CN107036965B - Coating/matrix composite interface bond strength measuring device and method - Google Patents
Coating/matrix composite interface bond strength measuring device and method Download PDFInfo
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- CN107036965B CN107036965B CN201710384311.6A CN201710384311A CN107036965B CN 107036965 B CN107036965 B CN 107036965B CN 201710384311 A CN201710384311 A CN 201710384311A CN 107036965 B CN107036965 B CN 107036965B
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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
Abstract
The invention discloses a kind of coating/matrix composite interface bond strength measuring device and methods, its device includes testing machine, acquisition and control system and test sample clamping mechanism, testing machine includes rack, moving beam, leading screw and actuating unit, and actuating unit includes motor, belt wheel axle bed, synchronous tape spool, the first synchronous pulley, the second synchronous pulley, third synchronous pulley, the 4th synchronous pulley, the first synchronous belt and the second synchronous belt；Test sample clamping mechanism includes dial, upper roller, support holder device, coating clamper, weighing sensor, lower roll, the first displacement sensor and second displacement sensor；Acquisition and control system includes computer, data collecting card and motor driving card；Its method includes step：One, the installation of tested sample；Two, apply pressure to tested sample and carry out data acquisition；Three, Data Analysis Services.The present invention realizes the measurement of the quantization to coating/matrix composite interface bond strength, and application value is high.
Description
Technical field
The invention belongs to composite material interface adhesion measurement technical fields, and in particular to a kind of coating/matrix is compound
Material interface adhesion measurement device and method.
Background technology
Coating/matrix composite is widely used in many fields, after the surface of matrix applies last layer coating not
Matrix can be only protected, it can be with the wearability, corrosion resistance and case hardness of reinforcing material.It is combined between coating and basis material
Stripping, the cracking etc. of layer are the main failure forms of this composite material, so interface bond strength is characterization composite material matter
One important indicator of amount.Due to the diversity and complexity of coating/matrix composite system, there are no formed to be suitble to so far
In the standard method for the interface bond strength for measuring this kind of material.Currently, being commonly used to measure the interface of coating/matrix composite
The method of bond strength has：Pulling method, shearing method and scarification etc..
Pulling method is advantageous in that the interface cohesion that accurately can with quantification measure coating/matrix composite
Intensity, but the collected values of bond strength surveyed has certain limitation, is usually less than 90MPa because this method need to use it is viscous
Agent is tied, and the interface bond strength of coating/matrix composite is required to must be smaller than the adhesion strength of binder.
Shearing method is usually used in measuring the interface bond strength of the thicker composite material of coating, the work of the coating of protrusion in load
It is cut away under.But this method is disadvantageous in that there are stress concentrations close to the interface of coating free boundary, is
Reduction stress concentration, can precast groove to reduce stress concentration on sample, precast groove and increase measurement process again
Complexity.
Scarification is a kind of measurement method of sxemiquantitative, is only adapted to measure ganoine thin film coating/matrix composite
Interface bond strength, this method is stood in coating surface, is scratched coating table repeatedly with a diamond class hard material needle
Face measures the interface bond strength of coating/matrix composite by the coating of scuffing, and this method is although easy to operate, but
The theoretical foundation for still lacking science, is affected by enchancement factor, and is suitable only for coating layer thickness answering less than 50 μm
Condensation material.
In addition to it is described above these measure or evaluation coating/basal body interface bond strength method other than, also plunging,
Tape method and laser tomography etc..But these methods all have some limitations, for example, operating process complexity, examination used
Equipment costliness is tested, the preparation of sample is difficult, and measured result only can qualitatively judge that bond strength, the scope of application have limitation
Property etc..
Invention content
In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that providing a kind of structure letter
List, novel design is reasonable, realizes the quantization measurement to coating/matrix composite interface bond strength, one mesh of measurement result
It is clear, is highly practical, coating/matrix composite interface bond strength that using effect is good, application value is high measures dress
It sets.
In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of coating/matrix composite interface knot
Close strength meter, it is characterised in that：Including testing machine and acquisition and control system, and on the testing machine and
Test sample clamping mechanism for clamping tested sample；The tested sample is made of matrix and the coating being arranged in base bottom,
The width of the coating is equal with the width of matrix, and the length of the coating is less than the length of matrix；
The moving beam and be arranged in the dynamic of bottom of the frame that the testing machine includes the rack of doorframe shape, is arranged in rack
Power case is provided with the actuating unit for driving moving beam to move up and down in the headstock；The left and right sides of the rack
It is mounted on leading screw in column, is mounted on feed screw nut on two leading screws, the both ends of the moving beam are respectively with two
A feed screw nut is fixedly connected；The actuating unit includes the motor being mounted in headstock and belt wheel axle bed, the band
The synchronization tape spool being pierced by respectively outside belt wheel axle bed upper and lower ends is rotatably connected on axle block, on the output shaft of the motor
It is fixedly connected with the first synchronous pulley, the upper end of the synchronous tape spool is fixedly connected with the second synchronous pulley, the synchronous tape spool
Lower end be fixedly connected with third synchronous pulley, the lower parts of two leading screws has been fixedly connected with the 4th synchronous pulley, two
4th synchronous pulley is symmetrical arranged, on first synchronous pulley and the second synchronous pulley bridging have the first synchronous belt, described the
Bridging has the second synchronous belt on three synchronous pulleys and two the 4th synchronous pulleys；
The test sample clamping mechanism includes the dial being mounted at the top of headstock and is lifted on the upper of moving beam bottom
Roller, and the support holder device of matrix for tested sample to be clamped and the coating for tested sample to be clamped coating clamping
Device；The pressure for being applied in tested sample upper roller is provided between the upper roller and the bottom surface of moving beam to be detected
Weighing sensor, be fixedly connected with sensor stand at the top of the dial and two be symmetricly set on upper roller both sides and use
It is provided with the scale for being used to indicate lower roll present position in the lower roll of support tested sample, on the side wall of the dial, it is described
It is fixedly connected on sensor stand and is useful for the displacement of matrix at the stress point position that detection matrix is contacted with support holder device
The second of the displacement of coating at first displacement sensor and stress point position for detecting coating and coating clamp contact
The top of displacement sensor, first displacement sensor is in contact with support holder device, the top of the second displacement sensor
It is in contact with coating clamper；
The acquisition and control system includes that computer and the data collecting card and motor that connect on computers drive
Dynamic card, the output end of the output end of the weighing sensor, the output end of the first displacement sensor and second displacement sensor are equal
It is connect with the input terminal of data collecting card, the motor is connect with the output end of motor driving card.
