ULTRASONIC FLAW DETECTION DEVICE, ULTRASONIC FLAW DETECTION METHOD, AND PRODUCT MANUFACTURING METHOD

• Main Authors: OTSUKA MASARU, YAMAMOTO SETSU, CHIHOSHI ATSUSHI, HOSHI TAKESHI, SUGAWARA AZUSA, DOBASHI KENTARO
• Format: Patent
• Language: English; Japanese
• Published: 15.11.2018
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

PROBLEM TO BE SOLVED: To provide an ultrasonic flaw detection technique for improving spatial resolution in defect detection, and also to provide a product manufacturing method using the same.SOLUTION: An ultrasonic flaw detection device 10 includes: an array probe 34 equipped with multiple piezo-electric elements 33 respectively capable of transmitting/receiving an ultrasonic wave with respect to an inspection object 35; an element group definition section 16 for defining an element group 13 and calculating a propagation route of an ultrasonic beam; a delay time calculation section 11 for calculating respective delay times 21 of the piezo-electric elements 33 constituting the element group 13; and a synthesis signal generation section 31 for allowing detection signals 25 to be synthesized based on the delay times 21 and to be generated as a synthesis signal concerning ultrasonic beams having propagation routes.SELECTED DRAWING: Figure 1 【課題】欠陥検出の空間分解能を向上させる超音波探傷技術およびこれを用いた製品の製造方法を提供する。【解決手段】音波探傷装置１０において、検査対象３５に対してそれぞれ超音波を送受信可能な複数の圧電素子３３を備えるアレイプローブ３４と、素子群１３を定義し超音波ビームの伝搬経路を演算する素子群定義部１６と、素子群１３を構成する圧電素子３３のそれぞれの遅延時間２１を計算する遅延時間計算部１１と、検出信号２５を遅延時間２１に基づいて合成して伝搬経路を有する超音波ビームについての合成信号として生成する合成信号生成部３１と、を備える。【選択図】 図１