13 November 1996 Application of coherent laser radar for bridge evaluation
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Abstract
The coherent laser radar bridge measurement system (CLBM) developed by Coleman Research Corporation provides unique non-contact capability to measure dead load contours, live load deflections, and modal frequencies. There data are vital for non-destructive evaluation of structures such as bridges. The CLBM is programmable to make these measurements at numerous predetermined points on the structure automatically. The CLBM makes its measurements at standoff distances up to 100 feet and no instrumentation needs to be mounted on the structure. This paper presents a summary of the system and compares field data obtained using the CLBM with similar data obtained using traditional contact displacement and accelerometer instrumentation.
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Robert B. Clark, Robert B. Clark, Phillip G. Gallman, Phillip G. Gallman, Anthony R. Slotwinski, Anthony R. Slotwinski, } "Application of coherent laser radar for bridge evaluation", Proc. SPIE 2946, Nondestructive Evaluation of Bridges and Highways, (13 November 1996); doi: 10.1117/12.259143; https://doi.org/10.1117/12.259143
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