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Ultrasonic inspection device and ultrasonic inspection method

An inspection device and inspection method technology, which are applied in the directions of using ultrasonic/sonic/infrasonic waves, using sonic/ultrasonic/infrasonic waves to analyze solids, and using sonic/ultrasonic/infrasonic waves for material analysis, etc. Cumbersome and other problems, to achieve the effect of simple detection

Active Publication Date: 2018-01-02
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, there are problems such as cumbersome ultrasonic inspection methods and complicated ultrasonic inspection devices.

Method used

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  • Ultrasonic inspection device and ultrasonic inspection method
  • Ultrasonic inspection device and ultrasonic inspection method
  • Ultrasonic inspection device and ultrasonic inspection method

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Embodiment Construction

[0014] Embodiments are illustrated below with reference to the drawings. In addition, in each drawing, the same code|symbol is attached|subjected to the same component, and detailed description is abbreviate|omitted suitably.

[0015] figure 1 It is a schematic diagram for illustrating the ultrasonic examination apparatus 1 of this embodiment.

[0016] First, the inspection object 100 will be described.

[0017] Such as figure 1 As shown, the inspection object 100 has a structure in which a member 101 (corresponding to an example of a first member) and a member 102 (corresponding to an example of a second member) are overlapped by welding. For example, it is a structure in which the member 101 and the member 102 are plug welded or slot welded.

[0018] The welded portion is indicated as a welded portion 103 .

[0019] In addition, parts on the side that detects ultrasonic vibrations (in figure 1 The illustrated case is part 102) on the side where ultrasonic vibrations ar...

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Abstract

An ultrasonic inspection device includes: a vibration generating section that irradiates laser beam onto a first member to generate ultrasonic vibration; a detecting section that detects the ultrasonic vibration propagated from the first to a second members via a welded portion; and an analyzing section that analyzes the propagated ultrasonic vibration detected by the detecting section. The analyzing section obtains at least one of frequency and wavelength of the ultrasonic vibration detected by the detecting section upon when a displacement in the second member in a thickness direction becomes maximum. The analyzing section obtains a cross sectional dimension of the welded portion from a correlated relationship of the cross sectional dimension of the welded portion obtained in advance at a position on a surface of the second member on the first member side and the at least one of the frequency and wavelength of the ultrasonic vibration.

Description

[0001] This application claims priority based on Japanese Patent Application No. 2013-061142 (filing date: March 22, 2013). This application incorporates the entire content of this application by reference. technical field [0002] The present invention relates to an ultrasonic inspection device and an ultrasonic inspection method. Background technique [0003] There is an ultrasonic inspection method in which an inspection object is irradiated with laser light to generate ultrasonic vibrations in the inspection object, and the internal state of the inspection object is inspected by analyzing the ultrasonic vibrations propagating through the inspection object. [0004] Furthermore, a technique has been proposed in which the frequency at which the base material resonates is obtained in advance, the position where ultrasonic vibration is generated and the position where ultrasonic vibration is detected is scanned, and a frequency lower than the frequency at which the base mate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N29/12G01B17/00
CPCG01N29/12G01N29/2418G01N29/46G01N2291/267
Inventor 森冈友子冈田直忠
Owner KK TOSHIBA