CN1475768A - External guiding type strain measuring method - Google Patents
External guiding type strain measuring method Download PDFInfo
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- CN1475768A CN1475768A CNA031460844A CN03146084A CN1475768A CN 1475768 A CN1475768 A CN 1475768A CN A031460844 A CNA031460844 A CN A031460844A CN 03146084 A CN03146084 A CN 03146084A CN 1475768 A CN1475768 A CN 1475768A
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- foil gauge
- carrier
- strain
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- exogenous
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Abstract
An external pilot type strain measuring method includes welding a pair of transverse pilot bodies to the structural member to be measured, welding a longitudinal pilot body to each transverse pilot body, fixing a high-elasticity metal sheet as the carrier of strain gauge between longitudinal pilot bodies, sticking a strain gauge onto said carrier, and measuring. Its advantage is high success rate.
Description
Technical field
The present invention relates to a kind of exogenous strain measurement method, particularly a kind of strain measurement method of huge, the large-scale component as the ocean platform catheter holder.
Background technology
At present, common strain measurement method is directly foil gauge to be attached on the measured member of desire, but it is because huge, machining can not be directly carried out on the surface of large-scale component, so surface smoothness is all very poor, use the common strain measurement method that directly pastes foil gauge to be difficult to solve huge, the strain measurement problem of large-scale component, especially to the such strain measurement that is submerged in the large-scale component in the seawater of ocean platform catheter holder, not only measured rough surface, and owing to measured part is immersed in the water, Insulation Problems in the measurement causes measuring the main cause of failure often, so, huge for as the ocean platform catheter holder, large-scale component, it almost is impossible using the common strain measurement method that directly pastes foil gauge.
Summary of the invention
Can directly not apply mechanically in view of having reliable method and technology at present.Purpose of the present invention is exactly to overcome defective and the deficiency that prior art exists, and proposes a kind of exogenous strain measurement method that can solve huge, the large-scale component strain measurement problem as the ocean platform catheter holder.
The object of the present invention is achieved like this: the invention provides a kind of exogenous strain measurement method, comprise the following steps: at the fixedly connected a pair of lateral steering frame of the measured member of desire upper edge desire direction of measurement; At the inboard fixedly connected vertical guiding carrier respectively of described lateral steering frame, described vertical guiding carrier stretches out in opposite directions; A fixedly connected extraordinary sheet metal of elasticity is as the foil gauge carrier between described vertical guiding carrier, and described lateral steering frame, vertical guiding carrier are compared approximate rigid body with foil gauge; On described foil gauge carrier, paste foil gauge; Apply external applied load for the measured member of desire, if the distance between above-mentioned two transverse guidance framves is L, the distance between above-mentioned two longitudinal guide framves is l, supposes that strain is ε, the strain of foil gauge carrier is ε '=ε L/l, and the strain that promptly records foil gauge is ε '.Adopt this measuring method of the present invention that actual strain has been amplified L/l doubly.That is to say that the proportional L/l of dwindling of the data that the exogenous measuring method is measured doubly, is the data that actual strain is measured.
Further, described lateral steering frame adopts welding or riveted joint with the mode of fixedlying connected of the measured member of desire.Described vertical guiding carrier adopts welding or riveted joint with the mode of fixedlying connected of lateral steering frame.Described vertical guiding carrier adopts welding or riveted joint or screw thread to fix with the mode of fixedlying connected of foil gauge carrier.Described bearing capacity horizontal, the longitudinal guide frame is not more than 1/100 of the measured element bearing capacity of desire.
Because the foil gauge carrier is very little, can just be ready to before measurement, and can directly carry out machining, thereby be easy to improve surface smoothness, solves strain measurement problem huge, large-scale component.Especially to the such strain measurement that is submerged in the large-scale component in the seawater of ocean platform catheter holder, because the foil gauge carrier is little, the waterproof insulation problem has improved the measurement success ratio with regard to fine processing.
Description of drawings
Figure l is the structural representation of exogenous strain measurement method of the present invention.
Embodiment
Below in conjunction with accompanying drawing exogenous strain measurement method of the present invention is described further.
Desire a pair of lateral steering frame 2 in direction of measurement welding or the riveted joint in the measured member l of desire upper edge, at this a vertical guiding carrier 3 is welded or riveted in lateral steering frame 2 inboards separately again, vertically guiding carrier 3 stretches out in opposite directions.Welding or riveted joint or screw thread are fixed an extraordinary sheet metal of elasticity as foil gauge carrier 4 between two vertical guiding carriers 3, paste foil gauge 5 on foil gauge carrier 4.If the distance between two transverse guidance framves 2 is L, the distance between two longitudinal guide framves 3 is 1, when external applied load causes tested member 1 strain, supposes that strain is ε, and then the displacement between the lateral steering frame 2 is ε L.Because lateral steering frame 2, vertical guiding carrier 3 are compared to be similar to foil gauge 5 and are thought rigid body, promptly laterally, the bearing capacity of longitudinal guide frame is not more than 1/100 of the measured element bearing capacity of desire, so, displacement between the foil gauge carrier 4 also should be ε L, and its strain is ε '=ε L/l, the strain that is foil gauge 5 is ε ', so such measuring method has been amplified L/l doubly with actual strain.That is to say that the proportional L/l of dwindling of the data that the exogenous measuring method is measured doubly, is the data that actual strain is measured.
