CN201096687Y - Compressed average flexing meter - Google Patents
Compressed average flexing meter Download PDFInfo
- Publication number
- CN201096687Y CN201096687Y CNU2007200816890U CN200720081689U CN201096687Y CN 201096687 Y CN201096687 Y CN 201096687Y CN U2007200816890 U CNU2007200816890 U CN U2007200816890U CN 200720081689 U CN200720081689 U CN 200720081689U CN 201096687 Y CN201096687 Y CN 201096687Y
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- CN
- China
- Prior art keywords
- extensometer
- force arm
- strain
- sample
- type displacement
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a compression average extensometer, in particular to an extensometer for testing compression stress and strain performance of thin sheet materials, which is composed of a strain type displacement sensor, a bolt, a force arm, an inclined force arm, a changeover blade and a sample, wherein both ends of the strain type displacement sensor are respectively connected with the force arm and the inclined force arm, the changeover blade is arranged fixedly at the other end of the force arm and the inclined force arm by the bolt, the edges of the upper and lower changeover blades are clamped at upper and lower ends of one side of the sample, by utilizing the elastic component of the strain type displacement sensor, the distance of the edges of the upper and lower changeover blades under free balance state is less than the specified distance, so that a complete extensometer test system is formed, the measured data is provided per pair, the obtained average value is the test result, the test result is ensured to be stable and accurate. The utility model can realize the minimum thickness limit 0.085mm of the thin sheet.
Description
Technical field
The utility model relates to the material mechanical performance field tests, particularly the average extensometer of compression of test light sheet material compression stress and strain property.
Background technology
The performance of test material stretching of the equal energy of existing extensometer and compression stress strain, but structure all is to have adopted a kind of special clamping force is provided, two contact points (as the blade edge of a knife and sample) to extensometer and sample apply clamping force, with the supporting extensometer gravity and make contact point follow the sample displacement.For light sheet material, this holding force has been enough to make sample deformation, and when compression, deformational displacement and compression stress that extensometer is measured do not have necessary relation, promptly are that deformation has comprised force of compression and holding force especially.This has just caused can't testing mechanical property under its contractive condition to light sheet material, and the modern project field urgently proposes this demand, and particularly aerospace field is more urgent.
Summary of the invention
The purpose of this utility model provides a kind of particularly average extensometer of compression of thin plate compression stress and strain mechanical property of sheet material of testing.
The technical solution of the utility model is as shown in Figure 1: respectively be equipped with identical extensometer in sample 4 symmetrical both sides, every extensometer is by strain-type displacement transducer 1, strain-type displacement transducer 1 two ends respectively with the arm of force 5, oblique force arm 6 connects, respectively utilize screw 2 to be fixed with commutation blade 3 on another termination of the arm of force 5 and oblique force arm 6, the edge of a knife of two commutation blades 3 is clamped in a side upper and lower side of sample 4 up and down, utilize the flexible member of strain-type displacement transducer 1, the distance of knife-edge part when free equilibrium state of two commutation blades 3 is less than the gauge length of regulation about making, form a complete extensometer test macro like this, test data provides in pairs, and getting its mean value is measurement result.Commutation blade 3 is that the edge of a knife direction of common blade has been rotated 90 °.
The utility model utilizes the elastic element structure of strain-type displacement transducer 1, by small self-recovery elastic force, sample is applied a reverse dynamometry, it is reverse that this dynamometry is just carried out the dynamometry equilibrium point of common extensometer mechanics, utilize dynamometry reverse, produce the holding force of the edge of a knife of extensometer commutation blade 3 to sample 4, the edge of a knife of blade 3 of just keeping commutating under the support of extensometer gravity contacts with the no gap of sample 4, and follow 4 compressive strains of sheet material material samples and displacement, needn't obtain in addition the clamping force that the needed special clamp device of extensometer is applied is installed.Because dynamometry is much smaller than clamping force, can not cause additional deformation to light sheet material, particularly adopt symmetry installation in pairs, measurement result is averaged, to eliminate material test system pressure, guarantee that measurement result is stable, accurate to the test additive error that sample compression direction unbalance loading is caused.
Description of drawings
Fig. 1. compress average extensometer structural representation;
Wherein: 1. strain-type displacement transducer; 2. screw; 3. commutation blade; 4. sample;
5. the arm of force; 6. oblique force arm.
Embodiment
The utility model is implemented by technique scheme, change the long arm of force of the parallel construction layout state of the two common arm of forces into oblique force arm 6, its trace performance is better, the reverse dynamometry that is applied is achieved by structural making, sample 4 is under paired symmetrical clamping, the edge of a knife is followed sample 4 compression set displacements, the precision calibration instrument of extensometer by special use carries out error and traces to the source, minimum thickness to light sheet material can reach 0.085mm, still can obtain test result stable, compression stress and strain accurately.
Claims (1)
1, a kind ofly compress average extensometer and constitute by two identical extensometers, each extensometer is by strain-type displacement transducer (1), screw (2), the arm of force (5), oblique force arm (6) and sample (4) are formed, it is characterized in that respectively being equipped with strain-type displacement transducer (1) in the symmetrical both sides of sample (4), the two ends of strain-type displacement transducer (1) respectively with the arm of force (5), oblique force arm (6) connects, respectively utilize screw (2) to be fixed with commutation blade (3) on another termination of the arm of force (5) and oblique force arm (6), the edge of a knife of two commutation blades (3) is clamped in a side upper and lower side of sample (4) up and down, utilize the flexible member of strain-type displacement transducer (1), the distance of knife-edge part when free equilibrium state of two commutation blades (3) is less than the gauge length of regulation about making.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200816890U CN201096687Y (en) | 2007-10-31 | 2007-10-31 | Compressed average flexing meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200816890U CN201096687Y (en) | 2007-10-31 | 2007-10-31 | Compressed average flexing meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201096687Y true CN201096687Y (en) | 2008-08-06 |
Family
ID=39923740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200816890U Expired - Fee Related CN201096687Y (en) | 2007-10-31 | 2007-10-31 | Compressed average flexing meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201096687Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9551560B2 (en) | 2012-09-06 | 2017-01-24 | Illinois Tool Works Inc. | Extensometer remote arm actuation |
| CN111879611A (en) * | 2020-07-24 | 2020-11-03 | 武汉科技大学 | Fixing device of extensometer for measuring compression deformation of refractory material |
| CN117168970A (en) * | 2023-11-02 | 2023-12-05 | 天津航天瑞莱科技有限公司 | Extensometer clamping device based on filling hole compression performance test |
-
2007
- 2007-10-31 CN CNU2007200816890U patent/CN201096687Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9551560B2 (en) | 2012-09-06 | 2017-01-24 | Illinois Tool Works Inc. | Extensometer remote arm actuation |
| CN104487797B (en) * | 2012-09-06 | 2017-06-16 | 伊利诺斯工具制品有限公司 | Extensometer remote boot server arm |
| CN111879611A (en) * | 2020-07-24 | 2020-11-03 | 武汉科技大学 | Fixing device of extensometer for measuring compression deformation of refractory material |
| CN117168970A (en) * | 2023-11-02 | 2023-12-05 | 天津航天瑞莱科技有限公司 | Extensometer clamping device based on filling hole compression performance test |
| CN117168970B (en) * | 2023-11-02 | 2023-12-29 | 天津航天瑞莱科技有限公司 | Extensometer clamping device based on filling hole compression performance test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080806 Termination date: 20101031 |