VICTOR KELLY
Engineers in West Chester, PA
License number
Pennsylvania PE041308E
Category
Engineers
Type
Professional Engineer
Address
Address
West Chester, PA 19380
Professional information
Device For Measuring Bulk Stress Via Insonification And Method Of Use Therefor
US Patent:
2008023, Oct 2, 2008
Filed:
Mar 27, 2007
Appl. No.:
11/727600
Inventors:
Michael K. McInerney - Champaigne IL, US
Sean W. Morefield - Champaign IL, US
Vincent F. Hock - Mahomet IL, US
Victor H. Kelly - West Chester PA, US
John M. Carlyle - Yardley PA, US
Sean W. Morefield - Champaign IL, US
Vincent F. Hock - Mahomet IL, US
Victor H. Kelly - West Chester PA, US
John M. Carlyle - Yardley PA, US
International Classification:
G01N 29/07, G01H 5/00
US Classification:
73597, 73596
Abstract:
A device and method to nondestructively measure bulk stress in a member by employing an acoustic source, preferably an ultrasonic source, a processor, and a uniquely configured acoustic sensor package. The sensor package is configured to transmit both a longitudinal wave signal and a shear wave signal into the member. The processor is configured to capture reflections of the two impressed signals along a principal stress axis of the member and calculate the roundtrip time of the two signals. Knowing the length of the member along a principal stress axis, from the roundtrip times of the two signals, two velocities are calculated. By employing an equation that calculates bulk stress as a function of these shear and longitudinal wave velocities, a measure of bulk stress is calculated via the processor. The device measures bulk stress of a member that offers limited access in its permanent installation, such as dam reinforcements.