Title:
SOFTENED STRUCTURE DETECTING METHOD
Document Type and Number:
WIPO Patent Application WO/2021/210530
Kind Code:
A1
Abstract:
This softened structure detecting method for detecting a softened structure within an inspection target of a metal member by means of ultrasound flaw detection includes: a setting step of setting an assumed particle size of crystal grains forming the softened structure; a determining step of determining a set frequency, which is the frequency of ultrasonic waves used for the ultrasound flaw detection, in such a way as to satisfy an ultrasonic wave condition defining a relationship between the assumed particle size and the set frequency; a flaw detecting step of executing ultrasound flaw detection with respect to the inspection target, by means of ultrasonic waves having the set frequency; and an assessing step of assessing the presence or absence of a softened structure in the inspection target on the basis of results obtained by executing the ultrasound flaw detection.
More Like This:
| WO/2014/198424 | SAFT ANALYSIS OF DEFECTS CLOSE TO THE SURFACE |
| JPS57141550 | ULTRASONIC FLAW DETECTOR |
| JPH07270386 | ULTRASONIC MICROSCOPE |
Inventors:
HAYASHI KYOHEI (JP)
Application Number:
PCT/JP2021/015157
Publication Date:
October 21, 2021
Filing Date:
April 12, 2021
Export Citation:
Assignee:
MITSUBISHI POWER LTD (JP)
International Classes:
G01N29/06; G01N29/07; G01N29/11; G01N29/46
Domestic Patent References:
| WO2020041891A1 | 2020-03-05 |
Foreign References:
| JP2018205033A | 2018-12-27 | |||
| JP2012173217A | 2012-09-10 | |||
| JP2000111532A | 2000-04-21 | |||
| JP2015121489A | 2015-07-02 | |||
| JPH07190995A | 1995-07-28 | |||
| JPH0634611A | 1994-02-10 |
Attorney, Agent or Firm:
SEISHIN IP PATENT FIRM, P.C. (JP)
Download PDF: