CN206772698U - A kind of composite interlayer testing device for shear strength - Google Patents
A kind of composite interlayer testing device for shear strength Download PDFInfo
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- CN206772698U CN206772698U CN201720535715.6U CN201720535715U CN206772698U CN 206772698 U CN206772698 U CN 206772698U CN 201720535715 U CN201720535715 U CN 201720535715U CN 206772698 U CN206772698 U CN 206772698U
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- bearing
- hold
- guide cylinder
- shear strength
- support
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Abstract
It the utility model is related to a kind of composite interlayer testing device for shear strength, including guide cylinder, the bearing in guide cylinder, the fixing device for fixed guide cylinder and bearing, the guide cylinder surrounding is symmetrically provided with four guide grooves, and the fixing device connects guide cylinder and bearing by guide groove；The bearing forms with structure identical hold-down support and movable bearing support；Groove is provided with the interface of the hold-down support and movable bearing support；The hold-down support is connected with movable bearing support by fixing device；Hold-down support and the movable bearing support outer surface is provided with the screwed hole perpendicular to groove.The utility model has the advantages that simple in construction, convenient disassembly, efficiency high, effectively prevent influence of the C/SiC and SiC/SiC composite breach machining accuracies to test result.
Description
Technical field
It the utility model is related to a kind of composite interlayer testing device for shear strength.
Background technology
Carbon fiber reinforced carbon matrix composite material (C/C composites), carbon fibre reinforced silicon carbide matrix composite (C/
SiC ceramic matrix composite material) and silicon carbide fiber reinforced silicon carbide matrix composite (SiC/SiC) has that density is low, mechanical property is excellent
Different, the features such as anti-yaw damper is functional, thermal capacitance is big, anti-thermal shock, chemical stability are good, specific modulus and fracture toughness are high, in aviation
The application of space flight, chemical industry and field of traffic is more and more extensive.
In the research and development of above-mentioned composite, the test to its tensile strength, bending strength, compressive strength and shear strength
It is most important.When testing the interlaminar shear strength of C/C, C/SiC, SiC/SiC composite, typically surveyed using short branch beam deflection
Examination method or DEN beam shearing test.Main Basiss DIN EN 658-5 or ASTM C1425 standards during test.Adopting
When being tested with the sample of short strutbeam form, because the stress form of sample is complicated, comprising bending load, tensile load and cut
Cut load, cause the shear strength value of composite higher, this design for composite structure be it is extreme enter, to component
Safety it is unfavorable., it is necessary to be processed in the above and below of sample at a distance of 6mm when being tested using the sample of DEN beam form
The breach that width is 0.5 ± 0.05mm, depth is 0.5 times of thickness value.The width and depth of breach are cut to final composite
The test of shearing stress is most important.For C/C composites, its processability is preferable, still can guarantee that machining accuracy.For C/SiC
High with SiC/SiC composites, its hardness, mechanical processing difficulty is big, the gap width of shear strength test sample and depth
Machining accuracy it is difficult to ensure that.
The existing U of the file of issued patents CN 203083891 disclose a kind of shear strength tester, with the utility model
Structure is different, and it solves the problems, such as to be mainly testing standard disunity, operation inconvenience, Instrument Manufacturing Technique is numerous and diverse, tests knot
The problems such as fruit is unreliable, solved the problems, such as with the utility model incomplete same.
Utility model content
The purpose of this utility model is lacking for C/C, C/SiC and SiC/SiC the Shear Strength of Composite Materials test sample
A kind of the problem of mouth processing difficulties, machining accuracy are difficult to ensure that, there is provided, simple in construction, convenient disassembly, without processing sample breach
Composite interlayer testing device for shear strength.
