JPS5676047A - Characteristic evaluation of ae sensor - Google Patents
Characteristic evaluation of ae sensorInfo
- Publication number
- JPS5676047A JPS5676047A JP15327179A JP15327179A JPS5676047A JP S5676047 A JPS5676047 A JP S5676047A JP 15327179 A JP15327179 A JP 15327179A JP 15327179 A JP15327179 A JP 15327179A JP S5676047 A JPS5676047 A JP S5676047A
- Authority
- JP
- Japan
- Prior art keywords
- sensor
- cavitation
- detected
- generated
- collapsing
- 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
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
PURPOSE: To perform relative sensitivity calibration of plural AE sensors quantatively , correctly and easily by a method wherein ultrasonic waves are generated by a collapsing of cavitation generated with a driving piece dipped in a liquid and these are detected by means of an AE sensor.
CONSTITUTION: When a cavitation generation vibrating piece 15 is oscillated with a signal generator 11 of a magnetostriction oscillator 10, cavitation is continuously generated in the dipping liquid level and it collapases. The collapsing frequency thereof becomes ultrasonic signals of several kHzWseveral 100kHz propagating in a liquid 21 and are detected by means of an AE sensor 31. The ultrasonic signals detected through the AE sensor 31 are amplified through a preamplifier 32 and processed through a band pass filter 33 and a main amplifier 34, and thereafter, output signals in proportion to the cavitation intensity are output. On this account, with this, a relative sensitivity characteristics and frequency characteristics of each AE sensor are easily obtained.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15327179A JPS5676047A (en) | 1979-11-27 | 1979-11-27 | Characteristic evaluation of ae sensor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15327179A JPS5676047A (en) | 1979-11-27 | 1979-11-27 | Characteristic evaluation of ae sensor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5676047A true JPS5676047A (en) | 1981-06-23 |
Family
ID=15558804
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15327179A Pending JPS5676047A (en) | 1979-11-27 | 1979-11-27 | Characteristic evaluation of ae sensor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5676047A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017009510A (en) * | 2015-06-25 | 2017-01-12 | 前田建設工業株式会社 | Pressure delivery performance evaluation system of fresh concrete |
-
1979
- 1979-11-27 JP JP15327179A patent/JPS5676047A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017009510A (en) * | 2015-06-25 | 2017-01-12 | 前田建設工業株式会社 | Pressure delivery performance evaluation system of fresh concrete |
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