JPS6413451A - Electromagnetic ultrasonic flaw detector - Google Patents
Electromagnetic ultrasonic flaw detectorInfo
- Publication number
- JPS6413451A JPS6413451A JP62168721A JP16872187A JPS6413451A JP S6413451 A JPS6413451 A JP S6413451A JP 62168721 A JP62168721 A JP 62168721A JP 16872187 A JP16872187 A JP 16872187A JP S6413451 A JPS6413451 A JP S6413451A
- Authority
- JP
- Japan
- Prior art keywords
- coil
- excitation coil
- vessel
- specimen
- ultrasonic flaw
- 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 Ultrasonic Waves (AREA)
Abstract
PURPOSE:To provide an electromagnetic ultrasonic flaw detector having a good SN by using a superconductive excitation coil as an excitation coil, housing this superconductive excitation coil into a cooling vessel and cooling the coil. CONSTITUTION:The superconductive excitation coil consisting of a high-temp. superconducting material of an yttrium system, etc., is housed in the cooling vessel 3. A coolant 2 such as liquid nitrogen is supplied from a coolant supplying device 4 to the vessel 3 to cool the coil 1. DC current is supplied from a power supply 5 to the coil 1. A transmission and reception coil 6 is provided under the vessel 3 and pulse currents are sent from a pulse generator 7 to the coil to generate pulses by which eddy current is generated in a specimen 10. The stress wave reflected by the flaw of the specimen is converted to a current signal. The current signal is amplified 9 and a reception signal is displayed by a display device 9. Since the high magnetic flux density is thus generated in the specimen by providing the superconductive excitation coil the SN ratio of the electromagnetic ultrasonic flaw detector is improved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62168721A JPS6413451A (en) | 1987-07-08 | 1987-07-08 | Electromagnetic ultrasonic flaw detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62168721A JPS6413451A (en) | 1987-07-08 | 1987-07-08 | Electromagnetic ultrasonic flaw detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6413451A true JPS6413451A (en) | 1989-01-18 |
Family
ID=15873205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62168721A Pending JPS6413451A (en) | 1987-07-08 | 1987-07-08 | Electromagnetic ultrasonic flaw detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6413451A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012088092A (en) * | 2010-10-16 | 2012-05-10 | Japanese Super-Conductivity Organization Co Ltd | Vibration generating device |
| CN113155977A (en) * | 2021-05-24 | 2021-07-23 | 哈尔滨工业大学 | Electromagnetic ultrasonic surface wave transducer for high-temperature metal detection and detection method |
-
1987
- 1987-07-08 JP JP62168721A patent/JPS6413451A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012088092A (en) * | 2010-10-16 | 2012-05-10 | Japanese Super-Conductivity Organization Co Ltd | Vibration generating device |
| CN113155977A (en) * | 2021-05-24 | 2021-07-23 | 哈尔滨工业大学 | Electromagnetic ultrasonic surface wave transducer for high-temperature metal detection and detection method |
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