CN105067518B - A kind of method that bonding agent adhesive property for flat substrates is tested - Google Patents
A kind of method that bonding agent adhesive property for flat substrates is tested Download PDFInfo
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- CN105067518B CN105067518B CN201510599015.9A CN201510599015A CN105067518B CN 105067518 B CN105067518 B CN 105067518B CN 201510599015 A CN201510599015 A CN 201510599015A CN 105067518 B CN105067518 B CN 105067518B
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Abstract
The invention discloses a kind of bonding agent adhesive property test device for flat substrates, including：Flat substrates；Loading blocks, it is used to form test assembly after being adhesively fixed with flat substrates；And tension test component charging assembly, it includes testing machine loading connector, test assembly connector and attachment means；Wherein, attachment means, test assembly connector and testing machine loading connector are sequentially connected；Test assembly is connected by attachment means with test assembly connector, and testing machine loading connector is connected with testing machine, carries out tension failure failure test.The invention also discloses a kind of bonding agent adhesive property method of testing and empirical calibration method for flat substrates.The present invention have it is simple in construction, easy to operate, can effectively test certain bonding agent and evaluated relative to the adhesive property between flat substrates, and to it, while also can be to arbitrarily based on drawing the features such as test assembly for cutting combination be tested.
Description
Technical field
The present invention relates to adhesive property testing field, and in particular to a kind of bonding agent adhesive property for flat substrates is surveyed
The method of examination.
Background technology
Adhesive technology is a kind of Material Joining Technology commonly used in engineering.With traditional welding, riveting, bolt connection etc. its
He compares connected mode, and adhesive technology has technique simplicity, economical and efficient, mitigates car body weight, reduction energy consumption, delays the noise reduction that shakes,
The distribution of connector upper stress is relatively uniform, and suitable material is extensive and can realize dissimilar material joining, many advantages, such as outward appearance is neat.
In recent years since, the fast development and people with bonding agent are to the comfortableness of vehicle, security, light-weighted requirement
More and more higher, application of the adhesive technology in automobile making is increasingly extensive.Simultaneously because various new materials such as carbon fiber, aluminium are closed
Gold, composite etc. are greatly improved in the utilization rate of vehicle manufacturing industry, and adhesive technology connects skill as a kind of new material
Art, plays more and more important role in the connection of foreign material.
Although adhesive technology has many advantages compared with traditional material connected mode, applied in the connection of foreign material
It is increasingly extensive, but about bonding agent relative to flat substrates adhesive property in terms of still lack experimental study, especially draw cut group
Bonding agent lacks effective research meanses relative to the adhesive property between flat substrates in engineering under combined stress state.
The adhesive property test method of current bonding agent mainly includes tension test, shearing of thin disc experiment, disbonded test etc..
In shearing of thin disc experiment, thin plate adherend is easily by stretch bending during tensile loads, and adherend deformation pattern is as shown in Figure 1.Easily cause
Bonding region institute loaded is not pure shear, more complicated stress state occurs, it is impossible to as evaluation bonding agent in pure shear
The foundation of adhesive property under stress state.A kind of loading blocks using aluminium alloy as material are devised for this present invention, it is ensured that
Test specimen does not occur bending and deformation in process of the test, and the load acted on bonding plane will not change, while in view of part
Material is processed into the block test specimen of large scale, and not only operation difficulty is big, and increase experimentation cost, easily causes waste, thus by this
A little materials are processed into flat substrates, by being bonded flat substrates in aluminium alloy loading blocks, reach test bonding agent relative to piece
The purpose of shape substrate bonding performance.
And in disbonded test, the main tension stress effect of bonding glue-line, it is impossible to deposited extensively in reflection body structure comprehensively
Drawing cut combined stress state under bonding agent adhesive property.Not only devised for this present invention for testing pure extension, it is pure
The pure extension of bonding agent adhesive property and pure shear aluminium alloy loading blocks under shear state, while being cut according to different drawings
Than devising and drawing the aluminium alloy loading blocks for cutting bonding agent adhesive property under combined stress state for testing, by being drawn different
Cut than aluminium alloy loading blocks on be bonded flat substrates, reach that test drawing cuts under combined stress state bonding agent relative to sheet base
The purpose of the adhesive property of material.
The content of the invention
The present invention has designed and developed a kind of bonding agent adhesive property test device and method for flat substrates.
The first goal of the invention of the present invention is that research mesh is reached by the flat substrates being bonded in aluminium alloy loading blocks
Experimental provision, can effectively test certain bonding agent and be carried out relative to the adhesive property between flat substrates, and to it
Evaluate, while the features such as can also testing the test assembly that combination is cut in any drawing.
The second goal of the invention of the present invention is to draw reality by actually measured breaking load and loading blocks sticking veneer area
The unit area breaking load P on borderiIntuitively compared, and then evaluate certain bonding agent relative to viscous between flat substrates
Connect performance.
The 3rd goal of the invention of the present invention is in certain scope, to be calculated by the verification of empirical equation, certain
In span, effective choice is carried out to actually measured breaking load, the larger breaking load of error is abandoned, so as to obtain
More efficiently breaking load, makes unit area breaking load PiCalculating it is more accurate, while also ensuring that more effective
Evaluation certain bonding agent relative to the adhesive property between flat substrates.
The technical scheme that the present invention is provided is：
A kind of bonding agent adhesive property test device for flat substrates, including：
Flat substrates；
Loading blocks, it is used to form test assembly after being adhesively fixed with the flat substrates；And
Tension test component charging assembly, it includes testing machine loading connector, test assembly connector and attachment means；
Wherein, attachment means, test assembly connector and testing machine loading connector are sequentially connected；The test assembly leads to
Cross the attachment means with the test assembly connector to be connected, the testing machine loading connector is connected with testing machine, carries out
Tension test.
Preferably, the loading blocks are that pure extension test assembly loading blocks, pure shear test component loading blocks or drawing are cut
Composite test component loading blocks；
Wherein, the pure extension test assembly loading blocks, its gluing of surfaces is vertical with axis；The pure shear test component
Loading blocks, its gluing of surfaces and diameter parallel；The angle of composite test component loading blocks, its gluing of surfaces and axis is cut in the drawing
For 0 ° of ＜ αi90 ° of ＜.
Preferably, the loading blocks be aluminum alloy material, the flat substrates be stainless steel, the loading blocks and
The bonding plane of the flat substrates carries out annular knurl processing.
Preferably, the test assembly connector is " U " type connector, and the attachment means are bearing pin.
A kind of method that bonding agent adhesive property for flat substrates is tested, it is characterised in that comprise the following steps：
Step one：Choose the different drawings of n groups and cut and compare ki(i=1,2 ... ..., n), the loading under correspondence different stress
Angle α between block gluing of surfaces and axisi, pass through αi=arctan (σi/τi)=arctan kiIt can obtain multigroup corresponding angle
αi(i=1,2 ..., n)；
Step 2；Pass through angle α between loading blocks gluing of surfaces and axisiDetermine that composite test component loading blocks are cut in drawing
Bonding plane size；
Step 3：Make the flat substrates with the loading blocks corresponding size；To loading blocks and the bonding plane of flat substrates
It is surface-treated；It is bonded the loading blocks and flat substrates formation test assembly；
Step 4：The experiment under the effect of combined stress state is cut in different drawings to test assembly；
Cut in the different drawings of n groups and compare ki(i=1,2 ..., n) in select drawing cut multigroup more parallel than being carried out in the case of identical
Experiment, records the breaking load F occurred in the tension test in the case of every kind of drawing is cut than k identical respectivelyi, calculate average fracture
Load
Step 5：The area S that the bonding plane than the corresponding test assembly is cut in every kind of drawing is calculated respectivelyi, pass through public affairs
FormulaIdentical drawing is obtained to cut than corresponding unit area breaking load Pi；Evaluate bonding agent and cut combination in different drawings
Relative to the adhesive property of the flat substrates under stress state.
Preferably, experience breaking load F is also included in the step 4i', the breaking load FiNeed to meet formulaFi'-a ＜ Fi＜ Fi′+a；Wherein, the drawing, which is cut, compares kiSpan be
0.25~4, A, B, C, D, a are constant, and e is the truth of a matter of natural logrithm, SiFor the area of bonding plane.
Preferably, the step 3, its adhering method includes：
The bonding of the loading blocks and described flat substrates one side end face, and size Control bonding is carried out by slide measure
Bondline thickness；
The test assembly, which is placed on horizontal goods of furniture for display rather than for use platform, to be solidified；When bonding agent curable adhesive layer, then complete the loading blocks
With the bonding of flat substrates another side end face, and solidify；
The satisfactory complete test assembly is obtained by the remaining glue processing of cleaning.
Preferably, in the step one, angle α between the loading blocks gluing of surfaces and axisiLess than 90 degree.
Preferably, in the step one, the drawing, which is cut, compares kiRespectively k1=2/8, k2=3/7, k3=4/6, k4=5/
5、k5=6/4, k6=7/3, k7=8/2.
Preferably, the bondline thickness between the loading blocks and flat substrates both sides end face is identical.
