CN101746065A - Preparation method of interplantation shape memory alloy wire layering composite and shaping mould - Google Patents
Preparation method of interplantation shape memory alloy wire layering composite and shaping mould Download PDFInfo
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- CN101746065A CN101746065A CN200910244878A CN200910244878A CN101746065A CN 101746065 A CN101746065 A CN 101746065A CN 200910244878 A CN200910244878 A CN 200910244878A CN 200910244878 A CN200910244878 A CN 200910244878A CN 101746065 A CN101746065 A CN 101746065A
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Abstract
The invention relates to a preparation method of interplantation shape memory alloy wire layering composite and a composite shaping mould for realizing the method. The method uses a specially designed mould and implants a group or several groups of shape memory alloy wires which are distributed in parallel in the single target layer or a plurality of target layers during layering of fiber reinforcement or the prepreg thereof, so that the method is suitable for mould pressing or resin vacuum auxiliary shaping. The shape memory alloy wire interplanted with the method can overcome the influence of mould pressing and resin flowing and is stably distributed at the preset position of composite thickness at designed pre-elongation amount to form composite with reliable and accurate vibration performance; the shaping mould is a set of combined metal matched moulds and comprises a set of steel frame assemblies, a metal surface plate patrix, a counterdie with a groove and a counterdie cover plate, wherein the steel frame assemblies can clamp the shape memory alloy wire and can control the elongation amount and the horizontal height thereof.
Description
Technical field
The present invention relates to a kind of moving fiber reinforced composite board of controlled damping of interplantation shape memory alloy wire material, be specifically related to the forming method and the mould of this sheet material.
Background technology
Vibration control is a research direction of the adaptive performance of composite, and its main purpose is to reduce vibration amplitude, strengthens the damping and the control vibration shape, realizes elimination, control to structural vibration and noise.
In the composite structure goods, vibration control has very important Practical significance.As adding damping material in large-scale warehouse, the guided missile launcher, can improve the system works precision; Add in body of a motor car, seat, the motor cover in noise, the especially vehicle body that produces when damping material helps to eliminate work, utilize the Active Vibration Control technology can increase the driver and the personnel's of riding comfort; And in some sports such as alpine skiing, tennis, table tennis and golf, exercise can produce a troublesome wide-band vibration in use, this vibration is controlled can be improved athletic feel and accuracy.In addition, some architectural paulins, lid class formation, large-scale blades etc. often are subjected to vibrating fatigue and destroy, and vibration damping can prolong its service life.
Composite structure is implemented vibration control, need to implant damping viscous body or other functional material, these materials comprise piezoelectric, electric or magnetic rheological body, magnetostriction materials and marmem etc.Wherein, the marmem elastic modelling quantity is big, and the phase transformation restoring force is big, and recoverable deflection is big, is very suitable for damping element and control element as the high-performance composite materials structure.
(Shape memory alloy SMA) is a kind of material with property to marmem.From the eighties in last century, shape memory alloy wire material is developed and applied, and by 2004, silk material fineness just can reach tens microns, can also keep original shape memory function simultaneously.China is from the research of beginning in 1977 about SMA, and conventional at present marmem product comes into the market.So far, kind surplus the alloy of having found with SME has 20.
The function of SMA derives from its inner phase-state change, and under the free state, SMA mainly contains two kinds of phases: high temperature austenite and low-temperature martensite.When extraneous variations in temperature, reversible phase transformation takes place between these two phases.The significant temperature in phase change zone has martensite phase transformation initial temperature (Martensite started, Ms), austenite phase transformation initial temperature (Austenite started, As), austenite phase transformation final temperature (Austenite finished, Af) and martensite phase transformation final temperature (Martensite finished, Mf).
