JPS561348A - Ultrasonic flaw detecting apparatus - Google Patents
Ultrasonic flaw detecting apparatusInfo
- Publication number
- JPS561348A JPS561348A JP7647879A JP7647879A JPS561348A JP S561348 A JPS561348 A JP S561348A JP 7647879 A JP7647879 A JP 7647879A JP 7647879 A JP7647879 A JP 7647879A JP S561348 A JPS561348 A JP S561348A
- Authority
- JP
- Japan
- Prior art keywords
- level
- reference signal
- ultrasonic
- echo
- reflected echo
- 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 inspect flaws in a material without destruction by using a means which outputs a reference signal having a fixed time-level characteristic, and changing the reference signal at every fixed number of scanning.
CONSTITUTION: Provided is a level setting means 5 set to generate a reference signal having an echo level curve along the characteristic curve of the propagation distance in material determined by the ultrasonic wave propagation distance in material. An ultrasonic probe member 1 is placed contacting with a material M, and an ultrasonic wave is transmitted. The received ultrasonic signal is sent to a defect probe 3 to draw an ultrasonic reflected echo, which is sent to an echo level judgement means 4, in which the reflected echo is compared with the reference signal from the level setting means 5. Every a fixed number of scanning, the reference signal is changed by varying the whole level by a fixed degree, so that the comparison level with the reflected echo is varied. Thus, even a flow having a low reflected echo level is sooner or later detected and displayed, so that the judgement accuracy can be improved.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7647879A JPS561348A (en) | 1979-06-18 | 1979-06-18 | Ultrasonic flaw detecting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7647879A JPS561348A (en) | 1979-06-18 | 1979-06-18 | Ultrasonic flaw detecting apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS561348A true JPS561348A (en) | 1981-01-09 |
Family
ID=13606293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7647879A Pending JPS561348A (en) | 1979-06-18 | 1979-06-18 | Ultrasonic flaw detecting apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS561348A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007294371A (en) * | 2006-03-30 | 2007-11-08 | Anden | Sealing structure of hermetically-sealed relay, and its mounting method |
-
1979
- 1979-06-18 JP JP7647879A patent/JPS561348A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007294371A (en) * | 2006-03-30 | 2007-11-08 | Anden | Sealing structure of hermetically-sealed relay, and its mounting method |
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