CN107449661A - A kind of rectangular slat sheet-type test specimen tensile test fixture - Google Patents
A kind of rectangular slat sheet-type test specimen tensile test fixture Download PDFInfo
- Publication number
- CN107449661A CN107449661A CN201710861280.9A CN201710861280A CN107449661A CN 107449661 A CN107449661 A CN 107449661A CN 201710861280 A CN201710861280 A CN 201710861280A CN 107449661 A CN107449661 A CN 107449661A
- Authority
- CN
- China
- Prior art keywords
- test specimen
- rectangular slat
- sheet
- type test
- piece
- 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.)
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
- G01N2203/0226—High temperature; Heating means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0278—Thin specimens
- G01N2203/0282—Two dimensional, e.g. tapes, webs, sheets, strips, disks or membranes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
- G01N2203/0423—Chucks, fixtures, jaws, holders or anvils using screws
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Abstract
Need to punch in the end of test specimen the invention discloses a kind of rectangular slat sheet-type test specimen tensile test fixture, when making test specimen, the center at hole is far from about the 1/8 of piece lengths with a distance from end.Bearing pin one end need to set nut, change another tip diameter along screw rod small, make end screw rod be easy to bearing pin to penetrate clamping plate and test specimen to contract.Test piece end mixes the screw bolt and nut of detachable with clamping part inwall void space, ensure test specimen axial tension during stretching, sliding phenomenon will not occur and clamping part inwall will not be touched, pasting steel disc respectively at the both ends of test specimen using epoxide-resin glue is encrypted.If think that consolidation process can be being carried out away from its opening position of end 1/4 using steel mesh piece when pouring test specimen to the measurement of rectangular slat sheet-type test specimen tensile property under the high temperature conditions, test result is accurately reliable, while the clamp structure is simple, convenient manufacture, convenient mounting and clamping, cost are low.
Description
Technical field
The present invention relates to fixture used in a kind of rectangular slat sheet-type test specimen tensile resistance e measurement technology, can be directed to
Tension test is done in concrete or cement base class material, both can guarantee that test specimen axial tension, and can ensures that test piece end will not break
Split destruction, more particularly to piece fixture used in tensile property e measurement technology under the high temperature conditions.
Background technology
In recent years, increasing people begins one's study the tensile property of Concrete Material, in general to measure coagulation
The tensile property of earthen materia, the length-width ratio of test specimen need to meet 2:1 or so proportionate relationship, such proportionate relationship can make stretching
Experiment is more prone to realize.
In the tensile test of test specimen, main difficulty is the clamping of test specimen.Test specimen is clamped according to clamping plate, utilizes test specimen
Friction power transmission between clamping plate, test specimen are easier to produce stress concentration, may result in fracture and often betide specimen holder
Position；If using the bonding power transmission between epoxy resin and test specimen, the phenomenon of unbalance stress, and epoxy resin may be produced
Glue can be melted under the high temperature conditions, and the tension test under high temperature and tension coupling can not be carried out to material；According to spiral shell
The mode of line connection, manufacturing procedure will become more sophisticated, and often unavoidably have space.Therefore existing coagulation great soil group
The fixture that material tensile test uses exists complicated, and clamping shortcomings, this shortcomings such as inconvenience all have very much
The failure of tension test may be caused.
With deeply requirement to the test fixture also more and more higher of research, in order to improve such case, the present invention passes through
Rectangular slat sheet-type test specimen is transformed, opens up hole in its end first, and using steel mesh piece at its end 1/4
Position carries out consolidation process, improves the tensile property of end, and its end will not occur to be broken, and ensures that tension failure occurs
In the range of test specimen effective length.
Fixture of the present invention consider as much as possible load action line should with tension test specimen axis on the same line,
Therefore between clamping plate inwall and test specimen insertion can bolt and nut, test specimen and clamping plate can be fixed by rotating adjusting nut, protect
Test specimen has been demonstrate,proved in drawing process axis tension, sliding and lateral bending phenomenon will not occur, it is more accurate that this allows for test result
Reliably, and this fixture convenient mounting and clamping, cost is relatively low, is easy to widely use.
The content of the invention
The purpose of invention is by transforming the weak point of existing stretching clamp, there is provided a kind of rectangular slat is thin
Template test specimen tensile test fixture, compared with existing fixture, the fixture can carry out tension test research under the high temperature conditions, knot
Structure is simple, convenient mounting and clamping and the effective phenomenon for avoiding stress concentration and discontinuity, has higher practical value.
