CN106769849A - The experimental rig of coated substrate interface tension strength test under a kind of shear stress - Google Patents
The experimental rig of coated substrate interface tension strength test under a kind of shear stress Download PDFInfo
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- CN106769849A CN106769849A CN201710014334.8A CN201710014334A CN106769849A CN 106769849 A CN106769849 A CN 106769849A CN 201710014334 A CN201710014334 A CN 201710014334A CN 106769849 A CN106769849 A CN 106769849A
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- substrate interface
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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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Abstract
The invention discloses a kind of experimental rig of coated substrate interface tension strength test under shear stress, including stepper motor, vertical rotary shaft, feathering axis, sample, angular measurement plate, bond pad, chain, counterweight block, adjustable rotary rotating cylinder and support frame；Described sample includes the coating on matrix and its end face；Described stepper motor connection has described vertical rotary shaft；The feathering axis are horizontally arranged in described vertical rotary shaft, and the back fixation of described feathering axis has described angular measurement plate, and end is fixed with described sample；Described bond pad one end bond pad other end Nian Jie and described with described sample coatings end is coupled by described chain with described counterweight block；Described adjustable rotary rotating cylinder couples with described feathering axis and inside is provided with described counterweight block.When stepper motor drives vertical rotary shaft to rotate, the device can change the size for being applied to coating and basal body interface junction shearing force by controlling the anglec of rotation of adjustable rotary rotating cylinder, and then test the situation of change of coated substrate interface tension strength under the different shear stress of measurement.
Description
Technical field
The present invention relates to coating interface adhesion measurement field, coating-substrate circle under a kind of shear stress is specifically related to
The experimental rig of face tensile strength test.
Background technology
The application field of coating is very extensive now, and in engineering in practice, the good combination between coating and matrix is straight
Connect the service life that decide material.Therefore how research characterizes measurement coating and becomes especially to weigh with basal body interface bond strength
Will.The measurement of interface tension strength and interface shear strength is the two methods of most common sign interface bond strength.Interface
Tensile strength and interface shear strength respectively be characterize coating-substrate material in combination interface crack initiation snap on interface
Maximum (normal) stress and maximum shear stress, reflect the ability of coating-substrate combination interface resistance stretching and failure by shear respectively.
But in reality, the destruction situation of coating-substrate interface junction is often extremely complex, coating is from matrix surface
Depart from may both tension stress influence, while can also be influenceed by shear stress.When coating-substrate interface junction both
When tension stress receives shearing force again, how boundary strength changes also needs further to go further investigation.
And the present invention is intended to provide a kind of measurement efficiency is high, easy to operate, high degree of automation consideration shear stress is to applying
The experimental rig of layer-basal body interface tensile strength influence, matrix-coating when receiving shearing force to consider not only tension stress
Experiment basis have been established in interface bond strength quantitative study.
The content of the invention
The present invention is intended to provide a kind of measurement efficiency is high, easy to operate, high degree of automation consideration shear stress to coating-
The experimental rig of basal body interface tensile strength influence.To consider that it is strong that the different lower coating-substrate interfaces of shear stress effect combine stretching
Experiment basis have been established in the quantitative study for spending situation of change.
The experimental rig of coating-substrate interface tensile strength test under a kind of shear stress, including stepper motor, upper fixation
Plate, middle fixed plate, bottom plate, bearing block, vertical rotary shaft, feathering axis, sample, angular measurement plate, bond pad, lock
Chain, counterweight block, adjustable rotary rotating cylinder and support frame；Described sample includes the coating on matrix and its end face；Described stepping electricity
Machine connection has described vertical rotary shaft；The feathering axis are horizontally arranged in described vertical rotary shaft, and described
The back fixation of feathering axis has described angular measurement plate, and end is fixed with described sample；Described bond pad one end
The bond pad other end Nian Jie and described with described sample coatings end is coupled by described chain with described counterweight block；
Described adjustable rotary rotating cylinder couples with described feathering axis and inside is provided with described counterweight block.Erected when stepper motor drives
When direct rotary rotating shaft rotates, the device can be changed by controlling the anglec of rotation of adjustable rotary rotating cylinder and be applied to coating and basal body interface
The size of junction shearing force, and then test the situation of change of coating-substrate interface tensile strength under the different shear stress of measurement.