To achieve the above object, the utility model provides following technical scheme：
A kind of composite interlayer testing device for shear strength, including guide cylinder, the bearing in guide cylinder, for solid
Determine the fixing device of guide cylinder and bearing；
Further, the guide cylinder surrounding is symmetrically provided with four guide grooves, and the fixing device is connected by guide groove
Guide cylinder and bearing；
Further, the bearing forms with structure identical hold-down support and movable bearing support；
Further, groove is provided with the interface of the hold-down support and movable bearing support, it is that placement is to be tested that it, which is acted on,
Sample；
Further, the hold-down support is connected with movable bearing support by fixing device；The hold-down support and activity are propped up
Seat outer surface is provided with the screwed hole perpendicular to groove, and the effect of screwed hole is fastening sample to be tested, prevents sample to be tested from testing
Position changes in set-up procedure.
Further, the fixing device is fastening bolt, for fastening sample to be tested.
Further, the hold-down support includes vertical component and horizontal component, and the vertical component is diameter 30mm, high
40mm 1/2 cylinder is spent, horizontal component is diameter 30mm, height 10mm cylinder；The groove is opened in the hold-down support and hung down
Straight part.
Further, the guide cylinder is internal diameter 30mm, wall thickness 5mm, high 50mm cylinder, and is symmetrically opened in cylinder surrounding
It is 8mm to have four width, and depth is 35mm guide groove, and the effect of guide cylinder is mainly that hold-down support and movable bearing support provide branch
Support, constrains its lateral displacement.
Further, the fastening bolt size is M8.
Preferably, the material of the guide cylinder and bearing is stainless steel.
The beneficial effects of the utility model are：
A kind of composite interlayer testing device for shear strength, simple in construction disclosed in the utility model, convenient disassembly, effect
Rate is high, effectively prevent influence of the C/SiC and SiC/SiC composite breach machining accuracies to test result.
Brief description of the drawings
In order to illustrate more clearly of the utility model embodiment technical scheme, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only the utility model in order to more clearly
Illustrate the utility model embodiment or technical scheme of the prior art, below will be to needed for embodiment or description of the prior art
The accompanying drawing to be used is briefly described, and for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is internal structure schematic diagram of the present utility model；
Fig. 2 is scheme of installation of the present utility model；
Fig. 3 is the structural representation of the utility model guide cylinder；
Fig. 4 is the structural representation of the utility model hold-down support.
Embodiment
A kind of composite interlayer testing device for shear strength, including guide cylinder 1, the bearing 2 in guide cylinder, are used for
The fixing device 3 of fixed guide cylinder 1 and bearing 2, the surrounding of guide cylinder 1 are symmetrically provided with four guide grooves, the fixing device 3
Guide cylinder 1 and bearing 2 are connected by guide groove；
Further, the bearing 2 forms with structure identical hold-down support 21 and movable bearing support 22；
Further, the groove 4 for placing sample 6 is provided with the interface of the hold-down support 21 and movable bearing support 22；
Further, the hold-down support 21 and movable bearing support 22 are connected by fixing device 3；
Further, hold-down support 21 and movable bearing support 22 outer surface is provided with the screwed hole 5 perpendicular to groove 4.
Further, the fixing device 3 is fastening bolt, for fastening sample to be tested 6.
Further, the hold-down support 21 includes vertical component and horizontal component, and the vertical component is diameter 30mm,
Height 40mm 1/2 cylinder, horizontal component are diameter 30mm, height 10mm cylinder；The groove 4 is opened in the hold-down support
21 vertical components.
Further, the guide cylinder 1 is internal diameter 30mm, wall thickness 5mm, high 50mm cylinder, and symmetrical in cylinder surrounding
It is 8mm to be provided with four width, and depth is 35mm guide groove, and the effect of guide cylinder is mainly hold-down support 21 and movable bearing support 22
Support is provided, constrains its lateral displacement.
Further, the fastening bolt size is M8.
Preferably, the material of the guide cylinder 1 and bearing 2 is stainless steel.
Application method is as follows：
1st, fixing device 3 and hold-down support 21, movable bearing support 22 are assembled together by screwed hole；
The 2nd, composite interlayer shear strength test sample 6 is placed on to the groove 4 of hold-down support 21 and movable bearing support 22
It is interior.
