CN102097583B - Method for packaging piezoelectric ceramic fiber containing metal core - Google Patents
Method for packaging piezoelectric ceramic fiber containing metal core Download PDFInfo
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- CN102097583B CN102097583B CN 201010563684 CN201010563684A CN102097583B CN 102097583 B CN102097583 B CN 102097583B CN 201010563684 CN201010563684 CN 201010563684 CN 201010563684 A CN201010563684 A CN 201010563684A CN 102097583 B CN102097583 B CN 102097583B
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- 239000000835 fiber Substances 0.000 title claims abstract description 160
- 239000000919 ceramic Substances 0.000 title claims abstract description 70
- 239000002184 metal Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000004806 packaging method and process Methods 0.000 title abstract description 3
- 239000003292 glue Substances 0.000 claims abstract description 37
- 239000011248 coating agent Substances 0.000 claims abstract description 23
- 238000000576 coating method Methods 0.000 claims abstract description 23
- 238000009413 insulation Methods 0.000 claims description 45
- 125000006850 spacer group Chemical group 0.000 claims description 27
- 238000005266 casting Methods 0.000 claims description 23
- 238000012856 packing Methods 0.000 claims description 15
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 abstract description 7
- 230000001681 protective effect Effects 0.000 abstract 4
- 239000000853 adhesive Substances 0.000 abstract 2
- 230000001070 adhesive effect Effects 0.000 abstract 2
- 230000007547 defect Effects 0.000 abstract 1
- 238000012858 packaging process Methods 0.000 abstract 1
- 239000004744 fabric Substances 0.000 description 23
- 238000012360 testing method Methods 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 239000000741 silica gel Substances 0.000 description 5
- 229910002027 silica gel Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000037237 body shape Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 238000012536 packaging technology Methods 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
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Abstract
The invention discloses a method for packaging piezoelectric ceramic fiber containing a metal core, which comprises the steps of: connecting a metal core electrode and an outer layer coating electrode of the piezoelectric fiber with two ports of an external terminal by using conductive adhesive; coating a layer of protective adhesive for protecting an electrode contact at the junction between the metal core electrode of the piezoelectric fiber and the port of the external terminal, and simultaneously fixing the relative position of the external terminal and the piezoelectric fiber; installing a centering controller inside a fiber protective tube and then enabling the piezoelectric fiber to penetrate into the fiber protective tube; and filling insulated embedding glue at the junction of the metal core electrode and the external terminal, at the junction of the outer layer coating electrode and the external terminal and at the port of the fiber protective tube, and curing for 8 to 24 hours to obtain the packaged piezoelectric ceramic fiber containing the metal core. The method has the function of realizing safe and convenient wiring of the piezoelectric fiber and conveniently installing and clamping the piezoelectric fiber and overcomes the defects that the piezoelectric fiber is liable to be broken in the using process, and the like. And simultaneously, the packaging process is simple and the material cost is low, thereby facilitating the wide application of the method.
Description
Technical field
The present invention relates to a kind of method for packing of piezoelectric ceramic fibers, relate in particular to a kind of method for packing that contains metal-cored piezoelectric ceramic fibers.
Background technology
Piezoelectric is the functional material of realizing that mechanical energy and electric energy are changed mutually, the effect in bringing into play in function translator spares such as electricity, magnetic, sound, light, heat, gas, power.It is a kind of function element commonly used in the intelligence structure.The function element of intelligence structure adopts the version integrated with basal body structure mostly, and for the ease of mutually integrated with basal body structure, this geometry and size to the function element in the intelligence structure has proposed new requirement.Traditional piezoelectricity function element is in the majority with bulk and sheet, because volume is difficult for more greatly and basal body structure is integrated, when imbedding basal body structure, intensity and reliability effect to structure are very big, also can change a lot of performances of structure, even influence the use of structure, shorten the useful life of structure.Traditional in addition piezoelectric exists significant disadvantage, because the fragility of pottery, piezoelectric ceramic can't bear big impact, has therefore limited the extensive use of piezoelectric ceramic.The desirable geometry that is easy to integrated requirement that satisfies the intelligence structure proposition has thin plate and fiber, require and overcome the shortcoming of conventional piezoelectric materials at such geometry, middle nineteen nineties in last century U.S. MIT drives material and the structural experiment chamber has proposed fibrous piezoelectric (AFC:Active Fiber Composite, fiber-shaped piezoelectric material) concept, and successfully made AFC.Subsequently, shortcoming at AFC, the preparation of the piezoelectric fabric of the NASA of NASA and application start deep research, they have proposed the employing doctor-blade casting process and have prepared piezoelectric membrane, through certain sintering process, adopt patterning method to prepare piezoelectric fabric then, and successfully made MFC (Macro Fiber Composite).
