JPS5595861A - Detector for ae wave generating position - Google Patents
Detector for ae wave generating positionInfo
- Publication number
- JPS5595861A JPS5595861A JP354079A JP354079A JPS5595861A JP S5595861 A JPS5595861 A JP S5595861A JP 354079 A JP354079 A JP 354079A JP 354079 A JP354079 A JP 354079A JP S5595861 A JPS5595861 A JP S5595861A
- Authority
- JP
- Japan
- Prior art keywords
- wave
- signal
- sensors
- generating position
- correlation
- 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)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
PURPOSE: To avoid the mistaken detection which is caused by the noise signal by giving checking to the correlation relating the duration of each signal received by several AE sensors and then blocking the detection for the generating position of the AE wave in case the correlation mentioned above is weak.
CONSTITUTION: The AE wave generated on tested object 1 is received by AE sensors 2a and 2b each. The arrival time difference and the arrival order of the AE wave signals to sensors 2a and 2b are detected by counter 4 and arrival order deciding unit 5 to be then memorized in register 7. Signal process circuit 8 detects the generating position of the AE wave. Both the AE wave signal and the noise signal are supplied to correlation circuit 10, and comparator 14 delivers the reset signal in case the correlation is weak for the output between sensors 2a and 2b. With this reset signal, each information memorized in register 7 is reset to block the detection for the generating position of the AE wave.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP354079A JPS5595861A (en) | 1979-01-16 | 1979-01-16 | Detector for ae wave generating position |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP354079A JPS5595861A (en) | 1979-01-16 | 1979-01-16 | Detector for ae wave generating position |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5595861A true JPS5595861A (en) | 1980-07-21 |
Family
ID=11560236
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP354079A Pending JPS5595861A (en) | 1979-01-16 | 1979-01-16 | Detector for ae wave generating position |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5595861A (en) |
-
1979
- 1979-01-16 JP JP354079A patent/JPS5595861A/en active Pending
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