CN113176202A - Interlayer bonding strength test system based on oblique shear force - Google Patents
Interlayer bonding strength test system based on oblique shear force Download PDFInfo
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- CN113176202A CN113176202A CN202110334501.3A CN202110334501A CN113176202A CN 113176202 A CN113176202 A CN 113176202A CN 202110334501 A CN202110334501 A CN 202110334501A CN 113176202 A CN113176202 A CN 113176202A
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- 238000012360 testing method Methods 0.000 title claims abstract description 41
- 239000011229 interlayer Substances 0.000 title claims abstract description 24
- 238000003825 pressing Methods 0.000 claims abstract description 40
- 238000010008 shearing Methods 0.000 claims description 5
- 238000007718 adhesive strength test Methods 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 239000010426 asphalt Substances 0.000 description 5
- 238000001514 detection method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The application relates to an interlayer bonding strength testing system based on an oblique shear force, which comprises a first base; the first fixing grooves are arranged on the first base at intervals, and the adjacent first fixing grooves are parallel to each other; the first fixing seat is inserted on the first base through the first fixing groove; the placing groove is arranged on the first fixing seat and used for placing a sample; the second base is provided with a plurality of second fixing grooves which are arranged on the second base at intervals, and the adjacent second fixing grooves are parallel to each other; the first pressing plate is inserted into the second base through the second fixing groove and is not parallel to the second base, the second pressing plate is arranged on the first pressing plate, and the first pressing plate is used for applying pressure to the sample in the placing groove. The application can assist in detecting the interlayer bonding strength of the sample under the oblique shear force.
Description
Technical Field
The application relates to the technical field of detection equipment, in particular to an interlayer bonding strength test system based on oblique shear force.
Background
In the test process of bonding strength between the layer, need use the press to provide pressure, the press has two kinds of horizontal formulas and vertical formula, can deal with the part and detect the operating mode, but can not directly carry out the test of oblique shear force.
Disclosure of Invention
The application provides an interlaminar bonding strength test system based on oblique shear force can assist the interlaminar bonding strength of detection sample under oblique shear force.
The following technical scheme is used in the application:
an interlaminar bond strength testing system based on oblique shear force, comprising:
a first base;
the first fixing grooves are arranged on the first base at intervals, and the adjacent first fixing grooves are parallel to each other;
the first fixing seat is inserted on the first base through the first fixing groove;
the placing groove is arranged on the first fixing seat and used for placing a sample;
the second base is provided with a plurality of second fixing grooves which are arranged on the second base at intervals, and the adjacent second fixing grooves are parallel to each other;
the first pressing plate is inserted on the second base through the second fixing groove and is not parallel to the second base; and
the second pressing plate is arranged on the first pressing plate and used for applying pressure to the sample in the placing groove;
when the first fixing seat is connected with different first fixing grooves, included angles between the placing grooves and the first base are different; when the first pressing plate is connected with different second fixing grooves, the included angles of the second pressing plate and the second base are different.
Through adopting above-mentioned technical scheme, when first base was close to the second base, the second clamp plate with can take place to slide for first fixing base, will exert the horizontal or perpendicular pressure decomposition on the sample, under the prerequisite that does not change pressure equipment, just can test the sample interlayer joint strength under this angle.
In one possible implementation manner of the present application, the first fixing groove is dovetail-shaped or T-shaped.
Through adopting above-mentioned technical scheme, given the multiform of first fixed slot, can satisfy different user demands.
In one possible implementation manner of the present application, the second fixing groove is dovetail-shaped or T-shaped.
Through adopting above-mentioned technical scheme, given the multiform of first fixed slot, can satisfy different user demands.
In one possible implementation manner of the present application, the cross-sectional shape of the placing groove is a circle, and the working surface of the second pressing plate is an arc surface.
By adopting the technical scheme, the cylindrical test sample can be tested.
In one possible implementation of the application, the radius of curvature of the working surface of the second pressure plate is equal to the radius of the placement groove.
By adopting the technical scheme, the contact area with the cylindrical sample can be increased, and the detection is more attached to the actual working scene.
In one possible implementation manner of the present application, the cross-sectional shape of the placing groove is rectangular, and the working surface of the second pressing plate is a plane.
By adopting the technical scheme, the rectangular test sample can be tested.
In one possible implementation manner of the present application, the second pressing plate is symmetrically provided with guide plates;
the second pressing plate is abutted against the first fixing seat and slides relative to the first fixing seat.
By adopting the technical scheme, the relative sliding between the second pressing plate and the sample can be reduced.
