JPS5629157A - Discriminator for flaw of internal and external surfaces - Google Patents
Discriminator for flaw of internal and external surfacesInfo
- Publication number
- JPS5629157A JPS5629157A JP10461979A JP10461979A JPS5629157A JP S5629157 A JPS5629157 A JP S5629157A JP 10461979 A JP10461979 A JP 10461979A JP 10461979 A JP10461979 A JP 10461979A JP S5629157 A JPS5629157 A JP S5629157A
- Authority
- JP
- Japan
- Prior art keywords
- flaw
- output
- outer surfaces
- amplifiers
- signals
- 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
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
PURPOSE: To perform the discrimination with high accuracy and in a short time, by discriminating the flaw of inner and outer surfaces for the sensor output with the degree of attenuation at high-and low-pass filter circuit taking the attenuation of the attenuator circuit as the reference.
CONSTITUTION: The high-and low-pass filter circuits 10, 14 produce the outputs B, D attenuating the flaw signal of inner and outer surfaces of the sensor output A, and the peak hold circuits 12, 16 receiving them hold after detecting the respective peak value and produce the outputs F, H of the waveform suitable for the comparison at the differential amplifiers 30, 32. The attenuator circuit 18 attenuates the flaw signals of inner and outer surfaces to be the output C. The peak detector 20 produces the output E rapidly fallen with this output, and this is constituted into the output G of the waveform suitable for the comparison at the amplifiers 30, 32 by the hold circuit 22. Accordingly, at the amplifiers 30, 32, by comparing the signals F, H and the signal G, the flaw signals for inner and outer surfaces can be judged with high accuracy and in a short time.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10461979A JPS5836305B2 (en) | 1979-08-17 | 1979-08-17 | Internal/external surface flaw discrimination device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10461979A JPS5836305B2 (en) | 1979-08-17 | 1979-08-17 | Internal/external surface flaw discrimination device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5629157A true JPS5629157A (en) | 1981-03-23 |
| JPS5836305B2 JPS5836305B2 (en) | 1983-08-08 |
Family
ID=14385448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10461979A Expired JPS5836305B2 (en) | 1979-08-17 | 1979-08-17 | Internal/external surface flaw discrimination device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5836305B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0237307U (en) * | 1989-04-27 | 1990-03-12 |
-
1979
- 1979-08-17 JP JP10461979A patent/JPS5836305B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5836305B2 (en) | 1983-08-08 |
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