CN207586048U - A kind of fibre reinforced composites interface shear strength testboard - Google Patents
A kind of fibre reinforced composites interface shear strength testboard Download PDFInfo
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- CN207586048U CN207586048U CN201721801554.7U CN201721801554U CN207586048U CN 207586048 U CN207586048 U CN 207586048U CN 201721801554 U CN201721801554 U CN 201721801554U CN 207586048 U CN207586048 U CN 207586048U
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Abstract
The utility model belongs to composite material interface shear strength test field, discloses a kind of fibre reinforced composites interface shear strength testboard.Including pedestal, left slider, right sliding block, left cushion block and right cushion block；Section is offered on pedestal as open-topped convex shape sliding slot；Left slider and right sliding block are symmetrical, and left slider includes the supporting table set up vertically, and supporting table bottom vertical left is fixed with fixed station, the first vertical through-hole is offered on fixed station；Left cushion block is identical with right cushion block structure, and left cushion block is the rectangular block being adapted with the slot bottom of convex shape sliding slot, and the second vertical through-hole is offered in the middle part of left cushion block, and the first vertical through-hole is identical with the internal diameter of the second vertical through-hole；Left cushion block and right cushion block are positioned over the slot bottom of convex shape sliding slot, and left slider and right sliding block then run through positioned at face above and below the first vertical through-hole and the second vertical through-hole of the upper surface of pedestal and homonymy is inserted with positioning pin.The utility model can determine the number of fiber for being ejected or being pressed into during test.
Description
Technical field
The utility model belongs to composite material interface shear strength test field, and in particular to a kind of fiber-reinforced composite material
Expect interface shear strength testboard.
Background technology
Interface structure is extremely complex, need from the surface nature, form, fibre reinforcement of fibre reinforcement with
Microstructure, interface performance and the composite material combination property at interface are explored in interaction, interfacial reaction between matrix etc.
Between relationship, so as to for composite property optimize, interface base support is provided.Influencing composite material combination property
Many factors in, the influence of the interface cohesion situation between fiber-matrix is the most prominent, therefore the quantitative table of interface bond strength
Sign seems particularly significant.
According to composite sample type and measurement scale, the method for measuring fibre reinforced composites boundary strength can divide
For macro approach and thin sight two class of method.It is compared with macro approach, thin method of seeing is more directly and accurate, compound more suitable for characterizing
The interface shear strength of material.
It measures between fiber and matrix there are many kinds of the mesoscale experiments methods of boundary strength at present, wherein using at most main
Have：Fiber pullout tests, the experiment of microballon unsticking, fiber indentation test and fiber ejection experiment.
Fiber pullout tests are a kind of direct methods for measuring interface parameter, can measure boundary strength and interface friction system
Number.But in this method, the stress distribution in sample is more complicated than shear lag analysis, and the boundary strength error of calculating is larger.Secondly,
During test, load is acted directly on fiber rather than is acted on matrix, larger with actual conditions difference.Third, this method
The bigger fiber of fibre diameter is only used for, it is for the smaller fiber of diameter, then helpless.
The supplement when experiment of microballon unsticking is hard to work to Single fiber pull-out test, but the experiment of microballon unsticking is only suitable for
The test of polymer matrix composites.
Fiber pullout tests and the experiment of microballon unsticking are mainly used for the test of the model sample of making in laboratory.Composite material
Preparation process formation at interface between fiber-matrix has a significant impact, this causes the composite material model of making in laboratory
Sample and the composite material of practical application have bigger difference.
Fiber ejection experiment and indentation test can both use the sample of making in laboratory, can also directly use from reality
Sample is intercepted in composite material.Thus, both test methods can be used for the test of fiber reinforced ceramic-base interface shear strength,
The result especially obtained can be used directly to instruct the design of practice of composite.
Fiber eject and indentation test principle be under an optical microscope by means of precision positioning mechanism, it is micro- by diamond
Small probe applies axial compressive force to the single fiber selected in composite sample, and boundary occurs with matrix so as to obtain compression fibre
Axial load when emaciated face is viscous, calculates interface shear strength.In the test process of entire interface shear strength, fiber ejection
Key effect is played with the testboard of indentation test.
Realize fibre reinforced composites interface shear strength test during, following factor have to test result compared with
It is big to influence：
（1）The fixation of fibre reinforced composites thin slice：Fiber is ejected with during indentation test, and entire sample surrounding must
It must be in the state being completely fixed；
（2）The control of testboard narrow slit：The size of testboard narrow slit is mainly used in Control experiment how many root fiber can
To be ejected or be pressed into.
Utility model content
The purpose of this utility model is to provide the fibers that can determine the number of fiber for being ejected or being pressed into during a kind of test
Enhance composite material interface shear strength test platform.