SMA has two special natures that are different from other metal material.One is a super-elasticity, show as and work as serviceability temperature on its Af, martensite phase transformation under stress-induced takes place in Ovshinsky figure's SMA under external force, the stress-induced martensite that produces can be eliminated automatically by austenite phase transformation after stress is removed, and the macroscopic deformation under the stress effect also can the complete obiteration along with reverse transformation.The distortion that the SMA phase transformation causes has relaxation effect, also present on its stretching-rebound curve and have significant mechanics hysteresis loop, illustrate that the super body of SMA can absorb considerable energy by martensite phase transformation and reverse transformation in the circulation of stretching-answer, so the super body of shape SMA itself has good damping.It two is a shape memory characteristic, show as after handling through the high temperature actual effect, SMA can remember the form under its austenite, after carrying out the distortion of certain limit under the martensitic phase state, in subsequently heating and when surpassing martensitic phase disappearance temperature, material can return to the initial configuration of former Ovshinsky under mutually fully.Because before and after the temperature change, the martensitic Young's modulus of SMA only is that it is austenitic about 1/3, and the shape memory characteristic of SMA can produce superpower restoring force, thus shape memory characteristic to make that SMA has intelligent.
SMA can make thread, and is compound or be embedded in the composite with matrix resin, by self property or utilize temperature control phase transformation to realize the vibration control of composite structure.SMA is divided into Passive Control and ACTIVE CONTROL to the vibration control of composite structure.
Passive Control adopts the super elater of structure interplantation SMA, and the super elater of SMA has high-modulus, high damping, plants in the suitable position of structure and not only can improve composite structure rigidity, can also absorb vibrational energy, weakens the vibration of composite structure.In recent years, domestic and international research personnel had done 3～6% prestretched to super elater in order to strengthen the vibration control effect of super elater before composite implant material.The active vibration control of SMA divides active material parameter regulative mode (APT-Active PropertyTuning) and active strain energy regulative mode (AET-Active Strain Energy Tuning) again.The APT control method is utilized the greatest differences of austenite and martensite elastic modelling quantity after the phase transformation, in the direct composite implant material structure of the SMA martensite under the non-stress state, SMA after exciting can change composite local elasticity modulus, thereby change composite vibration overall performance, this method is in temperature-rise period, can't produce SMA phase transformation restoring force in the composite structure, therefore to the vibration control ability a little less than.The AET method is to be in the SMA martensite composite implant material of stress extended state, and after exciting, not only the elastic modelling quantity of SMA is greatly enhanced, and SMA also can produce the phase transformation restoring force, so the AET method is more effective.
As seen, no matter be to adopt which kind of method, the vibration control of the composite of interplantation SMA realizes by SMA material behavior or phase transformation drive characteristic, therefore, should consider that project organization reasonably realizes the vibration control effect of presetting.For example, the implantation amount of SMA silk, pre-elongation, implantation position and mode etc. all are the key factors that will consider.These key elements can the theory by structural mechanics be calculated and means such as simulation analysis design, and in the machine-shaping process of composite product, how can accurately control these key elements, realize that the composite default capabilities is a key.
So far, many about the composite research of interplantation SMA at laboratory stage.Most researchers adopts manual operations, a few studies person is only arranged by the fixing SMA silk of the device of design certainly.Fixedly SMA silk of simple anchor clamps is used in the American-European and many breadboard researchs of Japan, during composite curing, in the middle of anchor clamps, place mould, make the SMA silk of anchor clamps clamping participate in mold pressing, like this, SMA silk through prestretched about 3～6% can more stably keep default elongation in the composite material solidification forming process, behind the resin solidification, the prestrain of SMA silk obtains preserving.The defective that this method exists is: 1. in the shape-memory alloy wire quantity of interplantation more for a long time, apparatus structure is some heaviness unavoidably, and manual operations too much also deforms in the anchor clamps moving process easily in the process, cause the variation of SMA dependent variable easily, produce very big operate miss; 2. when the preparation laminated composite, the individual layer SMA silk that fixes can only be implanted in same one deck of composite, attainable structure kind is limited, if multilayer SMA silk is implanted as requested, and also need be by other means.