Beneficial effect of the present invention：
1st, the certain thickness flat substrates by being bonded in aluminium alloy loading blocks, it is ensured that test specimen was loaded in experiment
Be not in flexural deformation in journey, the load acted on bonding plane keeps invariable, can effectively test certain bonding
Agent is evaluated relative to the adhesive property between flat substrates, and to it；
2nd, cut according to different drawings and compare ki(i=1,2 ... ..., n), some groups of angles between bonding plane and axis of processing are αi
Aluminium alloy loading blocks, can testing and check different drawings, to cut bonding agent under combined stress state viscous relative to flat substrates
Performance is connect, reference frame can be provided for the bonding agent adhesive property evaluation under arbitrarily complicated operating mode；
3rd, the present invention can also carry out checking breaking load F by empirical equation within the specific limitsi, to do not meet through
Test the breaking load F of correctioniEffectively accepted or rejected, and then can more be accurately obtained the unit drawn and cut composite test component
Area breaking load, so as to can also evaluate the bonding agent adhesive property under arbitrarily complicated operating mode in certain scope；
4th, using the method for the flat substrates being bonded in aluminium alloy loading blocks, aluminium alloy loading blocks can be reused
Block, is effectively reduced experimentation cost, the difficulty of processing test specimen is reduced, while the design of flat substrates solves some materials
The problem of being difficult to be processed into large scale block test specimen, can test and evaluate bonding agent relative to adhesive property；
5th, the experimental rig and method being related in the present invention can effectively ensure that glue-line is thick in actual mechanical process in
Degree and adhesive reinforcement, in tension test test specimen charging assembly, two pairs of bearing pins in " U " type connector are in the vertical cloth of cross up and down
Put, be not only simple in structure, using reliable, can bear compared with big load, and lateral load and moment of flexure can be eliminated, it is ensured that test specimen exists
Loading procedure is only by axial force；
6th, the bonded adhesives thickness between aluminium alloy loading blocks and flat substrates is controlled using slide measure in bonding process
Degree, can avoid in traditional adhering method due to control adhesive thickness using bead and stress concentration for causing etc. other are bad
Influence.
Brief description of the drawings
Fig. 1 is shearing of thin disc experiment adherend deformation schematic diagram.
Fig. 2 is pure extension test assembly schematic diagram.
Fig. 3 is pure shear test component diagram.
Fig. 4 is to draw to cut composite test component diagram.
Fig. 5 is tension test test specimen charging assembly schematic diagram.
Fig. 6 is to draw to cut combination aluminium alloy loading blocks mormal stress σ, tangential shearing stress τ schematic diagrames.
Fig. 7 is pure extension aluminium alloy loading blocks schematic diagram.
Fig. 8 is pure shear aluminium alloy loading blocks schematic diagram.
Fig. 9 is to draw the aluminium alloy loading blocks schematic diagram for cutting combination.
Figure 10 is flat substrates schematic diagram.
Figure 11 be between gluing of surfaces and axis angle distinguish 14.04 °, 23.20 °, 33.69 °, 45.00 °, 56.30 °,
66.80 °, 75.96 ° of aluminium alloy loading blocks.
Figure 12 is that composite member bonding jig schematic diagram is cut in the drawing of pure extension machine.
Figure 13 is pure shear test specimen bonding jig schematic diagram.
Figure 14 is pure extension test specimen bonding form schematic diagram.
Figure 15 is pure shear test specimen bonding form schematic diagram.
Figure 16 is to draw to cut composite member bonding form schematic diagram.
Figure 17 is cut than the graph of relation with unit area breaking load to draw.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to specification text
Word can be implemented according to this.
As shown in Fig. 2, Fig. 3, Fig. 4, Fig. 5, by taking certain vehicle adhesive as an example, it is used for sheet base the invention provides one kind
The bonding agent adhesive property test device of material, it includes：For testing the flat substrates 200 of bonding agent adhesive property, for inciting somebody to action
The flat substrates 200 of test form test assembly 100 aluminium alloy loading blocks 101 and tension test component after being adhesively fixed add
Carry component 400；Test assembly 100 includes pure extension test assembly 110, pure shear test component 120 and drawn to cut composite test group
Part 130；Tension test component charging assembly 400 includes upper testing machine loading connector 411, lower stretching test assembly charging assembly
412nd, upper connector 421, lower connector 422 and attachment means 430；Test assembly 100 by attachment means 430 respectively with upper company
Fitting 421 and lower connector 422 are connected, and tension test component charging assembly 400 loads connector 411 by upper testing machine respectively
And lower stretching test assembly charging assembly 412 is connected with testing machine, carries out tension failure failure test；Aluminium alloy loading blocks 101
Composite test component loading blocks are cut including pure extension test assembly loading blocks 111, pure shear test component loading blocks 121 and drawing
131；Wherein, pure extension test assembly 110 is by pure extension test assembly loading blocks 111, flat substrates 200 and pure extension test group
Part loading blocks 111 are constituted, and pure extension test assembly loading blocks 111 are bonded in two ends of flat substrates 200 by bonding agent 300
Face, the gluing of surfaces of pure extension test assembly loading blocks 111 is vertical with axis；Pure shear test component 120 is by pure shear test
Component loading blocks 121, flat substrates 200 and pure extension test assembly loading blocks 121 are constituted, pure shear test component loading blocks
121 are bonded in two end faces of flat substrates 200, the gluing of surfaces of pure shear test component loading blocks 121 by bonding agent 300
With diameter parallel；Drawing cut composite test component 130 by drawing cut composite test component loading blocks 131, flat substrates 200 and draw cut group
Close test assembly loading blocks 131 to constitute, drawing cuts composite test component loading blocks 131 and is bonded in flat substrates by bonding agent 300
200 two end faces, it is 0 ° of ＜ α to draw the gluing of surfaces for cutting composite test component loading blocks 131 and the angle with axisi90 ° of ＜；
In the present embodiment, Fig. 4 have chosen a fixed angle as representative explanation.