To achieve the above object, the technical solution that the utility model is taken is as follows：
A kind of fibre reinforced composites interface shear strength testboard：Including pedestal, left slider, right sliding block, left cushion block,
Right cushion block；Section is offered as open-topped convex shape sliding slot by left end to right end on pedestal；Left slider and right sliding block are a left side
Right symmetrical structure, left slider include the supporting table set up vertically, and supporting table bottom vertical left is fixedly connected with fixed station, fixed
The first vertical through-hole is from top to bottom offered on platform；Left cushion block is identical with the structure of right cushion block, and left cushion block is and convex shape sliding slot
The rectangular block that is adapted of slot bottom, offer the second vertical through-hole in the middle part of left cushion block, the first vertical through-hole and second vertical
The internal diameter of through-hole is identical；Left cushion block and right cushion block are respectively placed in the slot bottom of convex shape sliding slot, and left slider and right sliding block are then distinguished
It is set positioned at face above and below the first vertical through-hole and the second vertical through-hole of the upper surface of pedestal and homonymy, it is vertical logical by first
Hole is run through to the second vertical through-hole is inserted with positioning pin.
Preferably, pedestal is cylinder.
Preferably, supporting table is integrally formed with fixed station.
Preferably, the bottom of fixed station offers the groove being adapted with the groove top of convex shape sliding slot by left end to right end,
First vertical through-hole is connected with bottom groove.
Preferably, positioning pin is bolt, and the first vertical through-hole and the second vertical through-hole are both provided with matched with bolt
Internal thread.
Further, for convenience of the fixation of fibre reinforced composites thin slice, pedestal, left slider, right sliding block, left cushion block and
The material of right cushion block is 316 stainless steels, and the thermal conductivity of 316 stainless steels is good, during test, by the utility model fiber-reinforced composite
Material interface shear strength test platform is placed on warm table, and sample to be tested can be adhesively fixed on to left slider and right cunning with paraffin
On block.
The utility model has the positive effect that：
1st, the gap width in the utility model between the supporting table of left slider, right sliding block is testboard slit width,
Slit width can be processed, be adjusted as needed, slit width 0-30mm, precision 0.002mm, it can coordinate spiral micrometer
Meter, vernier caliper, the slit width of accurate determining testboard, and then determine to test the fibrous root that can be ejected or be pressed into every time
Number；
2nd, sample to be tested is pasted in the supporting table of left slider, right sliding block, efficiently solves consolidating for sample in test process
Determine problem；
3rd, the utility model is simple in structure, and price is low, can use for a long time, has good economic benefit.
Description of the drawings
Fig. 1：The general structure schematic diagram of the utility model；
Fig. 2：The structure diagram of pedestal；
Fig. 3：The structure diagram of left slider；
Fig. 4：The structure diagram of left cushion block；
Wherein, reference numeral is：1- pedestals, 11- convex shape sliding slots, 2- left sliders, 21- supporting tables, 22- fixed stations, 23-
Groove, the first vertical through-holes of 24-, the right sliding blocks of 3-, the left cushion blocks of 4-, the second vertical through-holes of 41-, 5- bolts, 6- samples to be tested.
Specific embodiment
Below in conjunction with specific embodiment, the utility model is described further.It should be understood that following embodiment is only used for
The range that bright the utility model rather than limits the present invention.
Embodiment 1
As shown in Fig. 1 ~ 4, a kind of fibre reinforced composites interface shear strength testboard：Including cylindrical base 1, a left side
Sliding block 2, right sliding block 3, left cushion block 4 and right cushion block；Section is offered as open-topped convex shape by left end to right end on pedestal 1
Sliding slot 11；Left slider 2 and right sliding block 3 are bilateral symmetry, and left slider 2 includes the supporting table 21 set up vertically, supporting table 21
Bottom vertical left is offered and convex shape sliding slot 11 integrally formed with fixed station 22, the bottom of fixed station 22 by left end to right end
The groove 23 that is adapted of groove top, from top to bottom offer the first vertical through-hole being connected with bottom groove 23 on fixed station 22
24；Left cushion block 4 is identical with the structure of right cushion block, and left cushion block 4 is the rectangular block being adapted with the slot bottom of convex shape sliding slot 11, left
The middle part of cushion block 4 offers the second vertical through-hole 41；First vertical 24 and second vertical through-hole 41 of through-hole is both provided with internal thread,
First vertical through-hole 24 is identical with the internal diameter of the second vertical through-hole 41；Left cushion block 4 and right cushion block are placed in convex shape sliding slot 11
Slot bottom, left slider 2 and right sliding block 3 are then respectively positioned at the upper surface of pedestal 1 and the first vertical through-hole 24 and second of homonymy
The face setting about 41 of vertical through-hole, runs through from the first vertical through-hole 24 to the second vertical through-hole 41 and is inserted with bolt 5；Pedestal 1,
Left slider 2, right sliding block 3, left cushion block 4 and right cushion block material be 316 stainless steels.