In a possible implementation manner of the present application, an observation hole is formed in the first fixing seat, and the observation hole is communicated with the placing groove.
By adopting the technical scheme, the side face of the sample can be seen through the observation hole, so that whether the position of the sample is proper or not is determined, and the sample is convenient to adjust.
Drawings
Fig. 1 is a schematic usage diagram of a test system according to an embodiment of the present application.
Fig. 2 is a schematic diagram of an internal structure of the test system shown in fig. 1.
Fig. 3 is a schematic structural diagram of a first base according to an embodiment of the present disclosure.
Fig. 4 is a schematic structural diagram of a first base according to an embodiment of the present disclosure.
Fig. 5 is a schematic structural diagram of a first fixing seat according to an embodiment of the present application.
Fig. 6 is a schematic structural view of the first fixing seat given based on fig. 5.
Fig. 7 is a schematic diagram of a positional relationship between a second pressing plate and a guide plate according to an embodiment of the present application.
In the figure, 11, a first base, 12, a first fixing groove, 13, a first fixing seat, 14, a placing groove, 15, an observation hole, 21, a second base, 22, a second fixing groove, 23, a first pressing plate, 24, a second pressing plate, 25 and a guide plate.
Detailed Description
The technical solution of the present application will be described in further detail below with reference to the accompanying drawings.
In order to more clearly understand the technical scheme in the application, firstly, a simple introduction is made to an asphalt road, the asphalt road mainly comprises a base layer, an asphalt pavement layer, a composite pavement layer and the like, the layers are bonded together to provide the required performance of the asphalt road, and the interlayer bonding strength of the asphalt road needs to be detected in consideration of the influence of various factors in the construction process.
Referring to fig. 1 and 2, in order to disclose an interlayer bonding strength testing system based on oblique shear force according to an embodiment of the present application, the system mainly includes a first base 11, a first fixing seat 13, a second base 21, a first pressing plate 23, and a second pressing plate 24, and referring to fig. 3, a plurality of first fixing grooves 12 are formed in the first base 11, the first fixing grooves 12 are all formed in the same surface of the first base 11 and are parallel to each other, and from another perspective, two adjacent first fixing grooves 12 are also parallel to each other, and a gap exists between two adjacent first fixing grooves 12.
The first fixing seat 13 is inserted into the first base 11 through the first fixing groove 12, and when the first fixing seat is inserted into different first fixing grooves 12, included angles between the first fixing seat 13 and the first base 11 are different, for example, the number of the first fixing grooves 12 is three, so that there are three relative positions between the first fixing seat 13 and the first base 11.
The inclination angle of the first fixing base 13 relative to the first base 11 is different for each relative position, so that the interlayer bonding strength of the test sample can be tested under different oblique shearing forces.
The first fixing seat 13 is provided with a placing groove 14, and the placing groove 14 is used for placing a sample used in detection. When the first fixing base 13 is inserted into the first base 11 through the first fixing groove 12, the placing groove 14 is inclined, and when the first fixing base 13 is inserted into the first base 11 through a different first fixing groove 12, the inclined angle of the placing groove 14 is different.
Referring to fig. 4, a plurality of second fixing grooves 22 are also formed on the second base 21, the second fixing grooves 22 are also formed on the same surface of the second base 21, adjacent second fixing grooves 22 are parallel to each other, and a gap is formed between the two second fixing grooves 22.
The first pressing plate 23 is inserted into the second base 21 through the second fixing groove 22 and is not parallel to the second base 21, that is, an included angle exists between the first pressing plate 23 and the second base 21.
The number of the second fixing grooves 22 is also plural, and when the first pressing plate 23 is inserted into the second base 21 through different second fixing grooves 22, the included angle between the first pressing plate and the second base 21 is also different.
The second presser plate 24 is fixed to the first presser plate 23, and functions to apply pressure to the sample in the placement tank 14, and determine the interlayer bonding strength of the sample from the magnitude of the pressure value and the degree of damage of the sample.
Taking a specific usage scenario as an example, a part of the sample for detection is located inside the placement groove 14, the remaining part is located outside the placement groove 14, the second pressing plate 24 presses on the part of the sample located outside the placement groove 14, and a pressure is applied to the part of the sample, and the sample starts to deform or break with the gradual increase of the pressure.
The test results are of two types, the first type is that the applied pressure is gradually increased until the sample is deformed or broken; the second is that the applied pressure is a constant value and the pressure is maintained for a period of time to observe whether the sample is deformed or broken.
