JPS639182B2 - - Google Patents
Info
- Publication number
- JPS639182B2 JPS639182B2 JP8733079A JP8733079A JPS639182B2 JP S639182 B2 JPS639182 B2 JP S639182B2 JP 8733079 A JP8733079 A JP 8733079A JP 8733079 A JP8733079 A JP 8733079A JP S639182 B2 JPS639182 B2 JP S639182B2
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- current
- coil
- test
- pulse
- 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.)
- Expired
Links
- 230000005284 excitation Effects 0.000 claims description 28
- 238000012360 testing method Methods 0.000 claims description 23
- 238000007689 inspection Methods 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 12
- 238000012545 processing Methods 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 230000007547 defect Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 239000004020 conductor Substances 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000009659 non-destructive testing Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8733079A JPS5611351A (en) | 1979-07-10 | 1979-07-10 | Time division-type multifrequency eddy current |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8733079A JPS5611351A (en) | 1979-07-10 | 1979-07-10 | Time division-type multifrequency eddy current |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5611351A JPS5611351A (en) | 1981-02-04 |
JPS639182B2 true JPS639182B2 (enrdf_load_stackoverflow) | 1988-02-26 |
Family
ID=13911851
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8733079A Granted JPS5611351A (en) | 1979-07-10 | 1979-07-10 | Time division-type multifrequency eddy current |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5611351A (enrdf_load_stackoverflow) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003050234A (ja) * | 2001-08-07 | 2003-02-21 | Marktec Corp | 渦流探傷試験装置 |
JP2003050233A (ja) * | 2001-08-07 | 2003-02-21 | Marktec Corp | 渦流探傷試験方法及び渦流探傷試験装置 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59108955A (ja) * | 1982-12-13 | 1984-06-23 | Nippon Steel Corp | マルチプロ−ブコイルマルチ周波数渦流探傷装置 |
JPS59166857A (ja) * | 1983-03-11 | 1984-09-20 | Nippon Steel Corp | マルチプロ−ブ、マルチ周波数渦流探傷装置の信号処理回路 |
JPH05135246A (ja) * | 1991-11-08 | 1993-06-01 | Omron Corp | 金種別表示機能付き自動両替機 |
US7206706B2 (en) * | 2005-03-09 | 2007-04-17 | General Electric Company | Inspection method and system using multifrequency phase analysis |
-
1979
- 1979-07-10 JP JP8733079A patent/JPS5611351A/ja active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003050234A (ja) * | 2001-08-07 | 2003-02-21 | Marktec Corp | 渦流探傷試験装置 |
JP2003050233A (ja) * | 2001-08-07 | 2003-02-21 | Marktec Corp | 渦流探傷試験方法及び渦流探傷試験装置 |
Also Published As
Publication number | Publication date |
---|---|
JPS5611351A (en) | 1981-02-04 |
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