Method of detecting defects of a structure

Details Method of detecting defects of a structure Method of detecting defects of a structure

1996-07-31

1998-10-06

Gutierrez, Diego F.F.

Thermal measuring and testing

Leak or flaw detection

374121, 374 5, G01N 2572

Patent

active

058167030

ABSTRACT:
A method of detecting a defect on the surface of a structure using an infrared radiometric thermometer. It is determined that there is a lifting defect at a region of the surface if the region has a temperature difference of 0.3.degree. C. or more in comparison with a surrounding region and has an area of 200 cm.sup.2 or more. The temperature of the surface of the structure is obtained using the infrared radiometric thermometer in a period of time from 19:00 p.m. on a day when it is clear at least in the daytime to 4:30 a.m. on the next day.

REFERENCES:
patent: 3504524 (1970-04-01), Maley
patent: 4872762 (1989-10-01), Koshihara et al.

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