JPS55126853A - Electromagnetic induction flaw detecting method - Google Patents
Electromagnetic induction flaw detecting methodInfo
- Publication number
- JPS55126853A JPS55126853A JP3439879A JP3439879A JPS55126853A JP S55126853 A JPS55126853 A JP S55126853A JP 3439879 A JP3439879 A JP 3439879A JP 3439879 A JP3439879 A JP 3439879A JP S55126853 A JPS55126853 A JP S55126853A
- Authority
- JP
- Japan
- Prior art keywords
- phase
- flaw
- signal
- electromagnetic induction
- detecting method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
PURPOSE: To make it possible to discriminate even the kind of a flaw by making use of a difference in the phase angle of a signal, induced depending upon whether the flaw exists, according to the kind of the flaw.
CONSTITUTION: Between coil 2 on the oscillator 1 side and search coil 4 of balancing unit 3, sample 5 such as a metal wire material is made to run. When sample 5 has a flaw, balancing unit 3 loses its balance to output an out-of-phase signal. Phase deciding circuit 13 makes a phase decision on the out-of-phase signal and reference signal to extract a signal corresponding to the phase difference, and then records it by recorder 10. Consequently, the kind of the flaw can be discriminated by referring the output level to relations between phase angles and the kinds of flaws.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3439879A JPS55126853A (en) | 1979-03-26 | 1979-03-26 | Electromagnetic induction flaw detecting method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3439879A JPS55126853A (en) | 1979-03-26 | 1979-03-26 | Electromagnetic induction flaw detecting method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55126853A true JPS55126853A (en) | 1980-10-01 |
Family
ID=12413071
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3439879A Pending JPS55126853A (en) | 1979-03-26 | 1979-03-26 | Electromagnetic induction flaw detecting method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55126853A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103728368A (en) * | 2012-10-14 | 2014-04-16 | 四川澄观电子技术有限公司 | Crack detector used for rail parts |
WO2020246131A1 (en) * | 2019-06-05 | 2020-12-10 | 株式会社島津製作所 | Wire rope examination system and wire rope examination method |
-
1979
- 1979-03-26 JP JP3439879A patent/JPS55126853A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103728368A (en) * | 2012-10-14 | 2014-04-16 | 四川澄观电子技术有限公司 | Crack detector used for rail parts |
WO2020246131A1 (en) * | 2019-06-05 | 2020-12-10 | 株式会社島津製作所 | Wire rope examination system and wire rope examination method |
JPWO2020246131A1 (en) * | 2019-06-05 | 2021-11-04 | 株式会社島津製作所 | Wire rope inspection system and wire rope inspection method |
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