CN205538475U - Soft mechanical properties of materials measuring device - Google Patents
Soft mechanical properties of materials measuring device Download PDFInfo
- Publication number
- CN205538475U CN205538475U CN201620299523.5U CN201620299523U CN205538475U CN 205538475 U CN205538475 U CN 205538475U CN 201620299523 U CN201620299523 U CN 201620299523U CN 205538475 U CN205538475 U CN 205538475U
- Authority
- CN
- China
- Prior art keywords
- soft material
- voice coil
- coil motor
- measuring device
- mechanical property
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a soft mechanical properties of materials measuring device, this measuring device include voice coil motor, translation platform and CCD camera, wherein: voice coil motor installs on the rack, and linear motion is along the rack to its main shaft to the softwood material carries out the load to awaiting measuring, the translation platform is located has placed on it voice coil motor's below the softwood that awaits measuring material, one side of the softwood material that awaits measuring is located to the CCD camera for shoot softwood material loading fore -and -after deformation pattern like. The utility model discloses compact structure, it is multiple functional, have advantages such as measurement accuracy height, measuring range guangZhou.
Description
Technical field
This utility model belongs to soft material Mechanics Performance Testing field, more particularly, to a kind of soft material
Material mechanical property measuring device.
Background technology
Soft material is the material that the class between solid and perfect fluid is special, is usually by dividing greatly
Son or molecular cluster composition, it has flexibility and two distinguishing features of complexity.Soft material mainly wraps
Including rubber, biological tissue and liquid crystal, it contacts closely with our daily life, with general
Engineering material is compared, and soft material has unique good characteristic, as rubber have corrosion-resistant,
The advantages such as pliable and tough, wear-resisting, adiabatic insulation, in Aero-Space, biomaterial, industrial engineering and medical science
In field, there is extensive application background.Therefore, the test to soft material is extremely important, knows soft material
Performance after, just can sit in the right seat and make its performance using value that puts into production.
The mechanical property of soft material is complex, and small effect the most to external world is very sensitive, to soft
Material applies relatively side crops industry just can produce moderate finite deformation, and the most weak impact causes strong change, and soft material
Deformation response there is nonlinear feature, including geometrical non-linearity and physical nonlinearity, it addition, soft
Material Contact Boundary in contact problems is also nonlinear, so the test of soft material mechanical property
Extremely complex.
In prior art, the Mechanics Performance Testing for soft material has had some research approaches, such as CN
201210319723.9 Multipurpose in-situ micro-scale mechanics performance test methods under disclosed scanning electron microscope,
It uses voice coil motor to avoid the produced vibration of step motor drive mode, can carry out original position stretching,
Compression, bending and fatigue mechanics performance test.But the data that the method obtains power need an additional power
Sensor, and fatigue crack situation need to be obtained by scanning electron microscope, it is simultaneous for the sample of different length
Need to design slide block and chute, structure is complicated, operation inconvenience.
Utility model content
For disadvantages described above or the Improvement requirement of prior art, this utility model provides a kind of soft material
Mechanical property measuring device, it realizes loading the collection with data by voice coil motor, passes through voice coil loudspeaker voice coil
The main shaft contact laboratory sample of motor, applies certain load to sample, obtains displacement and load data,
And combine digital picture measurement further to soft material work, obtain material more fully mechanical property parameters,
There is certainty of measurement high, measure the advantages such as scope is wide, it is adaptable to the multiple mechanical property of multiple soft material
Measurement.
For achieving the above object, the utility model proposes. a kind of soft material mechanical property measuring device,
This measurement apparatus includes voice coil motor, translation stage and ccd video camera, wherein:
Described voice coil motor is arranged on stand, and its main shaft moves along a straight line along stand, with to be measured soft
Material loads；
Described translation stage is positioned at the lower section of described voice coil motor, and it is placed with described soft material to be measured；
Described ccd video camera is located at the side of soft material to be measured, for shooting the deformation before and after soft material loads
Image.
As it is further preferred that described voice coil motor is internally provided with grating scale and force transducer, institute
Stating grating scale for obtaining the main shaft displacement of voice coil motor, described force transducer is used for obtaining load data.
As it is further preferred that described stand includes base and the vertical plate being vertically mounted on base.
As it is further preferred that be provided with reinforcement between described base and vertical plate.
As it is further preferred that described voice coil motor is arranged on vertical plate by fillister head screw.
As it is further preferred that described voice coil motor enters between power, speed and position Three models
Row conversion.
In general, by the contemplated above technical scheme of this utility model compared with prior art,
Mainly possess following technological merit:
The main shaft of voice coil motor the most of the present utility model does directly along vertical direction under the driving of controller
Line moves, and utilizes voice coil motor soft landing functional realiey to contact with the low force of soft material sample, has survey
Accuracy of measurement is high, measures the advantages such as scope is wide, it is adaptable to the measurement of the multiple mechanical property of multiple soft material.
Voice coil motor the most of the present utility model can carry out position, strength, speed and acceleration accurately
Control, it is directly driven by controller, has the highest accuracy and repeatability, may be implemented in
Freely change between power, speed and position Three models.
3. this utility model measures the deformation data of soft material under small strain by ccd video camera, and
Combine with the load-displacement data of voice coil motor feedback, material can be obtained fast and accurately more fully
Mechanical property parameters, can realize soft material elastic modelling quantity, mechanical property hysteresis loop, fatigue behaviour etc. many
Plant the measurement of mechanical property.
Accompanying drawing explanation
Fig. 1 is the integral layout figure of the soft material mechanical property measuring device of this utility model embodiment；
Fig. 2 (a) and (b) are the vertical of the soft material mechanical property measuring device of this utility model embodiment
Body figure.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with
Drawings and Examples, are further elaborated to this utility model.Should be appreciated that this place is retouched
The specific embodiment stated, only in order to explain this utility model, is not used to limit this utility model.This
Outward, if technical characteristic involved in each embodiment of this utility model disclosed below that
The conflict of not constituting between this just can be mutually combined.
As it is shown in figure 1, a kind of soft material mechanical property measuring device that this utility model embodiment provides,
It mainly includes voice coil motor 1, stand 5, translation stage 4 and ccd video camera 8, this utility model master
Voice coil motor to be utilized is as executor, Real-time Feedback soft material tension and compression while voice coil motor moves
Displacement-load data in deformation process, and combine the deformation data of deformation pattern, it is achieved soft material
The test of multiple mechanical property parameters.Concrete, the overall dimensions of this utility model measurement apparatus is
243mm×260mm×360mm。
Separately below all parts in measurement apparatus is described in detail.
Voice coil motor 1, it is installed on stand 5 as the executor of this measurement apparatus, and is positioned at and treats
Surveying the top of soft material, it can do along stand and move along a straight line up and down, along with its motion is to soft material to be measured
Load, positional information and its load information loaded of its main shaft while motion, can be obtained.
Concrete, positional information is obtained by the grating scale being located within voice coil motor, and load information is by being positioned at sound
The force transducer of circle motor internal obtains.
Voice coil motor 1 can be moved along a straight line by the control realization of controller 2, and by changing its main shaft
The size of displacement is to change the load being applied to above soft material.Concrete, executor's voice coil motor 1
Can change between power, speed and position Three models, i.e. send force mode to controller 2 and refer to
Order, the power with a certain size is travelled forward by executor's main shaft；Refer to controller 2 transmission speed pattern
Order, the speed with a certain size is travelled forward by executor's main shaft；Mode position is sent to controller 2
Instruction, executor's main shaft will be moved to relative position or absolute position.
For realizing the acquisition of various data, this utility model is additionally provided with computer 6 (PC), controller
2 one end connect executor's (voice coil motor), and the other end connects computer, and control instruction is sent by PC end
On controller 2, to control the motion of voice coil motor.When soft material is measured, according to sound
Circle grating scale within motor 1 and force transducer obtain displacement and the load data of main shaft, this position respectively
Move and load data is directly gathered by controller, and by controller, the data gathered are sent to meter
In calculation machine, computer is analyzed and processes according to the data gathered, to obtain the load of soft material to be measured
Lotus-displacement relation f:
S=f (F)；
Wherein, S is the main shaft displacement relative to workpiece origin, and F is the power of main shaft feedback.
