CN203908870U - Fatigue test clamp for thick aluminum alloy board - Google Patents
Fatigue test clamp for thick aluminum alloy board Download PDFInfo
- Publication number
- CN203908870U CN203908870U CN201420280834.8U CN201420280834U CN203908870U CN 203908870 U CN203908870 U CN 203908870U CN 201420280834 U CN201420280834 U CN 201420280834U CN 203908870 U CN203908870 U CN 203908870U
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- CN
- China
- Prior art keywords
- fixture
- fatigue test
- aluminium alloy
- clamp
- sample
- 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 - Lifetime
Links
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 28
- 238000009661 fatigue test Methods 0.000 title claims abstract description 22
- 238000012360 testing method Methods 0.000 claims description 17
- 230000007704 transition Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a fatigue test clamp for a thick aluminum alloy board, which comprises a pair of clamps mutually symmetric in structure, and a clamping and placing groove for clamping a sample is formed in each of the clamps; the end surfaces, close to a groove opening, of the clamping and placing groove, are two contact surfaces, the two contact surfaces are inclined planes, and the distance between the two contact surfaces is gradually shortened along with the gradually shortened distances from the two contact surfaces to the groove opening; an inner threaded hole used for being matched with a tester clamp is formed in the outer end surface of each clamp, and ruler areas are arranged on the end surfaces of the clamp groove opening. The fatigue test clamp can meet the demand of thick aluminum alloy boards of different thicknesses for fatigue tests to the minimum extent.
Description
Technical field
The utility model relates to a kind of aluminium alloy thick plate fatigue test clamper.
Background technology
Along with the development of aircraft industry technology, there is the aluminium alloy of the excellent properties such as high-strength and high ductility and obtained more application at the main position such as fuselage, wing and covering of aircraft.In recent years, manufacturer, in order to reduce production costs, gradually adopts integrally-built aluminium alloy thick plate, and thickness, more than 6.3mm, replaces the parts of single structure.High cycles fatigue test is the fatigue lifetime of sign aluminum alloy materials under alterante stress effect, and this index has become affects one of important indicator of its engineering application.At present, the fixture that torture test test is used is mainly plate wedge fixture, and the thickness of clamping sample is subject to the restriction of chucking opening size, along with the increase of sample thickness, especially for thick aluminum alloy plate materials sample, plate wedge folder just has certain limitation.Secondly, along with the increase of thickness, the dynamic and static force of test can improve thereupon, very easily produces skidding, thereby affect test findings in common fixture process of the test.Finally, the thickness that increases sample can be had higher requirement to the design of fixture and cost.
Summary of the invention
The purpose of this utility model is to provide a kind of aluminium alloy thick plate fatigue test clamper, and it can meet the demand of different-thickness aluminium alloy thick plate torture test to greatest extent.
For achieving the above object, the utility model is taked following design proposal:
A kind of aluminium alloy thick plate fatigue test clamper, comprise a pair of fixture with symmetrical structure, on each fixture, offer for snapping in the clipping groove of sample, the nearly notch end face of this clipping groove is two surface of contact, two surface of contact are cambered surface, and the spacing of two surface of contact is less along with more approaching notch end.
Described aluminium alloy thick plate, with in fatigue test clamper, has the internal thread hole for coordinating with grip of testing machine on the outer face of each fixture.
Described aluminium alloy thick plate, with in fatigue test clamper, is provided with scale region on fixture notch end face.
Described aluminium alloy thick plate is with in fatigue test clamper, and the radian of each cambered surface is corresponding with the radian that will clamp sample transition arc.
The utility model has the advantages that: fixture of the present utility model is difficult for skidding in process of the test, farthest the reliability of warranty test result and accuracy.More existing fixture phase specific energy is saved the material of test fixture, and the cost that fixture is made is lower.
Accompanying drawing explanation
Fig. 1 is fatigue test clamper one example structure schematic diagram (transversal section, application state) for the utility model aluminium alloy thick plate.
Fig. 2 is the axonometric drawing of this aluminium alloy thick plate with fatigue test clamper.
Fig. 3 is the structural representation (stereoscopic-state) of this aluminium alloy thick plate with a side monomer fixture of fatigue test clamper.
Fig. 4 is aluminium alloy thick plate assay maps.
Below in conjunction with drawings and the specific embodiments, the utility model is described in further details.
Embodiment
Consult shown in Fig. 1 to Fig. 4, the utility model aluminium alloy thick plate comprises a pair of fixture 2 with symmetrical structure with fatigue test clamper, offers for snapping in the clipping groove 4 of sample on each fixture.
Main innovate point of the present utility model is: two surface of contact 401 (also can be described as the clamping face of fixture 2) of described clipping groove 4 nearly notch end faces are cambered surfaces, and the spacing of two surface of contact is along with more approaching notch end less (receiving in port direction).
The shape of the sample 3 of existing aluminium alloy thick plate torture test mostly generally is the shape shown in Fig. 4, therefore that surface of contact 401 is designed to cambered surface is better, and its radian corresponding with the radian 301 that will clamp sample transition arc better (referring to Fig. 1 and Fig. 4).
The clamping face of conventional tired fixture is plane, and the surface of contact of this novel clamp is designed to arc shape, can prevent that slab sample from producing skidding when loading, and the lock ability of this cambered surface is better than conventional plane; Secondly, thereby specimen size can fit tightly realize loading procedure completely with fixture, thereby does not rely on extraneous load mode (manual loading, hydraulic pressure or air pressure mode); The thickness of sample can be adjusted arbitrarily and not rely on the openings of sizes of fixture, can complete like this torture test of different aluminum alloys slab.
On the outer face of each fixture, have the internal thread hole 1 for coordinating with grip of testing machine, to be used in conjunction with the fixture of testing machine, carry out the length travel of fixture, thereby adjust the distance between a pair of fixture by the movement of at least one fixture.
The utility model aluminium alloy thick plate also can be provided with scale region (scale area having is that etching or spraying are made) with fatigue test clamper on fixture notch end face, thereby guarantees that the axial loading force of sample can centering.
The utility model aluminium alloy thick plate by principle of work and the course of work of fatigue test clamper is:
1. the installation of fixture
The internal thread hole at the utility model fixture 2 two ends coordinates with the fixture of testing machine, fixture install fixing after, open testing machine, by mobile one of them fixture (also can be designed to move two fixtures) simultaneously, adjust the distance between this pair of fixture.
2. the installation of sample
Adjust after the distance between a pair of fixture, the lower end of sample 3 (take embodiment illustrated in fig. 1 is example) slowly pushed from the left side of lower clamp, by the distance of finely tuning between a pair of fixture, guarantee that the upper end of sample 3 can slowly be pushed into the left side of upper fixture.
3. the centering of sample
Sample makes the center line of sample thickness direction and overlaps the zero point of scale after installing, and adjusts the axial alignment of sample by the scale mark of chucking surface.
4. load applies
When sample two ends are subject to action of pulling stress, because the clamping face of fixture 2 is cambered surface, opening is more and more less, sample can and fixture keep fitting tightly, very difficultly from a pair of fixture 2, skid off, thereby guaranteed that load can pass to sample exactly.
The various embodiments described above can not depart from some variations in addition under protection domain of the present utility model, thus above explanation comprises and accompanying drawing shown in structure should be considered as exemplary, but not the protection domain of applying for a patent in order to limit the utility model.
Claims (4)
1. an aluminium alloy thick plate fatigue test clamper, comprise a pair of fixture with symmetrical structure, it is characterized in that: on each fixture, offer for snapping in the clipping groove of sample, the nearly notch end face of this clipping groove is two surface of contact, two surface of contact are cambered surface, and the spacing of two surface of contact is less along with more approaching notch end.
2. aluminium alloy thick plate fatigue test clamper according to claim 1, is characterized in that: on the outer face of each fixture, have the internal thread hole for coordinating with grip of testing machine.
3. aluminium alloy thick plate fatigue test clamper according to claim 1, is characterized in that: on fixture notch end face, be provided with scale region.
4. aluminium alloy thick plate fatigue test clamper according to claim 1, is characterized in that: the radian of each cambered surface is corresponding with the radian that will clamp sample transition arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420280834.8U CN203908870U (en) | 2014-05-29 | 2014-05-29 | Fatigue test clamp for thick aluminum alloy board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420280834.8U CN203908870U (en) | 2014-05-29 | 2014-05-29 | Fatigue test clamp for thick aluminum alloy board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203908870U true CN203908870U (en) | 2014-10-29 |
Family
ID=51783133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420280834.8U Expired - Lifetime CN203908870U (en) | 2014-05-29 | 2014-05-29 | Fatigue test clamp for thick aluminum alloy board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203908870U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104655482A (en) * | 2015-01-20 | 2015-05-27 | 华能国际电力股份有限公司 | Plate-shaped tensile sample and clamp connecting structure for testing high-temperature tensile property of metal material |
| CN105928782A (en) * | 2016-05-31 | 2016-09-07 | 哈尔滨工业大学 | In-situ tensile fixture for thin-walled structural part |
| CN108387457A (en) * | 2018-01-23 | 2018-08-10 | 安徽工业大学 | A kind of high/low temperature fatigue experimental device suitable for thin plate fatigue testing specimen |
-
2014
- 2014-05-29 CN CN201420280834.8U patent/CN203908870U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104655482A (en) * | 2015-01-20 | 2015-05-27 | 华能国际电力股份有限公司 | Plate-shaped tensile sample and clamp connecting structure for testing high-temperature tensile property of metal material |
| CN105928782A (en) * | 2016-05-31 | 2016-09-07 | 哈尔滨工业大学 | In-situ tensile fixture for thin-walled structural part |
| CN105928782B (en) * | 2016-05-31 | 2019-05-14 | 哈尔滨工业大学 | A kind of thin-walled workpiece original position stretching fixture |
| CN108387457A (en) * | 2018-01-23 | 2018-08-10 | 安徽工业大学 | A kind of high/low temperature fatigue experimental device suitable for thin plate fatigue testing specimen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160530 Address after: Yang Yanlu 101407 Beijing city Huairou District Yanqi Economic Development Zone No. 88 Patentee after: GUOBIAO (BEIJING) TESTING & CERTIFICATION CO.,LTD. Address before: 100088 Beijing city Xicheng District Xinjiekou Avenue No. 2 Patentee before: General Research Institute for Nonferrous Metals |
|
| CX01 | Expiry of patent term |
Granted publication date: 20141029 |
|
| CX01 | Expiry of patent term |