JPS54111855A - Measuring method of thicknesses using ultrasonic waves - Google Patents
Measuring method of thicknesses using ultrasonic wavesInfo
- Publication number
- JPS54111855A JPS54111855A JP1955178A JP1955178A JPS54111855A JP S54111855 A JPS54111855 A JP S54111855A JP 1955178 A JP1955178 A JP 1955178A JP 1955178 A JP1955178 A JP 1955178A JP S54111855 A JPS54111855 A JP S54111855A
- Authority
- JP
- Japan
- Prior art keywords
- pulses
- transducer
- reflected
- cable
- wave pulses
- 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
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
Abstract
PURPOSE: To measure the seath thickness of a moving cable continuously with high resolution by judging that first and second reflected wave pulses have the specified amplitude, frequency and initial polarity, thence generating the signal of the time width equal to the time difference of both pulses.
CONSTITUTION: In an applied voltage pulse generator 5, trapezoidal wave pulses 13 are formed and are periodically inputted to an electro-acoustic transducer 6. A circular flat plate composed of barium titanate ceramics is built as a transducing element in the transducer 6 and has been set at, e.g., resonance frequency 5MHz. In the transducer 6, the exciting wave pulses of 5MHz are formed. These propagate in water 12 and arrive at a cable 10. The exciting pulses are then reflected by the surface of the cable and the bottom face and become the first, second reflected pulses having the time difference proportional to the sheath thickness. These pulses are again converted to electric signals by the transducer 6 and the signals are than inputted to a signal processing circuit 8 via amplifier 7. When judgement is accomplished in this circuit and in case the conditions are satisfied, the square wave pulses are outputted and are then converted to DC voltage by a D/A converter 9. This voltage is then recorded.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1955178A JPS54111855A (en) | 1978-02-21 | 1978-02-21 | Measuring method of thicknesses using ultrasonic waves |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1955178A JPS54111855A (en) | 1978-02-21 | 1978-02-21 | Measuring method of thicknesses using ultrasonic waves |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54111855A true JPS54111855A (en) | 1979-09-01 |
Family
ID=12002443
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1955178A Pending JPS54111855A (en) | 1978-02-21 | 1978-02-21 | Measuring method of thicknesses using ultrasonic waves |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54111855A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5797404A (en) * | 1980-12-10 | 1982-06-17 | Showa Electric Wire & Cable Co Ltd | Measuring device for thickness of cable sheath |
-
1978
- 1978-02-21 JP JP1955178A patent/JPS54111855A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5797404A (en) * | 1980-12-10 | 1982-06-17 | Showa Electric Wire & Cable Co Ltd | Measuring device for thickness of cable sheath |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS57161672A (en) | Measuring method utilizing ultrasonic wave | |
SE7611703L (en) | SET AND DEVICE FOR ULTRASOUND IMAGE | |
EP0376580A3 (en) | Method for acoustically measuring wall thickness of tubular goods | |
CA2107525A1 (en) | Method and apparatus for acoustic examination using time reversal | |
SE9001340D0 (en) | ULTRASOUND METHOD AND APPARATUS FOR EXAMINING THESE TISSUES IN PARTICULAR | |
JPS5570761A (en) | Ultrasonic wave distance meter | |
GB1570687A (en) | Ultrasonic phase array systems | |
JPS54111855A (en) | Measuring method of thicknesses using ultrasonic waves | |
US3509752A (en) | Ultrasonic thickness measuring apparatus | |
RU2011205C1 (en) | Parametric echo sounder | |
SU626409A1 (en) | Method of measuring electromechanical coupling factor of ultrasonic piezoelectric transducers | |
JPS52146188A (en) | Method of controlling bulk wave generating frequency of surface acoustic wave transducer element | |
JPS5512462A (en) | Acoustic liquid level detection | |
Jia et al. | Experimental investigations of Lamb waves on pulsed piezoelectric transducers and their ultrasonic radiation into liquids | |
ES336518A1 (en) | Improvements in or relating to Apparatuses for Digital Measurement of Distances by Means of Ultrasonic Pulses | |
SU1244581A1 (en) | Device for testing electroacoustical transducers | |
SU658469A1 (en) | Ultrasonic differential piezoelectric transducer | |
JPS5710474A (en) | Distance measuring equipment | |
SU1019359A1 (en) | Radio pulse phase shift measuring device | |
SU1099270A1 (en) | Piezoelectric converter for non-destructive inspection | |
RU2019826C1 (en) | Unit for forming acoustic field with screwed wavefront | |
SU1619064A1 (en) | Method of measuring speed of ultrasonic waves | |
SU1265591A1 (en) | Device for measuring time of ultrasound propagation | |
SU389401A1 (en) | ||
SU1684694A1 (en) | Method of recovery of electric field in solid dielectrics |