Above-mentioned coating/matrix composite interface bond strength measuring device, it is characterised in that：The left and right of the rack
The guide post being arranged with leading screw parallel interval is mounted in two heel posts, the both ends of the moving beam are each passed through two and lead
Column.
Above-mentioned coating/matrix composite interface bond strength measuring device, it is characterised in that：The left and right of the rack
The dustproof shade for being covered in leading screw and guide post in the column is mounted on two heel post medial surfaces.
Above-mentioned coating/matrix composite interface bond strength measuring device, it is characterised in that：The sensor stand
Shape be U-shaped, the sensor stand is fixedly connected on the top of dial by two the first soket head cap screws, accordingly
There are two the unthreaded holes passed through for the first soket head cap screw for setting on the bottom surface of the sensor stand；First displacement sensor
It is fixedly connected on the side side of sensor stand by four the second soket head cap screws, the one of the corresponding sensor stand
There are four the threaded holes passed through for the second soket head cap screw for setting on the side of side；The second displacement sensor passes through four thirds
Soket head cap screw is fixedly connected on the other side side of sensor stand, on the other side side of the corresponding sensor stand
The threaded hole passed through for third soket head cap screw there are four being arranged.
Above-mentioned coating/matrix composite interface bond strength measuring device, it is characterised in that：Described matrix clamper
Include for the lateral support holder block being stuck on the matrix of tested sample and for being screwed on support holder block and for fastening
The matrix trip bolt of support holder block and matrix, the side side of corresponding described matrix grip block is provided with fastens spiral shell for matrix
Follow closely across threaded hole, the side side opposite with setting matrix trip bolt is fixedly connected with matrix on described matrix grip block
Grip block elongation bar, described matrix grip block elongation bar are in contact with the top of the first displacement sensor.
Above-mentioned coating/matrix composite interface bond strength measuring device, it is characterised in that：The coating clamper
Include for the lateral coating grip block being stuck on the coating of tested sample and for being screwed on coating grip block and for fastening
The coating trip bolt of coating grip block and coating, the side side of the corresponding coating grip block is provided with fastens spiral shell for coating
Follow closely across threaded hole, the side side opposite with setting coating trip bolt is fixedly connected with coating on the coating grip block
Grip block elongation bar, the coating grip block elongation bar are in contact with the top of second displacement sensor.
Above-mentioned coating/matrix composite interface bond strength measuring device, it is characterised in that：The weighing sensor
Model PSD-10TSJTH.
Above-mentioned coating/matrix composite interface bond strength measuring device, it is characterised in that：First displacement passes
Sensor and second displacement sensor are KTR self-recovering type linear displacement transducers.
The invention also discloses a kind of method and steps simply, realizes to coating/matrix composite interface bond strength
Quantization measure, measurement result is very clear, highly practical, using effect is good, application value is high coating/matrix it is compound
Material interface adhesion measurement method, which is characterized in that this approach includes the following steps：
Step 1: the installation of tested sample：First, support holder device is clamped on the matrix of tested sample, and will applied
Layer gripper is on the coating of tested sample, and the stress point position for making matrix be contacted with support holder device and coating and painting
The stress point position of layer clamp contact is on same vertical line；Then, the matrix one side for making tested sample upward, applies laminated
Downward, the entirety of tested sample, support holder device and coating clamper is placed on two lower rolls, and makes support holder device and
The top of one displacement sensor is in contact, and so that coating clamper and the top of second displacement sensor is in contact, makes upper roller and quilt
The contacting points position of test specimens is located at the center position of matrix；
Step 2: applying pressure to tested sample and carrying out data acquisition：Computer is operated, starts and measures, computer is logical
The rotation of motor driving card driving motor is crossed, when the motor rotates, the rotation of the first synchronous pulley, the first synchronous pulley is driven to pass through
First synchronous belt drives the rotation of the second synchronous pulley, the second synchronous pulley to drive synchronous belt shaft rotation dynamic, and synchronous tape spool drives third
Synchronous pulley rotates, and third synchronous pulley drives two the 4th synchronous pulleys to rotate synchronously by the second synchronous belt, described in two
4th synchronous pulley drives two screw synchronous rotations, when leading screw rotates, drive moving beam downward by the feed screw nut
It is mobile, when moving beam moves down, upper roller is driven to move down, when upper roller is moved to the position for touching tested sample,
Upper roller is applied to the pressure in tested sample and generates suddenly, and weighing sensor is applied to the pressure in tested sample to upper roller and carries out
It detects in real time and exports the signal detected to data collecting card, the first displacement sensor contacts matrix with support holder device
Stress point position at the displacement of matrix be measured in real time and export the signal detected to data collecting card, second displacement
Sensor is measured in real time the displacement of coating at the stress point position of coating and coating clamp contact and will detect
Signal is exported to data collecting card, and data collecting card acquisition upper roller is applied to pressure value, matrix and matrix in tested sample and presss from both sides
The shift value of matrix and coating and coating at the stress point position of coating clamp contact at the stress point position of holder contact
