| 摘要 |
PROBLEM TO BE SOLVED: To provide a flaw detection method of a structure, which remotely, easily and certainly detects the flaw such as a surface crack or the like of a large-scaled structure on which a vehicle causing moving load runs by a simple apparatus constitution without establishing a foothold, and also without requiring a heating means such as an infrared irradiator or the like and a loading means for applying a load to the structure such as an exciting device or the like. SOLUTION: In detecting the flaw of the structure 4 on which the vehicle 7 causing moving load runs, an infrared camera 9 is installed on the vehicle 7 to photograph the structure 4, wherein a stress variation is caused by the running of the vehicle 7, is photographed by the infrared camera 9 and the variation of the surface temperature distribution of the structure 4 is measured as a heat image to detect the flaw present in the structure. COPYRIGHT: (C)2008,JPO&INPIT
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