JPS5689053A - Electromagnetic ultrasonic inspector - Google Patents
Electromagnetic ultrasonic inspectorInfo
- Publication number
- JPS5689053A JPS5689053A JP16562279A JP16562279A JPS5689053A JP S5689053 A JPS5689053 A JP S5689053A JP 16562279 A JP16562279 A JP 16562279A JP 16562279 A JP16562279 A JP 16562279A JP S5689053 A JPS5689053 A JP S5689053A
- Authority
- JP
- Japan
- Prior art keywords
- amplifier
- elements
- difference signal
- detection
- signal
- 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
Abstract
PURPOSE: To enable to detect the defect of all positions, by detecting leakage magnetic flux caused by a crack which exists in the inner part of the body to be inspected by a difference signal obtained from a pair of magnetism detection element which is provided in the E-shaped core of an electromagnet.
CONSTITUTION: A pair of the detection elements 9A, 9B are provided in the position to be the density of magnetic flux of vertical direction of the surface of the material to be inspected 2 in the E-shaped core 1 of the electromagnet 10 minimum. Then, the differential amplifier 10 amplifying the difference signal of detection signal which is obtained from the elements 9A, 9B, is provided and moreover, the switching means 11 switching the output signal of the amplifier 10 and that of the amplifier 7 amplifying the detection signal of transmission-reception coil, is provided in front of the display means 8. Thus, the outputs of the elements 9A, 9B are inputted in the amplifier 10 and the existence of crack is judged by confirming the difference signal.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16562279A JPS5689053A (en) | 1979-12-21 | 1979-12-21 | Electromagnetic ultrasonic inspector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16562279A JPS5689053A (en) | 1979-12-21 | 1979-12-21 | Electromagnetic ultrasonic inspector |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5689053A true JPS5689053A (en) | 1981-07-20 |
JPS6217704B2 JPS6217704B2 (en) | 1987-04-18 |
Family
ID=15815852
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16562279A Granted JPS5689053A (en) | 1979-12-21 | 1979-12-21 | Electromagnetic ultrasonic inspector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5689053A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6428707U (en) * | 1987-08-12 | 1989-02-20 | ||
JPH06272866A (en) * | 1993-03-16 | 1994-09-27 | Fuji Mc:Kk | Composite type heating device |
-
1979
- 1979-12-21 JP JP16562279A patent/JPS5689053A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6217704B2 (en) | 1987-04-18 |
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