CN206270163U - Shape memory alloy material function fatigue property test system based on electro thermal coupling - Google Patents
Shape memory alloy material function fatigue property test system based on electro thermal coupling Download PDFInfo
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- CN206270163U CN206270163U CN201621296018.1U CN201621296018U CN206270163U CN 206270163 U CN206270163 U CN 206270163U CN 201621296018 U CN201621296018 U CN 201621296018U CN 206270163 U CN206270163 U CN 206270163U
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- shape memory
- memory alloy
- alloy material
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Abstract
The utility model discloses the shape memory alloy material function fatigue property test system based on electro thermal coupling；The test system includes electric power system, camera chain, temperature acquisition system and control system.Camera chain includes the shot box with viewfinder, lighting source, industrial camera and camera foot stool；Temperature acquisition system includes temperature thermocouple and temperature acquisition card；Control system includes the time relay and computer.Current load is carried out to shape memory alloy material with power supply；With the monitored sample of time relay independent control and the conduction time of cooling fan.The utility model test system can realize the monitoring of the displacement and temperature to involved shape memory alloy material under electric current and Joule heat coupling, the displacement of one or several mark points and temperature data on monitored sample are obtained simultaneously, it is adaptable to characterize shape memory alloy material function fatigue behaviour in electro thermal coupling off field.
Description
Technical field
The utility model is related to the precision actuation field of the Mechanics Performance Testing of functional material and intellectual material, and in particular to
A kind of function fatigue behaviour of shape memory alloy material under electric current and Joule heat coupling, service reliability, micro- group
Knit the test system of evolutionary process evaluation.
Background technology
Shape memory alloy material under conditions of the intervention of no external force after appropriate " training " by that can heat up
The reversible macroscopic deformation accompanied with phase transition process with generation in temperature-fall period, so as to be widely used in boat as intellectual material
The every field such as empty space flight, mechanical engineering, biomedicine.This reversible macroscopic deformation of shape memory alloy material comes from material
Internal stress field, this internal stress field can by " training " process in which materials inside produce dislocation trigger, also can be by " training " process
The tiny precipitated phase with specific orientation that middle material internal is produced causes.However, thermogenetic by joule when electric current passes through
Temperature field long term will be produced gradually as dislocation multiplication, precipitated phase are long when shape memory alloy material in material internal
The microscopic structure change such as big, shows as the drift of phase transition temperature or the decline of shape memory response rate, i.e. marmem material
The function fatigue behaviour of material.This allows for understanding and grasping shape memory alloy material in various physical fields (including electric field, temperature
Field, stress field, remaining external carbuncle field, internal stress field etc.) in long-acting process by phase transformation generation deformation Variation Features
Turn into rule and characterize shape memory alloy material function fatigue behaviour and the emphasis of forecast function fatigue life.
At present, the component major part being made up of shape memory alloy material is work during alternating temperature caused by heat transfer
Make, but need be powered if the component (such as shape memory artificial anal sphincter) used under specific condition for some
Worked in journey.Simultaneously, although there is part to be produced to its phase transformation and deformation behavior when passing through shape memory alloy material on electric current
The research of influence, but fresh be related to electric current less phase transformation and deformation on shape memory alloy material long-term influence.Especially needed finger
Go out, influence of the electric current to material is many, including electromigration, electroluminescent moulding and electroluminescent Joule heat etc., no matter which side
Face can all produce the influence of varying degree so as to change the phase transformation and deformation of material to the microscopic structure of shape memory alloy material
Behavior.During long-term use, the summation of electric current and Joule heat coupling to shape memory alloy material can more make
Generation be different from the fatigue behaviour of heat transfer load mode, show as Shape Memory Alloy member operating temperature is interval and work
Make displacement to be changed during long-term use.It is tired that this allows for shape memory alloy material function under electric-thermal coupled field
The quality of labor performance turns into the intelligent construction material of selection, estimates material (or component) life-span and analysis of material (or component) failure side
The important indicator of formula.Therefore, long-term in the case where being powered to Shape Memory Alloy member, stabilization, its work is synchronously recorded
Displacement and temperature change turn into the important step for characterizing and evaluating its function fatigue behaviour.