3rd, by adjusting fixing device 3, position of the fixed sample 6 in bearing groove 4；
4th, the sample 6 assembled in step 3 and bearing 2 are put into guide cylinder 1 along guide groove.
5th, the device assembled in step 4 is placed on testing machine for mechanical properties and carries out performance test.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc., the utility model should be included in
Protection domain within.
Claims (6)
1. a kind of composite interlayer testing device for shear strength, including guide cylinder (1), the bearing (2) in guide cylinder, use
In the fixing device (3) of fixed guide cylinder (1) and bearing (2), it is characterised in that：
Guide cylinder (1) surrounding is symmetrically provided with four guide grooves, and the fixing device (3) connects guide cylinder by guide groove
And bearing (2) (1)；
The bearing (2) forms with structure identical hold-down support (21) and movable bearing support (22)；
The groove (4) for placing sample (6) is provided with the interface of the hold-down support (21) and movable bearing support (22)；
The hold-down support (21) and movable bearing support (22) are connected by fixing device (3)；
The hold-down support (21) and movable bearing support (22) outer surface are provided with the screwed hole (5) perpendicular to groove (4).
A kind of 2. composite interlayer testing device for shear strength according to claim 1, it is characterised in that the fixation
Device (3) is two fastening bolts for being used to fix sample (6).
A kind of 3. composite interlayer testing device for shear strength according to claim 1, it is characterised in that the fixation
Bearing (21) includes vertical component and horizontal component, and the vertical component is diameter 30mm, and height 40mm 1/2 cylinder is described
Horizontal component is diameter 30mm, height 10mm cylinder, and the groove (4) is opened in the hold-down support (21) vertical component.
A kind of 4. composite interlayer testing device for shear strength according to claim 1, it is characterised in that the guiding
Cylinder (1) is internal diameter 30mm, and wall thickness 5mm, high 50mm cylinder, the guide groove is 8mm, and depth is 35mm U-type groove.
A kind of 5. composite interlayer testing device for shear strength according to claim 2, it is characterised in that the fastening
Bolt sizes are M8.
6. a kind of composite interlayer testing device for shear strength according to any one of Claims 1-4, its feature exist
In the material of the guide cylinder (1) and bearing (2) is stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720535715.6U CN206772698U (en) | 2017-05-16 | 2017-05-16 | A kind of composite interlayer testing device for shear strength |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720535715.6U CN206772698U (en) | 2017-05-16 | 2017-05-16 | A kind of composite interlayer testing device for shear strength |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206772698U true CN206772698U (en) | 2017-12-19 |
Family
ID=60640944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720535715.6U Expired - Fee Related CN206772698U (en) | 2017-05-16 | 2017-05-16 | A kind of composite interlayer testing device for shear strength |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206772698U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108344632A (en) * | 2018-01-17 | 2018-07-31 | 北京航空航天大学 | A kind of extremely low modulus composite material interlayer shearing clamp and test method |
| CN108548719A (en) * | 2018-03-07 | 2018-09-18 | 北京航空航天大学 | A kind of composite material interlayer normal strength test method |
| CN114486562A (en) * | 2021-12-30 | 2022-05-13 | 长春长光宇航复合材料有限公司 | Device and method for testing shear strength of composite material |
-
2017
- 2017-05-16 CN CN201720535715.6U patent/CN206772698U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108344632A (en) * | 2018-01-17 | 2018-07-31 | 北京航空航天大学 | A kind of extremely low modulus composite material interlayer shearing clamp and test method |
| CN108548719A (en) * | 2018-03-07 | 2018-09-18 | 北京航空航天大学 | A kind of composite material interlayer normal strength test method |
| CN114486562A (en) * | 2021-12-30 | 2022-05-13 | 长春长光宇航复合材料有限公司 | Device and method for testing shear strength of composite material |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171219 Termination date: 20210516 |
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| CF01 | Termination of patent right due to non-payment of annual fee |