In another embodiment, loading blocks 101 are aluminum alloy material, and the material of flat substrates 200 is stainless steel, simultaneously
Aluminium alloy loading blocks 101 and flat substrates 200 are surface-treated, intersect test specimen of polishing along 45 ° with sand paper, and to aluminium alloy
The surface of loading blocks 101 carries out annular knurl processing, improves adhesive property of the bonding agent relative to aluminium alloy loading blocks 101, it is to avoid in aluminium
There is interfacial failure in the gluing of surfaces of alloy loading blocks 101；Then according to the bonding requirements of different bonding agent, cleaning agent and work are used
The bonding plane of agent processing aluminium alloy loading blocks 101 and the surface of flat substrates 200；In being broadly divided into due to bonded joint failure mode
Poly- failure, interfacial failure, mixing failure and adherend failure, compare with the effect of single stress state, combined stress shape are cut in drawing
The possibility that failure mode median surface failure and mixing failure of the lower bonding agent of state effect relative to flat substrates 200 occur is more
Greatly, it is therefore necessary to strict surface treatment is carried out to bonding plane, prevent because the factor interference experiment result such as surface contamination.
As shown in Figure 12 and Figure 13, in another embodiment, the material of flat substrates 200 is stainless steel, is completed in bonding
After test assembly, for the remaining glue of cleaning and the easy to operate consideration of bonding, the size of processing flat substrates 200 should distinguish appropriate
Composite test component loading blocks are cut more than pure extension test assembly loading blocks 111, pure shear test component loading blocks 121 and drawing
131 bonding plane sizes, the processing thickness of flat substrates 200 takes 0.5~3mm, as a preferred embodiment, the thickness primary election of flat substrates 200
For 2mm；Also, this mode is a kind of explanation of preferred embodiments, but is not limited thereto；When implementing the present invention, sheet
Depending on the length and width of base material 200 need to be according to the specific sizes of different angle aluminium alloy loading blocks bonding planes in actual bonding, simultaneously
In order to ensure adhesive reinforcement and be bonded the simple and convenient of operating process, pure extension and drawing has been used to cut composite member bonding jig
500 and pure shear test specimen bonding jig 600.
As shown in figure 5, in another embodiment, test assembly upper connector 411 and lower connector 412 connect for " U " type
Fitting is designed, and attachment means 430 are bearing pin；Upper " U " type connector 421 and under two pairs of bearing pins 430 in " U " type connector 422
Be arranged vertically in cross, lateral load and moment of flexure can be eliminated successively, it is ensured that test specimen in tensile loads process only by axial force, from
And ensure that the accuracy of test.
A kind of bonding agent adhesive property method of testing for flat substrates, uses the described bonding for flat substrates
Agent adhesive property test device is tested, including following test procedure：
Step one：Compare k as shown in fig. 6, being cut according to different drawingsiCan obtain drawing cut combination the gluing of surfaces of loading blocks 131 with
Angle α between axisi；Combined stress state is cut according to different drawings, the different drawing of n groups is chosen and cuts and compare kn, cut with i-th group of drawing
(i=1,2 ... ..., n), it, which draws, cuts than for k exemplified by combined stressi, mormal stress is σ, and tangential shearing stress is τ, by calculating
Formula αi=arctan (σi/τi)=arctan ki(1≤i≤n), can obtain multigroup correspondence aluminium alloy loading blocks gluing of surfaces
The angle α between axisi(0 ° of ＜ αi90 ° of ＜)；Wherein, draw cut than k be defined as drawing cut combination the mormal stress σ of loading blocks 131 with
The ratio between combination loading blocks tangential shearing stress τ is cut in the drawing；
In the present embodiment,N >=2 and
For positive integer；Drawing, which is cut, compares kiK is chosen for respectively1=2/8, k2=3/7, k3=4/6, k4=5/5, k5=6/4, k6=7/3, k7=
8/2, by formula αi=arctan (σi/τi)=arctan ki(1≤i≤n) calculate obtain corresponding aluminium alloy draw cut combination plus
Carry angle α between block gluing of surfaces and axisiRespectively α1=14.04 °, α2=23.20 °, α3=33.69 °, α4=45.00 °,
α5=56.30 °, α6=66.80 °, α7=75.96 °；
Step 2：Determine pure extension test assembly loading blocks 111, pure shear test component loading blocks 121 and draw and cut group
The bonding plane size of test assembly loading blocks 131 is closed, pure extension test assembly loading blocks 111 as shown in Figure 7 is made, makes such as
Composite test component loading blocks 131 are cut in the loading blocks of pure shear test component shown in Fig. 8 121 and drawing as shown in Figure 9；Wherein, such as
Shown in Figure 11, according to α in step oneiThe numerical value of selection make different drawings cut than drawing cut composite test component loading blocks 132, drawing
Cut composite test component loading blocks 133, draw cut composite test component loading blocks 134, draw cut composite test component loading blocks 135,
Drawing cuts composite test component loading blocks 136, draws to cut composite test component loading blocks 137 and draw and cut composite test component loading blocks