But still do not find a kind of report that can control the composite material solidification device of shape-memory alloy wire at present, and obviously be not suitable for mass production based on the small test chamber device of manual operations, need to consider that the design special device is to simplify work flow.Based on this consideration, the present invention uses the clamping of steel framework assembly with the SMA silk, and make it to be integrated in the composite material forming mould, the arranging of the shop layer of composite fiber goods or its prepreg and SMA, prestretched are finished together, will can enhance productivity undoubtedly like this; In the process of design, make every effort to reduce manual operations as far as possible, can improve the implantation precision of SMA silk greatly.
Summary of the invention
The composite material and preparation method thereof that the purpose of this invention is to provide a kind of interplantation shape-memory alloy wire.The special mould of introducing in its application of the invention can accurately be controlled the pre-elongation and the implantation position of shape-memory alloy wire, and can implant the multilayer shape-memory alloy wire simultaneously.
To achieve these goals, special mould used in the present invention possesses following feature:
Mould is a sectional die, mainly is divided into patrix, counterdie cover plate, counterdie four parts of steel framework assembly and band groove; In use, the steel framework assembly is placed in the counterdie groove, covered the counterdie cover plate after, form the counterdie assembly, can realize composite material process plannings such as mold pressing, vacuum assisted resin moulding with patrix.
The steel framework assembly is designed to stretch and the solid shape memory alloy wire, and it is divided into stiff end and movable end, and wherein, stiff end is fixed on the counterdie left side, and movable end and counterdie groove are coupled, and can slidably reciprocate along groove.Stiff end has two identical leading screws to link to each other with movable end, and leading screw one side withstands on stiff end base plate bottom, and the other end passes the internal thread of movable end bottom, and the synchronous rotation of two rhizoid thick sticks can be controlled the sliding displacement of movable end.Fixing gear above the leading screw, two rhizoid thick sticks are by gear drive, synchronously rotate under a stepper motor drives, and stepper motor connects external control circuit, rotation direction and revolution that can automatic control motor.
Train wheel bridge and clamp nut are arranged at the top of steel framework assembly, are used for the pinch form memory alloy wire.For limiting the implantation position of which floor shape-memory alloy wire, according to needing, the leaf gauge of being furnished with one group of different-thickness between last lower plate is available, plant in the shape-memory alloy wire of diverse location and be clamped between the leaf gauge, and the prestretched of shape-memory alloy wire is to be finished by circuit control step motor.
Concrete steps of the invention process are as follows:
(1) membrane module down is installed, behind the coating release agent of counterdie surface, is begun to carry out the shop layer of fibre or its prepreg, in the layer of setting, parallel implantation shape-memory alloy wire; When spreading layer, by reasonably selecting the thickness of leaf gauge in the steel framework, the interior shape-memory alloy wire that is implanted in different fibre layers is fixed on the different thickness positions, after the shop layer finishes, it adds a small amount of tension force in advance and guarantees that it is parallel straight to shape-memory alloy wire, uses clamp nut to clamp steel framework;
(2) by control circuit, start stepper motor and drive the interior leading screw rotation of counterdie, the tension shape memory alloy wire stops to designed pre-elongation;
(3) charging into resin in counterdie is the fiber prepreg as what spread layer employing, directly compression molding; As spread the fibre that is that layer adopts, charge into resin after, curing molding;
With employed method in the research of reporting before, the present invention has the following advantages:
1. the present invention is by using leaf gauge, and the position of shape-memory alloy wire is fixed, can clamping multilayer shape-memory alloy wire between the leaf gauge, can implant the multilayer shape-memory alloy wire easily simultaneously;
2. the present invention is after clamping the shape-memory alloy wire pre-tension, until in the process of mould matched moulds composite curing, abandoned manual operations fully, the implantation precision of shape-memory alloy wire is improved widely;
3. the present invention is designed into one with stretch fixture and composite material forming mould of shape-memory alloy wire, realizes the marmem prestretched in the layer process of shop, has shortened work flow, is fit to serialization production.
