JPS6439510A - Thickness measuring method - Google Patents
Thickness measuring methodInfo
- Publication number
- JPS6439510A JPS6439510A JP19527887A JP19527887A JPS6439510A JP S6439510 A JPS6439510 A JP S6439510A JP 19527887 A JP19527887 A JP 19527887A JP 19527887 A JP19527887 A JP 19527887A JP S6439510 A JPS6439510 A JP S6439510A
- Authority
- JP
- Japan
- Prior art keywords
- speed
- wave
- time
- longitudinal wave
- vibrator
- 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 detect the thickness of even a body whose material is unknown by measuring the speed of a surface wave and operating the speed of a longitudinal wave, and sending and receiving the longitudinal wave and measuring its required time. CONSTITUTION:When a probe 3 equipped with vibrators 1 and 2 at a specific equal angle is made to abut on the surface of the body 4 to be measured and an ultrasonic measuring instrument 5 applies a high frequency electric signal to the vibrator 1, ultrasonic wave pulses are generated to propagate the surface wave to the body 4, and the vibrator 2 receives it. Then, the speed Cs of the surface wave is found from the time t1 between the transmission and reception and the interval between the vibrators. Here, it is evident that the speed Cs is 0.45 time the speed Cd of the longitudinal wave whatever material the ultrasonic wave is propagated in, so the speed Cd is operated. For the purpose, a probe 7 which has a vibrator 6 for transmitting and receiving the longitudinal wave is made to abut on the surface of the body 4 and the time t1 required by the reciprocation of the longitudinal wave is measured to calculate the thickness of the body 4 from the speed Cd and time t4.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19527887A JPS6439510A (en) | 1987-08-06 | 1987-08-06 | Thickness measuring method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19527887A JPS6439510A (en) | 1987-08-06 | 1987-08-06 | Thickness measuring method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6439510A true JPS6439510A (en) | 1989-02-09 |
Family
ID=16338501
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19527887A Pending JPS6439510A (en) | 1987-08-06 | 1987-08-06 | Thickness measuring method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6439510A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103308012A (en) * | 2013-06-24 | 2013-09-18 | 广东惠利普路桥信息工程有限公司 | Concrete pavement thickness detection system and detection method |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5567605A (en) * | 1978-11-17 | 1980-05-21 | Hitachi Ltd | Thickness measuring method by ultrasonic wave |
JPS58184507A (en) * | 1982-04-23 | 1983-10-28 | Hitachi Ltd | Device for measuring thickness of surface layer |
JPS6122208A (en) * | 1984-07-11 | 1986-01-30 | Nippon Steel Corp | Simultaneous measurement of body dimension and sound velocity |
-
1987
- 1987-08-06 JP JP19527887A patent/JPS6439510A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5567605A (en) * | 1978-11-17 | 1980-05-21 | Hitachi Ltd | Thickness measuring method by ultrasonic wave |
JPS58184507A (en) * | 1982-04-23 | 1983-10-28 | Hitachi Ltd | Device for measuring thickness of surface layer |
JPS6122208A (en) * | 1984-07-11 | 1986-01-30 | Nippon Steel Corp | Simultaneous measurement of body dimension and sound velocity |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103308012A (en) * | 2013-06-24 | 2013-09-18 | 广东惠利普路桥信息工程有限公司 | Concrete pavement thickness detection system and detection method |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
IE890137L (en) | Acoustic testing of elasticity of soft biological tissues | |
SE9001340D0 (en) | ULTRASOUND METHOD AND APPARATUS FOR EXAMINING THESE TISSUES IN PARTICULAR | |
JPS6465902A (en) | Limit oscillator | |
JPS57136107A (en) | Ultrasonic thickness measuring method and apparatus | |
JPS6439510A (en) | Thickness measuring method | |
JPS6465407A (en) | Measuring instrument for thickness of concrete and position of internal cracking | |
JPS5540967A (en) | Surface acoustic wave unit | |
JPS6488359A (en) | Ultrasonic probe | |
JPS5710449A (en) | Temperature compensation type crack measuring device | |
JPS5626255A (en) | Stress measuring method by ultrasonic wave for substance in liquid | |
JPS5512462A (en) | Acoustic liquid level detection | |
GB1088741A (en) | A device for emitting and receiving ultra-sonic vibrations | |
GB673447A (en) | Improvements in and relating to methods of ultrasonic investigation with wide-band frequency modulated waves | |
SU482670A1 (en) | Device for measuring the speed of propagation of ultrasound | |
SU1099270A1 (en) | Piezoelectric converter for non-destructive inspection | |
SU1486917A1 (en) | Method of ultrasonic monitoring of quality of elongated articles | |
JPS5730968A (en) | Echo sounder | |
JPS5593006A (en) | Ultrasonic thickness measuring instrument | |
JPS6446609A (en) | Plate thickness measuring instrument for body to be measured with film | |
JPS6475960A (en) | Ultrasonic oblique angle probe | |
JP2552592Y2 (en) | Ultrasonic measuring device | |
SU1252721A1 (en) | Method of determining lead angle of inclined ultrasonic transducer | |
JPS5539057A (en) | Moving body detector using ultrasonic wave | |
SU1603287A1 (en) | Apparatus for checking strength of concrete | |
JPS5563722A (en) | Ultrasonic-wave measuring device |