Output is to computer after shift value, after upper roller, which is applied to the pressure value in tested sample, reaches preset pressure initial value F ',
The angle, θ that computer start recording is turned over by motor driving card driving motor, according to formulaIt calculates
The displacement Y of matrix to the stress point position of upper roller and substrate contact, and just record a upper roller every time Δ t and be applied to
Displacement Y, matrix and the support holder of matrix at the stress point position of pressure value F, upper roller and substrate contact in tested sample
The position of the shift value R of matrix and coating and coating at the stress point position of coating clamp contact at the stress point position of device contact
Shifting value S；Wherein, z1For the number of teeth of the first synchronous pulley, z2For the number of teeth of the second synchronous pulley, z3For the tooth of third synchronous pulley
Number, z4For the number of teeth of the 4th synchronous pulley, p is the helical pitch of leading screw；
Step 3: Data Analysis Services：First, computer is according to formula α=arctan [(S+h-R)/L]-arctan (h/
L the peel angle α of matrix and coating) is calculated；Then, for computer using Y as horizontal axis, α is the longitudinal axis, draws out the song that α changes with Y
Line chart, and using Y as horizontal axis, F is the longitudinal axis, draws out the curve graph that F changes with Y；Finally, the curve that computer first changes in α with Y
α is found on figure and gradually the value of the corresponding Y of increased point and is denoted as critical stripping displacement Y0 since 0, then the song changed with Y in F
The value of the corresponding F of critical stripping displacement Y0 is found on line chart and is denoted as critical stripping pressure F0；Wherein, h is that matrix is pressed from both sides with matrix
Initial distance between the stress point position and coating and the stress point position of coating clamp contact of holder contact, L is upper roller
The stress point position and coating contacted with support holder device with the contacting points position of tested sample to matrix connects with coating clamper
The horizontal distance of vertical line where tactile stress point position.
Above-mentioned method, it is characterised in that：The value of F ' described in step 2 is 5N~15N, Δ t described in step 2
Value is 10ms~100ms.
Compared with the prior art, the present invention has the following advantages：
1, coating of the present invention/matrix composite interface bond strength measuring device is simple in structure, novel in design reasonable, makes
With easy to operate.
2, the present invention can measure to obtain the peel angle α of the matrix of tested sample and coating, critical stripping displacement Y0, critical
The curve graph that stripping pressure F0, α changes with the Y curve graphs changed and F with Y is realized to coating/matrix composite interface knot
The quantization for closing intensity measures, and measured amount can quantitatively reflect coating/matrix composite interface bond strength.
3, the method and step of coating of the present invention/matrix composite interface bond strength measurement method is simple, measurement result
It can show on computers, check convenient for storage and in the future, and measurement result is very clear.
4, the high certainty of measurement of coating of the present invention/matrix composite interface bond strength measuring device, functional reliability
Height, and it is not susceptible to failure.
5, the processing and fabricating of test sample clamping mechanism of the present invention is convenient, is suitable for producing in enormous quantities so that the coating/matrix is compound
Material interface adhesion measurement device is convenient for promoting the use of.
6, the present invention's is highly practical, and using effect is good, and application value is high.
In conclusion the novel design of the present invention is rationally, realize to coating/matrix composite interface bond strength
Quantization measures, and measurement result is very clear, highly practical, and using effect is good, and application value is high.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Description of the drawings
Fig. 1 is the stereogram of coating of the present invention/matrix composite interface bond strength measuring device.
Fig. 2 is the front view of Fig. 1.
Fig. 3 is the A-A sectional views of Fig. 1.
Fig. 4 is the structural schematic diagram of tested sample of the present invention.
Fig. 5 is the stereogram of test sample clamping mechanism of the present invention.
Fig. 6 is the front view of Fig. 5.
Fig. 7 is connection relationship diagram of the test sample clamping mechanism of the present invention in addition to upper roller.
Fig. 8 is the structural schematic diagram of support holder device of the present invention.
Fig. 9 is the structural schematic diagram of coating clamper of the present invention.
Figure 10 is the schematic block circuit diagram of acquisition and control system of the present invention.
Figure 11 is the method flow block diagram of coating of the present invention/matrix composite interface bond strength measurement method.
Figure 12 is the status diagram when matrix of tested sample of the present invention i.e. will be peeling-off with coating.
Figure 13 is status diagram of the matrix of tested sample of the present invention with coating after peeling-off.
Figure 14 is the curve graph that α changes with Y.
Figure 15 is the curve graph that F changes with Y.
Reference sign:
1-tested sample；1-1-matrix；1-2-coating；
2-1-rack；2-2-guide post；2-3-moving beam；
2-4-leading screw；2-5-dustproof shade；The second synchronous pulleys of 2-6-；
The first synchronous belts of 2-7-；2-8-belt wheel axle bed；The 4th synchronous pulleys of 2-9-；
2-10-third synchronous pulley；The second synchronous belts of 2-11-；2-12-motor；
2-13-synchronization tape spool；The first synchronous pulleys of 2-14-；3-lower rolls；
4-dials；5-upper rollers；The first displacement sensors of 6-1-；
6-2-second displacement sensor；7-coating clampers；7-1-coating grip block；
7-2-coating trip bolt；7-3-coating grip block elongation bar；8-support holder devices；
8-1-support holder block；8-2-matrix trip bolt；8-3-support holder block elongation bar；
9-sensor stands；10-headstocks；The first soket head cap screws of 11-1-；
The second soket head cap screws of 11-2-；11-3-third soket head cap screw；12-computers；
13-data collecting cards；14-motor driving cards；15-weighing sensors.