However, used as a kind of atypical mechanical test method, in practical study and test job, there is no to be carried out
For a long time, the experimental technique and test system of the function such as real-time monitoring, system log data.Therefore a kind of new experiment of design is needed
Method and test system characterize the function fatigue behaviour of shape memory alloy material, the system should comprising displacement acquisition device,
Temperature collecting device and it is electrified for a long time required control system.Common displacement transducer (including contact and non-connects at present
Touch displacement transducer) change in displacement for point on monitored sample can only be obtained mostly, such as need to simultaneously measure same sample
The displacement data of upper multiple points is, it is necessary to set multiple displacement transducers.This can not only greatly increase cost of manufacture, and be unfavorable for
The stability of system longtime running.In recent years, imaging method due to it is directly perceived, comprehensive, stabilization the characteristics of, more and more used
In the size and change in displacement of the monitored sample of sign, and multiple displacement datas put on sample can be simultaneously measured, be especially suitable for
For solving technical problem of the present utility model.
In sum, design is a kind of steadily in the long term, be easy to operation, can monitor shape using imaging system real-time synchronization remembers
The test system for recalling displacement and temperature change of the alloy material under electric current and Joule heat coupling is this area urgent at present
The technical issues that need to address, so as to reach research marmem function fatigue behaviour, Indirect evaluation microstructure evolution
Process and the purpose of forecast function fatigue life.
Utility model content
The utility model aims to overcome that the problem that prior art is present, there is provided a kind of to open up intuitively, comprehensively, in real time
Show and monitor the shape memory alloy material function fatigue property test system based on electric-thermal coupled field of shape memory alloy material
System.
To achieve the above object, the utility model uses following technical scheme：
Shape memory alloy material function fatigue property test system based on electric-thermal coupled field：Including electric power system, take the photograph
Shadow system, temperature acquisition system, control system and monitor station；Electric power system is mainly power supply；Camera chain takes including band
The shot box of scape window, lighting source and industrial camera；Temperature acquisition system includes temperature thermocouple and temperature acquisition card；Control
System includes the time relay and computer；Monitor station includes sample stage and metal column；
Sample stage is provided with two metal columns, the monitored sample two ends of tape label point respectively with sample stage on two gold
Category post is connected, and piece pole of connection power supply of two metal columns, another pole of power supply is connected with the time relay,
The time relay is connected with two another of metal column；Sample stage is arranged in shot box, just to the viewfinder of shot box；Take the photograph
Viewfinder upper left side and upper right side are respectively provided with two lighting sources in shadow case；Just to the left and right sides point of sample stage on shot box
Zhuan You not two cooling fans；Two cooling fans are connected in series, one end connect power supply a pole, the other end Connection Time after
Electrical equipment；Industrial camera is just to viewfinder and monitored sample；Temperature thermocouple is attached on monitored sample；Temperature thermocouple connects
Jointing temp capture card；Industrial camera and temperature acquisition card connection computer.
Further to realize the utility model purpose, it is preferable that the industrial camera is arranged on camera foot stool, institute
Camera foot stool height adjustable is stated, to obtain preferable shooting quality.
Preferably, the shot box is made up of the lighttight acrylic board of black.
Preferably, the power supply is D.C. regulated power supply.
Preferably, the lighting source is the photography luminaire of 5500K colour temperatures.
Preferably, the camera foot stool top tape ball-shaped cloud platform, makes industrial camera adjustable angle.
Preferably, the temperature thermocouple is the thin K-type thermocouple of the spy of 80 μm of diameter.
Preferably, the temperature thermocouple by high temperature resistant heat insulation tape-stripping the shape memory alloy material table
Face.
Preferably, the color of the mark point on the shape memory alloy material is clear and legible with respect to surrounding environment.
The time relay is on-delay type and need not be connected with computer.
Relative to prior art, the utility model has the following advantages that：
1) the utility model can realize shape memory alloy material under electric-thermal coupled field the test of function fatigue behaviour and
Characterize.Show and monitor several interested positions on shape memory alloy material intuitively, comprehensively, in real time by imaging method
Change in displacement, compensate for the unicity of traditional displacement characterizing method.
2) the utility model characterizes shape memory alloy material in electric current and joule by integrating temperature and displacement data
The Changing Pattern of temperature change and the deformation produced by phase transformation under thermal coupling effect, Indirect evaluation microstructure evolution process,
So as to the function fatigue life for further predicting shape memory alloy material under electric-thermal coupled field provides foundation.