In the test process, the first base 11 and the second base 21 are respectively in contact with a laboratory table and a pressure arm of the press, the pressure arm is in hydraulic drive or lead screw drive, the pressure arm can apply pressure to the first base 11 or the second base 21 which is in contact with the pressure arm in the moving process, the first base 11 and the second base 21 are forced to move towards the direction of mutual approaching, in the process, the first base 11 can also slide relative to the second base 21, and the sliding direction is consistent with the inclination angle of the placing groove 14.
Since the sample in the placement groove 14 is placed in an inclined manner, when the first base 11 slides relative to the second base 21, pressure is applied to the sample during the sliding, and the pressure acts on the interlayer of the sample, so that the interlayer of the sample can be broken, and the interlayer bonding strength of the sample can be obtained by observing whether or not the interlayer of the sample is broken or the degree of the breakage.
In summary, the interlayer bonding strength testing system based on oblique shear force shown in the embodiment of the present application can decompose the pressure generated by the press, for example, the pressure generated by the press is vertically downward, and can decompose the pressure into a first component parallel to the plane in which the layers of the test sample are located in the placing groove 14 and a second component perpendicular to the first component, where the first component can be regarded as a destructive force acting on the layers of the test sample, and can test the interlayer bonding strength of the test sample.
In addition, when the first fixing groove 12 and the second fixing groove 22 are replaced with different ones, the inclination angle of the placing groove 14 can be adjusted, and similarly, the inclination angle of the sample in the placing groove 14 is changed, so that the interlayer bonding strength of the sample under different oblique shearing forces can be tested.
As a specific embodiment of the oblique shear force based interlayer adhesion strength test system, please refer to fig. 3, a dovetail-shaped or T-shaped fixing groove is used as the first fixing groove 12, and the two fixing grooves are described below, wherein the dovetail-shaped fixing groove is dovetail-shaped and similar to an isosceles trapezoid, and can bear a certain overturning moment, and the T-shaped fixing groove is similar to a letter T and also can bear a certain overturning moment.
The capability of withstanding the overturning moment means that the first fixing seat 13 and the first pressing plate 23 do not shake when being pressed.
As a specific embodiment of the oblique shear force based interlayer adhesion strength test system, please refer to fig. 4, a dovetail-shaped or T-shaped fixing groove is used as the second fixing groove 22, which will be described below, and the dovetail-shaped fixing groove is dovetail-shaped and similar to an isosceles trapezoid, and can bear a certain overturning moment, and the T-shaped fixing groove is similar to a letter T and also can bear a certain overturning moment.
The capability of withstanding the overturning moment means that the first fixing seat 13 and the first pressing plate 23 do not shake when being pressed.
As one embodiment of the oblique shear force-based interlayer bonding strength test system provided by the application, referring to fig. 2, and 5, the cross-sectional shape of the placing groove 14 is a circle, and the working surface of the second pressing plate 24 is an arc surface, so that a cylindrical test sample can be tested.
Further, the radius of curvature of the working surface of the second presser plate 24 is equal to the radius of the placement groove 14, which makes the contact area between the second presser plate 24 and the sample larger, and helps the test result to be more realistic, and it should be understood that if the contact area between the second presser plate 24 and the sample is smaller, the local pressure may be too large, and the test result may be inaccurate.
When the radius of curvature of the working surface of the second presser plate 24 is adjusted to be equal to the radius of the placement groove 14, the contact area of the second presser plate 24 with the test specimen is relatively large, and in addition, the working surface of the second presser plate 24 can be regarded as being composed of numerous curves, the radii of curvature of the curves are the same, and then the corresponding central angle of the curve should be less than or equal to 180 degrees, so that the contact and separation of the second presser plate 24 with the test specimen is facilitated.
In an embodiment of the oblique shear force based interlayer adhesive strength test system, the cross-sectional shape of the placing groove 14 may be rectangular, and in this case, the working surface of the second pressing plate 24 is a plane, so that a cubic test sample can be tested.
Of course, in order to reduce the possibility of slippage, please refer to fig. 7, guide plates 25 can be added to the second pressing plate 24, the number of the guide plates 25 is two, and the guide plates 25 are symmetrically fixed on the second pressing plate 24, during the test, the guide plates 25 are located at both sides of the sample, if slippage occurs, the sample will contact with one of the guide plates 25, and the guide plates 25 will apply a pressure to the sample opposite to the moving direction of the sample, so that the second pressing plate 24 and the sample are kept in a contact state.
