High Energy Laser and Ultra-high-speed camera for multiscale investigation of materials subject to hypersonic impacts
Abstract
Publicly releasableDr. Eric Marineau, Program Manager, Hypersonic Aerothermodynamics, High-Speed Propulsion and MaterialsHypersonicvehicles in the atmosphere, space structures in outer space, and re-entry vehicles in the Martian atmosphere are impacted by microscale particles at hypersonic velocities. The mechanical behavior of materials in such extreme applications is complicated due to scale dependence, coupling of pressure, strain rates, and temperatures on the damage behavior. Though considerable research has been conducted towards understanding the macroscopic mechanical behavior of materials under such loading conditions, relatively little is known quantitatively at the microscale. Also, the available data from the previous studies in such extreme environments are scarce due to the complicated experimental setups required to conduct hypersonic impact experiments. To elucidate the mechanics of deformation and failure of materials in these extreme applications requires novel, more straightforward, and interpretable experimental techniques. Therefore, we need to develop experimental techniques to generate microscale hypersonic impacts and measure in situ local deformations. Towards achieving this goal, this proposal requests funds for the Acquisition of a High Energy Laser, Laser optics, and anultra-high-speed camera which will serve as a fundamental characterization tool in our laboratory. The development of the hypersonic impact facility will enable our laboratory to perform research that was not possible in the past and advance the knowledge of the hypersonic impact behavior of materials. This research can provide fundamental insights into material behavior and failure at the micro length and sub-microsecond time scales. Combined with our department s broad experience in theory and modeling at the Universityof Minnesota, we plan to use the resulting experimental data to develop multiscale models and incorporate them into the hypersonic simulation codes.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jul 24, 2023
- Source ID
- N000142312697
Entities
People
- Suraj Ravindran
Organizations
- Office of Naval Research
- Regents of the University of Minnesota
- United States Navy