JPS5760257A - Detector for magnetic foreign matter in nonmagnetic material - Google Patents
Detector for magnetic foreign matter in nonmagnetic materialInfo
- Publication number
- JPS5760257A JPS5760257A JP55136104A JP13610480A JPS5760257A JP S5760257 A JPS5760257 A JP S5760257A JP 55136104 A JP55136104 A JP 55136104A JP 13610480 A JP13610480 A JP 13610480A JP S5760257 A JPS5760257 A JP S5760257A
- Authority
- JP
- Japan
- Prior art keywords
- detecting
- noises
- copper wire
- long wavelength
- detecting coil
- 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.)
- Granted
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
- G01N27/9046—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 by analysing electrical signals
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)
- Geophysics And Detection Of Objects (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55136104A JPS5760257A (en) | 1980-09-30 | 1980-09-30 | Detector for magnetic foreign matter in nonmagnetic material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55136104A JPS5760257A (en) | 1980-09-30 | 1980-09-30 | Detector for magnetic foreign matter in nonmagnetic material |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5760257A true JPS5760257A (en) | 1982-04-12 |
JPS6236532B2 JPS6236532B2 (ja) | 1987-08-07 |
Family
ID=15167365
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55136104A Granted JPS5760257A (en) | 1980-09-30 | 1980-09-30 | Detector for magnetic foreign matter in nonmagnetic material |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5760257A (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015175639A (ja) * | 2014-03-13 | 2015-10-05 | アンリツ産機システム株式会社 | 金属検出装置 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63284811A (ja) * | 1987-05-15 | 1988-11-22 | Nec Corp | 半導体基板露光装置 |
-
1980
- 1980-09-30 JP JP55136104A patent/JPS5760257A/ja active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015175639A (ja) * | 2014-03-13 | 2015-10-05 | アンリツ産機システム株式会社 | 金属検出装置 |
Also Published As
Publication number | Publication date |
---|---|
JPS6236532B2 (ja) | 1987-08-07 |
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