Description of drawings
Fig. 1 by among the present invention the combined effect schematic diagram of use mould;
Fig. 2 is the schematic side view of steel framework assembly;
Fig. 3 is the schematic top plan view of steel framework assembly;
Have among the figure: metal plate patrix 1; Counterdie cover plate 2; Steel framework assembly 3; The counterdie 4 that has groove; Last steel framework clamping plate 5; Leaf gauge 6; Fixing steel framework base 7; The steel framework base 8 that has the activity of internal thread; Clamp nut 9; Stepper motor 10; Leading screw 11; Be fixed on the shape-memory alloy wire 12 in the different-thickness layer.
The specific embodiment
Use glass fibre/epoxy one-way tape preparation to have the laminated composite plate of 12 layer thickness parallel laid layers, mold pressing thickness after the design is 1.2mm, wherein the diameter of the many shape-memory alloy wires of Cai Yonging is 0.2mm, the percentage elongation with 5%, the degree of depth of parallel implantation apart from about the plate surface 0.4mm.During preparation, one-way tape is spread 8 layers according to design in advance, back spread geometry memory alloy wire, leaf gauge thickness is 0.8mm on the selection steel framework assembly, continue to spread 4 layers that layer is left, clamp left side steel framework chuck, every shape-memory alloy wire is applied the pre-tension of 0.5N from the right side, clamp the right side chuck; It is 5% of composite length that the stepper motor traverse is set, and after prestretched is stable, starts the heating pressurized equipment, compression molding.By observing, residing position of shape alloy silk and state have kept stretching parastate in the compression molding goods, and as seen in the compression molding process, arrange and the implantation position of shape-memory alloy wire can reach designing requirement.
Preparation thickness is 6 layers of glass fibre plain cloth/epoxy composite material plate of 2.4mm, and the diameter of many shape-memory alloy wires of employing is 0.2mm, the percentage elongation with 5%, the degree of depth of parallel implantation apart from about the plate surface 0.4mm.During preparation, earlier the glass fibre plain is laid 4 layers on counterdie and replant shape-memory alloy wire, method after whole glass fabric layings finishes, is watered deployed epoxy resin adhesive liquid with according to embodiment 1, regulates temperature and pressure, compression molding.Microphoto finds that shape-memory alloy wire still can keep stretching parastate, and its implantation position reaches designing requirement substantially.
The present invention is not limited to above embodiment, and the present invention also is suitable for can specifically implementing parameter adjustment to different laminated composites not breaking away from technology of the present invention and using under the prerequisite.
Claims (1)
1. mould that is used for interplantation shape-memory alloy wire Composite Preparation, it is characterized in that: the shop layer and the prestretched of shape-memory alloy wire can be finished in the forming process of composite once, mould has following architectural feature:
1) mould is a sectional die, is divided into patrix, and the counterdie cover plate can stretch and the steel framework assembly of solid shape memory alloy wire and counterdie four parts of band groove, and wherein, the steel framework assembly is placed in the counterdie groove;
2) the steel framework assembly is divided into stiff end and movable end, and wherein, stiff end is fixed on the counterdie left side, and movable end and counterdie groove are coupled, and can slidably reciprocate along groove; Stiff end has two identical leading screws to link to each other with movable end, and the movable end bottom has the internal thread that passes for leading screw, can be controlled the sliding displacement of movable end by the synchronous rotation of two rhizoid thick sticks; Train wheel bridge and clamp nut are arranged at the top of stiff end and movable end, are used for the pinch form memory alloy wire, are provided with one deck or which floor leaf gauge between train wheel bridge and the steel framework base;