Described stepper motor is fixed on described bottom plate, and described bottom plate is solid with described support frame
Fixed, the output shaft of described stepper motor is coupled by shaft coupling with described vertical rotary shaft.
Described upper mounted plate and described middle fixed plate, between which position are also respectively fixed with described support frame
On be separately installed with described bearing block, bearing block is coupled by internal bearing with described vertical rotary shaft, it is ensured that institute
The vertical rotary shaft stated it is stable and reliable in work.
Described feathering axis are fixedly connected in described vertical rotary shaft by the nut of key connecting and upper end, and one
A rectangular-shape hole is provided with inside end face, and upper end is provided with a certain size through hole, through-hole diameter is less than rectangular-shape hole section
The length of side, specifically, rectangular-shape hole depth 30-60mm, the through-hole diameter of the section length of side equal to 1.5 ~ 3 times in rectangular-shape hole.
Described matrix of samples one end is rectangular-shape, one is provided with above end logical with described feathering axis upper end
The through hole of the same size in hole, described matrix of samples rectangular-shape end can just be embedded in rectangular inside horizontal rotation axial end
In body shape hole, and two through holes are with one heart, then can be connected by bolts and for described sample be fixed on described feathering axis
On.
Described sample coatings end is Nian Jie with strong adherence agent with described bond pad, and the adhesive strength of strength adhesive is big
In the bond strength of coating-substrate interface.
Described adjustable rotary rotating cylinder can rotate around described feathering axis, and its back fixation has instruction block, indicate block
On have the arrow of the measurement adjustable rotary rotating cylinder anglec of rotation, indicate the block back side to be fixed with cylinder sliding block, cylinder sliding block can be in institute
Slided in the circular groove on angular measurement plate stated, and can be by the described corresponding fixing screws of angular surveying back
It is fixed.
Described bond pad, coating and chain weight are negligible.
The beneficial effects of the invention are as follows：Measurement efficiency of the present invention is high, easy to operate, high degree of automation；There is provided one kind
Consider the experimental rig that shear stress influences on coating-substrate interface combination tensile strength, applied to consider that different shear stress effects are lower
Experiment basis have been established in the quantitative study of layer-basal body interface combination tensile strength situation of change.
Brief description of the drawings
The present invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of apparatus of the present invention.
Fig. 2 is the decomposed schematic diagram of apparatus of the present invention.
Fig. 3 is the counterweight block of apparatus of the present invention and the sectional view of coating-substrate interface.
Fig. 4 is the coating-substrate partial enlarged drawing of apparatus of the present invention.
Fig. 5 is the counterweight block and coating-substrate interface force analysis figure of apparatus of the present invention.
In figure, 1- stepper motors, 2- vertical rotary shafts, 3- feathering axis, 4- support frames, 5- upper mounted plates, 6- bearings
Seat, 7- angular measurement plates, 8- adjustable rotary rotating cylinders, fixed plate in 9-, 10- bottom plates, 11- bolts, 12- matrixes, 13- coatings,
14- strong adherence agent, 15- bond pads, 16- chains, 17- counterweight blocks, 18- fixing screws, 19- cylinder sliding blocks, 20- indicates block.
Specific embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings.
As shown in Figures 1 to 5, the experiment of coating-substrate interface tensile strength test is filled under a kind of shear stress of the invention
Put, including stepper motor 1, upper mounted plate 5, middle fixed plate 9, bottom plate 10, bearing block 6, vertical rotary shaft 2, horizontal rotation
Axle 3, sample, angular measurement plate 7, bond pad 15, chain 16, counterweight block 17, adjustable rotary rotating cylinder 8 and support frame 4；Described sample
Including the coating 13 on matrix 12 and its end face；Described stepper motor 1 couples described vertical rotary shaft 2；The level
Rotary shaft 3 is horizontally arranged in described vertical rotary shaft 2, and the back fixation of described feathering axis 3 has described angle
Degree measurement plate 7, end is fixed with described sample；Described one end of bond pad 15 is Nian Jie with the described end of sample coatings 13, and
The described other end of bond pad 15 is coupled by described chain 16 with described counterweight block 17；Described adjustable rotary rotating cylinder 8 with
Described feathering axis 3 couple and inside is provided with described counterweight block 17.When stepper motor 1 drives vertical rotary shaft 2 to rotate
When, the device can be changed by controlling the anglec of rotation of adjustable rotary rotating cylinder 8 and be applied to coating and basal body interface junction and shear
The size of power, and then test the situation of change of coating-substrate interface tensile strength under the different shear stress of measurement.