Specific implementation mode
As shown in Figure 1, Figure 2 and Figure 3, coating of the invention/matrix composite interface bond strength measuring device, including
Testing machine and acquisition and control system, and the specimen clamping machine on testing machine and for clamping tested sample 1
Structure；As shown in figure 4, the tested sample 1 is made of matrix 1-1 and the coating 1-2 being arranged in the bottoms matrix 1-1, the coating
The width of 1-2 is equal with the width of matrix 1-1, and the length of the coating 1-2 is less than the length of matrix 1-1；
As shown in Figure 1, Figure 2 and Figure 3, the testing machine includes the rack 2-1 of doorframe shape, the shifting being arranged on rack 2-1
It moves crossbeam 2-3 and the headstock 10 in the bottoms rack 2-1 is set, be provided in the headstock 10 for driving moving beam 2-
3 actuating units moved up and down；Leading screw 2-4, two leading screw 2- are mounted in the left and right sides column of the rack 2-1
Feed screw nut is mounted on 4, the both ends of the moving beam 2-3 are fixedly connected with two feed screw nuts respectively；It is described
Actuating unit includes the motor 2-12 being mounted in headstock 10 and is rotatablely connected on belt wheel axle bed 2-8, the belt wheel axle bed 2-8
There is the synchronization tape spool 2-13 being pierced by respectively outside belt wheel axle bed 2-8 upper and lower ends, is fixed on the output shaft of the motor 2-12
The upper end for being connected with the first synchronous pulley 2-14, the synchronous tape spool 2-13 is fixedly connected with the second synchronous pulley 2-6, described same
The lower end of step tape spool 2-13 is fixedly connected with third synchronous pulley 2-10, and the lower part of two leading screw 2-4 has been fixedly connected with
4th synchronous pulley 2-9, two the 4th synchronous pulley 2-9 are symmetrical arranged, the first synchronous pulley 2-14 and the second synchronous belt
Bridging has to bridge on the first synchronous belt 2-7, the third synchronous pulley 2-10 and two the 4th synchronous pulley 2-9 and have on wheel 2-6
Second synchronous belt 2-11；
In conjunction with Fig. 5 and Fig. 6, the test sample clamping mechanism includes being mounted on the dial 4 at 10 top of headstock and being lifted on
The upper roller 5 of the bottoms moving beam 2-3, and the support holder device 8 of matrix 1-1 for tested sample 1 to be clamped and for being clamped
The coating clamper 7 of the coating 1-2 of tested sample 1；Be provided between the upper roller 5 and the bottom surface of moving beam 2-3 for pair
The weighing sensor 15 that the pressure that upper roller 5 is applied in tested sample 1 is detected, the top of the dial 4 are fixedly connected
There is a sensor stand 9 and two are symmetricly set on 5 both sides of upper roller and are used to support the lower roll 3 of tested sample 1, the dial 4
Side wall on be provided with the scale for being used to indicate 3 present position of lower roll, be fixedly connected on the sensor stand 9 and be useful for detecting
It first displacement sensor 6-1 of the displacement of matrix 1-1 and is used at the stress point position that matrix 1-1 is contacted with support holder device 8
The second displacement sensor 6-2 of the displacement of coating 1-2, institute at the stress point position that detection coating 1-2 is contacted with coating clamper 7
The top for stating the first displacement sensor 6-1 is in contact with support holder device 8, the top of the second displacement sensor 6-2 and painting
Layer clamper 7 is in contact；
As shown in Figure 10, the acquisition and control system includes computer 12 and connects data on the computer 12
Capture card 13 and motor driving card 14, the output end of the weighing sensor 15, the output end of the first displacement sensor 6-1 and
The output end of two displacement sensor 6-2 is connect with the input terminal of data collecting card 13, the motor 2-12 and motor driving card
14 output end connection.
In the present embodiment, as shown in Figure 1, being mounted in the left and right sides column of the rack 2-1 parallel with leading screw 2-4
The both ends of spaced guide post 2-2, the moving beam 2-3 are each passed through two guide post 2-2.Guide post 2-2 can be to movement
Moving up and down for crossbeam 2-3 is oriented to, so as to ensure precision that moving beam 2-3 is moved up and down.
In the present embodiment, as shown in Figure 1, being mounted on the left and right sides column medial surface of the rack 2-1 for inciting somebody to action
Leading screw 2-4 and guide post 2-2 is covered in the dustproof shade 2-5 in the column.By the way that dustproof shade 2-5 is arranged, can prevent aerial
Dust and other impurities are attached on leading screw 2-4 and guide post 2-2.
In the present embodiment, as shown in fig. 7, the shape of the sensor stand 9 is U-shaped, the sensor stand 9 passes through
Two the first soket head cap screw 11-1 are fixedly connected on the top of dial 4, are arranged on the bottom surface of the corresponding sensor stand 9
There are two the unthreaded holes passed through for the first soket head cap screw 11-1；The first displacement sensor 6-1 passes through hexagonal in four second
Screw 11-2 is fixedly connected on the side side of sensor stand 9, is arranged on the side side of the corresponding sensor stand 9
There are four the threaded holes passed through for the second soket head cap screw 11-2；The second displacement sensor 6-2 passes through in four thirds six
Angle screw 11-3 is fixedly connected on the other side side of sensor stand 9, the other side side of the corresponding sensor stand 9
There are four the threaded holes passed through for third soket head cap screw 11-3 for upper setting.