But the fiber among AFC and the MFC can only be in polymer, and integral body is used as a device, can not use separately, and only the part fiber in crossed electrode can be used as sensing and drives usefulness, and its efficient is subjected to very big influence.
These shortcomings at AFC and MFC, application number is that 200510075352.4 Chinese invention patent applications disclose a kind of metal-cored piezoelectric ceramic fibers that has, its biggest advantage just is that the metal-cored electrode that can be used as uses, this needs plate electrode at fiber surface, and single fiber just can be used as transducer or driver.But this piezoelectric fabric has run into some problems in actual applications.At first, because fragility and the size of fiber own of outer field piezoceramic material are very little, if directly fiber is integrated in the structure, fiber is very easy to disconnected; Secondly, metal-cored and the diameter of fiber own is all very little, electrode is drawn from the metal-cored and outer coating electrode very difficult.Normally adopt in using at present be welded direct to lead metal-cored and the coating electrode on.But because the not corresponding protection of pad and fiber in use is easy to owing to affect lead to cause fiber breakage or electrode to come off.
Summary of the invention
1, technical problem: the technical problem to be solved in the present invention provides a kind of method that the piezoelectric ceramic fibers of containing metal core is encapsulated.
2, technical scheme: in order to solve above-mentioned technical problem, the method for packing of containing metal core piezoelectric ceramic fibers of the present invention comprises the following steps:
Step 1: respectively the metal-cored electrode of containing metal core piezoelectric ceramic fibers is connected with two ports of external terminal with outer coating electrode with conducting resinl;
Step 2: earlier with the whether conducting of universal instrument test electrode, if it is good that conducting then illustrate is connected between electrode and the external terminal, then, protection glue at the junction of the metal-cored electrode of containing metal core piezoelectric ceramic fibers and external terminal port coating one deck guard electrode joint, the fixing relative position of external terminal and containing metal core piezoelectric ceramic fibers simultaneously is to make things convenient for the carrying out of subsequent step;
Step 3: adjuster placed in the middle is mounted in the fiber protection tube, and the containing metal core piezoelectric ceramic fibers with step 2 penetrates fiber protection tube inside again, guarantee when penetrating that piezoelectric fabric is not connected with external terminal an end exceed fiber protection tube 1-2 millimeter; The external diameter of fiber protection tube is generally the 1-4 millimeter;
Described adjuster placed in the middle is made by the embedding of insulation casting glue and is cooperated with described fiber protection tube, and adjuster placed in the middle can be contained in the fiber protection tube; Adjuster inside placed in the middle is provided with the through hole that holds described containing metal core piezoelectric ceramic fibers; described through hole is used for holding the fiber protection tube for one section; another section that communicates with it is used for holding piezoelectric ceramic fibers itself, and the diameter of two sections through holes adapts with the diameter of fiber protection tube respectively.
Adjuster placed in the middle is the servicing unit of controlling the axiality of piezoelectric ceramic fibers and fiber protection tube; its form is varied; can be T type hole circle cylinder, straight hole cylinder etc.; need select according to the size of the fiber protection tube that uses; it is to be made by silica gel or other casting glue embeddings in addition; its glue model should be identical with the glue model of the inner embedding of fiber protection tube, is conducive to that adjuster placed in the middle and fibrous protective layer combine together after the embedding.
Step 4: insulation casting glue, cold curing 8-24 hour, the containing metal core piezoelectric ceramic fibers that obtains encapsulating are filled in junction and fiber protection tube port at the junction of metal-cored electrode and external terminal, outer coating electrode and external terminal; In order to guarantee packaging effect, can in the fiber protection tube, fill the insulation casting glue simultaneously.