138；In the present embodiment, processing and fabricating 6 is loaded to pure extension test assembly loading blocks 111,6 pairs of pure shear test components respectively
Block 121 and seven groups of every group 6 pairs different drawings are cut and cut composite test component loading blocks 132~138 than corresponding drawing；
Step 3：As shown in Figure 10, make and pure extension test assembly loading blocks 111, the pure shear test group respectively
The flat substrates 200 of the corresponding size of composite test component loading blocks 132~138 are cut in part loading blocks 121 and the drawing；
Step 4：Combination is cut to pure extension test assembly loading blocks 111, pure shear test component loading blocks 121, drawing respectively
The bonding plane of test assembly loading blocks 131 and flat substrates 200 is surface-treated；In the present embodiment, processing method includes
With sand paper along 45 ° intersect polish test specimens, and to pure extension test assembly loading blocks 111, pure shear test component loading blocks 121,
Drawing cuts the surface of composite test component loading blocks 131 and carries out annular knurl processing, improves bonding of the bonding agent relative to aluminium alloy loading blocks
Performance, it is to avoid interfacial failure occur in aluminium alloy loading blocks gluing of surfaces；Then according to the bonding requirements of different bonding agent, use
Cleaning agent and Treatment with activating agent aluminium alloy loading blocks bonding plane and the surface of flat substrates 200, due to bonded joint failure mode master
It is divided into cohesion failure, interfacial failure, mixing failure and adherend failure, is compared with the effect of single stress state, group is cut in drawing
What failure mode median surface failure and mixing failure of the lower bonding agent of combined stress state effect relative to flat substrates 200 occurred can
Energy property is bigger, it is therefore necessary to strict surface treatment is carried out to bonding plane, prevents because the factor interference experiment knot such as surface contamination
Really.
Step 5：Pure extension test assembly loading blocks 111, pure shear test component loading blocks 121 are carried out respectively, are drawn and are cut group
Close test assembly loading blocks 131 bonding with flat substrates 200, respectively obtain pure extension test assembly 110, pure shear test group
Composite test component 130 is cut in part 120 and drawing；In the present embodiment, 6 pure extension test assemblies 110, making have been made respectively
6 pure shear test components 120 and according to α in step oneiThe numerical value of selection made seven groups it is different draw cut than drawing cut combination
Test assembly 130, every group 6；
Step 6：Tried as shown in figure 5, being bonded the flat substrates being cured by tension test component charging assembly 400
Test component 100 to be connected on Compression and Expansion testing machine, tension test is carried out to flat substrates test assembly 100, for being cut in drawing
The method of testing that composite test component 130 is cut in drawing under the effect of combined stress state includes：
First, cut in the different drawings of n groups and compare ki(i=1,2 ..., n) in select drawing cut than in the case of k identical carry out m groups
Parallel test, records the breaking load F occurred in the tension test in the case of every kind of drawing is cut than k identical respectivelyi, pass through formulaObtain it is every kind of drawing cut than mean fracture loadSo
Afterwards, the area S that the bonding plane than the corresponding test assembly is cut in every kind of drawing is calculated respectivelyi, pass through formula
Every kind of drawing is obtained to cut than corresponding unit area breaking load Pi；In the present embodiment, as shown in figure 11, cut in seven groups of different draw
Compare kiIn with first group, drawing is cut than for k1Illustrate, cut in drawing than being k exemplified by=2/81In the case of=2/8, according to step
6 couple made in rapid five, which draws, cuts composite test component, carries out 6 groups of drawings and cuts than being k1=2/8 parallel test, can obtain 6
The breaking load F for the middle appearance that group passes through tension test1, breaking load F is recorded respectively1Respectively 14.65KN, 15.02KN,
14.87KN, 14.96KN, 14.85KN, 14.68KN, pass through formulaObtain
First group of drawing is cut than for k1=2/8 mean fracture loadThen first group of drawing is cut than for k1=2/8 mean fracture load isAnd first group of drawing is cut
Than for k1The area S of=2/8 bonding plane1=2576.27mm2, then first group of drawing cut than for k1=2/8 unit area fracture
Load isIn the present embodiment, seven groups of different drawings, which are cut, compares kiRespectively
k1=2/8, k2=3/7, k3=4/6, k4=5/5, k5=6/4, k6=7/3, k7=8/2 specific complete test data such as table 1
Shown in：
Different draw of 1 seven groups of table cuts the unit area breaking load than under
As shown in figure 17, cut using drawing than k as abscissa, unit area breaking load P is that ordinate sets up coordinate system, according to
It is different in table 1 to draw the drawing cut than k to cut unit area breaking load P corresponding to composite test component 130 described point in a coordinate system,
And be sequentially connected each point, obtain drawing the graph of relation cut than k and unit area breaking load P；Can by table 1 and Figure 17
Know, in the present embodiment, when drawing cut than for 6/4 when, unit area breaking load P reaches maximum.