3) the utility model test system can be realized to involved shape memory alloy material in electric current and joule thermal coupling
The monitoring of displacement and temperature under effect, while obtaining the displacement of one or several mark points and temperature number on monitored sample
According to, it is adaptable to characterize function fatigue behaviour of the shape memory alloy material under electric-thermal coupled field.
4) the utility model can be also inspired to (such as electric in other multiple physical fields temperature and the coupling processing of displacement data
Field, magnetic field, temperature field, stress field etc.) material that works under coupling condition or component function fatigue behaviour sign.
5) the utility model is upgraded and for many with reference to unconventional loading means to atypia mechanical property testing system
Fatigue property test under physic field coupling provides more references.
Brief description of the drawings
Fig. 1 is the structural representation of the shape memory alloy material function fatigue property test system based on electric-thermal coupled field
Figure.
Shown in figure：Monitored shape memory alloy material 1, fatigue test specimen platform 2, metal column 3, power supply 4, when
Between relay 5, shot box 6, viewfinder 7, lighting source 8, cooling fan 9, industrial camera 10, camera foot stool 11, thermometric
Thermocouple 12, temperature acquisition card 13, computer 14.
Specific embodiment
It is described in detail to of the present utility model below in conjunction with accompanying drawing, so as to be more clearly understood that this practicality is new
Type shape memory alloy material function fatigue property test system under electric-thermal coupled field.
As shown in figure 1, the shape memory alloy material function fatigue property test system based on electric-thermal coupled field, is used for
Shape memory alloy material function fatigue property test under electric-thermal coupled field, including electric power system, camera chain, temperature are adopted
Collecting system, control system and monitor station；Electric power system is made up of the loop of power supply 4 and connecting wire；Camera chain includes
Shot box 6, lighting source 8, industrial camera 10 and camera foot stool 11 with viewfinder 7；Temperature acquisition system includes thermometric
Thermocouple 12 and temperature acquisition card 13；Control system includes the time relay 5 and computer 14；Monitor station includes the He of sample stage 2
Metal column 3；
Sample stage 2 is provided with two metal columns 3, the two ends of monitored sample 1 of tape label point respectively with sample stage 2 on two
Root metal column 3 is connected, two metal columns, 3 poles of connection power supply 4, another pole of power supply 4 and time after
Electrical equipment 5 is connected, and the time relay 5 is connected with two another of metal column 3；Sample stage 2 is arranged in shot box 6, just to taking the photograph
The viewfinder 7 of shadow case；The upper left side of viewfinder 7 and upper right side are respectively provided with two lighting sources 8 in shot box 6, to be monitored sample
Product 2 provide photography light；The left and right sides on shot box 6 just to sample stage 2 is respectively provided with two cooling fans 9；Two cooling fans 9
It is connected in series, one end connects a pole of power supply 4, other end Connection Time relay 5；The time relay 5 and power supply 4
It is connected；Industrial camera 10 is arranged on camera foot stool 11；Industrial camera 10 is just to viewfinder 7 and monitored shape memory
Alloy material 1；Temperature thermocouple 12 is posted on monitored shape memory alloy material 1；Temperature thermocouple 12 connects temperature acquisition
Card 13；Photo and temperature data are transferred to computer 14 by industrial camera 10 and temperature acquisition card 13 by communication cable；Take the photograph
Shadow case 6 is made up of the lighttight acrylic board of black.
The time relay 5 is in the monitored loop of shape memory alloy material 1 and the loop of cooling fan 9 simultaneously, one end
Connection power supply 4, other end connection monitored shape memory alloy material 1 and cooling fan 9, time relay independent control
Power supply 4 is respectively the time of monitored shape memory alloy material 1 and the interleaved power of cooling fan 9.
The power supply 4 is preferably D.C. regulated power supply.
The time relay is on-delay type and need not be connected with computer.
The lighting source is preferably the photography luminaire of 5500K colour temperatures.
The camera foot stool top preferably spherical head, makes industrial camera adjustable angle.
The temperature thermocouple is preferably the thin K-type thermocouple of spy of 80 μm of diameter.
The temperature thermocouple is by high temperature resistant heat insulation tape-stripping on the surface of the shape memory alloy material.