What technical scheme was specifically realized in：
A kind of rectangular slat sheet-type test specimen tensile test fixture, the tensile test fixture include upper clamping part and lower clamping
Portion.
The upper clamping part includes top connector 1 and top clamping plate 2；Lower clamping part includes bottom connector 7 and bottom
Clamping plate 8.
The top connector 1 is connected with the upper end of cupping machine.The bottom connector 7 and cupping machine
Lower base is connected.
Pass through connection component phase between top connector 1 and cupping machine and bottom connector 7 and cupping machine
Even, connection component includes bolt and nut 3, bearing pin 4 and steel mesh piece 5.
The end of rectangular slat sheet-type test specimen 6 opens up hole, and the length of hole centre-to-centre spacing test piece end is grown for rectangle
The 1/8 of bar sheet-type piece lengths；In the casting process of rectangular slat sheet-type test specimen 6, compound steel net is set inside both ends
Piece 5, steel mesh piece 5 is deeply to the opening position of length 1/4 of rectangular slat sheet-type test specimen 6.
Pass through bolt between the steel mesh piece 5 and top connector 1 and top clamping plate 2 of the end of rectangular slat sheet-type test specimen 6
Nut 3 carries out the fixation of longitudinal height.
Bearing pin 4 is engaged with the hole of the end of rectangular slat sheet-type test specimen 6, completes top connector 1 and tension test
Lateral connection between machine and bottom connector 7 and cupping machine.
The one end of the bearing pin 4 sets nut, and the main body of bearing pin 4 is screw rod, and the size vertically of screw rod is gradually change
Small grading structure, it is easy to bearing pin 4 to penetrate top clamping plate 2 and rectangular slat sheet-type test specimen 6 and lower clamp block 8 and rectangle length
Bar sheet-type test specimen 6.
Rectangular slat sheet-type test specimen 6 is made up of fiber concrete material or cement-base composite material.
The end outer surface of rectangular slat sheet-type test specimen 6 is pasted with steel disc by epoxy resin, prevent end by
Break.
The clamping plate inwall mixes the bolt and nut 3 of detachable with test piece end void space, ensures that test specimen is being drawn
Sliding phenomenon will not occur during stretching and clamping plate inwall will not be touched.
The bottom connector is connected by tightening bolt with pedestal.
As seen from the above technical solution：In rectangular slat sheet-type piece fixture in the present invention, due to test piece end
It is to be reinforced using steel mesh piece, therefore tensile resistance experimental study can be carried out to test specimen under the high temperature conditions.With it is existing
Fixture both domestic and external is compared, and this clamp structure is simple, ensure that the axial tension of test specimen and sliding phenomenon will not occur, and filling
When pressing from both sides test specimen, only test specimen need to be directly inserted in, fix test specimen using bearing pin and bolt and nut, installation is quite convenient, has
Effect improves the accuracy and reliability of measurement data.
Brief description of the drawings
Fig. 1 is rectangular slat sheet-type test specimen tensile test clip overall schematic diagram.
Fig. 2 is rectangular slat sheet-type test specimen tensile test fixture left view.
Fig. 3 is rectangular slat sheet-type test specimen tensile test fixture middle and upper part joint and top clamping plate schematic diagram.
Fig. 4 is rectangular slat sheet-type test specimen tensile test fixture middle and upper part joint and top clamping plate left view.
Fig. 5 is that the bolt and nut that test specimen and clamping plate inwall are fixed in rectangular slat sheet-type test specimen tensile test fixture is illustrated
Figure.
Fig. 6 is bearing pin schematic diagram in rectangular slat sheet-type test specimen tensile test fixture.
Fig. 7 is rectangular slat sheet-type test specimen three-view diagram.
Fig. 8 is the bolt schematic diagram being connected in rectangular slat sheet-type test specimen tensile test fixture with pedestal.
Fig. 9 is the bolt top view being connected in rectangular slat sheet-type test specimen tensile test fixture with pedestal.
Figure 10 is rectangular slat sheet-type test specimen tensile test fixture middle and lower part connector and lower clamp block three-view diagram.
In Fig. 1：1- tops connector, 2- tops clamping plate, 3- bolt and nuts, 4- bearing pins, 5- steel meshes piece, 6- rectangular slats are thin
Template test specimen, 7- bottoms connector, 8- lower clamp blocks
Embodiment
In order to allow features described above of the invention and advantage can be more obvious understandable, below in conjunction with specific embodiment, to this hair
It is bright to be described in further detail.
As shown in figure 1, it is a kind of rectangular slat sheet-type test specimen tensile test clip overall schematic diagram of the present invention.
