Revolutionary Materials Research Technology for High-Strain-Rate Ordnance Research

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA8651-06-C-0123
Agency Tracking Number: F051-160-3236
Amount: $748,621.00
Phase: Phase II
Program: SBIR
Awards Year: 2006
Solicitation Year: 2005
Solicitation Topic Code: AF05-160
Solicitation Number: 2005.1
Small Business Information
200 Barr Harbor Drive, Suite 400, West Conshohocken, PA, 19428
DUNS: 072727790
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 John Tyson II, PE
 President
 (610) 722-5100
 tyson@trilion.com
Business Contact
 Timothy Schmidt
Title: Vice President
Phone: (610) 722-5100
Email: schmidt@trilion.com
Research Institution
N/A
Abstract
Air Force weapons designers require in-depth knowledge of high strain rate response of ductile materials so they can tailor the performance of multi-mode warheads. The Split Hopkinson Bar technique (SHB) is the most commonly used technique for measuring the mechanical properties of materials (stress-strain curves) at strain rates ranging from 200 to 5000 s-1. A critical requirement for obtaining the correct stress, strain rate, and strain in the specimen from the recorded stress waves in a SHB test is that the specimen is in equilibrium and the state of stress and deformation in the specimen is uniaxial and uniform. The objective of this project is development, performance testing and delivery of a 3D image correlation system using digital high speed cameras that obtains full-field strain maps at data acquisition rates of up to 250,000 frames per second. In Phase I, strain concentrations around a 0.0625” diameter hole in a copper specimen were clearly visualized and quantified, and necking evolution was profiled at 10 microsecond increments on a dogbone specimen. Phase II will include standard benchmark performance tests and standards, examples of model to experiment validation techniques and results, and measurements of material behavior under various loading conditions and geometries.

* Information listed above is at the time of submission. *

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