As a specific embodiment of the oblique shear-based interlayer bonding strength testing system provided by the application, please refer to fig. 5 and 6, an observation hole 15 is further added on the first fixing seat 13, and the observation hole 15 is communicated with the placing groove 14 and is used for facilitating observation of the state of the sample in the placing groove 14.
It should be understood that, during the test, the sample in the placing groove 14 is in an inclined state, the placing groove 14 and the second pressing plate 24 will shield the shear force part of the sample, which is not easy for the tester to observe, and if one observation hole 15 is opened at the place, the state of the sample can be seen in real time.
The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. An interlaminar bonding strength test system based on oblique shear force, characterized by comprising:
a first base (11);
a plurality of first fixing grooves (12) which are arranged on the first base (11) at intervals, wherein the adjacent first fixing grooves (12) are parallel to each other;
the first fixing seat (13) is inserted into the first base (11) through the first fixing groove (12);
the placing groove (14) is arranged on the first fixing seat (13) and is used for placing a sample;
the second base (21) is provided with a plurality of second fixing grooves (22), the plurality of second fixing grooves (22) are arranged on the second base (21) at intervals, and the adjacent second fixing grooves (22) are mutually parallel;
the first pressing plate (23) is inserted into the second base (21) through the second fixing groove (22); and
a second presser plate (24) which is provided on the first presser plate (23) and is not parallel to the second base (21) and applies pressure to the sample in the placement groove (14);
when the first fixed seat (13) is connected with different first fixed grooves (12), the included angles between the placing groove (14) and the first base (11) are different; when the first pressing plate (23) is connected with different second fixing grooves (22), the included angles between the second pressing plate (24) and the second base (21) are different.
2. An oblique shear-based interlayer bonding strength test system according to claim 1, wherein the first fixing groove (12) is dovetail-shaped or T-shaped.
3. The oblique shear-based interlayer adhesive strength test system according to claim 1 or 2, wherein the second fixing groove (22) is dovetail-shaped or T-shaped.
4. The interlaminar bonding strength test system based on oblique shearing force according to claim 1, characterized in that the cross-sectional shape of the placing groove (14) is circular, and the working surface of the second pressing plate (24) is an arc surface.
5. The interlaminar bond strength testing system based on oblique shear force of claim 4, characterized in that the radius of curvature of the working surface of the second pressure plate (24) is equal to the radius of the placement groove (14).
6. The interlaminar bonding strength test system based on oblique shearing force according to claim 1, characterized in that the cross-sectional shape of the placing groove (14) is rectangular, and the working surface of the second pressing plate (24) is a plane.
7. The interlaminar bonding strength testing system based on oblique shearing force according to claim 1 or 6, characterized in that the second pressing plate (24) is symmetrically provided with guide plates (25);
the second pressure plate (24) is abutted on the first fixed seat (13) and slides relative to the first fixed seat (13).
8. The interlaminar bonding strength test system based on oblique shear force of claim 1, characterized in that, the first fixing seat (13) is provided with an observation hole (15), and the observation hole (15) is communicated with the placing groove (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110334501.3A CN113176202A (en) | 2021-03-29 | 2021-03-29 | Interlayer bonding strength test system based on oblique shear force |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110334501.3A CN113176202A (en) | 2021-03-29 | 2021-03-29 | Interlayer bonding strength test system based on oblique shear force |
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| CN113176202A true CN113176202A (en) | 2021-07-27 |
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| CN211576827U (en) * | 2020-02-09 | 2020-09-25 | 程彦 | In-situ detection device for shear strength between asphalt road layers by cylinder beveling method |
| CN112014199A (en) * | 2020-08-26 | 2020-12-01 | 东北大学 | Rock variable-angle shearing device and test method thereof |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080216584A1 (en) * | 2007-03-09 | 2008-09-11 | Younane Abousleiman | Test cell for applying a shear stress to a test specimen |
| CN204286951U (en) * | 2014-07-13 | 2015-04-22 | 西北农林科技大学 | A kind of concrete shear test instrument |
| CN204013689U (en) * | 2014-07-30 | 2014-12-10 | 深圳市金兴达电子有限公司 | Multifunctional hand frame |
| CN204679402U (en) * | 2015-05-28 | 2015-09-30 | 长沙理工大学 | A kind of Interlaminar shear strengths test unit becoming to shear arbitrarily angle with surface level |
| CN206124917U (en) * | 2015-12-28 | 2017-04-26 | 陈新生 | Panel computer support device and on -vehicle panel computer mounting system |
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Application publication date: 20210727 |
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