RUBY STRESS AND PRESSURE MEASUREMENT SYSTEMS FOR BROADBAND UGT MEASUREMENT APPLICATIONS

RUBY STRESS PRESSURE MEASUREMENT SYSTEMS WILL OFFER SIGNIFICANT ADVANTAGES TO THE REQUIREMENTS OF UNDERGROUND TESTING. RUBY STRESS AND PRESSURE MEASUREMENT SYSTEMS OFFER SENSING RANGES AS LARGE AS 125 KBAR AND SUB-NANOSECOND RISE TIME CAPABILITY. THIS RESULTS IN THESE SENSORS BEING ESPECIALLY SUITED TO THE REQUIREMENTS OF CLOSE IN PRESSURE AND STRESS MEASUREMENTS. TO DATE SYSTEMS BASED ON THIS TECHNIQUE HAVE NOT BEEN DEVELOPED FOR FIELD USE. THE PROPOSED PROGRAM ADDRESSES THE DEVELOPMENT OF RUBY STRESS AND PRESSURE MEASUREMENT SYSTEMS FOR BOTH UNDERGROUND AND ABOVE GROUND TESTS. IN THE PROPOSED PROGRAM THE REQUIREMENTS FOR RUBY STRESS AND PRESSURE SENSORS TO SUPPORT THESE TESTS WILL BE ASSESSED. THE RUBY MEASUREMENT TECHNOLOGY DEVELOPED AT WASHINGTON STATE UNIVERSITY WILL BE TRANSFERREDTO GEO-CENTERS. A CONCEPTUAL DESIGN FOR FIELDWORTHY MEASUREMENT SYSTEMS WILL BE DEVELOPED. ADDITIONALLY, AN ABOVE GROUND SIMULATION TEST PROGRAM TO VALIDATE THE USE OF THIS MEASUREMENT TECHNOLOGY ON UGT'S WILL BE DEVELOPED I THE PHASE I PRGRAM.