WELDED JOINT ULTRASONIC FLAW DETECTING METHOD AND WELDED JOINT ULTRASONIC FLAW DETECTOR

PROBLEM TO BE SOLVED: To provide a method for detecting flaws of a welded joint using supersonic waves, the method allowing a precise detection of flaws involved with ultrasound diffusion or attenuation in a welded joint using a high nickel alloy.MEANS FOR SOLVING THE PROBLEM: There is provided an u...

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Hauptverfasser:	MUKONO HIDEYUKI, NISHIGAMI HIROYUKI, YAMADA YASUHIRO, FUJISAKI SUSUMU, YAMASHITA MASATERU, MATSUMARU SHINJI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PHYSICS TESTING
Online-Zugang:	Volltext bestellen
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Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method for detecting flaws of a welded joint using supersonic waves, the method allowing a precise detection of flaws involved with ultrasound diffusion or attenuation in a welded joint using a high nickel alloy.MEANS FOR SOLVING THE PROBLEM: There is provided an ultrasonic flaw detecting method for detecting flaws of a welded joint by ultrasonic waves, characterized by using a combination of at least two of a creeping wave technique, a longitudinal wave angle beam technique, a round trip technique, and a transverse wave angle beam technique for the flaw detection.SELECTED DRAWING: Figure 1 【課題】超音波を用いた溶接継手の欠陥の検出方法に関し、高ニッケル合金を用いた溶接継手において、超音波の拡散や減衰の問題が多いが、その場合の欠陥の検出を高精度で行うことを可能とすること。【解決方法】超音波を用いて溶接継手の欠陥を探傷する超音波探傷法であって、クリーピング波法、縦波斜角法、ラウンドトリップ法、横波斜角法のうち、少なくとも２種の組合せによって探傷を行うことを特徴とする超音波探傷方法。【選択図】図１