Accession Number : ADA324704

Title :   Time-Resolved Stress Measurements in Projectile Impacts: 2-D Loading.

Descriptive Note : Final rept.,

Corporate Author : WASHINGTON STATE UNIV PULLMAN SHOCK DYNAMICS LAB

Personal Author(s) : Gupta, Y. M. ; Zimmerman, K.

PDF Url : ADA324704

Report Date : MAR 1997

Pagination or Media Count : 15

Abstract : Experimental developments are reported that demonstrate the feasibility of using miniature optical stress sensors to determine the target response in 2-D loading situations arising due to projectile impacts. Oriented ruby chips embedded in aluminum and marble targets, at locations directly underneath rod impactors, were used to obtain time resolved, in-situ measurements. Time resolution (approx. 100 ns) and durations (approx. 6 us) reported here are intended to be representative and can be varied depending on the experimental requirements. Given the importance of obtaining in-situ, stress histories in targets subjected to 2-D dynamic loading, future work needs to address the development of analytic procedures to permit accurate and efficient inversion of the sensor output.

Descriptors :   *PIEZOELECTRIC GAGES, *IMPACT LOADS, COMPUTERIZED SIMULATION, IMPACT STRENGTH, TERMINAL BALLISTICS, ALUMINUM, IMPACT PREDICTION, PROJECTILE TRAJECTORIES, EXTERIOR BALLISTICS.

Subject Categories : Ballistics

Distribution Statement : APPROVED FOR PUBLIC RELEASE