JPS5663254A - Noise discrimination method in ultrasonic flaw detection - Google Patents
Noise discrimination method in ultrasonic flaw detectionInfo
- Publication number
- JPS5663254A JPS5663254A JP13929979A JP13929979A JPS5663254A JP S5663254 A JPS5663254 A JP S5663254A JP 13929979 A JP13929979 A JP 13929979A JP 13929979 A JP13929979 A JP 13929979A JP S5663254 A JPS5663254 A JP S5663254A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- flaw detection
- subject
- supplied
- probe
- 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 prevent an erroneous recognition due to the multiplex echo of the bubbles or foreign matters in the liquid, by erasing the flaw detection signal of the subject at the moment when the signals caused by the bubbles or foreign matters in the liquid are detected.
CONSTITUTION: The ultrasonic wave 7 is transmitted to the subject 3 from the probe 1 and via the water 2, and the reflected wave is taken out via the probe 1 and then amplified. The defect signal is extracted and recorded, and the reflected wave is displayed on the cathode-ray tube when necessary. Then the flaw detection signal 17 of the subject 3 as well as the flaw detection signal 16 in the ultrasonic wave irradiation region 1A between the probe 1 and the subject 3 are taken out individually and then supplied to the AND gate 20, and the output of the gate 20 plus the signal 17 are supplied to the subtractor 21. The subtractor 21 transmits the defect signal 22 directly in case only the signal 17 is supplied, and the signal 17 is erased when the signal 16 is supplied along with the signal 17, and the signal 22 is not transmitted.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13929979A JPS5663254A (en) | 1979-10-30 | 1979-10-30 | Noise discrimination method in ultrasonic flaw detection |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13929979A JPS5663254A (en) | 1979-10-30 | 1979-10-30 | Noise discrimination method in ultrasonic flaw detection |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5663254A true JPS5663254A (en) | 1981-05-29 |
Family
ID=15242039
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13929979A Pending JPS5663254A (en) | 1979-10-30 | 1979-10-30 | Noise discrimination method in ultrasonic flaw detection |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5663254A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58214852A (en) * | 1982-06-08 | 1983-12-14 | Mitsubishi Electric Corp | Ultrasonic flaw detecting apparatus |
-
1979
- 1979-10-30 JP JP13929979A patent/JPS5663254A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58214852A (en) * | 1982-06-08 | 1983-12-14 | Mitsubishi Electric Corp | Ultrasonic flaw detecting apparatus |
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