Abstract
Fatigue cracks of steel structures, which may bring significant risk on bridge safety, occur at near welded lines and at the edge of sole plate. Early detection and repair of them can be an important key and research have eagerly been conducted to develop easy detection techniques of them. Magnetic particle flaw detection tests, penetrant flaw detection tests, ultrasonic flaw detection tests, etc. have been used as conventional detection methods for fatigue cracks in steel structures, but these crack detection methods require a removal of the coating film, so that the efficient inspection cannot be performed. To achieve an easy and efficient inspection, infrared thermography images are used in this research as a method for detecting fatigue cracks in steel structures without the need to remove the coating film.
Published Version
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