Further, workpiece origin (i.e. programming zero) determines in the following way: make voice coil motor 1
Main shaft at full speed, the mode of low strength close to the surface of soft material 7 to be measured, the most persistently monitor
The following error of site error, i.e. main shaft, following error is requirement position and the actual bit of motion of main shaft
The difference put, until following error reaches set site error, such as 50 μm, then makes main shaft
Position keep constant, set this point as workpiece origin, perform the function after soft landing.Wherein,
At high speed, to refer specifically to speed be 8000 μm/s to low strength, and strength is the gentle contact power less than 10 g.
More specifically, controller 2 is connected with power transfer module 3, this power transfer module 3 He
Computer 6 is powered by same power supply 9, specifically can be powered by 220V alternating current power supply, controller 2 and electricity
Source modular converter 3 is installed on the same side of stand 5.Controller 2 and the installation of power transfer module 3
Only need to play fixation, it is not necessary to machining accuracy and cooperation requirement, only need its installation site of reasonable layout
Ensure compactedness and the integrity of outward appearance of structure.
Stand 5 is fixed for the installation realizing miscellaneous part, and for ensureing the stability measured, its
Including base 51 and the vertical plate 52 being vertically mounted on base 51, controller 2 and Power convert mould
Block 3 is located at the side of vertical plate 52, voice coil motor 1 and translation stage 4 and is located at another of vertical plate 52
Side.For the ease of measurement apparatus placement, take and measure time stability, need to ensure base 51 with
Laboratory table has bigger contact area, and contact area needs polish, and the bottom surface 51 of base selects
The groove opening a wide 143mm can reduce polish area.
Owing to voice coil motor moves along major axes orientation, therefore it is arranged on the vertical plate of stand,
Main shaft is arranged along vertical direction, is arranged on vertical plate by such as fillister head screw, due to voice coil loudspeaker voice coil
Motor 1 is arranged on vertical plate, and voice coil motor 1 is the main of soft material Mechanics Performance Testing device
Parts, its installation accuracy directly affects the experimental precision of whole device, therefore, in the peace of vertical plate
Polish on dress face.
For the ease of fixed installation, the base of stand is provided with four counter sinks, by mounting foot spiral shell
Bolt fixes test device of the present utility model, and bolt head bottom surface need to be assembled with counter sink surface, therefore
Counter sink surface is matching surface, needs polish.In order to improve the stability of vertical plate, at base
And have reinforcement 53 by welding procedure connection between vertical plate.
Translation stage 4 is used for placing and move horizontally test soft material, and it is arranged on voice coil motor 1 time
Side, is fixed on the base of test device stand 5 by mounting foot bolt, and its installation accuracy is direct
Affecting the experimental precision of whole device, for ensureing the accuracy of test, installed surface to ensure certain adding
Work precision.
The side of soft material to be measured is provided with ccd video camera 8, and this ccd video camera 8 is used for shooting soft
Deformation pattern before and after material pressurization, and by deformation pattern transmission to computer 6.Concrete, profit
The digital picture on testee surface before and after deforming with video camera shooting, i.e. with CCD as photoelectric sensing
Deflection in device monitoring materials in tension and compression deformation process, the method is not only measured than conventional extensometer
Method is more objective, moreover it is possible to measure soft material whole deformation process, digital picture before and after finally deforming in real time
Carry out coupling and obtain the deformation data of measured object, the width-telescopic amount etc. of such as material.
Whole measurement apparatus of the present utility model is controlled by the upper computer software in computer 6, bag
Include the motion of voice coil motor 1 main shaft, the pattern of the stress deformation curve of generation and the collection of experimental data
With post processing etc..Translation stage 4 is manually controllable, it is possible to be designed as motor control.