Test system first draws one or several mark points using preceding on monitored shape memory alloy material 1, marks
Remembering the color of point need to be clearly distinguishable from ambient color；The two ends of monitored shape memory alloy material 1 are surveyed with fatigue respectively
Two metal columns 3 in sample sample platform 2 are connected；A pole of metal column 3 one and power supply 4 is connected with wire, by metal column 3
Another be connected with an output port of the time relay 5；The centre position in 6 one faces of shot box is provided with a viewfinder
7, the sample stage 2 that will be equipped with monitored shape memory alloy material 1 is placed in the photography being made up of the lighttight acrylic board of black
In case 6 and just viewfinder 7 is being placed；Two cooling fans 9 for being located at the both sides of sample stage 2 on shot box 6 are connected in series, then
One end of cooling fan 9 of series connection is connected with power supply 4, another output port phase of the other end and the time relay 5
Even；Do not have loaded one to be extremely connected the input port of the time relay 5 and power supply 4；Camera foot stool 11 is placed in and is taken the photograph
Shadow case 6 it is outer just to viewfinder 7 at, industrial camera 10 is arranged on camera foot stool 11, adjust the angle of camera foot stool 11
And height, make industrial camera 10 just to being monitored shape memory alloy material 1.With high temperature resistant heat insulation adhesive tape by a diameter of 80 μm
Ultra-fine K-type thermocouple 12 be firmly pasted onto the surface of monitored shape memory alloy material 1, the other end of temperature thermocouple 12 and temperature
Degree capture card 13 is connected；Then industrial camera 10 and temperature acquisition card 13 are connected to computer 14 respectively with communication cable
On.
Before carrying out function testing fatigue, two lighting sources 8 positioned at shot box inside viewfinder or so top are first opened,
Image capture software, temperature acquisition software and data processing software in opening computer 14；Image capture software is general work
Industry camera software kit, settable photo size and taking pictures is spaced and by the dynamic deformation of photographic window mouthful real-time monitoring sample；
Temperature acquisition software is general data capture card software kit, and the dynamic of temperature data acquisition interval and real-time monitoring temperature can be set
State changes；Data processing software includes displacement software for calculation and data integration software；Displacement software for calculation is based on matlab's
Program, the program first reads the photo captured by image capture software, due to being monitored the rgb value of mark point on sample in photo
There is significant difference with the rgb value of other pixels in picture, program is capable of identify that the mark point with specific rgb value in picture
Coordinate, the coordinate value with the coordinate value of mark point on not deformed sample is carried out into difference operation and unit pixel representative is multiplied by
Physical length, can obtain the displacement of mark point on the moment monitored sample；Data Integration software is the journey based on labvi ew
Sequence, the program can respectively read the data of institute's collecting temperature passage and displacement passage and recognize the creation time of each data, will
The temperature data that the same time creates is corresponding with displacement data, output temperature-displacement curve；In observation image capture software
Photography window, it is ensured that monitored shape memory alloy material 1 is in the centre position of picture and mark captured by industrial camera 10
Note point is clear and legible；Photo size and interval of taking pictures are set in image capture software；Temperature is set in temperature acquisition software
Acquisition interval；The color value (RGB) of mark point on the monitored sample 1 of input in picture reading program；On the time relay 5
Two conduction times in loop of its control are set so that power supply 4 is monitored shape note in the time interval of setting
Recall alloy material 1 and the interleaved power of cooling fan 9；The output voltage of power supply 4 is set.
After completing the assembling of function fatigue test system and software and hardware parameter setting, open power supply 4 and switch, start
The start program of data acquisition and processing (DAP) software；Monitored shape memory alloy material 1 can be in galvanization due to Joule heat
Effect and heat up and lowered the temperature so as to produce alternate change in shape by cooling fan 9 after a loss of power, displacement calculation procedure can be to work
Mark point on photo captured by industry camera 10 carries out the displacement that RGB is parsed and calculated the mark point；Data integration program
Temperature-shift value relation is drawn by integrating mutually temperature channel data in the same time and displacement channel data.
It is pointed out that power supply recited above, the time relay, cooling fan, industrial camera, camera
Foot stool, temperature acquisition card, computer etc. can use any suitable model known to persons of ordinary skill in the art.
In addition, though in above-described embodiment, the photo taken by industrial camera obtains quilt via computer disposal
The displacement of mark point on monitoring sample, it should be understood by those skilled in the art that can be by taken one or several
Individual photo carries out the other manner such as artificial treatment and artificial calculating to obtain the displacement of one or several mark points on sample.
