Measuring and testing – Specimen stress or strain – or testing by stress or strain... – Threaded fastener stress
Patent
1991-11-25
1993-04-27
Williams, Hezron E.
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
Threaded fastener stress
73597, 29 2535, 20419218, 20419215, 427124, F16B 3102
Patent
active
052051765
ABSTRACT:
A load indicating cell and a method of manufacturing a load indicating cell are disclosed and claimed. An ultrasonic transducer, grown on one surface of a load bearing member, such as a fastener, is used to determine the length, stress or other tensile load dependent characteristic of the member using ultrasonic techniques.
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"Preparation and Properties of rf Sputtered Films of ZnO as an Ultrasonic Transducer" by R. Inaba, T. Ishiguro and N. Mikoshiba, Japanese Journal of Applied Physics, vol. 10, No. 11 (Nov. 1971) pp. 1493-1496.
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F. Rollins, Jr., Fastener Load Analysis Method, NASA Contractor Report (CR)-61354 (Apr. 2, 1971).
Finley Rose M.
Ultrafast, Inc.
Williams Hezron E.
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