Among the present invention; the junction of the junction of metal-cored electrode and external terminal, outer coating electrode and external terminal and fiber protection tube port are filled the insulation casting glue and are solidified the back and form bare terminal end; purpose is that the piezoelectric fabric after the encapsulation for convenience in use can be installed on other instruments easily; in addition according to different installation requirements; the bare terminal end embedding can also be become different shape and size; as circle, ellipse, square, rectangle etc.
The fiber protection tube can protect piezoelectric fabric to avoid the infringement of external force effectively, when to wherein filling casting glue, suppresses the bending motion of piezoelectric fabric.The internal diameter of fiber protection tube is at the 0.6-3.8 millimeter, and external diameter is at the 1-4 millimeter.The interior external diameter of change fiber protection tube can change the bondline thickness between piezoelectric fabric and the fiber protection tube.The model that changes casting glue can embedding goes out the glue-line of different modulus of elasticity.
External terminal is that the metal-cored electrode of piezoelectric fabric and skin are coated with the device that electrode is drawn, be generally two respectively with metal-cored electrode and the lead that links to each other of coating electrode, like this can be easily the power supply of outer room, instrument etc. be connected with piezoelectric fabric, external terminal also can adopt other different forms according to different connection requests, as plug, jack etc., external terminal also can arrange an insulation spacer with the piezoelectric fabric electrode nipple.
In addition, when the embedding bare terminal end, can adopt the embedding device, it controls the shape and size of bare terminal end as mould, and Mold Making becomes different shapes, just can obtain difform bare terminal end, embedding device itself is made up of two parts, encapsulating die bearing and encapsulating die.
3, beneficial effect: the method for packing of the containing metal core piezoelectric ceramic fibers of the technical program, have realize piezoelectric fabric safely, make things convenient for wiring, conveniently install, the function of clamping, overcome frangibility in the piezoelectric fabric use, difficult, the difficult shortcoming of clamping of lead-in wire.Packaging technology is simple simultaneously, and lower cost for material is for the piezoelectric fabric extensive use provides convenience.
Description of drawings
Fig. 1 is the schematic diagram of the method for packing of containing metal core piezoelectric ceramic fibers of the present invention;
Fig. 2 is embedding apparatus structure schematic diagram;
Fig. 3 is controller structure schematic diagram placed in the middle, and wherein a is the adjuster placed in the middle of T type hole circle cylinder body shape, and b is the adjuster placed in the middle of straight hole cylindrical shape.
Embodiment
Embodiment one:
Step 1: as shown in Figure 1, reserve one section metal-cored electrode 1 at piezoelectric ceramic fibers one end of containing metal core, external terminal is two leads and is fixed on the insulation spacer that insulation spacer is of a size of 5mm * 2mm * 0.1mm, lead is put on the insulation spacer correct position fixes with glue; Respectively the metal-cored electrode 1 of piezoelectric ceramic fibers is connected with two leads with outer coating electrode 2 with conducting resinl, fiber electrode is caused on the lead;
Step 2: with the whether conducting of universal instrument test electrode, at the junction coating one deck AB glue of piezoelectric ceramic fibers electrode with lead, insulation spacer, guard electrode joint, the relative position of while fixing cord, insulation spacer and piezoelectric ceramic fibers;
Step 3: fiber protection tube 3 is selected internal diameter 0.6mm, the precision metallic pipe of external diameter 1mm; Shown in Fig. 3 a, adjuster 4 corresponding T type hole circle cylinder, its big bore dia 1mm, length 4mm, hole diameter 0.2mm, the length 2mm of selecting placed in the middle.Adjuster placed in the middle is installed to fiber protection tube 3 one ends, the fiber protection tube is inserted in the macropore of T type hole circle cylinder.Again piezoelectric ceramic fibers is penetrated fiber protection tube inside, guarantee when penetrating that the end that piezoelectric fabric does not draw electrode exceeds fiber protection tube 1-2 millimeter, and the piezoelectric fabric that exposes penetrates in the aperture of T type hole circle cylinder;
Step 4: as shown in Figure 2, two parts of embedding device are respectively installed to position suitable on the fiber protection tube 3, encapsulating die bearing internal diameter 1mm, upper end external diameter 3.8mm, lower end external diameter 2mm, encapsulating die internal diameter 3.8mm, external diameter 4mm.Fill 906 types insulation casting glue, cold curing 24 hours at the encapsulating die inner chamber;
Step 5: after the casting glue of waiting to insulate solidifies fully, remove embedding device and the adjuster placed in the middle that need not keep, the piezoelectric ceramic fibers that obtains encapsulating, profile is as shown in Figure 4.
Embodiment two:
Step 1: as shown in Figure 1, piezoelectric ceramic fibers one end at the containing metal core is reserved metal-cored electrode 1, external terminal is that two lead fixed are on insulation spacer, insulation spacer is of a size of 5mm * 2mm * 0.1mm, lead is put on the insulation spacer correct position to be fixed with glue, respectively the metal-cored electrode 1 of piezoelectric ceramic fibers is connected with two leads with outer coating electrode 2 with conducting resinl, fiber electrode is caused on the lead;
Step 2: with the whether conducting of universal instrument test electrode, at the junction coating one deck AB glue of piezoelectric ceramic fibers electrode with lead, insulation spacer, guard electrode joint, the relative position of while fixing cord, insulation spacer and piezoelectric ceramic fibers;
Step 3: fiber protection tube 3 is selected internal diameter 1.8mm, the plastic rigid pipe of external diameter 2mm, and shown in Fig. 3 b, the adjuster 4 corresponding straight hole cylinders of selecting placed in the middle, its external diameter is 1.8mm, bore dia 0.2mm, length 3mm.Adjuster 4 placed in the middle is installed to fiber protection tube 3 one end inside, again piezoelectric ceramic fibers is passed adjuster 4 placed in the middle, penetrate fiber protection tube 3 inside, guarantee when penetrating that the end that piezoelectric fabric does not draw electrode exceeds fiber protection tube 1-2 millimeter, fill transparent silica gel to fiber protection tube inner chamber, at the other end adjuster placed in the middle is installed again;
Step 4: two parts with the embedding device are respectively installed to position suitable on the fiber protection tube as shown in Figure 2, encapsulating die bearing internal diameter 1mm, upper end external diameter 3.8mm, lower end external diameter 2mm, encapsulating die internal diameter 3.8mm, external diameter 4mm.Fill 906 types insulation casting glue, cold curing 24 hours at the encapsulating die inner chamber;
Step 5: after the insulation casting glue solidifies fully, remove the embedding device that need not keep, the piezoelectric ceramic fibers that obtains encapsulating, profile is as shown in Figure 4.
Embodiment three:
Step 1: as shown in Figure 1, reserve metal-cored electrode 1 at piezoelectric ceramic fibers one end, external terminal is that two lead fixed are on insulation spacer, insulation spacer is of a size of 5mm * 2mm * 0.1mm, lead is put on the insulation spacer correct position to be fixed with glue, respectively the metal-cored electrode 1 of piezoelectric ceramic fibers is connected with two leads with outer coating electrode 2 with conducting resinl, fiber electrode is caused on the lead;
Step 2: with the whether conducting of universal instrument test electrode, at the junction coating one deck AB glue of piezoelectric ceramic fibers electrode with lead, insulation spacer, guard electrode joint, the relative position of while fixing cord, insulation spacer and piezoelectric ceramic fibers;
Step 3: fiber protection tube 3 is selected internal diameter 3.8mm, the plastic rigid pipe of external diameter 4mm, and shown in Fig. 3 b, adjuster 4 corresponding straight hole cylinder, its bore dia 0.2mm, the length 3mm of selecting placed in the middle.Adjuster 4 placed in the middle is installed to fiber protection tube 3 inside.Adjuster 4 placed in the middle is divided into the long and short two part with fiber protection tube 3 inner chambers; again piezoelectric ceramic fibers is passed adjuster placed in the middle; penetrate fiber protection tube inside; guarantee when penetrating that the end that piezoelectric fabric does not draw electrode exceeds fiber protection tube 1-2 millimeter, piezoelectric fabric and external terminal, pad connector place just penetrate fiber protection tube inside.Minister's cavity is filled transparent silica gel in the fiber protection tube, and an end that exceeds the fiber protection tube at fiber is installed adjuster placed in the middle again;
Step 4: fill 906 types insulation casting glue, cold curing 24 hours to the inner short cavity body of fiber protection tube;
Step 5: after the insulation casting glue solidifies fully, the piezoelectric ceramic fibers that obtains encapsulating, profile is as shown in Figure 4.
Embodiment four:
Step 1: as shown in Figure 1, reserve metal-cored electrode 1 at piezoelectric ceramic fibers one end, external terminal is that two lead fixed are on insulation spacer, insulation spacer is of a size of 5mm * 2mm * 0.1mm, lead is put on the insulation spacer correct position to be fixed with glue, respectively the metal-cored electrode 1 of piezoelectric ceramic fibers is connected with two leads with outer coating electrode 2 with conducting resinl, fiber electrode is caused on the lead;
Step 2: with the whether conducting of universal instrument test electrode, at the junction coating one deck AB glue of piezoelectric ceramic fibers electrode with lead, insulation spacer, guard electrode joint, the relative position of while fixing cord, insulation spacer and piezoelectric ceramic fibers;
Step 3: fiber protection tube 3 is selected internal diameter 0.6mm, the precision metallic pipe of external diameter 1mm, and shown in Fig. 3 a, adjuster 4 corresponding T type hole circle cylinder, its big bore dia 1mm, length 4mm, hole diameter 0.2mm, the length 2mm of selecting placed in the middle.Adjuster 4 placed in the middle is installed to fiber protection tube 3 one ends, fiber protection tube 3 is inserted in the macropore of T type hole circle cylinder.Again piezoelectric ceramic fibers is penetrated fiber protection tube inside, guarantee when penetrating that the end that piezoelectric fabric does not draw electrode exceeds fiber protection tube 1-2 millimeter, and the piezoelectric fabric that exposes penetrates in the aperture of T type hole circle cylinder;
Step 4: as shown in Figure 2, two parts of embedding device are respectively installed to position suitable on the fiber protection tube 3, encapsulating die bearing internal diameter 1mm, the upper end is the square of 4mm * 4mm, and lower end external diameter 2mm, encapsulating die are square tube, inner chamber is the square of 4mm * 4mm, exocoel is the square of 4.2mm * 4.2mm, fills 906 types insulation casting glue, cold curing 24 hours at the encapsulating die inner chamber;
Step 5: after the insulation casting glue solidifies fully, remove embedding device and the adjuster placed in the middle that need not keep, the piezoelectric ceramic fibers that obtains encapsulating, profile is as shown in Figure 4.
Embodiment five:
Step 1: as shown in Figure 1, reserve metal-cored electrode 1 at piezoelectric ceramic fibers one end, external terminal is the circumscription socket that two conductions are arranged on the insulation spacer, insulation spacer is of a size of 5mm * 2mm * 0.1mm, respectively the metal-cored electrode 1 of piezoelectric ceramic fibers and outer coating electrode 2 are connected with conductive socket on the insulation spacer with conducting resinl, fiber electrode is caused on the lead;
Step 2: with the whether conducting of universal instrument test electrode, at the junction coating one deck AB glue of piezoelectric ceramic fibers electrode with lead, insulation spacer, guard electrode joint, the relative position of while fixing cord, insulation spacer and piezoelectric ceramic fibers;
Step 3: fiber protection tube 3 is selected internal diameter 3.8mm, the plastic rigid pipe of external diameter 4mm, and shown in Fig. 2 b, adjuster 4 corresponding straight hole cylinder, its bore dia 0.2mm, the length 3mm of selecting placed in the middle.Adjuster 4 placed in the middle is installed to fiber protection tube 3 inside.Adjuster 4 placed in the middle is divided into the long and short two part with fiber protection tube 3 inner chambers; again piezoelectric ceramic fibers is passed adjuster 4 placed in the middle; penetrate fiber protection tube 3 inside; guarantee when penetrating that the end that piezoelectric fabric does not draw electrode exceeds fiber protection tube 1-2 millimeter, piezoelectric fabric and external terminal, pad connector place just penetrate fiber protection tube inside.Minister's cavity is filled transparent silica gel in the fiber protection tube, and an end that exceeds the fiber protection tube at fiber is installed adjuster placed in the middle again;
Step 4: fill transparent silica gel, cold curing 8 hours to the inner short cavity body of fiber protection tube;
Step 5: after the insulation casting glue solidifies fully, the piezoelectric ceramic fibers that obtains encapsulating, profile is as shown in Figure 4.
Claims (9)
1. the method for packing of a containing metal core piezoelectric ceramic fibers is characterized in that, comprises the following steps:
Step 1: respectively the metal-cored electrode (1) of containing metal core piezoelectric ceramic fibers is connected with two ports of external terminal with outer coating electrode (2) with conducting resinl;
Step 2: at the protection glue of the junction of the metal-cored electrode of containing metal core piezoelectric ceramic fibers and external terminal port coating one deck guard electrode joint, the fixing relative position of external terminal and containing metal core piezoelectric ceramic fibers simultaneously;
Step 3: adjuster placed in the middle (4) is mounted in the fiber protection tube (3), containing metal core piezoelectric ceramic fibers with step 2 penetrates fiber protection tube (3) inside again, guarantee when penetrating that the end that containing metal core piezoelectric ceramic fibers is not connected with external terminal exceeds fiber protection tube (3) 1-2 millimeter, described adjuster placed in the middle (4) is made and the inner through hole that holds described containing metal core piezoelectric ceramic fibers that is provided with by the embedding of insulation casting glue, described through hole is used for holding fiber protection tube (3) for one section, another section that communicates with it is used for holding piezoelectric ceramic fibers itself, and the diameter of two sections through holes adapts with the diameter of fiber protection tube (3) respectively;
Step 4: fill the insulation casting glue with junction and fiber protection tube (3) port of external terminal at metal-cored electrode (1) and junction, the outer coating electrode (2) of external terminal; cold curing 8-24 hour, the containing metal core piezoelectric ceramic fibers that obtains encapsulating.
2. the method for packing of containing metal core piezoelectric ceramic fibers as claimed in claim 1 is characterized in that, in the step 4, fills the insulation casting glue simultaneously in fiber protection tube (3).
3. the method for packing of containing metal core piezoelectric ceramic fibers as claimed in claim 1 is characterized in that, described external terminal is two leads.
4. the method for packing of containing metal core piezoelectric ceramic fibers as claimed in claim 3 is characterized in that, described external terminal is fixed on the insulation spacer.
5. the method for packing of containing metal core piezoelectric ceramic fibers as claimed in claim 1 is characterized in that, described conducting resinl is AB glue.
6. the method for packing of containing metal core piezoelectric ceramic fibers as claimed in claim 1 is characterized in that, described insulation casting glue is 906 types insulation casting glue.
7. the method for packing of containing metal core piezoelectric ceramic fibers as claimed in claim 1 is characterized in that, described adjuster placed in the middle (4) is made by the embedding of insulation casting glue and cooperated with described fiber protection tube.
8. the method for packing of containing metal core piezoelectric ceramic fibers as claimed in claim 7 is characterized in that, described adjuster placed in the middle inside is provided with the through hole that holds described containing metal core piezoelectric ceramic fibers.
9. the method for packing of containing metal core piezoelectric ceramic fibers as claimed in claim 7 is characterized in that, described adjuster placed in the middle (4) is provided with mutual perforation and holds described containing metal core piezoelectric ceramic fibers respectively and the through hole of fiber protection tube (3).
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| CN104233579A (en) * | 2013-06-20 | 2014-12-24 | 扬州思必得仪器设备有限公司 | Cored piezoelectric fiber fabric |
| EP3399562B1 (en) * | 2015-12-28 | 2019-09-04 | Teijin Limited | Braided piezoelectric element, fabric-like piezoelectric element using braided piezoelectric element, and device using same |
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| WO2008053925A1 (en) * | 2006-11-01 | 2008-05-08 | National University Corporation Chiba University | Method for producing functional composite material |
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