METHOD AND DEVICE FOR DIAGNOSING CORROSION OF ANCHOR BOLT

摘要

PROBLEM TO BE SOLVED: To easily and safely diagnosing an initial stage of corrosion by an ultrasonic flaw detection method using a normal probe in a short time. SOLUTION: The ultrasonic normal probe is set on the upper surface 3" of the top of an anchor bolt 3 planted in a basement, ultrasonic wave is supplied from the probe 11 to the bolt 3 obliquely to the axial center of the bolt 3 so that the wave reflects near a basement surface having screw groove of the bolt 3, and a corrosion state near the basement surface of the bolt is diagnosed based on a deficit of a peak occurring every thread of the reflected wave received by the probe 11. COPYRIGHT: (C)2004,JPO