In the present embodiment, as shown in figure 8, described matrix clamper 8 includes the matrix 1- for being laterally stuck in tested sample 1
Support holder block 8-1 on 1 and for being screwed on support holder block 8-1 and for fastening support holder block 8-1 and matrix 1-1's
Matrix trip bolt 8-2, the side side of corresponding described matrix grip block 8-1 is provided with to be passed through for matrix trip bolt 8-2
Threaded hole, the side side opposite with setting matrix trip bolt 8-2 is fixedly connected with matrix folder on described matrix grip block 8-1
Block elongation bar 8-3 is held, described matrix grip block elongation bar 8-3 is in contact with the top of the first displacement sensor 6-1.Specific implementation
When, described matrix trip bolt 8-2 is milled screw.
In the present embodiment, as shown in figure 9, the coating clamper 7 includes the coating 1- for being laterally stuck in tested sample 1
Coating grip block 7-1 on 2 and for being screwed on coating grip block 7-1 and for fastening coating grip block 7-1 and coating 1-2's
Coating trip bolt 7-2, the side side of the corresponding coating grip block 7-1 is provided with to be passed through for coating trip bolt 7-2
Threaded hole, the side side opposite with setting coating trip bolt 7-2 is fixedly connected with blanket clip on the coating grip block 7-1
Block elongation bar 7-3 is held, the coating grip block elongation bar 7-3 is in contact with the top of second displacement sensor 6-2.Specific implementation
When, the coating trip bolt 7-2 is milled screw.
In the present embodiment, the model PSD-10TSJTH of the weighing sensor 15.
In the present embodiment, the first displacement sensor 6-1 and second displacement sensor 6-2 are that KTR self-recovering types are straight
Linear movement pick-up.It is provided with Self-resetting spring on KTR self-recovering type linear displacement transducers, which can make
KTR self-recovering type linear displacement transducers realization automatically reset, and can ensure support holder device 8 always with the first displacement sensing
The top of device 6-1 is in contact, and coating clamper 7 is in contact with the top of second displacement sensor 6-2 always, just ensure that in this way
First displacement sensor 6-1 can to the displacement of matrix 1-1 at stress point position that matrix 1-1 is contacted with support holder device 8 into
Row detection in real time, second displacement sensor 6-2 can be to coatings at stress point position that coating 1-2 is contacted with coating clamper 7
The displacement of 1-2 is measured in real time.
As shown in figure 11, coating of the invention/matrix composite interface bond strength measurement method, including following step
Suddenly：
Step 1: the installation of tested sample 1：First, support holder device 8 is clamped on the matrix 1-1 of tested sample 1,
And the stress that coating clamper 7 is clamped on the coating 1-2 of tested sample 1, and matrix 1-1 is made to be contacted with support holder device 8
The stress point position that point position and coating 1-2 are contacted with coating clamper 7 is on same vertical line；Then, make tested sample 1
Upward, coating 1-2 mono- is face-down, and the entirety of tested sample 1, support holder device 8 and coating clamper 7 is put for matrix 1-1 one sides
On two lower rolls 3, and support holder device 8 and the top of the first displacement sensor 6-1 is made to be in contact, make coating clamper 7 with
The top of second displacement sensor 6-2 is in contact, and the contacting points position of upper roller 5 and tested sample 1 is made to be located at the center of matrix 1-1
At position；
Step 2: applying pressure to tested sample 1 and carrying out data acquisition：Computer 12 is operated, starts and measures, computer
12, by the 14 driving motor 2-12 rotations of motor driving card, when the motor 2-12 is rotated, drive the first synchronous pulley 2-14 to turn
Dynamic, the first synchronous pulley 2-14 drives the second synchronous pulley 2-6 to rotate by the first synchronous belt 2-7, the second synchronous pulley 2-6 bands
Dynamic synchronous tape spool 2-13 rotations, synchronous tape spool 2-13 drive the 2-10 rotations of third synchronous pulley, third synchronous pulley 2-10 to pass through
Second synchronous belt 2-11 drives two the 4th synchronous pulley 2-9 to rotate synchronously, and two the 4th synchronous pulley 2-9 drive two
Leading screw 2-4 is rotated synchronously, and when leading screw 2-4 is rotated, drives moving beam 2-3 to move down by the feed screw nut, mobile horizontal
When beam 2-3 is moved down, upper roller 5 is driven to move down, when upper roller 5 is moved to the position for touching tested sample 1, upper roller 5
The pressure being applied in tested sample 1 generates suddenly, weighing sensor 15 to upper roller 5 be applied to the pressure in tested sample 1 into
Row detects and exports the signal detected to data collecting card 13 in real time, and the first displacement sensor 6-1 is to matrix 1-1 and matrix
The displacement of matrix 1-1 is measured in real time and exports the signal detected to data at the stress point position that clamper 8 contacts
Capture card 13, at the stress point position that second displacement sensor 6-2 contacts coating 1-2 with coating clamper 7 position of coating 1-2
Shifting is measured in real time and exports the signal detected to data collecting card 13, and data collecting card 13 acquires upper roller 5 and is applied to
The shift value of matrix 1-1 and painting at the stress point position that pressure value, matrix 1-1 in tested sample 1 are contacted with support holder device 8
Output is to computer 12 after the shift value of coating 1-2 at the stress point position that layer 1-2 is contacted with coating clamper 7, when upper roller 5 is applied
After the pressure value being added in tested sample 1 reaches preset pressure initial value F ', 12 start recording of computer is driven by motor
Block the angle, θ that 14 driving motor 2-12 are turned over, according to formulaUpper roller 5 is calculated to contact with matrix 1-1
Stress point position at matrix 1-1 displacement Y, and just record a upper roller 5 every time Δ t and be applied in tested sample 1
Pressure value F, at the stress point position that is contacted with matrix 1-1 of upper roller 5 matrix 1-1 displacement Y, matrix 1-1 and support holder
At the stress point position that the shift value R and coating 1-2 of matrix 1-1 is contacted with coating clamper 7 at the stress point position that device 8 contacts
The shift value S of coating 1-2；Wherein, z1For the number of teeth of the first synchronous pulley 2-14, z2For the number of teeth of the second synchronous pulley 2-6, z3
For the number of teeth of third synchronous pulley 2-10, z4For the number of teeth of the 4th synchronous pulley 2-9, p is the helical pitch of leading screw 2-4；
In in this implementation, the value of F ' described in step 2 is 5N~15N, and the value of Δ t described in step 2 is 10ms
~100ms.Preferably, the value of F ' described in step 2 is 10N, and the value of Δ t described in step 2 is 50ms.
Step 3: Data Analysis Services：First, computer 12 is according to formula α=arctan [(S+h-R)/L]-arctan
(h/L) the peel angle α of matrix 1-1 and coating 1-2 is calculated；Then, for computer 12 using Y as horizontal axis, α is the longitudinal axis, draws out α
With the curve graph that Y changes, and using Y as horizontal axis, F is the longitudinal axis, draws out the curve graph that F changes with Y；Finally, computer 12 is first in α
The value of the corresponding Y of α gradual increased points since 0 ing is found in curve graph with Y variations and is denoted as critical stripping displacement Y0, then
The value of the corresponding F of critical stripping displacement Y0 is found in the curve graph that F changes with Y and is denoted as critical stripping pressure F0；Wherein, h is
The stress point position that the stress point position and coating 1-2 that matrix 1-1 is contacted with support holder device 8 are contacted with coating clamper 7 it
Between initial distance, L is the stress that is contacted to matrix 1-1 with support holder device 8 with the contacting points position of tested sample 1 of upper roller 5
The horizontal distance of vertical line where the stress point position that point position and coating 1-2 are contacted with coating clamper 7.Critical stripping displacement
Y0, critical stripping pressure F0, α have reacted the coating 1-2 of tested sample 1 with the Y curve graphs changed and F with the Y curve graphs changed
With the interface bond strength of matrix 1-1；Critical stripping displacement Y0 and critical stripping pressure F0 are bigger, coating/matrix composite
Interface bond strength it is better.
As shown in Figure 12 and Figure 13, the stress point that upper roller 5 is contacted with matrix 1-1 is A points, matrix 1-1 and support holder device 8
The stress point of contact is B points, and the stress point that coating 1-2 is contacted with coating clamper 7 is C points；A points and B points are respectively positioned on matrix 1-1
Center line on, C points are located on the center line of coating 1-2, and the initial distance between B points and C points is h, A points to B points and C points institute
It is L in the horizontal distance of vertical line, when reaching critical exfoliated state, the displacement of A points is Y0.
In the present embodiment, the curve graph that the α that draws out changes with Y is as shown in figure 14, the curve that the F drawn out changes with Y
Figure is as shown in figure 15.It is seen from figure 14 that with the increase of Y, α has just started to be 0, as Y=Y0, the coating of tested sample 1
1-2 reaches critical exfoliated state with matrix 1-1, and hereafter, α becomes larger, in this whole process, it can be seen from fig. 15 that F
Change with Y.
In conclusion the present invention supports tested sample 1 by two lower rolls 3 below tested sample 1, it is tested
Sample 1 provides a pair of of end reaction, and the centre position of the upper surface of tested sample 1 sets that there are one upper rollers 5 to apply one to tested sample 1
A downward pressure, the surface that upper roller 5 presses against matrix 1-1 move down, and tested sample 1 gradually changes forming V-shape and coating occurs
The stripping of 1-2 and matrix 1-1；The present invention can measure to obtain the peel angle α of the matrix 1-1 and coating 1-2 of tested sample 1, face
The curve graph that boundary's stripping displacement Y0, critical stripping pressure F0, α change with the Y curve graphs changed and F with Y, realize to coating/
The quantization of matrix composite interface bond strength measures, and easy to operate.
The above is only presently preferred embodiments of the present invention, is not imposed any restrictions to the present invention, every according to the present invention
Technical spirit changes any simple modification, change and equivalent structure made by above example, still falls within skill of the present invention
In the protection domain of art scheme.
Claims (10)
1. a kind of coating/matrix composite interface bond strength measuring device, including testing machine and on testing machine and
Test sample clamping mechanism for clamping tested sample (1), the testing machine include the rack (2-1) of doorframe shape, are arranged in rack
The headstock (10) of moving beam (2-3) on (2-1) and setting in the bottom rack (2-1)；The test sample clamping mechanism includes
Dial (4) at the top of headstock (10) and the upper roller (5) for being lifted on the bottom moving beam (2-3), the upper roller (5)
The pressure for being applied in tested sample (1) upper roller (5) is provided between the bottom surface of moving beam (2-3) to be detected
Weighing sensor (15), be fixedly connected with that there are two be symmetricly set on upper roller (5) both sides and be used at the top of the dial (4)
The lower roll (3) of tested sample (1) is supported, is provided on the side wall of the dial (4) and is used to indicate lower roll (3) present position
Scale；It is characterized in that：The coating/matrix composite interface bond strength measuring device further includes data acquisition and control
System, the tested sample (1) are made of matrix (1-1) and the coating (1-2) being arranged in the bottom matrix (1-1), the coating
The width of (1-2) is equal with the width of matrix (1-1), and the length of the coating (1-2) is less than the length of matrix (1-1)；
The actuating unit for driving moving beam (2-3) to move up and down is provided in the headstock (10)；Rack (the 2-
1) it is mounted on leading screw (2-4) in left and right sides column, feed screw nut is mounted on two leading screws (2-4), it is described
The both ends of moving beam (2-3) are fixedly connected with two feed screw nuts respectively；The actuating unit includes being mounted on power
Motor (2-12) in case (10) and belt wheel axle bed (2-8) are rotatably connected on the belt wheel axle bed (2-8) and are pierced by band respectively
Synchronization tape spool (2-13) outside axle block (2-8) upper and lower ends is fixedly connected on the output shaft of the motor (2-12)
The upper end of one synchronous pulley (2-14), the synchronous tape spool (2-13) is fixedly connected with the second synchronous pulley (2-6), the synchronization
The lower end of tape spool (2-13) is fixedly connected with third synchronous pulley (2-10), and the lower part of two leading screws (2-4) is fixed to be connected
Be connected to the 4th synchronous pulley (2-9), two the 4th synchronous pulleys (2-9) are symmetrical arranged, first synchronous pulley (2-14) and
Bridging has the first synchronous belt (2-7) on second synchronous pulley (2-6), and the third synchronous pulley (2-10) is the 4th synchronous with two
Bridging has the second synchronous belt (2-11) on belt wheel (2-9)；
The test sample clamping mechanism further includes support holder device (8) for the matrix of tested sample (1) (1-1) to be clamped and is used for
The coating clamper (7) of the coating (1-2) of tested sample (1) is clamped；It is fixedly connected with sensor at the top of the dial (4)
Holder (9), be fixedly connected on the sensor stand (9) be useful for that detection matrix (1-1) contacts with support holder device (8) by
The first displacement sensor (6-1) of the displacement of matrix (1-1) at the position of force and for detecting coating (1-2) and coating clamper
(7) contact stress point position at coating (1-2) displacement second displacement sensor (6-2), first displacement sensor
The top of (6-1) is in contact with support holder device (8), top and the coating clamper (7) of the second displacement sensor (6-2)
It is in contact；
The acquisition and control system includes computer (12) and the data collecting card (13) being connected on computer (12)
With motor driving card (14), the output end of the weighing sensor (15), the output end and second of the first displacement sensor (6-1)
The output end of displacement sensor (6-2) is connect with the input terminal of data collecting card (13), and the motor (2-12) is driven with motor
The output end connection of dynamic card (14).
2. coating described in accordance with the claim 1/matrix composite interface bond strength measuring device, it is characterised in that：Institute
State the guide post (2-2) being mounted in the left and right sides column of rack (2-1) with the setting of leading screw (2-4) parallel interval, the shifting
The both ends of dynamic crossbeam (2-3) are each passed through two guide posts (2-2).
3. coating/matrix composite interface bond strength measuring device according to claim 2, it is characterised in that：Institute
State be mounted on the left and right sides column medial surface of rack (2-1) it is described for leading screw (2-4) and guide post (2-2) to be covered in
Dustproof shade (2-5) in column.
4. coating described in accordance with the claim 1/matrix composite interface bond strength measuring device, it is characterised in that：Institute
The shape for stating sensor stand (9) is U-shaped, and the sensor stand (9) is solid by two the first soket head cap screws (11-1)
Surely it is connected to the top of dial (4), there are two supply hexagonal spiral shell in first for setting on the bottom surface of the corresponding sensor stand (9)
The unthreaded hole that nail (11-1) passes through；First displacement sensor (6-1) connects by the way that four the second soket head cap screws (11-2) are fixed
It is connected on the side side of sensor stand (9), there are four for for setting on the side side of the corresponding sensor stand (9)
The threaded hole that two soket head cap screws (11-2) pass through；The second displacement sensor (6-2) passes through four third soket head cap screws
(11-3) is fixedly connected on the other side side of sensor stand (9), the other side side of the corresponding sensor stand (9)
There are four the threaded holes passed through for third soket head cap screw (11-3) for upper setting.
5. coating described in accordance with the claim 1/matrix composite interface bond strength measuring device, it is characterised in that：Institute
It includes the support holder block (8-1) and use for being laterally stuck on the matrix (1-1) of tested sample (1) to state support holder device (8)
In the matrix trip bolt (8- for being screwed on support holder block (8-1) and be used to fasten support holder block (8-1) and matrix (1-1)
2), the side side of corresponding described matrix grip block (8-1) is provided with the threaded hole passed through for matrix trip bolt (8-2), institute
It states side side opposite with setting matrix trip bolt (8-2) on support holder block (8-1) and is fixedly connected with support holder block
Elongation bar (8-3), described matrix grip block elongation bar (8-3) are in contact with the top of the first displacement sensor (6-1).
6. coating described in accordance with the claim 1/matrix composite interface bond strength measuring device, it is characterised in that：Institute
It includes the coating grip block (7-1) and use for being laterally stuck on the coating (1-2) of tested sample (1) to state coating clamper (7)
In the coating trip bolt (7- for being screwed on coating grip block (7-1) and be used to fasten coating grip block (7-1) and coating (1-2)
2), the side side of the corresponding coating grip block (7-1) is provided with the threaded hole passed through for coating trip bolt (7-2), institute
It states side side opposite with setting coating trip bolt (7-2) on coating grip block (7-1) and is fixedly connected with coating grip block
Elongation bar (7-3), the coating grip block elongation bar (7-3) are in contact with the top of second displacement sensor (6-2).
7. coating described in accordance with the claim 1/matrix composite interface bond strength measuring device, it is characterised in that：Institute
State the model PSD-10TSJTH of weighing sensor (15).
8. coating described in accordance with the claim 1/matrix composite interface bond strength measuring device, it is characterised in that：Institute
It is KTR self-recovering type linear displacement transducers to state the first displacement sensor (6-1) and second displacement sensor (6-2).