The specification of Instron high speed motive force loading system：VHS 160/100-20, its parameter are as follows：
Four column frames：1000KN；Maximum dynamic load：160KN；Maximum experiment impact load：100KN；Piston always rushes
Journey：300mm；Maximum tension (compression) impact velocity：20m/s.
Present clip is needed to match instrument upper end joint, and by DATA REASONING, fixture upper connection is arranged to
M48x2mm, screw thread depth 40mm.If the size of tension test specimen is：300x75x20mm, test piece end hole diameter are 20mm, test specimen
The distance of upper hole centre-to-centre spacing end is the 1/8 of piece lengths, i.e. 37.5mm.The effective length of test specimen is set to 150mm.
The thickness of the clamping part of upper lower plate is arranged to 20mm, and the gap among clamping plate is 30mm, test specimen and clamping plate clamping
Each gap for having reserved 2.5mm in portion inwall both sides, if at normal temperatures test if can in the range of test piece end 75mmx75mm,
With epoxy resin gluing knot 75x75x2mm steel disc, steel disc center opens up 16mm hole, so sets the contact surface of stretching to exist
On steel disc, by steel disc power transmission to test specimen, the situation that test piece end destroys is avoided.
If thinking to carry out tension test research under the high temperature conditions, steel mesh piece can be inserted into examination in test specimen manufacturing process
The end of part, test specimen inner homogeneous arrangement compound steel mesh sheet, the length of steel mesh piece is 75mm, width 75mm.
The head diameter of bearing pin is arranged to 28mm thickness 2.5mm, spiro rod length 80mm, a diameter of 20mm, screw end head
Need slightly to contract (to contract at away from termination 4mm, converging angles are 15 °), this operation be easy to bearing pin insertion clamping plate and
Test specimen.
It is 18mm to measure base-plate holes diameter, then can utilize M16, the bolt that length is 80mm by lower clamping part with
Pedestal is connected.
First upper connection 1 and lower connector bolt 7 are connected with cupping machine and pedestal respectively in experimentation, will be tried
Part is directed at the hole of top clamping plate 2 and lower clamp block 8, and test specimen is fixed on fixture with bearing pin 4, in order to prevent test specimen or so
Slide, then the space between test specimen and clamping plate inwall sets the bolt and nut 3 of 50mm height to combine, and all are ready
Start to test.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements done etc., should be included within the scope of protection of the invention with principle.
Claims (4)
- A kind of 1. rectangular slat sheet-type test specimen tensile test fixture, it is characterised in that：The tensile test fixture includes upper clamping Portion and lower clamping part；The upper clamping part includes top connector (1) and top clamping plate (2)；Lower clamping part include bottom connector (7) and under Portion's clamping plate (8)；The top connector (1) is connected with the upper end of cupping machine；The bottom connector (7) and cupping machine Lower base is connected；Top connector (1) passes through connection component phase with cupping machine and bottom connector (7) between cupping machine Even, connection component includes bolt and nut (3), bearing pin (4) and steel mesh piece (5)；The end of rectangular slat sheet-type test specimen (6) opens up hole, and the length of hole centre-to-centre spacing test piece end is rectangular slat The 1/8 of sheet-type piece lengths；In rectangular slat sheet-type test specimen (6) casting process, compound steel net is set inside both ends Piece (5), steel mesh piece (5) is deeply to the opening position of length 1/4 of rectangular slat sheet-type test specimen (6)；Pass through between the steel mesh piece (5) and top connector (1) and top clamping plate (2) of rectangular slat sheet-type test specimen (6) end Bolt and nut (3) carries out the fixation of longitudinal height；Bearing pin (4) is engaged with the hole of rectangular slat sheet-type test specimen (6) end, is completed top connector (1) and is tried with stretching Test the lateral connection of machine and bottom connector (7) between cupping machine.
- A kind of 2. rectangular slat sheet-type test specimen tensile test fixture according to claim 1, it is characterised in that：The pin The one end of axle (4) sets nut, and the main body of bearing pin (4) is screw rod, and the size vertically of screw rod is the graded junction tapered into Structure, is easy to that bearing pin 4 penetrates top clamping plate (2) and rectangular slat sheet-type test specimen (6) and lower clamp block (8) and rectangular slat is thin Template test specimen (6).
- A kind of 3. rectangular slat sheet-type test specimen tensile test fixture according to claim 1, it is characterised in that：Rectangle is grown Bar sheet-type test specimen (6) is made up of fiber concrete material or cement-base composite material.