3) fix the stepper motor that a control circuit drives in the groove, by gear and the engagement of two rhizoid thick sticks, stepper motor can be controlled leading screw and rotate synchronously, accurately controls the displacement of steel framework assembly movable end, the groove outside is provided with graduated scale, also can estimate adjusting;
2. application rights requires the interplantation shape-memory alloy wire composite material and preparation method thereof of 1 described mould, it is characterized in that:
1) with the counterdie cover plate, after steel framework assembly and the counterdie assembling,, begin to carry out the shop layer of fibre or its prepreg at upper and lower mould surface coating release agent, in the layer of setting, parallel implantation shape-memory alloy wire; When spreading layer, by reasonably selecting the thickness of leaf gauge in the steel framework, the interior shape-memory alloy wire that is implanted in different fibre layers is fixed on the different thickness positions, after the shop layer finishes, it adds a small amount of tension force in advance and guarantees that it is parallel straight to shape-memory alloy wire, uses clamp nut to clamp steel framework;
2) by control circuit, start stepper motor and drive the interior leading screw rotation of counterdie, the tension shape memory alloy wire stops to designed pre-elongation;
3) charging into resin in counterdie is the fiber prepreg as what spread layer employing, directly compression molding; As spread the fibre that is that layer adopts, charge into resin after, curing molding;
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| CN200910244878A CN101746065A (en) | 2009-12-17 | 2009-12-17 | Preparation method of interplantation shape memory alloy wire layering composite and shaping mould |
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| CN200910244878A CN101746065A (en) | 2009-12-17 | 2009-12-17 | Preparation method of interplantation shape memory alloy wire layering composite and shaping mould |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103203864A (en) * | 2012-01-12 | 2013-07-17 | 通用汽车环球科技运作有限责任公司 | Surface texturing using foldable structures and active material actuation |
| CN106273083A (en) * | 2016-08-27 | 2017-01-04 | 上海交通大学 | The mold tooling assembly of a kind of intelligent composite actuator and preparation method |
| CN106393730A (en) * | 2016-10-20 | 2017-02-15 | 哈尔滨工程大学 | Preparation method for shape memory alloy wire mixing composite and shape memory alloy wire positioning clamp |
| CN109016563A (en) * | 2018-07-25 | 2018-12-18 | 西南交通大学 | A kind of device and method for eliminating residual stress of composites control curing deformation |
| CN111206722A (en) * | 2018-11-22 | 2020-05-29 | 费希尔厂有限责任两合公司 | Fiber composite material |
| WO2022052359A1 (en) * | 2020-09-08 | 2022-03-17 | 江苏新扬新材料股份有限公司 | Carbon fiber composite piston paving die |
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2009
- 2009-12-17 CN CN200910244878A patent/CN101746065A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103203864A (en) * | 2012-01-12 | 2013-07-17 | 通用汽车环球科技运作有限责任公司 | Surface texturing using foldable structures and active material actuation |
| CN103203864B (en) * | 2012-01-12 | 2016-04-20 | 通用汽车环球科技运作有限责任公司 | Use folding structure and active material actuated surface texturizing |
| CN106273083A (en) * | 2016-08-27 | 2017-01-04 | 上海交通大学 | The mold tooling assembly of a kind of intelligent composite actuator and preparation method |
| CN106273083B (en) * | 2016-08-27 | 2018-09-14 | 上海交通大学 | A kind of the mold tooling component and preparation method of intelligent composite actuator |
| CN106393730A (en) * | 2016-10-20 | 2017-02-15 | 哈尔滨工程大学 | Preparation method for shape memory alloy wire mixing composite and shape memory alloy wire positioning clamp |
| CN109016563A (en) * | 2018-07-25 | 2018-12-18 | 西南交通大学 | A kind of device and method for eliminating residual stress of composites control curing deformation |
| CN109016563B (en) * | 2018-07-25 | 2023-06-09 | 西南交通大学 | Device and method for eliminating residual stress of composite material and controlling solidification deformation |
| CN111206722A (en) * | 2018-11-22 | 2020-05-29 | 费希尔厂有限责任两合公司 | Fiber composite material |
| WO2022052359A1 (en) * | 2020-09-08 | 2022-03-17 | 江苏新扬新材料股份有限公司 | Carbon fiber composite piston paving die |
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Application publication date: 20100623 |