MEASUREMENT OF ICE ACCRETION AND PERSISTANCE AT UNMANNED SITES

Award Information
Agency: Department of Defense
Branch: Army
Contract: N/A
Agency Tracking Number: 12262
Amount: $49,859.00
Phase: Phase I
Program: SBIR
Awards Year: 1990
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
2300 Canyon Blvd, Boulder, CO, 80302
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Geoffrey E Hill
 (303) 449-5588
Business Contact
Phone: () -
Research Institution
N/A
Abstract
A SIMILAR METHOD TO MEASURING ICE ON A VIBRATING WIRE IS USED TO MEASURE PERSISTENT ICE ON SMALL STRUCTURES. THE MEASURMENT OF VIBRATION OF STRUCTURAL MEMBERS WILL UTILIZE AN ACCELEROMETER; IT PRODUCES A VERY SENSITIVE RESULTS FOR A WIDE DYNAMIC RANGE OF ATTACHED ICE MASS. A SMALL TAPPING MECHANISM WILL BE DEVELOPED TO INDUCE FREQUENCY VIBRATION. SIGNAL CONDITIONING AND PROCESSING ARE PROPOSED, INCLUDING USE OF A MICRO-CONTROLLER, A CRYSTAL CONTROLLED WAVE-LENGTH TIMER AND OTHER APPROACHES. PHASE I WILL CONSIST OF SEVERAL PRIMARY STEPS; 1) SELECTING APPROPRIATE ACCELEROMETERS(S) FOR A VARIETY OF STRUCTURAL MATERIALS TO BE TESTED; 2) ANALYZING THE VARIOUS OPTIONS FOR SIGNAL PROCESSING; 3) SELECTING APPROPRIATE POWER DEVICES; AND 4) PERFORMING BASIC TESTS TO ESTABLISH THE TECHNIQUE AND TO CLEARLY IDENTIFY THE ADDITIONAL RESEARCH NEEDED TO MKE THE PRODUCT COMMERCIALLY VIABLE. A WORKING SYSTEM AND A FINAL REPORT WILL BE PROVIDED.

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

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