CN111103205A - Shear test device and method for testing adhesive property of adhesive/steel interface - Google Patents
Shear test device and method for testing adhesive property of adhesive/steel interface Download PDFInfo
- Publication number
- CN111103205A CN111103205A CN202010006054.4A CN202010006054A CN111103205A CN 111103205 A CN111103205 A CN 111103205A CN 202010006054 A CN202010006054 A CN 202010006054A CN 111103205 A CN111103205 A CN 111103205A
- Authority
- CN
- China
- Prior art keywords
- adhesive
- test piece
- hydraulic jack
- shear
- pressure sensor
- 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.)
- Pending
Links
Images
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
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
-
- 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
- G01N2203/003—Generation of the force
- G01N2203/0032—Generation of the force using mechanical 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
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
Landscapes
- 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 invention discloses a shear test device and a shear test method for testing the adhesive property of an adhesive/steel interface, which comprise the following steps: the method comprises the following steps: the device comprises an outer barrel, a base, a hydraulic jack, a pressure sensor, a sliding block and a baffle plate; the hydraulic jack, the pressure sensor and the sliding block are all positioned in the outer cylinder; the inner wall of the outer barrel is provided with a track; the top of the outer barrel is provided with a test piece inlet, and the test piece inlet is provided with a baffle plate and used for applying shearing force to a test piece; the bottom of the outer cylinder is fixedly provided with a base, and the base is provided with a hydraulic jack; the sliding block is arranged on the track in a sliding manner; the sliding block is provided with a platform for placing a test piece; a sliding block threaded hole is machined in the platform and used for fixing a test piece; one end of the pressure sensor is connected with the hydraulic jack, and the other end of the pressure sensor is connected with the sliding block. The invention can solve the problem that the adhesive/steel combined test piece is easy to bend out of the plane in the test process, and can ensure that the test piece is only subjected to the action of shear load, thereby improving the test accuracy.
Description
Technical Field
The invention belongs to the technical field of carbon fiber composite reinforced steel structures, and particularly relates to a shear test device and a shear test method for testing the adhesive property of an adhesive/steel interface.
Background
Fiber Reinforced Plastic (FRP) is a new material, has high strength, light weight, fatigue resistance, corrosion resistance, etc., and has been widely used for reinforcing steel structures. By sticking the FRP outside the surface of the steel, the bearing performance and the durability of the steel can be effectively improved. Researches find that the interface of the steel member reinforced by the FRP externally attached is mainly influenced by shear stress, and the weak area is a binder/steel interface. The stress characteristic of the FRP reinforcing steel member shows that the interface is mainly influenced by the shearing stress. In the research of the shear resistance of the FRP/steel interface, the research of the shear resistance of the adhesive/steel interface has important significance, and how to make a test piece subjected to more ideal shear load is particularly important.
At present, a tensile testing machine or a fatigue testing machine is mainly adopted for testing domestically, the optimal testing section is 10% -100% of the limit range of a sensor, however, the limit load of a bonding agent/steel standard combined test piece designed and manufactured according to the existing specification is about 5-10 KN, and the bonding agent/steel standard combined test piece is not in the optimal testing section of most testing machines; meanwhile, when the adhesive/steel standard combined test piece manufactured according to the standard is loaded on a testing machine, the test piece can deform, and the interface is difficult to ensure to receive ideal pure shear load in the loading process.
In summary, a special apparatus and method for adhesive/steel interface shear testing is needed.
Disclosure of Invention
The invention aims to provide a shear test device and a shear test method for testing the bonding performance of an adhesive/steel interface so as to solve one or more technical problems. The invention can solve the problem that the adhesive/steel combined test piece is easy to bend out of the plane in the test process, can enable the test piece to be only under the action of shear load, and can improve the test accuracy.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention relates to a shear test device for testing the adhesive property of an adhesive/steel interface, which comprises: the device comprises an outer barrel, a base, a hydraulic jack, a pressure sensor, a sliding block and a baffle plate; wherein the hydraulic jack, the pressure sensor and the slide block are all positioned in the outer cylinder; the inner wall of the outer barrel is provided with a track; a test piece inlet is formed in the top of the outer barrel, and a baffle is arranged at the test piece inlet and used for applying shearing force to a test piece; the base is fixedly arranged at the bottom of the outer barrel, and the hydraulic jack is arranged on the base; the sliding block is slidably arranged on the track; the sliding block is provided with a platform for placing a test piece; a sliding block threaded hole is machined in the platform and used for fixing a test piece; one end of the pressure sensor is connected with the hydraulic jack, and the other end of the pressure sensor is connected with the sliding block.
The invention is further improved in that the base is detachably and fixedly arranged at the bottom of the outer cylinder through bolts.
The invention has the further improvement that the hydraulic jack, the pressure sensor and the slide block are all cylindrical, and the axes of the hydraulic jack, the pressure sensor and the slide block are in the same vertical straight line.
The invention is further improved in that the sliding block is provided with a convex groove, and the sliding block is slidably arranged on the track through the convex groove.
The invention further improves the method and also comprises the following steps: a test piece, the test piece comprising: a bottom steel plate, a shear steel plate and a binder layer; the shear steel plate is bonded on the bottom steel plate through the adhesive layer; and the bottom steel plate is provided with a test piece threaded hole which is used for being matched with the slider threaded hole to fix the bottom steel plate on the platform.
A further development of the invention is that the width of the shear steel plate is the same as the width of the bottom steel plate.
The invention is further improved in that the shearing steel plate and the test piece threaded hole are respectively close to two ends of the bottom steel plate.
The invention is further improved in that the hydraulic jack is a hydraulic jack with the maximum loading force being greater than or equal to 20 kN.
The invention relates to a shear test method for testing the adhesive property of an adhesive/steel interface, which is based on the shear test device provided by the invention and comprises the following steps:
the test piece is placed into the outer barrel from the test piece placing inlet; wherein the shear steel plate is between the baffle plate and the hydraulic jack; the bottom steel plate is fixed on the platform through bolts;
the hydraulic jack is pressurized, so that the sliding block slides upwards in a single direction along the track; the pressure sensor acquires a load value in a loading test process; the axes of the hydraulic jack, the pressure sensor and the slide block are always positioned on the same vertical line; the slider can only slide in a direction of movement defined by the track.
Compared with the prior art, the invention has the following beneficial effects:
in the device, two ends of a pressure sensor are respectively used for connecting a sliding block and a hydraulic jack; providing a test load through a hydraulic jack, and measuring a load value in a loading process by a pressure sensor; the sliding block is constrained by the rail and can only slide along the movement direction limited by the rail under the pushing of the hydraulic jack, and a platform is processed on the sliding block and used for fixedly placing a test piece, so that the test piece can be effectively prevented from being bent outwards in the plane; the slider combines with the track, can make the test piece be in under the shear load all the time. The device has simple structure and reliable performance, when the adhesive/steel combined test piece is fixed on the slide block, the slide block is positioned in the outer cylinder together through the rail and the pressure sensor, the slide block drives the bottom steel plate to slide upwards along the rail of the outer cylinder during loading, and the baffle is contacted with the shearing steel plate of the test piece, so that the test piece is always under the shearing load, the loading effect and accuracy can be ensured, and the efficiency can be improved.
The test method can effectively prevent the test piece from bending outwards in the plane in the adhesive/steel interface shear test, ensures that the test piece is always under the shear load, and can improve the accuracy and efficiency of the test.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art are briefly introduced below; it is obvious that the drawings in the following description are some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic structural diagram of a shear test apparatus for testing adhesive properties of an adhesive/steel interface according to an embodiment of the present invention;
FIG. 2 is an exploded view of a shear test apparatus for testing the adhesive properties of an adhesive/steel interface according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a slider according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a combined adhesive/steel interface test piece according to an embodiment of the invention;
in fig. 1 to 4, 1, an outer cylinder; 2. a base; 3. a bolt; 4. a hydraulic jack; 5. a pressure sensor; 6. a slider; 7. a test piece; 8. a baffle plate; 9. a track; 10. a platform; 11. a threaded hole of the sliding block; 12. a convex groove; 13. a bottom steel plate; 14. shearing a steel plate; 15. an adhesive layer; 16. and (4) testing a threaded hole of the test piece.
Detailed Description
In order to make the purpose, technical effect and technical solution of the embodiments of the present invention clearer, the following clearly and completely describes the technical solution of the embodiments of the present invention with reference to the drawings in the embodiments of the present invention; it is to be understood that the described embodiments are only some of the embodiments of the present invention. Other embodiments, which can be derived by one of ordinary skill in the art from the disclosed embodiments without inventive faculty, are intended to be within the scope of the invention.
Referring to fig. 1, 2 and 3, a shear test apparatus for testing the adhesive performance of an adhesive/steel interface according to an embodiment of the present invention includes: the device comprises an outer barrel 1, a base 2, a bolt 3, a hydraulic jack 4, a pressure sensor 5, a sliding block 6, a test piece 7, a baffle 8, a track 9, a platform 10 and a sliding block threaded hole 11.
Referring to fig. 4, a test piece 7 is a binder/steel combined test piece, and is formed by overlapping a bottom steel plate 13, a binder layer 15 and a shear steel plate 14; wherein the width of the bottom steel plate 13 is equal to the width of the shear steel plate 14, and the length of the bottom steel plate 13 is greater than that of the shear steel plate 14. The bottom steel plate 13 is provided with a test piece threaded hole 16 for fixing the test piece 7 on the slide block 6.
In the embodiment of the invention, a hydraulic jack 4, a pressure sensor 5 and a slide block 6 are all positioned in an outer cylinder 1, and the bottom of the outer cylinder 1 is connected with a base 2 through a bolt 3; one end of the pressure sensor 5 is connected with the sliding block 6, and the other end of the pressure sensor 5 is connected with the hydraulic jack 4; the test piece 7 is fixedly mounted on the slide block 6 through the bolt 3.
Furthermore, one end of the sliding block is fixedly connected with the pressure sensor, and convex grooves are formed in the two sides of the sliding block and slide in the outer cylinder rail.
Further, the maximum loading force of the hydraulic jack is greater than or equal to 20 kN.
The loading process of the test device of the invention is as follows: the hydraulic jack pushes the pressure sensor, the pressure sensor pushes the sliding block to slide along the track, the sliding block pulls the bottom steel plate, the baffle is in contact with the shearing steel plate, and shearing load is applied to the adhesive/steel combined test piece. And the load value in the loading process is acquired by the pressure sensor.
The loading test device special for testing the interface shear resistance of the adhesive/steel combined test piece can prevent the test piece from bending out of plane, so that the test piece is always under a shear load; the device has simple structure and reliable performance, and can ensure the loading effect and improve the efficiency.
The testing method of the adhesive/steel interface shear testing device provided by the embodiment of the invention specifically comprises the following steps:
(1) a pressure sensor 5 and a hydraulic jack 4 are arranged in the outer cylinder 1 from the lower part, and the outer cylinder 1 is fixed on the base 2 by a bolt 3; the slide 6 is placed in the outer cylinder 1 from above via the rail 9.
(2) And (3) penetrating the adhesive/steel combined test piece 7 from the lower part of the baffle plate 8, placing the adhesive/steel combined test piece on a platform 10 of a sliding block 6, and fixing the test piece 7 on the sliding block 6 by using bolts 3.
(3) The hydraulic jack 4 pushes the pressure sensor 5, the pressure sensor 5 pushes the sliding block 6 to slide along the track 9, the sliding block 6 pulls the bottom steel plate 13, the baffle 8 clamps the shearing steel plate 14, and shearing load is applied to the adhesive/steel combined test piece.
Wherein, the load value in the loading process is obtained by the pressure sensor.
In conclusion, the invention provides the adhesive/steel interface pure shear test device and method capable of effectively preventing out-of-plane bending. The invention discloses a shear test device which mainly comprises an outer barrel, a base, a bolt, a hydraulic jack, a pressure sensor, a sliding block, a binder/steel combined test piece, a baffle, a track, a platform and a threaded hole, wherein the outer barrel is provided with a plurality of holes; the hydraulic jack, the pressure sensor and the sliding block are all arranged in the outer barrel and are always located on the same vertical line, and the sliding block is constrained by the outer barrel rail and only slides along the height direction of the rail under the action of the hydraulic jack. The device has the advantages of reliable structure and simple operation, can effectively prevent the out-of-plane bending of the test piece, enables the test piece to be always subjected to shear load, ensures the loading effect and improves the efficiency.
The loading axis of the test device is determined by the outer cylinder, the base, the hydraulic jack, the pressure sensor, the slide block and the track, and the method specifically comprises the following steps: firstly, a pressure sensor and a hydraulic jack are arranged in an outer cylinder from the lower part, the bottom of the outer cylinder is connected with a base through a bolt, and a sliding block is arranged in the outer cylinder from the upper part through a track; and then, the binder/steel combined test piece passes through a baffle plate and is fixed on the sliding block platform through bolts, and the baffle plate is in contact with the shearing steel plate, so that the test piece is always subjected to shearing load.
Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can make modifications and equivalents to the embodiments of the present invention without departing from the spirit and scope of the present invention, which is set forth in the claims of the present application.
Claims (9)
1. A shear test device for testing the adhesive properties of an adhesive/steel interface, comprising: the device comprises an outer cylinder (1), a base (2), a hydraulic jack (4), a pressure sensor (5), a sliding block (6) and a baffle (8); wherein the hydraulic jack (4), the pressure sensor (5) and the slide block (6) are all positioned in the outer cylinder (1);
the inner wall of the outer cylinder (1) is provided with a track (9); a test piece inlet is formed in the top of the outer barrel (1), and a baffle (8) is arranged at the test piece inlet and used for applying shearing force to a test piece to be tested;
the base (2) is fixedly arranged at the bottom of the outer barrel (1), and the hydraulic jack (4) is arranged on the base (2);
the sliding block (6) is arranged on the track (9) in a sliding manner; the sliding block (6) is provided with a platform (10) for placing a piece to be tested; a sliding block threaded hole (11) is machined in the platform (10) and used for fixing a piece to be tested;
one end of the pressure sensor (5) is connected with the hydraulic jack (4), and the other end of the pressure sensor is connected with the sliding block (6).
2. The shear test device for testing the adhesive property of an adhesive/steel interface according to claim 1, wherein the base (2) is detachably and fixedly installed at the bottom of the outer cylinder (1) through a bolt (3).
3. The shear test device for testing the bonding performance of the adhesive/steel interface according to claim 1, wherein the hydraulic jack (4), the pressure sensor (5) and the slide block (6) are all cylindrical, and the axes of the hydraulic jack, the pressure sensor and the slide block are in the same vertical straight line;
the movement direction defined by the track (9) is parallel to the vertical straight line.
4. The shear test device for testing the adhesive property of an adhesive/steel interface according to claim 1, wherein the slide block (6) is provided with a convex groove (12), and the slide block (6) is slidably arranged on the track (9) through the convex groove (12).
5. The shear test device for testing the adhesive properties of an adhesive/steel interface according to claim 1, further comprising:
a test piece (7), the test piece (7) comprising: a bottom steel plate (13), a shear steel plate (14) and an adhesive layer (15);
the shear steel plate (14) is bonded to the bottom steel plate (13) through the adhesive layer (15);
and a test piece threaded hole (16) is formed in the bottom steel plate (13) and is used for being matched with the slider threaded hole (11) to fix the bottom steel plate (13) on the platform (10).
6. A shear test device for testing the adhesive/steel interfacial adhesion according to claim 5, wherein the width of the shear steel plate (14) is the same as the width of the bottom steel plate (13).
7. A shear test device for testing the adhesive/steel interface bonding performance according to claim 5, characterized in that the shear steel plate (14) and the test piece threaded hole (16) are respectively close to both ends of the bottom steel plate (13).
8. The shear test device for testing the adhesive properties of an adhesive/steel interface as claimed in claim 1, wherein the hydraulic jack (4) is a hydraulic jack with a maximum loading force greater than or equal to 20 kN.
