Accession Number : ADA337508

Title :   An Optically Based Pressure Measurement Approach for Interior Ballistic Testing

Descriptive Note : Final rept. May 94-Jan 97

Corporate Author : ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD

Personal Author(s) : McQuaid, Michael J.

PDF Url : ADA337508

Report Date : AUG 1997

Pagination or Media Count : 50

Abstract : This report describes a recent patent disclosure for obtaining an optically based measurement of pressure. The concept, which utilizes pressure-induced changes in polarization to modulate intensity, incorporates a means of addressing a universal shortcoming of optically based techniques-namely, temperature sensitivity. The invention has application for any pressure regime, but will be particularly advantageous for electrically or physically harsh environments. Embodiments of this concept may provide a suitable replacement for piezoelectric-based pressure transducers used in the testing of advanced gun propulsion system concepts. A design for a transducer that could be used to measure pressure from 0 to 1 GPa is provided as an example, and issues related to building a prototype for use in ballistic testing are identified and discussed.

Descriptors :   *OPTICAL DETECTION, *PRESSURE MEASUREMENT, *INTERIOR BALLISTICS, PRESSURE GRADIENTS, PRESSURE TRANSDUCERS, PROTOTYPES, OPTICAL DETECTORS, LIGHT MODULATORS, PIEZOELECTRIC TRANSDUCERS.

Subject Categories : Optical Detection and Detectors
      Ballistics

Distribution Statement : APPROVED FOR PUBLIC RELEASE