By observing the failure mode of test specimen gluing of surfaces after stretching experiment, so as to show that combined stress state is cut in different drawings
Influence to the bond failure form of flat substrates 200, evaluates certain bonding agent phase in the case where the effect of combined stress state is cut in different drawings
For the adhesive property of flat substrates 200.
By experimental provision as described above and method, realize and test and evaluate certain bonding agent in complex stress condition
Under relative to the adhesive property of flat substrates 200 function.
In another embodiment, composite member bonding side is cut in the adhering method in step 5, in addition to pure extension and drawing
Method, pure shear test specimen adhering method；Wherein, as shown in figure 12, composite test component 130 is cut in pure extension test assembly 110 and drawing
Cut composite member bonding jig 500 by pure extension and drawing and realize；As shown in figure 13, pure shear test component 120 passes through pure shear
Test specimen bonding jig 600 is cut to realize；
Concrete implementation adhering method is as follows：
As shown in figure 12, pure extension and draw that to cut composite member adhering method step as follows：
The first step：Aluminium alloy loading blocks 101a and 101b are fixed in fixture V-type groove 531, plunger tip 520 is rotated, makes
The two tight laminating, and locked by trip bolt 513, added with vernier caliper measurement aluminium alloy loading blocks 101a and aluminium alloy
Carry block 101b entire lengths；
Second step：Piece fixture 500 is lain on levelling bench, coated in aluminium alloy loading blocks 101a gluing of surfaces
A certain amount of bonding agent, aluminium alloy loading blocks 101a is put into fixture V-type groove 531, it is ensured that left side and the left end of fixture 500
Tight between inner surface, then compresses aluminium alloy loading blocks 101a with the control metal bead 514 of trip bolt 511；
3rd step：Flat substrates 200 are aligned to aluminium alloy loading blocks 101a bonding portion, keep end face to be put down with bonding plane
OK, put down gently on bonding agent；
4th step：Aluminium alloy loading blocks 101b is put into V-type groove 531, and metal bead is controlled with trip bolt 512
514 preliminary pretensions, rotate plunger tip 520, promote aluminium alloy loading blocks 101b to be moved to aluminium alloy loading blocks 101a, enable aluminum alloy to add
Carry block 101b to fit with flat substrates 200, contrasted by the way that vernier caliper measurement is used for multiple times, and with raw footage, extruding aluminium alloy
Then bonding agent between loading blocks 101a and flat substrates 200 closes two parts aluminium up to reaching required adhesive thickness
Trip bolt locking at golden loading blocks 101a and 101b, according to the condition of cure of different bonding agent and time requirement, by test specimen
It is placed on horizontal goods of furniture for display rather than for use platform and solidifies, until bonding agent glue-line 310 solidifies；
5th step：When glue-line 310 is cured to certain intensity, removes aluminium alloy loading blocks and cleaning aluminium is closed again
Golden loading blocks 101b gluing of surfaces and flat substrates 200 is not bonded end face；
6th step：A certain amount of bonding agent is applied on aluminium alloy loading blocks 101b gluing of surfaces, V-type groove is placed it in
In 531, aluminium alloy loading blocks 101b and the left side of fixture 500 alignment after, pass through trip bolt compress 511 fix；
7th step：The aluminium alloy loading blocks 101a bonded together and flat substrates 200 are placed on V-type groove 531, are used in combination
Trip bolt 512 controls the preliminary pretension of metal bead 514, rotates plunger tip 520, promotes aluminium alloy loading blocks 101a and flat substrates
200 move to aluminium alloy loading blocks 101b together, by slide measure carry out size Control, until aluminium alloy loading blocks 101b and
Bonding agent between flat substrates 200 reaches to be compressed aluminium and closes with the thickness of other end identical glue-line 310, locking trip bolt 513
Golden loading blocks 101a and 101b, and solidify；
8th step：The processing such as remaining glue are purged to the test specimen being cured, complete flat substrates bonding test specimen group is obtained
Part.
As shown in figure 13, pure shear test specimen adhering method step is as follows：
The first step：Fixture 600 is placed on levelling bench, coated in aluminium alloy loading blocks 101a bonding site a certain amount of
Bonding agent, lie in U-shaped piece 622 of activity, and clamped by lateral trip bolt 612, the level of flat substrates 200 is put down gently
On bonding agent, and on flat substrates 200 place suitable thickness auxiliary spacer, with ensure be bonded bondline thickness.