The utility model obtains the shape memory alloy material in electric current and Joule heat coupling by above-mentioned test system
Displacement and temperature this two significant datas under cooperation, statistical disposition and quantitative analysis are carried out by the data for obtaining
Realize the sign to shape-memory material function fatigue behaviour under electric-thermal coupled field.
On the basis of the utility model or under inspiration, those skilled in the art may do various changes to the utility model
Or modification, these modifications or improvements and embodiments thereof are equally also fallen within concept disclosed in the present application and technology frame
Under frame.
Claims (9)
1. the shape memory alloy material function fatigue property test system of electric-thermal coupled field is based on, it is characterised in that including supplying
Electric system, camera chain, temperature acquisition system, control system and monitor station；Electric power system is mainly power supply；Camera chain
Including the shot box with viewfinder, lighting source and industrial camera；Temperature acquisition system includes that temperature thermocouple and temperature are adopted
Truck；Control system includes the time relay and computer；Monitor station includes sample stage and metal column；
Sample stage is provided with two metal columns, the monitored sample two ends of tape label point respectively with sample stage on two metal columns
It is connected, piece pole of connection power supply of two metal columns, another pole of power supply is connected with the time relay, the time
Relay is connected with two another of metal column；Sample stage is arranged in shot box, just to the viewfinder of shot box；Shot box
Interior viewfinder upper left side and upper right side are respectively provided with two lighting sources；The left and right sides on shot box just to sample stage fills respectively
There are two cooling fans；Two cooling fans are connected in series, and one end connects a pole of power supply, other end Connection Time relay
Device；Industrial camera is just to viewfinder and monitored sample；Temperature thermocouple is attached on monitored sample；Temperature thermocouple is connected
Temperature acquisition card；Industrial camera and temperature acquisition card connection computer.
2. the shape memory alloy material function fatigue property test system based on electric-thermal coupled field according to claim 1
System, it is characterised in that the industrial camera is arranged on camera foot stool, the camera foot stool height adjustable.
3. the shape memory alloy material function fatigue property test based on electric-thermal coupled field according to claim 1 and 2
System, it is characterised in that the top tape ball-shaped cloud platform of the camera foot stool.
4. the shape memory alloy material function fatigue property test system based on electric-thermal coupled field according to claim 1
System, it is characterised in that the shot box is made up of the lighttight acrylic board of black.
5. the shape memory alloy material function fatigue property test system based on electric-thermal coupled field according to claim 1
System, it is characterised in that the power supply is D.C. regulated power supply.
6. the shape memory alloy material function fatigue property test system based on electric-thermal coupled field according to claim 1
System, it is characterised in that the lighting source is the photography luminaire of 5500K colour temperatures.
7. the shape memory alloy material function fatigue property test system based on electric-thermal coupled field according to claim 1
System, it is characterised in that the temperature thermocouple is the thin K-type thermocouple of the spy of 80 μm of diameter.
8. the shape memory alloy material function fatigue property test based on electric-thermal coupled field according to claim 1 or 7
System, it is characterised in that the temperature thermocouple by high temperature resistant heat insulation tape-stripping the shape memory alloy material table
Face.
9. the shape memory alloy material function fatigue property test system based on electric-thermal coupled field according to claim 1
System, it is characterised in that the color of the mark point on the shape memory alloy material is clear and legible with respect to surrounding environment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621296018.1U CN206270163U (en) | 2016-11-30 | 2016-11-30 | Shape memory alloy material function fatigue property test system based on electro thermal coupling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621296018.1U CN206270163U (en) | 2016-11-30 | 2016-11-30 | Shape memory alloy material function fatigue property test system based on electro thermal coupling |
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| CN206270163U true CN206270163U (en) | 2017-06-20 |
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| CN201621296018.1U Expired - Fee Related CN206270163U (en) | 2016-11-30 | 2016-11-30 | Shape memory alloy material function fatigue property test system based on electro thermal coupling |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106442124A (en) * | 2016-11-30 | 2017-02-22 | 华南理工大学 | Shape-memory alloy material fatigue performance test system in electricity-thermal coupling field |
-
2016
- 2016-11-30 CN CN201621296018.1U patent/CN206270163U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106442124A (en) * | 2016-11-30 | 2017-02-22 | 华南理工大学 | Shape-memory alloy material fatigue performance test system in electricity-thermal coupling field |
| CN106442124B (en) * | 2016-11-30 | 2023-07-18 | 华南理工大学 | Fatigue performance testing system for shape memory alloy material in electric-thermal coupling field |
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