Described stepper motor 1 is fixed on described bottom plate 10, described bottom plate 10 and described support
Frame 4 is fixed, and the output shaft of described stepper motor 1 is coupled by shaft coupling with described vertical rotary shaft 2.
Described upper mounted plate 5 and described middle fixed plate 9, between which are also respectively fixed with described support frame 4
Described bearing block 6 is separately installed with position, bearing block 6 is coupled by internal bearing with described vertical rotary shaft 2, really
The stable and reliable in work of described vertical rotary shaft 2 is protected.
Described feathering axis 3 are fixedly connected in described vertical rotary shaft 2 by the nut of key connecting and upper end,
A rectangular-shape hole is provided with inside end face, and upper end is provided with a certain size through hole, through-hole diameter cuts less than rectangular-shape hole
The face length of side, specifically, rectangular-shape hole depth 30-60mm, the through-hole diameter of the section length of side equal to 1.5 ~ 3 times in rectangular-shape hole.
The described one end of matrix of samples 12 is rectangular-shape, and one is provided with above end with described feathering axis upper end
The through hole of the same size of through hole, the described rectangular-shape end of matrix of samples 12 can be just embedded in inside the end face of feathering axis 3
Rectangular-shape hole in, and two through holes are with one heart, then can be coupled by bolt 11 and for described sample be fixed on described water
In flat rotary shaft 3.
The described end of sample coatings 13 is be bonded with strong adherence agent 14 with described bond pad 15, strength adhesive 14 it is viscous
Connect bond strength of the intensity more than coating-substrate interface.
Described adjustable rotary rotating cylinder 8 can rotate around described feathering axis 3, and its back fixation has instruction block 20, refers to
Show there is the arrow of the anglec of rotation of measurement adjustable rotary rotating cylinder 8 on block 20, indicate the back side of block 20 to be fixed with cylinder sliding block 19, cylinder
Sliding block 19 can be slided in the circular groove on described angular measurement plate 7, and can be by the described back side of angular measurement plate 7
Corresponding fixing screws 18 are fixed.
Described bond pad 15, coating 13 and the weight of chain 16 are negligible.
Specific operation process is as follows：
（1）The rectangular-shape end one end of ready matrix of samples 12 is embedded in the cuboid inside the end face of feathering axis 3
In shape hole, then the through hole concentric alignment of both upper ends is connected and fixed by bolt 11, is then applied at the end of sample coatings 13
Strong adherence agent 14 is spread, and the bond pad 15 with certain length chain 16 is bonded on sample coatings 13 in the lump；
（2）It is the counterweight block 17 of m to fixedly mount a upper known quality to the other end of chain 16.Afterwards by adjustable rotary rotating cylinder 8
Installed in one end of feathering axis 3, the instruction block 20 for being fixed on the back side of adjustable rotary rotating cylinder 8 is regulated, make its instruction from above
The angle demarcated in the accurate orientation angle measurement plate 7 of arrow energy, the cylinder sliding block 8 for being also secured to the back side can be in angular measurement plate
Slided in circular groove on 7, counterweight block 17 is put into the through hole of mounted adjustable rotary rotating cylinder 8 in the lump together with chain 16
It is interior.Adjustable rotary rotating cylinder 8 is rotated, makes it straight at a θ angles, then fixed by the fixing screws 18 at the back side of angular measurement plate 7,
Measure the position of centre of gravity of counterweight block 17 now to the horizontal range R of the pivot of vertical rotary shaft 2；
（3）Open stepper motor 1 so that vertical rotary shaft 2 is rotated about the center of rotation with certain rotating speed n, now sample and weight
Code block 17 moves in a circle in the lump；
When θ=0, the level of adjustable rotary rotating cylinder 8 is fixed, and the counterweight block 17 in cylinder makees level under the support of adjustable rotary rotating cylinder 8
Rotation, has：
Wherein：FFromFor the centrifugal force that counterweight block 17 in horizontal direction is subject to
It is approximately considered the pulling force F that horizontal direction is only received in now coating-substrate interface junctionDraw, not by vertical shearing force FCut, and
There is FDraw=FFrom；
Work as θ>When 0, the force analysis of counterweight block 17 is obtained：
Wherein：FChainIt is the pulling force of the chain 16 that counterweight block 17 is subject to
FPressureAnd FBranchIt is the pressure or support force of the inwall of adjustable rotary rotating cylinder 8 that counterweight block 17 is subject to
FFromFor the centrifugal force that counterweight block 17 in horizontal direction is subject to
Mg is the gravity of itself of counterweight block 17
F can be tried to achieve according to above formulaChainSize, further according to the pulling force suffered by coating-substrate interface junction and shearing force formula：
Can try to achieve and act on pulling force and shear force value at coating-interface cohesion；
（4）Gradually increase the rotating speed n of vertical rotary shaft 2, then FFromAlso can gradually increase.It is broken at coating-substrate interface,
When coating 13 is thrown out of together with counterweight block 17, rotating speed n now is recorded；
（5）Then when θ angles are 0, FCut=0, the tensile strength at interface cohesion is：
Wherein：A is coating-substrate interface cross-sectional area
It is the average tensile strength at interface cohesion
When θ contentions are cumulative big, FCutAlso gradually increase, then can be by measuring different size of shearing force FCutLower coating-the base of effect
Pulling force F needed for the critical tension failure in body interface junctionDrawConsider shear stress to coating-substrate interface tensile strength to study
Influence.
Claims (8)
1. under a kind of shear stress coating-substrate interface tensile strength test experimental rig, including stepper motor, upper mounted plate,
Middle fixed plate, bottom plate, bearing block, vertical rotary shaft, feathering axis, sample, angular measurement plate, bond pad, chain, weight
Code block, adjustable rotary rotating cylinder and support frame；Described sample includes the coating on matrix and its end face；Described stepper motor connection
There is described vertical rotary shaft；The feathering axis are horizontally arranged in described vertical rotary shaft, and described level rotation
The back fixation of rotating shaft has described angular measurement plate, and end is fixed with described sample；Described bond pad one end with it is described
Sample coatings end bonding, and the described bond pad other end coupled by described chain with described counterweight block；Described
Adjustable rotary rotating cylinder couples with described feathering axis and inside is provided with described counterweight block；
When stepper motor drives vertical rotary shaft to rotate, the device can be changed by controlling the anglec of rotation of adjustable rotary rotating cylinder
The size of coating and basal body interface junction shearing force is applied to, and then tests coating-substrate interface under the different shear stress of measurement
The situation of change of tensile strength.
2. the experimental rig that coating-substrate interface tensile strength is tested under a kind of shear stress according to claim 1, it is special
Levy and be：Described stepper motor is fixed on described bottom plate, and described bottom plate is fixed with described support frame,
The output shaft of described stepper motor is coupled by shaft coupling with described vertical rotary shaft.
3. the experimental rig that coating-substrate interface tensile strength is tested under a kind of shear stress according to claim 1, it is special
Levy and be：Described upper mounted plate and described middle fixed plate, between which position are also respectively fixed with described support frame
On be separately installed with described bearing block, bearing block is coupled by internal bearing with described vertical rotary shaft, it is ensured that institute
The vertical rotary shaft stated it is stable and reliable in work.
4. the experimental rig that coating-substrate interface tensile strength is tested under a kind of shear stress according to claim 1, it is special
Levy and be：Described feathering axis are fixedly connected in described vertical rotary shaft by the nut of key connecting and upper end, and one
A rectangular-shape hole is provided with inside end face, and upper end is provided with a certain size through hole, through-hole diameter is less than rectangular-shape hole section
The length of side, specifically, rectangular-shape hole depth 30-60mm, the through-hole diameter of the section length of side equal to 1.5 ~ 3 times in rectangular-shape hole.
5. the experimental rig that coating-substrate interface tensile strength is tested under a kind of shear stress according to claim 1, it is special
Levy and be：Described matrix of samples one end is rectangular-shape, one is provided with above end logical with described feathering axis upper end
The through hole of the same size in hole, described matrix of samples rectangular-shape end can just be embedded in rectangular inside horizontal rotation axial end
In body shape hole, and two through holes are with one heart, then can be connected by bolts and for described sample be fixed on described feathering axis
On.
6. the experimental rig that coating-substrate interface tensile strength is tested under a kind of shear stress according to claim 1, it is special
Levy and be：It is characterized in that：Described sample coatings end is Nian Jie with strong adherence agent with described bond pad, strength adhesive
Bond strength of the adhesive strength more than coating-substrate interface.
7. the experimental rig that coating-substrate interface tensile strength is tested under a kind of shear stress according to claim 1, it is special
Levy and be：Described adjustable rotary rotating cylinder can rotate around described feathering axis, and its back fixation has instruction block, indicate on block
There is the arrow of the measurement adjustable rotary rotating cylinder anglec of rotation, indicate the block back side to be fixed with cylinder sliding block, cylinder sliding block can be described
Angular measurement plate on circular groove in slide, and can be solid by the described corresponding fixing screws of angular surveying back
It is fixed.
8. the experimental rig that coating-substrate interface tensile strength is tested under a kind of shear stress according to claim 1, it is special
Levy and be：Described bond pad, coating and weight chain are negligible.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710014334.8A CN106769849B (en) | 2017-01-10 | 2017-01-10 | A kind of experimental rig for considering shear stress and coating-substrate interface tensile strength being influenced |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710014334.8A CN106769849B (en) | 2017-01-10 | 2017-01-10 | A kind of experimental rig for considering shear stress and coating-substrate interface tensile strength being influenced |
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| CN106769849B CN106769849B (en) | 2019-04-26 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109540700A (en) * | 2018-12-11 | 2019-03-29 | 华侨大学 | Test the experimental rig and method of intumescent coating and substrate interlaminar shear stress |
| CN109571302A (en) * | 2018-11-21 | 2019-04-05 | 华侨大学 | A kind of characterizing method of the semi-consolidated abrasive polishing tools interfaces bond strength based on tensile strength |
| CN116429682A (en) * | 2023-06-13 | 2023-07-14 | 深圳市宏进科技有限公司 | Electronic adhesive fatigue resistance test equipment |
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| CN102288542A (en) * | 2011-07-22 | 2011-12-21 | 华北电力大学（保定） | System and method for measuring adhesion strength of ice coating on material surface |
| AU2014100995A4 (en) * | 2014-08-25 | 2014-09-25 | Hengdian Group Innuovo Electric Co.,Ltd. | Device for Testing Bonding Strength of Tile Type Magnetic Steel |
| US20150059488A1 (en) * | 2013-09-04 | 2015-03-05 | St. John's University | Film Adhesion Detection Device and Method Thereof |
| CN104390858B (en) * | 2014-11-13 | 2016-08-17 | 常州大学 | A kind of easy device of shear rheology instrument |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010085061A (en) * | 2001-07-27 | 2001-09-07 | -- | In-mold coating apparatus and method |
| CN102288542A (en) * | 2011-07-22 | 2011-12-21 | 华北电力大学（保定） | System and method for measuring adhesion strength of ice coating on material surface |
| US20150059488A1 (en) * | 2013-09-04 | 2015-03-05 | St. John's University | Film Adhesion Detection Device and Method Thereof |
| AU2014100995A4 (en) * | 2014-08-25 | 2014-09-25 | Hengdian Group Innuovo Electric Co.,Ltd. | Device for Testing Bonding Strength of Tile Type Magnetic Steel |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109571302A (en) * | 2018-11-21 | 2019-04-05 | 华侨大学 | A kind of characterizing method of the semi-consolidated abrasive polishing tools interfaces bond strength based on tensile strength |
| CN109540700A (en) * | 2018-12-11 | 2019-03-29 | 华侨大学 | Test the experimental rig and method of intumescent coating and substrate interlaminar shear stress |
| CN109540700B (en) * | 2018-12-11 | 2024-02-02 | 华侨大学 | Test device and method for testing shearing stress between expansion type fireproof coating and substrate layer |
| CN116429682A (en) * | 2023-06-13 | 2023-07-14 | 深圳市宏进科技有限公司 | Electronic adhesive fatigue resistance test equipment |
| CN116429682B (en) * | 2023-06-13 | 2023-08-04 | 深圳市宏进科技有限公司 | Electronic adhesive fatigue resistance test equipment |
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| CN106769849B (en) | 2019-04-26 |
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