Second step：It is downward by fastening screw 611 with aluminium alloy loading blocks 101b bonding site to auxiliary spacer position
Pressing plate 630 is extruded, while controlling the lap width of glue-line 320, and aluminium alloy loading blocks 101a and aluminium alloy loading blocks is ensured
101b aligns, and keeps test specimen adhering state until bonding agent solidifies；, will according to the condition of cure of different bonding agent and time requirement
Test specimen, which is placed on horizontal goods of furniture for display rather than for use platform, to be solidified, until bonding agent glue-line 320 solidifies.
3rd step：When glue-line 320 is cured to certain intensity, removes test specimen and clear up aluminium alloy loading blocks again
101b gluing of surfaces and flat substrates 200 are not bonded end face.
4th step：A certain amount of bonding agent is coated in aluminium alloy loading blocks 101b bonding site, fixture 600 is lain in
In U-shaped piece 622 of activity, and clamped by lateral trip bolt 612, by flat substrates 200 and aluminium alloy loading block alignment bonding
Position, is put down gently on bonding agent, and pressing plate 630 is pressed down against by fastening screw 611, reaches the thickness of glue-line 320 of requirement, Gu
Change.
5th step：The processing such as remaining glue are purged to the test specimen being cured, complete flat substrates bonding test specimen group is obtained
Part.
It is as shown in figure 14 the pure extension test assembly 110 being cured, is the pure shear test being cured as shown in figure 15
Component 120, cuts composite test component 130 for the drawing that is cured as shown in figure 16, by the pure extension test assembly 110 being cured,
Pure shear test component 120 and drawing cut composite test component 130 and pass through tension test component charging assembly 400 as shown in Figure 5
It is fixed on Compression and Expansion testing machine, carries out tension failure experiment, upper " U " the type connection of tension test component charging assembly 400
Part 421 and under two pairs of bearing pins 430 in " U " type connector 422 be arranged vertically in cross, lateral load and moment of flexure can be eliminated,
Ensure test specimen in loading procedure only by axial force.
In another embodiment, experience breaking load F is also included in the step 6i', cut combination choosing any drawing
After test assembly, actually measured breaking load FiNeed to meet empirical equation
Fi'-a ＜ Fi＜ Fi′+a；Wherein, draw to cut and compare kiSpan meet the calculating requirement of the empirical equation at 0.25~4,
While the area S of the bonding plane of test assemblyiPass through formulaCalculate, b is that combination is cut in actually measured drawing
The width of loading blocks 131, unit is mm, and h is the thickness that combination loading blocks 131 are cut in actually measured drawing, and unit is mm, then is passed through
Formula αi=arctan (σi/τi)=arctan kiIt can obtain multigroup corresponding angle αi(i=1,2 ... ..., n), A, B, C, D, a
For constant, e is the truth of a matter of natural logrithm, and angle α between the gluing of surfaces of composite test component loading blocks 131 and axis is cut in drawingiIt is full
Sufficient conditionN >=2 and for positive integer；Carrying out
Choose every group it is different draw cut than drawing cut composite test component practical measurement breaking load FiDuring numerical value, pass through contrast number FiIt is
It is no to meet Fi'-a ＜ Fi＜ Fi'+a intervals are required, and then composite test component practical measurement breaking load F is cut to every group of drawingiEnter
Row is effective to be accepted or rejected, and is abandoned not in Fi'-a ＜ Fi＜ FiPractical measurement breaking load F in '+a interval rangesiNumerical value, to fracture
Load FiF is not meti'-a ＜ Fi＜ FiThe drawing that '+a intervals are required is cut composite test component and redeterminated, and obtains significant figure
Effective unit area breaking load P calculating is carried out after value again, if the breaking load F of continuous three measureiF is not meti′-
A ＜ Fi＜ Fi'+a intervals are required, then cut composite test component to the drawing and remake, then are tested, until drawing symbol
Close Fi'-a ＜ Fi＜ FiThe breaking load F of composite test component is cut in the drawing that '+a intervals are requiredi；In the present embodiment, A=
0.0223, B=7.0683, C=-0.416, D=0.0006, a=0.223.
In another embodiment, such as Figure 14, Figure 15, Figure 16, pure extension test assembly loading blocks 111 and flat substrates
The thickness of bonding glue-line 340 between 200 both sides end faces is identical, pure shear test component loading blocks 121 and the both sides of flat substrates 200
The thickness of bonding glue-line 350 between end face is identical and composite test component loading blocks 131 and the both sides end face of flat substrates 200 are cut in drawing
Between the thickness of bonding glue-line 360 it is identical, as a preferred embodiment, during the starting stage is tested, choose bonded adhesives
Layer 340, bonding glue-line 350 and the bonding thickness of glue-line 360 are 1mm.
Although embodiment of the present invention is disclosed as above, it is not restricted in specification and embodiment listed
With it can be applied to various suitable the field of the invention completely, can be easily for those skilled in the art
Other modification is realized, therefore under the universal limited without departing substantially from claim and equivalency range, the present invention is not limited
In specific details and shown here as the legend with description.