9. a kind of carrying out the side that coating/matrix composite interface bond strength measures using device as described in claim 1
Method, which is characterized in that this approach includes the following steps：
Step 1: the installation of tested sample (1)：First, support holder device (8) is clamped in the matrix (1-1) of tested sample (1)
On, and coating clamper (7) is clamped on the coating (1-2) of tested sample (1), and make matrix (1-1) and support holder device
(8) the stress point position that the stress point position and coating (1-2) contacted is contacted with coating clamper (7) is on same vertical line；
Then, making matrix (1-1) one side of tested sample (1), coating (1-2) one is face-down, and tested sample (1), matrix are pressed from both sides upward
Holder (8) and the entirety of coating clamper (7) are placed on two lower rolls (3), and make support holder device (8) and the first displacement sensing
The top of device (6-1) is in contact, and so that coating clamper (7) and the top of second displacement sensor (6-2) is in contact, makes upper roller
(5) it is located at the center position of matrix (1-1) with the contacting points position of tested sample (1)；
Step 2: applying pressure to tested sample (1) and carrying out data acquisition：Computer (12) is operated, starts and measures, computer
(12) it is rotated by motor driving card (14) driving motor (2-12), when the motor (2-12) rotates, drives the first synchronous belt
(2-14) rotation is taken turns, the first synchronous pulley (2-14) drives the second synchronous pulley (2-6) to rotate by the first synchronous belt (2-7),
Second synchronous pulley (2-6) drives synchronous tape spool (2-13) to rotate, and synchronous tape spool (2-13) drives third synchronous pulley (2-10)
Rotation, third synchronous pulley (2-10) drive two the 4th synchronous pulleys (2-9) to rotate synchronously by the second synchronous belt (2-11),
Two the 4th synchronous pulleys (2-9) drive two leading screws (2-4) to rotate synchronously, and when leading screw (2-4) rotates, pass through the silk
Thick stick nut drives moving beam (2-3) to move down, and when moving beam (2-3) moves down, upper roller (5) is driven to move down,
When upper roller (5) is moved to the position for touching tested sample (1), the pressure that upper roller (5) is applied in tested sample (1) is unexpected
It generates, pressure that weighing sensor (15) is applied in tested sample (1) upper roller (5) is measured in real time and will detect
Signal, which exports, gives data collecting card (13), and the first displacement sensor (6-1) contacts matrix (1-1) with support holder device (8)
The displacement of matrix (1-1), which is measured in real time and exports the signal detected, at stress point position gives data collecting card (13),
The position of coating (1-2) at the stress point position that second displacement sensor (6-2) contacts coating (1-2) with coating clamper (7)
Shifting, which is measured in real time and exports the signal detected, gives data collecting card (13), and data collecting card (13) acquires upper roller (5)
Matrix (1- at the stress point position that the pressure value that is applied in tested sample (1), matrix (1-1) are contacted with support holder device (8)
1) it is exported after the shift value of coating (1-2) at the stress point position that shift value and coating (1-2) is contacted with coating clamper (7)
Computer (12) is given, after the pressure value that upper roller (5) is applied in tested sample (1) reaches preset pressure initial value F ', meter
The angle, θ that calculation machine (12) start recording is turned over by motor driving card (14) driving motor (2-12), according to formulaThe displacement of matrix (1-1) at the stress point position that upper roller (5) is contacted with matrix (1-1) is calculated
Y, and just record pressure value F, upper roller (5) and the matrix (1- that a upper roller (5) is applied in tested sample (1) every time Δ t
1) the stress point that displacement Y, the matrix (1-1) of matrix (1-1) are contacted with support holder device (8) at the stress point position contacted
Set coating (1-2) at the stress point position that the shift value R for locating matrix (1-1) and coating (1-2) are contacted with coating clamper (7)
Shift value S；Wherein, z1For the number of teeth of the first synchronous pulley (2-14), z2For the number of teeth of the second synchronous pulley (2-6), z3For third
The number of teeth of synchronous pulley (2-10), z4For the number of teeth of the 4th synchronous pulley (2-9), p is the helical pitch of leading screw (2-4)；
Step 3: Data Analysis Services：First, computer (12) is according to formula α=arctan [(S+h-R)/L]-arctan (h/
L the peel angle α of matrix (1-1) and coating (1-2)) is calculated；Then, for computer (12) using Y as horizontal axis, α is the longitudinal axis, is drawn
Go out the curve graph that α changes with Y, and using Y as horizontal axis, F is the longitudinal axis, draws out the curve graph that F changes with Y；Finally, computer (12)
The value of the corresponding Y of α gradual increased points since 0 is first found in the curve graph that α change with Y and is denoted as critical stripping displacement
Y0, then find in the curve graph that F changes with Y the value of the corresponding F of critical stripping displacement Y0 and be denoted as critical stripping pressure F0；Its
In, h is that the stress point position that matrix (1-1) is contacted with support holder device (8) and coating (1-2) are contacted with coating clamper (7)
Stress point position between initial distance, L is the contacting points position of upper roller (5) and tested sample (1) to matrix (1-1) and base
It is vertical where the stress point position that the stress point position of body clamper (8) contact and coating (1-2) are contacted with coating clamper (7)
The horizontal distance of line.
10. according to the method for claim 9, it is characterised in that：The value of F ' described in step 2 is 5N~15N, step
The value of Δ t described in two is 10ms~100ms.
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| CN109406394A (en) * | 2018-12-20 | 2019-03-01 | 浙江工业大学 | A kind of film and basal body binding force stepper motor drive gear drive measuring device |
| CN110132839A (en) * | 2019-04-19 | 2019-08-16 | 江苏大学 | Base of the one kind for composite bimetal pipe covers pipe interface bond strength testing mould and method |
| CN112924377A (en) * | 2019-12-06 | 2021-06-08 | 昆山华复精密金属有限公司 | Test system and method for stripping force of paint spraying product |
| CN111157447A (en) * | 2020-01-03 | 2020-05-15 | 云南名博包装印刷有限公司 | Device for testing heat resistance of adhesive and testing method using device |
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