JPS5689036A - Detector for stress in earth - Google Patents
Detector for stress in earthInfo
- Publication number
- JPS5689036A JPS5689036A JP16708279A JP16708279A JPS5689036A JP S5689036 A JPS5689036 A JP S5689036A JP 16708279 A JP16708279 A JP 16708279A JP 16708279 A JP16708279 A JP 16708279A JP S5689036 A JPS5689036 A JP S5689036A
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- pressure
- casing
- earth
- converter
- 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
Abstract
PURPOSE: To detect accurate stress by sealing a pressure converter and a liquid with constant compressibility in a casing and by absorbing a liquid, as much as the volume of the compression of the casing due to external force, with the compressibility of the liquid and the strain of the pressure converter.
CONSTITUTION: In pressure receiving casing 7 that getting strained equally by external equal force operating in every direction and made of surfaces of point symmetry, pressure converter 9 and liquid 8 with constant compressibility are sealed. As pressure 6 in the earth operates on pressure receiving casing 7 and casing 7 contracts, liquid 8 is pushed away according to the extent of the contraction and while its volume is absorbed with the compressiblity of liquid 8 and the strain of pressure converter 9, the detection value of converter 9 is passed through amplifier 13 and displayed on display part 14. Therefore, the pressure in the earth never causes the pressure receiving surface to expand and strains in the earth in respective three orthogonal axial directions are ignored, so that the precision of the detection can be improved.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16708279A JPS5689036A (en) | 1979-12-22 | 1979-12-22 | Detector for stress in earth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16708279A JPS5689036A (en) | 1979-12-22 | 1979-12-22 | Detector for stress in earth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5689036A true JPS5689036A (en) | 1981-07-20 |
Family
ID=15843062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16708279A Pending JPS5689036A (en) | 1979-12-22 | 1979-12-22 | Detector for stress in earth |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5689036A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005291908A (en) * | 2004-03-31 | 2005-10-20 | Akito Sano | Deformation detection member, irregularity detection method using deformation detection member, irregularity detection position presenting device and irregularity detection position presenting method |
| US7685886B2 (en) | 2003-12-26 | 2010-03-30 | Toyota Jidosha Kabushiki Kaisha | Convexo concave amplifying device and convexo concave detecting method by use thereof, deformation sensing device and convexo concave detecting method by use thereof, and convexo concave position exhibiting device and convexo concave position exhibiting method |
-
1979
- 1979-12-22 JP JP16708279A patent/JPS5689036A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7685886B2 (en) | 2003-12-26 | 2010-03-30 | Toyota Jidosha Kabushiki Kaisha | Convexo concave amplifying device and convexo concave detecting method by use thereof, deformation sensing device and convexo concave detecting method by use thereof, and convexo concave position exhibiting device and convexo concave position exhibiting method |
| JP2005291908A (en) * | 2004-03-31 | 2005-10-20 | Akito Sano | Deformation detection member, irregularity detection method using deformation detection member, irregularity detection position presenting device and irregularity detection position presenting method |
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