Claims (6)
1. a kind of method that bonding agent adhesive property for flat substrates is tested, it is characterised in that comprise the following steps：
Step one：Choose the different drawings of n groups and cut and compare ki(i=1,2 ... ..., n), loading blocks gluing of surfaces under correspondence different stress
The angle α between axisi, pass through αi=arctan (σi/τi)=arctan kiIt can obtain multigroup corresponding angle αi(i=1,
2,……,n)；
Step 2；Pass through angle α between loading blocks gluing of surfaces and axisiDetermine that the viscous of composite test component loading blocks is cut in drawing
Junction size；
Step 3：Make the flat substrates with the loading blocks corresponding size；The bonding plane of loading blocks and flat substrates is carried out
Surface treatment；It is bonded the loading blocks and flat substrates formation test assembly；
Step 4：The experiment under the effect of combined stress state is cut in different drawings to test assembly；
Cut in the different drawings of n groups and compare ki(i=1,2 ... ..., n) in select drawing cut than carrying out multigroup parallel test in the case of identical,
The breaking load F occurred in the tension test in the case of every kind of drawing is cut than k identical is recorded respectivelyi, calculate mean fracture load
Step 5：The area S that the bonding plane than the corresponding test assembly is cut in every kind of drawing is calculated respectivelyi, pass through formulaIdentical drawing is obtained to cut than corresponding unit area breaking load Pi；Evaluate bonding agent it is different drawing cut combination should
Relative to the adhesive property of the flat substrates under power state.
2. the method tested as claimed in claim 1 for the bonding agent adhesive property of flat substrates, it is characterised in that described
Also include experience breaking load F in step 4i', the breaking load FiNeed to meet formulaFi'-a ＜ Fi＜ Fi′+a；Wherein, the drawing, which is cut, compares kiSpan be
0.25~4, A, B, C, D, a are constant, and e is the truth of a matter of natural logrithm, SiFor the area of bonding plane.
3. the method tested as claimed in claim 1 or 2 for the bonding agent adhesive property of flat substrates, it is characterised in that
The step 3, its adhering method includes：
The bonding of the loading blocks and described flat substrates one side end face, and size Control bonding glue-line is carried out by slide measure
Thickness；
The test assembly, which is placed on horizontal goods of furniture for display rather than for use platform, to be solidified；When bonding agent curable adhesive layer, then complete the loading blocks and institute
The bonding of flat substrates another side end face is stated, and is solidified；
The satisfactory complete test assembly is obtained by the remaining glue processing of cleaning.
4. the method tested as claimed in claim 3 for the bonding agent adhesive property of flat substrates, it is characterised in that described
In step one, angle α between the loading blocks gluing of surfaces and axisiLess than 90 degree.
5. the method tested as claimed in claim 4 for the bonding agent adhesive property of flat substrates, it is characterised in that described
In step one, the drawing, which is cut, compares kiRespectively k1=2/8, k2=3/7, k3=4/6, k4=5/5, k5=6/4, k6=7/3, k7=
8/2。
6. the method that the bonding agent adhesive property for flat substrates as any one of claim 1,2,4 or 5 is tested,
Characterized in that, the bondline thickness between the loading blocks and flat substrates both sides end face is identical.
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| CN105466762A (en) * | 2015-12-17 | 2016-04-06 | 中国电力科学研究院 | Aluminum sheet substrate for coating shearing strength test and test sample thereof |
| CN105606465B (en) * | 2016-03-07 | 2017-02-08 | 吉林大学 | Adhesive peeling test device and method considering shear load influence |
| CN109253933A (en) * | 2018-11-02 | 2019-01-22 | 吉林大学 | Test specimen apparatus for impact testing and test method are bonded in a kind of full service temperature section |
| CN109975206A (en) * | 2019-04-16 | 2019-07-05 | 华北水利水电大学 | Vehicle bonded structure strength check methods under a kind of environment of total temperature field |
| CN110031398A (en) * | 2019-04-19 | 2019-07-19 | 华北水利水电大学 | A kind of composite material car body bonded structure and strength design |
| JP7437883B2 (en) * | 2019-05-31 | 2024-02-26 | ミネベアミツミ株式会社 | Information processing equipment, applications and systems for tensile compression testing machines |
| CN110470523B (en) * | 2019-09-20 | 2021-01-29 | 北京理工大学 | Glue joint sample manufacturing device and method |
| CN112098192A (en) * | 2020-10-21 | 2020-12-18 | 中国建材检验认证集团股份有限公司 | Clamp and method for testing tensile shear creep of adhesive by cross method |
| CN112945677A (en) * | 2021-03-31 | 2021-06-11 | 华北水利水电大学 | Composite material single-lap-joint test piece positioning fixture capable of controlling bonding thickness |
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| CN201464348U (en) * | 2009-05-22 | 2010-05-12 | 昆明理工大学 | Adhesive force testing device for casting binder of molding sand |
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