During test, the position of left cushion block 4 and right cushion block in convex shape sliding slot 11 is first moved left and right, adjusts left slider 2
Entire testboard, is then positioned on warm table by the width of narrow slit between right sliding block 3, is fixed sample to be tested 6 with paraffin
On left slider 2 and right sliding block 3, blend rubber pad gently flattens；Close the power supply of warm table, the survey to be installed for having sample to be tested 6
It is positioned on nano-hardness tester operation console after test stand cooling, according to the operating instruction setting test parameter of nano-hardness tester, chooses
Test fiber, you can smoothly complete the test of fibre reinforced composites interface shear strength.
The above is only the preferred embodiments of the utility model, and the utility model is not made in any form
Limitation, it is every according to the technical essence of the utility model to above example made it is any it is simple modification, equivalent variations with
Modification, still falls in the protection domain of technical solutions of the utility model.
Claims (6)
1. a kind of fibre reinforced composites interface shear strength testboard, it is characterised in that：Including pedestal, left slider, right cunning
Block, left cushion block, right cushion block；Section is offered as open-topped convex shape sliding slot by left end to right end on pedestal；Left slider and
Right sliding block is bilateral symmetry, and left slider includes the supporting table set up vertically, and supporting table bottom vertical left is fixedly connected with
Fixed station from top to bottom offers the first vertical through-hole on fixed station；Left cushion block is identical with the structure of right cushion block, left cushion block be with
The rectangular block that the slot bottom of convex shape sliding slot is adapted offers the second vertical through-hole, the first vertical through-hole in the middle part of left cushion block
It is identical with the internal diameter of the second vertical through-hole；Left cushion block and right cushion block are respectively placed in the slot bottom of convex shape sliding slot, left slider and the right side
Sliding block is then set positioned at face above and below the first vertical through-hole and the second vertical through-hole of the upper surface of pedestal and homonymy respectively, by
First vertical through-hole runs through to the second vertical through-hole is inserted with positioning pin.
2. fibre reinforced composites interface shear strength testboard as described in claim 1, it is characterised in that：Pedestal is circle
Cylindricality.
3. fibre reinforced composites interface shear strength testboard as described in claim 1, it is characterised in that：Supporting table with
Fixed station is integrally formed.
4. fibre reinforced composites interface shear strength testboard as described in claim 1, it is characterised in that：Fixed station
Bottom offers the groove being adapted with the groove top of convex shape sliding slot, the first vertical through-hole and bottom groove phase by left end to right end
Connection.
5. fibre reinforced composites interface shear strength testboard as described in claim 1, it is characterised in that：Positioning pin is
Bolt, the first vertical through-hole and the second vertical through-hole are both provided with and the matched internal thread of bolt.
6. such as any one of them fibre reinforced composites interface shear strength testboard of claim 1 ~ 5, feature exists
In：Pedestal, left slider, right sliding block, left cushion block and right cushion block material be 316 stainless steels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721801554.7U CN207586048U (en) | 2017-12-21 | 2017-12-21 | A kind of fibre reinforced composites interface shear strength testboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721801554.7U CN207586048U (en) | 2017-12-21 | 2017-12-21 | A kind of fibre reinforced composites interface shear strength testboard |
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| CN207586048U true CN207586048U (en) | 2018-07-06 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111189703A (en) * | 2020-01-13 | 2020-05-22 | 南京航空航天大学 | Device and method for testing interface shear strength of continuous fiber reinforced composite material |
| CN112730045A (en) * | 2020-12-21 | 2021-04-30 | 中南大学 | Shearing clamp and application method thereof |
| CN115144255A (en) * | 2022-07-05 | 2022-10-04 | 郑州大学 | Test auxiliary device that unidirectional fiber combined material interlaminar shear strength distributes |
-
2017
- 2017-12-21 CN CN201721801554.7U patent/CN207586048U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111189703A (en) * | 2020-01-13 | 2020-05-22 | 南京航空航天大学 | Device and method for testing interface shear strength of continuous fiber reinforced composite material |
| CN111189703B (en) * | 2020-01-13 | 2021-04-20 | 南京航空航天大学 | Auxiliary device and method of composite material interface shear strength testing device |
| CN112730045A (en) * | 2020-12-21 | 2021-04-30 | 中南大学 | Shearing clamp and application method thereof |
| CN115144255A (en) * | 2022-07-05 | 2022-10-04 | 郑州大学 | Test auxiliary device that unidirectional fiber combined material interlaminar shear strength distributes |
| CN115144255B (en) * | 2022-07-05 | 2023-08-15 | 郑州大学 | Auxiliary device for testing interlaminar shear strength distribution of unidirectional fiber composite material |
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Effective date of registration: 20200904 Address after: Hu pocun Zhanjie town Gongyi city 451261 Henan city of Zhengzhou Province Patentee after: GONGYI VAN-RESEARCH YIHUI COMPOSITE MATERIAL Co.,Ltd. Address before: 710075, No. 7, unit 1, unit 12505, No. 7, high and new hi-tech zone, Yanta District, Shaanxi Province Patentee before: XI'AN RESPRO APPLIED MATERIALS Co.,Ltd. |