- A kind of 4. rectangular slat sheet-type test specimen tensile test fixture according to claim 1, it is characterised in that：Rectangle is grown The end outer surface of bar sheet-type test specimen (6) is pasted with steel disc by epoxy resin, prevents end from being broken.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710861280.9A CN107449661B (en) | 2017-09-21 | 2017-09-21 | Rectangular strip thin plate type test piece tensile test clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710861280.9A CN107449661B (en) | 2017-09-21 | 2017-09-21 | Rectangular strip thin plate type test piece tensile test clamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107449661A true CN107449661A (en) | 2017-12-08 |
| CN107449661B CN107449661B (en) | 2023-08-11 |
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ID=60497245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710861280.9A Active CN107449661B (en) | 2017-09-21 | 2017-09-21 | Rectangular strip thin plate type test piece tensile test clamp |
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| Country | Link |
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| CN (1) | CN107449661B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108918256A (en) * | 2018-05-24 | 2018-11-30 | 郑州大学 | High-hardness stainless steel fringe enhances ECC direct tensile test fixture and test method |
| CN109187173A (en) * | 2018-09-05 | 2019-01-11 | 华南理工大学 | A kind of auxiliary clamp and its application method of hydrogel tension test |
| CN111289327A (en) * | 2020-03-16 | 2020-06-16 | 烟台宏远氧业股份有限公司 | Resin film test piece for DMA (direct memory Access) test and preparation method thereof |
| CN112359182A (en) * | 2020-11-09 | 2021-02-12 | 燕山大学 | Make things convenient for high temperature singly to draw sample quenching treatment's anchor clamps |
| CN113125269A (en) * | 2021-06-21 | 2021-07-16 | 江西江铃专用车辆厂有限公司 | Device for detecting performance of all-aluminum lightweight container board and using method |
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| CN101650283A (en) * | 2009-09-11 | 2010-02-17 | 北京工业大学 | Mould for forming axial tensile-strength test piece of cement-based material and test method |
| CN102507317A (en) * | 2011-10-21 | 2012-06-20 | 江苏博特新材料有限公司 | Embedded concrete limit tension test device and concrete sample reinforcing method |
| CN205067219U (en) * | 2015-10-12 | 2016-03-02 | 扬州大学 | ECC axial tension anchor clamps |
| CN207163818U (en) * | 2017-09-21 | 2018-03-30 | 北京工业大学 | A kind of rectangular slat sheet-type test specimen tensile test fixture |
-
2017
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH06109609A (en) * | 1992-09-24 | 1994-04-22 | Nissan Motor Co Ltd | Chucking jig for biaxial tensile test of thin-plate material and biaxial tensile test method |
| CN101650283A (en) * | 2009-09-11 | 2010-02-17 | 北京工业大学 | Mould for forming axial tensile-strength test piece of cement-based material and test method |
| CN102507317A (en) * | 2011-10-21 | 2012-06-20 | 江苏博特新材料有限公司 | Embedded concrete limit tension test device and concrete sample reinforcing method |
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| CN207163818U (en) * | 2017-09-21 | 2018-03-30 | 北京工业大学 | A kind of rectangular slat sheet-type test specimen tensile test fixture |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108918256A (en) * | 2018-05-24 | 2018-11-30 | 郑州大学 | High-hardness stainless steel fringe enhances ECC direct tensile test fixture and test method |
| CN109187173A (en) * | 2018-09-05 | 2019-01-11 | 华南理工大学 | A kind of auxiliary clamp and its application method of hydrogel tension test |
| CN109187173B (en) * | 2018-09-05 | 2023-08-22 | 华南理工大学 | Auxiliary clamp for hydrogel tensile test and application method thereof |
| CN111289327A (en) * | 2020-03-16 | 2020-06-16 | 烟台宏远氧业股份有限公司 | Resin film test piece for DMA (direct memory Access) test and preparation method thereof |
| CN112359182A (en) * | 2020-11-09 | 2021-02-12 | 燕山大学 | Make things convenient for high temperature singly to draw sample quenching treatment's anchor clamps |
| CN112359182B (en) * | 2020-11-09 | 2021-08-20 | 燕山大学 | Make things convenient for high temperature singly to draw sample quenching treatment's anchor clamps |
| CN113125269A (en) * | 2021-06-21 | 2021-07-16 | 江西江铃专用车辆厂有限公司 | Device for detecting performance of all-aluminum lightweight container board and using method |
| CN113125269B (en) * | 2021-06-21 | 2021-09-03 | 江西江铃专用车辆厂有限公司 | Device for detecting performance of all-aluminum lightweight container board and using method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107449661B (en) | 2023-08-11 |
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