JPS5686351A - Ultrasonic flaw detector - Google Patents
Ultrasonic flaw detectorInfo
- Publication number
- JPS5686351A JPS5686351A JP16261179A JP16261179A JPS5686351A JP S5686351 A JPS5686351 A JP S5686351A JP 16261179 A JP16261179 A JP 16261179A JP 16261179 A JP16261179 A JP 16261179A JP S5686351 A JPS5686351 A JP S5686351A
- Authority
- JP
- Japan
- Prior art keywords
- defect
- discriminators
- frequency
- reflected
- waves
- 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 exclude the pseudo reflected wave and detect an accurate position of the defect, by oscillating the ultrasonic waves in the different two directions and detecting the defect which is equidistant from both directions.
CONSTITUTION: The pulse-type high-frequency signals oscillated from the flaw detector main body 1 are turned into the ultrasonic waves of different frequency bands via the probes 3 and 3, and these ultrasnoic waves propagate into the material A the flaws of which are detected. And if the material A has the defect B, each ultrasonic wave is reflected by the effect B. This reflected wave is received at the probes 3 and 3 each and transmitted to the frequency discriminators 4 and 4 after converted into the high-frequency signals. The discriminators 4 and 4 discriminate only the reflected waves of the ultrasonic waves which are oscillated from the corresponding probe, and the high-frequency signal is sent to the simultaneous measuring device 5. And the signal passes through the device 5 only when the signals are transmitted simultaneously from both discriminators 4 and 4 to be displayed at the display part 6 in the form of the defective reflected wave. In such way, the position of the defect can be detected accurately.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16261179A JPS5686351A (en) | 1979-12-14 | 1979-12-14 | Ultrasonic flaw detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16261179A JPS5686351A (en) | 1979-12-14 | 1979-12-14 | Ultrasonic flaw detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5686351A true JPS5686351A (en) | 1981-07-14 |
Family
ID=15757881
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16261179A Pending JPS5686351A (en) | 1979-12-14 | 1979-12-14 | Ultrasonic flaw detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5686351A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58131560A (en) * | 1982-02-01 | 1983-08-05 | Nippon Steel Corp | Method and apparatus for ultrasonic flaw detection |
-
1979
- 1979-12-14 JP JP16261179A patent/JPS5686351A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58131560A (en) * | 1982-02-01 | 1983-08-05 | Nippon Steel Corp | Method and apparatus for ultrasonic flaw detection |
JPH0244027B2 (en) * | 1982-02-01 | 1990-10-02 | Nippon Steel Corp |
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