METHOD AND APPARATUS FOR INSPECTION OF WELDING OF TANK STEEL PLATE

PROBLEM TO BE SOLVED: To provide a method and an apparatus wherein a weld part and its thermal influence part can be inspected from the upper part of a coating on the surface of a tank steel plate. SOLUTION: The method and the apparatus are constituted in such a way that longitudinal cracks 18a, 18b...

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Bibliographische Detailangaben
Hauptverfasser:	FUKUNAGA TATSUYA, YASUNAGA MOTONORI, HAGA HIROYUKI, NOJIRI KAZUHIRO, KAJIKI RYOTA, SATO NOBUYOSHI, NISHIMURA YUJI, KIYOTA FUMINORI
Format:	Patent
Sprache:	eng
Schlagworte:	INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PHYSICS TESTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method and an apparatus wherein a weld part and its thermal influence part can be inspected from the upper part of a coating on the surface of a tank steel plate. SOLUTION: The method and the apparatus are constituted in such a way that longitudinal cracks 18a, 18b in the direction of a weld bead 18 and a transversal crack 18c in a direction crossing the weld bead 18 are flaw-detected by a creeping wave method using three ultrasonic probes 3.