JPS5667723A - Measuring method for propagation velocity of vibration wave - Google Patents
Measuring method for propagation velocity of vibration waveInfo
- Publication number
- JPS5667723A JPS5667723A JP14422379A JP14422379A JPS5667723A JP S5667723 A JPS5667723 A JP S5667723A JP 14422379 A JP14422379 A JP 14422379A JP 14422379 A JP14422379 A JP 14422379A JP S5667723 A JPS5667723 A JP S5667723A
- Authority
- JP
- Japan
- Prior art keywords
- mode
- ground
- exciter
- vibration detectors
- measuring method
- 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.)
- Granted
Links
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
PURPOSE: To permit the ground quality to be widely and highly accurately measured with little time and efforts by driving an exciter by using the repeated sine-wave modulated by any one of a soft-start mode, an attenuation mode and a combination mode of these two.
CONSTITUTION: On a ground G whose stratum is to be measured, an exciter 1 and vibration detectors 2 and 3 are placed at distances. The exciter 1 is driven by the repeated sine-wave modulated by any one of a soft-start mode (a), an attenuation mode (b) and a combination mode of these two (c) to propagate vibrations through the ground G, and the mutual relation between the outputs detected by the two vibration detectors 2 and 3 is obtained to compute the velocity and wavelength of the propagation wave. This permits the ground quality to be measured over a wide range without the need for changing the positions of or the distance between the two vibration detectors 2 and 3.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14422379A JPS5667723A (en) | 1979-11-07 | 1979-11-07 | Measuring method for propagation velocity of vibration wave |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14422379A JPS5667723A (en) | 1979-11-07 | 1979-11-07 | Measuring method for propagation velocity of vibration wave |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5667723A true JPS5667723A (en) | 1981-06-08 |
JPH0213249B2 JPH0213249B2 (en) | 1990-04-03 |
Family
ID=15357098
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14422379A Granted JPS5667723A (en) | 1979-11-07 | 1979-11-07 | Measuring method for propagation velocity of vibration wave |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5667723A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63309887A (en) * | 1987-06-11 | 1988-12-16 | Nichireki Chem Ind Co Ltd | Measuring method for layer thickness and layer quality of constitution layer of road or the like |
JPH0272178A (en) * | 1978-12-30 | 1990-03-12 | Beecham Group Plc | Chemical intermediate |
WO2001096822A1 (en) * | 2000-06-12 | 2001-12-20 | Addest Technovation Pte. Ltd. | Arrangement and method for measuring the speed of sound |
JPWO2016170676A1 (en) * | 2015-04-24 | 2018-02-22 | 独立行政法人石油天然ガス・金属鉱物資源機構 | Survey method, generator and survey system |
JP2020148649A (en) * | 2019-03-14 | 2020-09-17 | 日本電気株式会社 | Device and method for estimating state of soil and program |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2246390B1 (en) | 2004-11-25 | 2012-12-26 | Mitsui Chemicals, Inc. | Propylene resin composition and use thereof |
-
1979
- 1979-11-07 JP JP14422379A patent/JPS5667723A/en active Granted
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0272178A (en) * | 1978-12-30 | 1990-03-12 | Beecham Group Plc | Chemical intermediate |
JPH0375548B2 (en) * | 1978-12-30 | 1991-12-02 | Smithkline Beecham Plc | |
JPS63309887A (en) * | 1987-06-11 | 1988-12-16 | Nichireki Chem Ind Co Ltd | Measuring method for layer thickness and layer quality of constitution layer of road or the like |
WO2001096822A1 (en) * | 2000-06-12 | 2001-12-20 | Addest Technovation Pte. Ltd. | Arrangement and method for measuring the speed of sound |
US6738312B1 (en) | 2000-06-12 | 2004-05-18 | Addest Technovation Pte Ltd. | Arrangement and method for measuring the speed of sound |
JPWO2016170676A1 (en) * | 2015-04-24 | 2018-02-22 | 独立行政法人石油天然ガス・金属鉱物資源機構 | Survey method, generator and survey system |
JP2020148649A (en) * | 2019-03-14 | 2020-09-17 | 日本電気株式会社 | Device and method for estimating state of soil and program |
Also Published As
Publication number | Publication date |
---|---|
JPH0213249B2 (en) | 1990-04-03 |
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