Claims (5)
1, a kind of exogenous strain measurement method comprises the following steps:
Desire the fixedly connected a pair of lateral steering frame of direction of measurement (2) in the measured member of desire (1) upper edge; At the inboard fixedly connected vertical guiding carrier (3) respectively of described lateral steering frame (2), described vertical guiding carrier (3) stretches out in opposite directions; A fixedly connected extraordinary sheet metal of elasticity is as foil gauge carrier (4) between described vertical guiding carrier (3), and lateral steering frame (2), vertical guiding carrier (3) are compared approximate rigid body with foil gauge (5); Go up subsides foil gauge (5) at described foil gauge carrier (4); Apply external applied load for the measured member of desire (1), if the distance between above-mentioned two transverse guidance framves (2) is L, the distance between above-mentioned two longitudinal guide framves (3) is 1, supposes that strain is ε, the strain of foil gauge carrier is ε '=ε L/l, and the strain that promptly records foil gauge is ε '.
2, a kind of exogenous measuring method as claimed in claim 1 is characterized in that: described lateral steering frame (2) adopts welding or riveted joint with the mode of fixedlying connected of the measured member of desire (1).
3, a kind of exogenous measuring method as claimed in claim 1 or 2 is characterized in that: described vertical guiding carrier adopts welding or riveted joint with the mode of fixedlying connected of lateral steering frame.
4, a kind of exogenous measuring method as claimed in claim 1 or 2 is characterized in that: described vertical guiding carrier adopts welding or riveted joint or screw thread to fix with the mode of fixedlying connected of foil gauge carrier.
5, a kind of exogenous measuring method as claimed in claim 1 or 2 is characterized in that: described bearing capacity horizontal, the longitudinal guide frame is not more than 1/100 of the measured element bearing capacity of desire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031460844A CN1475768A (en) | 2003-07-22 | 2003-07-22 | External guiding type strain measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031460844A CN1475768A (en) | 2003-07-22 | 2003-07-22 | External guiding type strain measuring method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1475768A true CN1475768A (en) | 2004-02-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA031460844A Pending CN1475768A (en) | 2003-07-22 | 2003-07-22 | External guiding type strain measuring method |
Country Status (1)
| Country | Link |
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| CN (1) | CN1475768A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100346145C (en) * | 2005-07-25 | 2007-10-31 | 中国科学院力学研究所 | Marine platform ice force measuring method based on local dense strain response |
| CN100346144C (en) * | 2005-07-25 | 2007-10-31 | 中国科学院力学研究所 | Marine platform ice force measuring device based on local dense strain response |
| CN102061596A (en) * | 2009-11-16 | 2011-05-18 | 三星电子株式会社 | Washing machine and laundry amount detection device thereof |
| CN104390576A (en) * | 2014-09-22 | 2015-03-04 | 吉林大学 | Mechanical welding deformation measuring apparatus and carriage frame joint welding technology optimization method |
| CN107655449A (en) * | 2017-09-20 | 2018-02-02 | 武汉卡米珈科技有限公司 | For electric power tower bar settlement monitoring device and installation method |
| CN108151689A (en) * | 2017-11-20 | 2018-06-12 | 中国建筑股份有限公司 | High accuracy displacement sensor |
| CN113748298A (en) * | 2019-05-09 | 2021-12-03 | 安德里兹公司 | Method and device for measuring the mass change of a heat exchanger of a steam boiler |
-
2003
- 2003-07-22 CN CNA031460844A patent/CN1475768A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100346145C (en) * | 2005-07-25 | 2007-10-31 | 中国科学院力学研究所 | Marine platform ice force measuring method based on local dense strain response |
| CN100346144C (en) * | 2005-07-25 | 2007-10-31 | 中国科学院力学研究所 | Marine platform ice force measuring device based on local dense strain response |
| CN102061596A (en) * | 2009-11-16 | 2011-05-18 | 三星电子株式会社 | Washing machine and laundry amount detection device thereof |
| US8776552B2 (en) | 2009-11-16 | 2014-07-15 | Samsung Electronics Co., Ltd. | Washing machine and laundry amount detection device thereof |
| CN104390576A (en) * | 2014-09-22 | 2015-03-04 | 吉林大学 | Mechanical welding deformation measuring apparatus and carriage frame joint welding technology optimization method |
| CN104390576B (en) * | 2014-09-22 | 2017-03-08 | 吉林大学 | A kind of mechanical welding deformation measuring device and Bus Frame Joint Welding optimization method |
| CN107655449A (en) * | 2017-09-20 | 2018-02-02 | 武汉卡米珈科技有限公司 | For electric power tower bar settlement monitoring device and installation method |
| CN108151689A (en) * | 2017-11-20 | 2018-06-12 | 中国建筑股份有限公司 | High accuracy displacement sensor |
| CN113748298A (en) * | 2019-05-09 | 2021-12-03 | 安德里兹公司 | Method and device for measuring the mass change of a heat exchanger of a steam boiler |
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