9. A shear test method for testing the adhesive property of an adhesive/steel interface is characterized in that the shear test device based on claim 5 comprises the following steps:
the test piece (7) is placed into the outer cylinder (1) from the test piece placing inlet; wherein the shear steel plate (14) is between the blind (8) and the hydraulic jack (4);
the bottom steel plate (13) is fixed on the platform (10) through a bolt (3) and the sliding block threaded hole (11);
the hydraulic jack (4) is pressurized to enable the sliding block (6) to slide upwards in a single direction along the track (9);
the pressure sensor (5) acquires a load value in the loading test process;
the axes of the hydraulic jack (4), the pressure sensor (5) and the slide block (6) are always positioned on the same vertical line; the slider (6) can only slide in a direction of movement defined by the track (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010006054.4A CN111103205A (en) | 2020-01-03 | 2020-01-03 | Shear test device and method for testing adhesive property of adhesive/steel interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010006054.4A CN111103205A (en) | 2020-01-03 | 2020-01-03 | Shear test device and method for testing adhesive property of adhesive/steel interface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111103205A true CN111103205A (en) | 2020-05-05 |
Family
ID=70426693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010006054.4A Pending CN111103205A (en) | 2020-01-03 | 2020-01-03 | Shear test device and method for testing adhesive property of adhesive/steel interface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111103205A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111751274A (en) * | 2020-07-15 | 2020-10-09 | 华侨大学 | Device for single shear test of component interface bonding performance |
| CN113358495A (en) * | 2021-06-07 | 2021-09-07 | 西安建筑科技大学 | Bamboo wood material presses-cuts test device |
-
2020
- 2020-01-03 CN CN202010006054.4A patent/CN111103205A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111751274A (en) * | 2020-07-15 | 2020-10-09 | 华侨大学 | Device for single shear test of component interface bonding performance |
| CN113358495A (en) * | 2021-06-07 | 2021-09-07 | 西安建筑科技大学 | Bamboo wood material presses-cuts test device |
| CN113358495B (en) * | 2021-06-07 | 2023-06-30 | 西安建筑科技大学 | Bamboo material presses-cuts test device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111103205A (en) | Shear test device and method for testing adhesive property of adhesive/steel interface | |
| CN108760495B (en) | Bidirectional tension bonding test device and test method for weak-rigidity rib | |
| CN106018270A (en) | Pull-out test device for bond-slip hysteretic behavior testing of stiffening rib | |
| CN102493450A (en) | Glass fiber reinforced plastic engineering anchor rod and manufacturing method thereof | |
| CN117571063B (en) | Reinforcing steel bar performance detection device and detection method thereof | |
| CN211401989U (en) | Shear test device for testing adhesive property of adhesive/steel interface | |
| CN208505786U (en) | A kind of continuous pipe bearing capacity experimental machine | |
| CN108507866B (en) | Test piece measurement structure for weak-rigidity reinforcement bidirectional tension bonding test and assembly method | |
| CN213875389U (en) | Test device for carbon fiber cloth interface bonding, shearing and peeling | |
| CN110646301A (en) | Shear test device and method for testing CFRP/steel interface bonding performance | |
| CN212903682U (en) | Laboratory detects frictional resistance's of prestressed anchorage mouth and horn mouth device | |
| CN213903107U (en) | Test system for testing loading deformation of pipeline | |
| CN205619862U (en) | Novel test of ocean engineering compliance pipe cable minimum bending radius device | |
| CN112611635B (en) | Concrete uniaxial tension test fixture and test method | |
| CN101281119B (en) | Sustained load loader for FRP cloth reinforcement experiment as well as method thereof | |
| CN209858345U (en) | FRP muscle and concrete bond test device that slides | |
| CN110470501B (en) | Mechanical multipoint synchronous loading device | |
| CN210953671U (en) | Shear test device for testing CFRP/steel interface bonding performance | |
| CN113567265A (en) | Concrete bending moment testing device and testing method thereof | |
| CN111157357B (en) | Bending quality inspection device for building material plates | |
| CN201637656U (en) | Girder type tester of bonding strength between fiber-reinforced compound sheet and concrete | |
| CN205562286U (en) | Hoist girder test device | |
| CN109781502A (en) | A kind of wear-resisting tooling of pedal pad | |
| CN209570436U (en) | A kind of carbon fiber reinforced concrete strength test loading device | |
| CN220671166U (en) | Moment of flexure test fixture |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |