JPS5495288A - Electromagnetic ultrasonic generation - Google Patents
Electromagnetic ultrasonic generationInfo
- Publication number
- JPS5495288A JPS5495288A JP110178A JP110178A JPS5495288A JP S5495288 A JPS5495288 A JP S5495288A JP 110178 A JP110178 A JP 110178A JP 110178 A JP110178 A JP 110178A JP S5495288 A JPS5495288 A JP S5495288A
- Authority
- JP
- Japan
- Prior art keywords
- conductive material
- appears
- waveform
- electromagnetic ultrasonic
- display device
- 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
Landscapes
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
PURPOSE: To detect the internal defects of conductive material by providing a coil for generating ultrasonic wave for flowing high frequency pulse currents near the surface of the conductive material.
CONSTITUTION: When the electromagnetic ultrasonic waves having been generated arrive at the other surface or inside defect 23 of a conductive material 1, they are reflected and return in the derection of the arrow 24. When the reflected electromagnetic ultrasonic waves arrive near the surface of the conductive material 1, vibrating force 25 is produced and as a result of its mutual action with a magnetic field 10, an eddy current 26 is produced by Fleming's right-hand rule. The eddy current 26 is detected with a detecting coil 7 and the waveform thereof is displayed in a display device 28. In the display device 28, an initial pulse waveform 29 appears, then an internal defect 30 appears, thence the bottom waveform 31 from the bottom S appears.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP110178A JPS5495288A (en) | 1978-01-11 | 1978-01-11 | Electromagnetic ultrasonic generation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP110178A JPS5495288A (en) | 1978-01-11 | 1978-01-11 | Electromagnetic ultrasonic generation |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5495288A true JPS5495288A (en) | 1979-07-27 |
JPS6145774B2 JPS6145774B2 (en) | 1986-10-09 |
Family
ID=11492085
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP110178A Granted JPS5495288A (en) | 1978-01-11 | 1978-01-11 | Electromagnetic ultrasonic generation |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5495288A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57116822A (en) * | 1981-01-13 | 1982-07-21 | Nec Corp | Ground surveying instrument |
JPH01146213U (en) * | 1988-03-30 | 1989-10-09 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5024713A (en) * | 1973-07-04 | 1975-03-17 | ||
JPS5162304A (en) * | 1974-11-29 | 1976-05-29 | Hitachi Ltd | TEISOON JUDODENDOKI |
-
1978
- 1978-01-11 JP JP110178A patent/JPS5495288A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5024713A (en) * | 1973-07-04 | 1975-03-17 | ||
JPS5162304A (en) * | 1974-11-29 | 1976-05-29 | Hitachi Ltd | TEISOON JUDODENDOKI |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57116822A (en) * | 1981-01-13 | 1982-07-21 | Nec Corp | Ground surveying instrument |
JPH01146213U (en) * | 1988-03-30 | 1989-10-09 |
Also Published As
Publication number | Publication date |
---|---|
JPS6145774B2 (en) | 1986-10-09 |
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