Measuring strain in metals through paint

Efrain A. Mandracchia; David A. Crawford

doi:10.1117/12.238848

22 April 1996 Measuring strain in metals through paint

Efrain A. Mandracchia, David A. Crawford

Proceedings Volume 2719, Smart Structures and Materials 1996: Smart Systems for Bridges, Structures, and Highways; (1996) https://doi.org/10.1117/12.238848
Event: 1996 Symposium on Smart Structures and Materials, 1996, San Diego, CA, United States

Abstract

Direct strain measurement using strain gauges, in the assessment of structural integrity, has been impeded for years by the need for extraordinary surface preparation. New laws and regulations concerning hazardous materials and lead paint removal are likely to further restrict the use of resistance strain gauges. A new acoustic strain measurement system has been tested in the lab to demonstrate the ability of the system to measure strain through paint. These tests confirm the relationship between liftoff (the distance between the transmitter and receiver surfaces and the metal-under-test) and transducer performance and demonstrate that strain can be measured through paint using ultrasonic techniques.

Citation Download Citation

Efrain A. Mandracchia and David A. Crawford "Measuring strain in metals through paint", Proc. SPIE 2719, Smart Structures and Materials 1996: Smart Systems for Bridges, Structures, and Highways, (22 April 1996); https://doi.org/10.1117/12.238848

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