The side that use of the present utility model measurement apparatus carry out mechanical property measurement is specifically described below
Method, itself particularly as follows:
The main shaft of voice coil motor 1 moves along a straight line along vertical direction, and voice coil motor moves downward and treats
Survey the contact of soft material 7 low force；When the surface of main shaft with soft material 7 to be measured just contacts, it is set to
Workpiece origin, main shaft continues motion afterwards, and soft material produces deformation under the load effect of main shaft；Sound
Circle grid chi within motor 1 and force transducer gather displacement and the load data of main shaft respectively, and by position
Moving and load data transmits to computer 6, the ccd video camera 8 of soft material 7 side to be measured shoots soft
Deformation pattern before and after material pressurization, and by deformation pattern transmission to computer 6, to obtain soft material
The deformation data of material；By displacement and load data the deformation data combining deformation pattern, quantitative scoring
Calculate the mechanical property parameters of soft material.
Below as a example by soft material elastic modelling quantity, mechanical property hysteresis loop and fatigue test, retouch further
State test process of the present utility model.
1) elasticity modulus test
Elastic modelling quantity computing formula is as follows:
Wherein, P is imposed load, and Δ L is the deflection of soft material, and Δ A is the horizontal stroke during soft material is measured
Sectional area, L0Overall length for soft material.
In test process, the cross-sectional area of soft material is being constantly occurring change, by aforementioned digital phase
After the method measurement deformation of pass, the profile of material is in the hope of cross-sectional area Δ A.By the built-in grating of voice coil motor
Chi records the deflection Δ L of soft material, can be obtained the applying of material by the force transducer that voice coil motor is built-in
Load p, is fed back in computer to draw the elastic modelling quantity performance of soft material under different distortion.
2) mechanical property hysteresis loop test
Measurement apparatus of the present utility model can carry out material mechanical performance hysteresis loop test, should by drawing
Stress-strain curve i.e. can get the mechanical property hysteresis loop of soft material.Material is under cyclic loading, and it should
Stress-strain response is very different with dull loading, and overall strain width includes playing strain amplitude and plastic strain
Width:
Δ ε=Δ εe+Δεp；
Wherein, Δ ε is overall strain width, Δ εeFor playing strain amplitude, Δ εpFor plastic strain width.Complete
Load-deformation curve corresponding to load cycle surrounds a loop line closed, and claims hysteresis loop or delayed
Ring.Experimentation is obtained by the stress and strain value during monitoring soft material loading and unloading
The hysteretic properties of soft material.
3) fatigue test
Measurement apparatus of the present utility model can carry out the fatigue test of soft material, by computer to control
Device 2 sends control instruction, makes executor's voice coil motor apply alternate load to soft material, obtains test
Material intensity under alternate load, is fatigue strength.
Wherein, R is stress ratio, σminFor minimum load, σmaxFor maximum load, by computer
Software records R=-1 time material cycle-index when being damaged and imposed load size, draw out table
Show the S-N curve of relation between applied stress level and standard specimen fatigue life, i.e. can get soft material
The fatigue behaviour of material.
As it will be easily appreciated by one skilled in the art that and the foregoing is only preferred embodiment of the present utility model
, not in order to limit this utility model, all made within spirit of the present utility model and principle
Any amendment, equivalent and improvement etc., within should be included in protection domain of the present utility model.
Claims (6)
1. a soft material mechanical property measuring device, it is characterised in that this measurement apparatus includes voice coil loudspeaker voice coil
Motor (1), translation stage (4) and ccd video camera (8), wherein:
Described voice coil motor (1) is arranged on stand (5), and its main shaft does straight line fortune along stand (5)
It is dynamic, so that soft material to be measured (7) is loaded；
Described translation stage (4) is positioned at the lower section of described voice coil motor (1), it is placed with described in treat
Survey soft material (7)；Described ccd video camera (8) is located at the side of soft material to be measured (7), is used for
Deformation pattern before and after shooting soft material loading.
2. soft material mechanical property measuring device as claimed in claim 1, it is characterised in that described sound
Circle motor internal is provided with grating scale and force transducer, and described grating scale is for obtaining the master of voice coil motor
Axial displacement, described force transducer is used for obtaining load data.
