new diagnostics with the spatiotemporal resolution to ascertain and capture key material-process-structure-function-performance relationships, v) educate a new generation of scientist and engineers. The aforementioned DoD research programs describe highly transient, multidimensional, and complex underlying phenomena with coupled physicochemical pathways. However, the current imaging capabilities at Purdue University allow measuring a single parameter along a single dimension and at a single point in time. As such, it is impossible to fully understand these phenomena by measuring a single parameter. The requested instrument (Phantom TMX-7510) is the fastest back-sided illuminated multi-MHz color camera that can go up to 1,750,000 frames per second for multi-parameter absorption and/or emission imaging. Compared to another class of high-speed cameras, such as the Photron Fastcam SA-Z camera with a resolution of 256?24 pixels at 1,000,000 fps, the Phantom TMX-7510 facilitates a much higher spatial resolution of 1280?32 pixels at 1,750,000 fps. Additionally, the binning mode of the camera provides 640?64 pixels at 1,750,000 fps. This will significantly improve the measurements spatial and temporal dynamic range with significantly improved 2D and 3D spatial resolution. This camera also allows flexible triggering options that are critical for the research experiments. The acquisition of the requested instrumentation will allow us to investigate and identify numerous phenomena related to various DoD projects as listed above in addition to the other ongoing research projects at Purdue University, including but not limited to additive manufacturing of novel energetic materials and composite structures, hypersonics, rotating detonation engines, pulsed plasmas, and high propulsion technologies. Several research projects are collaborations with DoD labs such as ARL, NSWC, AFRL, and ARL/Argonne National Lab, 2 which will also benefit immensely from the use of this camera. Based on ongoing DoD research projects conducted here at Purdue University and government labs that Purdue is collaborating with, the capabilities developed by the proposed camera acquisition will significantly improve the quality and quantity of research and research-related education of interest to the DoD. The proposed multi-MHz camera will provide unique capabilities to over 30 professors and 100 graduate students at the Purdue Energetics Research Center (PERC) and Purdue University. This project summary is publicly releasable.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Aug 23, 2023
- Source ID
- W911NF2310341
Entities
People
- Steven F Son
Organizations
- Army Contracting Command
- Purdue University
- United States Army