JPS61581B2 - - Google Patents
Info
- Publication number
- JPS61581B2 JPS61581B2 JP52152894A JP15289477A JPS61581B2 JP S61581 B2 JPS61581 B2 JP S61581B2 JP 52152894 A JP52152894 A JP 52152894A JP 15289477 A JP15289477 A JP 15289477A JP S61581 B2 JPS61581 B2 JP S61581B2
- Authority
- JP
- Japan
- Prior art keywords
- signals
- analysis
- wave
- noise
- blind zone
- 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.)
- Expired
Links
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
PURPOSE:To achieve the improvement in the accuracy of analysis by providing blind zone circuits between a converter of ultrasonic waves to electric signals and an electric signal analytical apparatus and separating only the AE wave from the AE wave signal and other signals thereby performing analysis. CONSTITUTION:The AE wave from the measuring object 1 is detected with a detector 2 and is converted to an electric signal wave from vibration waves. The AE voltage is then amplified up to the voltage value necessary for analysis via preamplifier 3 and main amplifier part 4. At this time, blind zone circuits 15 and 16 are serially provided between the detector 2 and analysis part 5. Then if positive and negative blind voltages E+, E- are set same as noise voltages in case the noise signals do not flucturate, no noises will be outputted. Even if various kinds of input noise signals are being applied, they may be removed by connecting the blind zone circuits corresponding to the signal components as much as number of noise components in series and subsequently passing the signals therethrough. The simple circuit constitution eliminates the noise signals, makes possible analysis of only the intended signals and enables accuracy to be improved.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15289477A JPS5485784A (en) | 1977-12-21 | 1977-12-21 | Acoustic emission measureing apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15289477A JPS5485784A (en) | 1977-12-21 | 1977-12-21 | Acoustic emission measureing apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5485784A JPS5485784A (en) | 1979-07-07 |
JPS61581B2 true JPS61581B2 (en) | 1986-01-09 |
Family
ID=15550445
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15289477A Granted JPS5485784A (en) | 1977-12-21 | 1977-12-21 | Acoustic emission measureing apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5485784A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023112504A1 (en) * | 2021-12-13 | 2023-06-22 | 株式会社プロテリアル | State monitoring system and state monitoring method |
-
1977
- 1977-12-21 JP JP15289477A patent/JPS5485784A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5485784A (en) | 1979-07-07 |
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