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Testing of concrete by laser ablation

United States Patent

*** EXPIRED ***
5,592,283
January 7, 1997
View the Complete Patent at the US Patent & Trademark Office
Pacific Northwest National Laboratory - Visit the Technology Commercialization Program Website
A method of testing concrete in a structure in situ, by: directing a succession of pulses of laser radiation at a point on the structure so that each pulse effects removal of a quantity of concrete and transfers energy to the concrete; detecting a characteristic of energy which has been transferred to the concrete; determining, separately from the detecting step, the total quantity of concrete removed by the succession of pulses; and calculating a property of the concrete on the basis of the detected energy characteristic and the determined total quantity of concrete removed.
Flesher; Dann J. (Benton City, WA), Becker; David L. (Kennewick, WA), Beem; William L. (Kennewick, WA), Berry; Tommy C. (Kennewick, WA), Cannon; N. Scott (Kennewick, WA)
Westinghouse Hanford Company (Richland, WA)
08/ 415,842
April 3, 1995
ORIGIN OF THE INVENTION This invention was conceived or first reduced to practice in the course of, or under Contract Number DE-ACO6-87RL10930 between the Westinghouse Hanford Company and the United States Government, represented by the Department of Energy. The United States Government may have rights in this invention.