JPS56163450A - Probing coil for detecting crack by utilizing eddy current - Google Patents
Probing coil for detecting crack by utilizing eddy currentInfo
- Publication number
- JPS56163450A JPS56163450A JP6648980A JP6648980A JPS56163450A JP S56163450 A JPS56163450 A JP S56163450A JP 6648980 A JP6648980 A JP 6648980A JP 6648980 A JP6648980 A JP 6648980A JP S56163450 A JPS56163450 A JP S56163450A
- Authority
- JP
- Japan
- Prior art keywords
- coils
- winding
- detecting
- centers
- beginning
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
- G01N27/904—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents with two or more sensors
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
PURPOSE:To enhance detecting sensitivity by arranging the centers of detecting coils in the inner peripheries, which are not in the heighboring sides, of a pair of a exciting coils, and increasing the magnetic fluxes interlinked with the detecting coils. CONSTITUTION:The centers of the detecting coils 2A and 2B are shifted with respect to the centers of the exciting coils 1A and 1B. The centers of the detecting coils 2A and 2B are aligned with the inner peripheries of the exciting coils 1A and 1B. The beginning of the winding of the exciting coil 1A is connected to a high frequency power source, and the end of the winding thereof is connected to the beginning of the winding of the exciting coil 1B. The excitation is made so that the directions of the magnetic fluxes generated in the coils are the same. The beginning of the winding of the detecting coil 2A is connected to a signal output terminal, the end of the winding thereof is connected to the end of the winding of the detecting coil 2B, and the beginning of the winding thereof is connected to the ground side of the signal output terminal. In this arrangement, the eddy current density is brought to its maximum point, and the varying magnetic fluxes which are interlinked with the detecting coils can be increased.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6648980A JPS56163450A (en) | 1980-05-21 | 1980-05-21 | Probing coil for detecting crack by utilizing eddy current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6648980A JPS56163450A (en) | 1980-05-21 | 1980-05-21 | Probing coil for detecting crack by utilizing eddy current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56163450A true JPS56163450A (en) | 1981-12-16 |
Family
ID=13317254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6648980A Pending JPS56163450A (en) | 1980-05-21 | 1980-05-21 | Probing coil for detecting crack by utilizing eddy current |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56163450A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018132469A (en) * | 2017-02-17 | 2018-08-23 | 矢崎エナジーシステム株式会社 | Eddy current flaw inspection device |
| CN108872370A (en) * | 2018-07-26 | 2018-11-23 | 爱德森（厦门）电子有限公司 | A kind of householder method for assessing orthogonal eddy current sensor detection weld seam validity |
-
1980
- 1980-05-21 JP JP6648980A patent/JPS56163450A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018132469A (en) * | 2017-02-17 | 2018-08-23 | 矢崎エナジーシステム株式会社 | Eddy current flaw inspection device |
| CN108872370A (en) * | 2018-07-26 | 2018-11-23 | 爱德森（厦门）电子有限公司 | A kind of householder method for assessing orthogonal eddy current sensor detection weld seam validity |
| CN108872370B (en) * | 2018-07-26 | 2021-03-09 | 爱德森（厦门）电子有限公司 | Auxiliary method for evaluating effectiveness of orthogonal eddy current sensor for detecting weld joint |
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