3. soft material mechanical property measuring device as claimed in claim 2, it is characterised in that described
Stand (5) includes base (51) and the vertical plate (52) being vertically mounted on base (51).
4. soft material mechanical property measuring device as claimed in claim 3, it is characterised in that described
Reinforcement (53) it is provided with between base (51) and vertical plate (52).
5. soft material mechanical property measuring device as claimed in claim 4, it is characterised in that described
Voice coil motor (1) is arranged on vertical plate by fillister head screw.
6. soft material mechanical property measuring device as claimed in claim 5, it is characterised in that described
Voice coil motor (1) is changed between power, speed and position Three models.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620299523.5U CN205538475U (en) | 2016-04-12 | 2016-04-12 | Soft mechanical properties of materials measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620299523.5U CN205538475U (en) | 2016-04-12 | 2016-04-12 | Soft mechanical properties of materials measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205538475U true CN205538475U (en) | 2016-08-31 |
Family
ID=56791251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620299523.5U Expired - Fee Related CN205538475U (en) | 2016-04-12 | 2016-04-12 | Soft mechanical properties of materials measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205538475U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106680084A (en) * | 2016-12-28 | 2017-05-17 | 华中科技大学 | Anti-tensile and anti-flexing performance test system for flexible electronics |
-
2016
- 2016-04-12 CN CN201620299523.5U patent/CN205538475U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106680084A (en) * | 2016-12-28 | 2017-05-17 | 华中科技大学 | Anti-tensile and anti-flexing performance test system for flexible electronics |
| CN106680084B (en) * | 2016-12-28 | 2019-01-18 | 华中科技大学 | A kind of flexible electronic stretch-proof and warp resistance Performance Test System |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105865915A (en) | Soft material mechanical performance measurement apparatus and method thereof | |
| CN201837561U (en) | Indentation device determining load-displacement curve of material | |
| CN104931366B (en) | A kind of the fretting fatigue testing method and its testing machine of contact load real-time, tunable | |
| CN206920243U (en) | A kind of uniaxial compression test device | |
| CN105181436B (en) | Bending preloads micro-nano impression mechanic property test method and device | |
| CN101441154B (en) | High precision microscopic fatigue tester | |
| CN102374953A (en) | Indentation device for testing load-displacement curve of material | |
| CN107607409A (en) | The biaxial stretch-formed compression verification device of superhigh temperature complex load | |
| CN107607398A (en) | A kind of measuring method of residual stress to bolt fastening structure clamping force influence of fading | |
| CN105527175A (en) | Soil engineering triaxial shear test equipment based on MTS electro-hydraulic servo tester | |
| CN107340087A (en) | Simulation measuring device for high-stress contact lubricating oil film friction force | |
| CN105158057A (en) | Apparatus and method for testing in-situ triaxial tension fatigue under multi-field coupling | |
| CN107607400A (en) | Rubber type of material biaxial tension-compression strength machine | |
| CN104344987B (en) | Pulling, bending and twisting material loading testing machine | |
| Calandra et al. | A versatile mechanized setup for controlled experiments in archeology | |
| CN107941613A (en) | Biological respinse and soft tissue mechanics multifunctional testing integrated instrument | |
| CN110501125A (en) | A kind of flexible support torsion stiffness parameter Simplified Test Equipment and test method | |
| CN205538475U (en) | Soft mechanical properties of materials measuring device | |
| CN203643278U (en) | Device for testing microscopic mechanical property of four-point bending material in situ under microscope | |
| CN206095903U (en) | Finger friction test equipment | |
| Scorza et al. | A review on methods and devices for force platforms calibration in medical applications. | |
| CN208026569U (en) | Electromagnetic type experimental provision for the test of biomaterial impact mechanical performance | |
| CN205691418U (en) | The relaxation device when compression of thin stephanoporate elastomeric material is long | |
| CN104897398B (en) | Scalable gear fatigue testbed and stress cycle number calculation method thereof | |
| CN106124323A (en) | A kind of cupping machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20190412 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |