CN101368989B - Tangential stress application component used for tangential piezoelectric strain constant d15 measurement - Google Patents
Tangential stress application component used for tangential piezoelectric strain constant d15 measurement Download PDFInfo
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- CN101368989B CN101368989B CN2007101204326A CN200710120432A CN101368989B CN 101368989 B CN101368989 B CN 101368989B CN 2007101204326 A CN2007101204326 A CN 2007101204326A CN 200710120432 A CN200710120432 A CN 200710120432A CN 101368989 B CN101368989 B CN 101368989B
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Abstract
The invention relates to a tangential force-adding device which is used in measuring tangential piezoelectric strain constant d15, the device comprises a polyhedron first press block and a second polyhedron press block, a pair of a force-adding end surfaces which add force to the sample being tested, and a connection end surface. The force-adding end surface is a pair of inclined planes, and a fixed angle between the inclined plane and the vertical direction is formed under the using status; a level end surface is arranged respectively on the first press block and the second press block, and a level top surface and bottom surface are relatively in parallel and opposite to each other, on which a hemispherical groove or screw is arranged respectively; an end surface on which the prestress can be applied is arranged on the first press block, the end surface and the inclined force-adding end surface of the first press block are in parallel; a shaft hole is arranged on the second press block, and the shaft hole and the inclined force-adding end surface of the second press block are in parallel along the horizontal direction; a fixing frame presents an inverted U shape or a closed-ring shape, a screw is arranged in the center of the upper beam of the fixing frame, and the fixing frame is fixed with the first press block or the second press block; and an adjustable bolt is fixed withthe screw which is arranged on the upper beam of the fixed frame in screwing way. The component has simple structure, convenient usage and wide application.
Description
Technical field
The present invention relates to a kind of measuring method of piezoelectric piezoelectric constant, particularly relate to and measure piezoelectric tangential piezoelectric strain constant (abbreviation d
15Piezoelectric constant) a kind of tangential stress application component that uses in.
Background technology
Piezoelectric constant is the important parameter that characterizes the piezoelectric piezoelectric property, mainly includes vertical piezoelectric strain constant d
33, horizontal piezoelectric strain constant d
31With tangential piezoelectric strain constant d
15Deng, for tangential piezoelectric strain constant d
15Measurement, adopted dynamic method to carry out that (concrete grammar can be referring to ieee standard: IEEE Standard on Piezoelectricity in the past, ANSI/IEEE Std.176-1987, national standard: GB/T3389.6-1997 piezoceramic material performance test methods, lengthy motion picture thickness-shear vibration mode formula), dynamic method is measured tangential piezoelectric strain constant d
15Being by behind the resonance and anti-resonance frequency of measuring the piezoelectricity tested sample, obtaining through calculating, is at present domestic and international normally used a kind of method.But dynamic method is a kind of indirect measurement method, and test process is loaded down with trivial details, calculation of complex, require to satisfy certain boundary condition in the measurement, limitation is big, can only measure the standard sample that satisfies given shape, specification and dimensional requirement (for example: dimension scale: length and width, thick be 12: 6: 1), so practicality is relatively poor.Owing to can not find in the past and a kind ofly desirable the piezoelectricity tested sample applied the method for tangential force, cause also not having at present a kind of similar quasi-static method to measure vertical piezoelectric strain constant d always
33With horizontal piezoelectric strain constant d
31Such measurement tangential piezoelectric strain constant d
15Simple and practical method, therefore seek a kind of simple and practical and can be directly to tangential piezoelectric strain constant d
15The method and apparatus of measuring is the technical barrier that present technique field personnel will break through.
Summary of the invention
The objective of the invention is to: for overcoming the piezoelectric of dynamic method measurement in the past d
15The piezoelectric constant test process is loaded down with trivial details, the defective of poor practicability, thus a kind of piezoelectric tangential piezoelectric strain constant d that is used to measure is provided
15Tangential stress application component, these parts are simple and practical, be easy to realize and satisfy tangential piezoelectric strain constant d
15The requirement of quasistatic measuring method and system.
The object of the present invention is achieved like this:
The tangential piezoelectric strain constant d that is used for provided by the invention
15The tangential stress application component that uses in the measurement (shown in Fig. 1 a and Fig. 1 b) comprises the first pressurizing block 1-01, the second pressurizing block 1-03 and a fixed frame 1-04; It is characterized in that, the described first pressurizing block 1-01 and the second pressurizing block 1-03 are polyhedron, an afterburning end face and a connection end face that the piezoelectricity tested sample is applied acting force is respectively arranged, described afterburning end face is a pair of inclined-plane, becoming a fixed angle, this fixed angle with vertical direction under the user mode is the 1-89 degree; The described first pressurizing block 1-01 upward and on the second pressurizing block 1-03 all has a horizontal end face, this horizontal end face is for connecting end face, the horizontal end face of the first pressurizing block 1-01 is called horizontal top surface under user mode, the horizontal end face of the second pressurizing block 1-03 is called horizontal bottom, and described horizontal top surface is parallel with the bottom surface and relative; On the horizontal bottom of the horizontal top surface of the first pressurizing block 1-01 and the second pressurizing block 1-03, open a hemispheric groove or screw respectively, described groove or screw concentric, the hemispheric groove that processes, automatic straightening when being used for longitudinal stress; Also have one and apply prestressed end face on the first pressurizing block 1-01, this face is parallel with the afterburning end face of the inclination on the first pressurizing block 1-01; Also be provided with an axis hole on the second pressurizing block 1-03, this axis hole is laterally parallel with the afterburning end face of the inclination on the second pressurizing block 1-03; Described fixed frame 1-04 is inverted u-shaped structure or closed annular structure, is equipped with a vertical threaded bore at the upper beam centre bit of fixed frame 1-04, and this fixed frame 1-04 and the first pressurizing block 1-01 or the second pressurizing block 1-03 fix; Screwhole spiro bonding on described adjusting bolt 1-06 and the fixed frame 1-04 crossbeam is fixed, be placed on as tested piezoelectric sample 1-02 between the afterburning face of inclination of the first pressurizing block 1-01 and the second pressurizing block 1-03, with fixed frame 1-04 rotate to the first pressurizing block 1-01 above the piezoelectricity tested sample 1-02 vertical direction on one side, rotating described adjusting bolt 1-06 clamps piezoelectricity tested sample 1-02 by the first pressurizing block 1-01 and the second pressurizing block 1-03, simultaneously it is applied the prestress of vertical direction, when the circle center line connecting direction along the first web member 1-07 and the second web member 1-08 applies acting force (longitudinal force F3) to tangential stress application component, piezoelectricity tested sample 1-02 will obtain along dip plane direction and two component (tangential forces F5 and vertical direction directed force F 1) of decompositing with the dip plane vertical direction, is along the component of dip plane direction and measures piezoelectricity tested sample d
15The necessary tangential forces of piezoelectric constant (referring to Fig. 1 c).
In above-mentioned technical scheme, also comprise an insulation sleeve 1-09 or an insulation spacer; Described insulation sleeve 1-09 is installed in the described special-purpose bolt 1-06 end of regulating, and also can substitute insulation sleeve 1-09 with insulation spacer 1-10, and described insulation spacer 1-10 is installed on the prestress face of the first pressurizing block 1-01 usually.
In above-mentioned technical scheme, also comprise the first web member 1-07 and the second web member 1-08, the described first web member 1-07 and the second web member 1-08 are a pair of cylindrical structure, one end has screw thread to be used to be installed in the horizontal top surface of the first pressurizing block 1-01 and the horizontal bottom of the second pressurizing block 1-03, the automatic straightening when end face of other end is used for longitudinal stress for the dome-type concave surface; The perhaps described first web member 1-07 and the second web member 1-08 also can have the end face of screw thread other end to have the dome-type concave structure for headbands such as circular platform type, square column types.
In above-mentioned technical scheme, the described first pressurizing block 1-01 is a trapezoidal-structure, and the second pressurizing block 1-03 is the triangular form structure; The perhaps described first pressurizing block 1-01 is the triangular form structure, and the second pressurizing block 1-03 is a trapezoidal-structure; Perhaps be trapezoidal-structure simultaneously, also can be other polygonal structure or even two dome-type structures, as long as they satisfy following three conditions: first: have the afterburning end face of pair of angled during use, the bevel angle of this afterburning end face that tilts is generally the 1-89 degree with vertical direction under user mode, be preferably the 30-60 degree; Second: have two horizontal end faces during use, this end face can be used for longitudinal register after web member is installed; The 3rd: when the second pressurizing block 1-03 had with the horizontal parallel axis hole of the afterburning end face that tilts, the first pressurizing block 1-01 had and the parallel prestress face of the afterburning end face of inclination; Or two pressurizing block all have and the parallel prestress face of afterburning end face that tilts.
In above-mentioned technical scheme, described fixed frame 1-04 is that two ends of inverted u-shaped structure, this fixed frame 1-04 respectively have an axis hole, and two mutual concentrics of axis hole; When the first pressurizing block 1-01 that uses is trapezoidal-structure, the second pressurizing block 1-03 is the triangular form structure; The perhaps described first pressurizing block 1-01 is the triangular form structure, and the second pressurizing block 1-03 is a trapezoidal-structure; Perhaps be trapezoidal-structure simultaneously; Axis hole aperture on the diameter of described stationary shaft 1-05 and the second pressurizing block 1-03, and the axis hole aperture on two ends of fixed frame 1-04 cooperatively interacts; The second pressurizing block 1-03 is fixed between two ends of fixed frame 1-04 by stationary shaft 1-05, and causing fixed frame 1-04 is that the center rotates on the second pressurizing block 1-03 with stationary shaft 1-05; Regulate to regulate bolt 1-06 by the first pressurizing block 1-01 and the second pressurizing block 1-03 to the prestress that piezoelectricity tested sample 1-02 applies vertical direction, it firmly is clipped between the afterburning face of two pressurizing block.
In above-mentioned technical scheme, when the fixed frame 1-04 of described closed annular structure is hollow structure, square type structure, circular ring type or oval ring-like fixed frame (with reference to figure 2b-2e); The first pressurizing block 1-01 and the second pressurizing block 1-03 are the polyhedron of the same structure that has the prestress face, piezoelectricity tested sample 1-02 is placed between the first pressurizing block 1-01 and the second pressurizing block 1-03, the prestress of one of them pressurizing block is regulated the end direction of bolt 1-06 in the face of the rotation of accurate described closed annular structure fixed frame 1-04 crossbeam or circumference and oval all upward installations, put into the fixed frame 1-04 of this described closed annular structure, rotation is regulated bolt 1-06 and by two pressurizing block the piezoelectricity tested sample is applied the prestress of vertical direction, and it is firmly clamped.
In above-mentioned technical scheme, when described fixed frame is a hollow or square type structure fixed frame 1-04b, the first pressurizing block 1-01 and the second pressurizing block 1-03 are the polyhedron of the same structure that has the prestress face, piezoelectricity tested sample 1-02 is placed between the afterburning face of the first pressurizing block 1-01 and the second pressurizing block 1-03, the prestress face of two pressurizing block is aimed at the inner face of two crossbeams of hollow or square type structure fixed frame 1-04b respectively, put into this described hollow or square type structure fixed frame 1-04b together, rotation is regulated bolt 1-06 and by two pressurizing block 1-01 and 1-03 the prestress that piezoelectricity tested sample 1-02 applies vertical direction is firmly clamped it.
In above-mentioned technical scheme, when described fixed frame is a circular ring type or elliptical ring fixed frame 1-04c, when 1-04d or 1-04e, on the annulus circumference arbitrarily a bit or the point on elliptical ring major and minor axis institute corresponding ellipse week open a vertical threaded bore, ecto-entad is installed one and is regulated bolt 1-06, the first pressurizing block 1-01 and the second pressurizing block 1-03 all adopt the polyhedron of the same structure that has the prestress face, after piezoelectricity tested sample 1-02 being placed between the afterburning face of the first pressurizing block 1-01 and the second pressurizing block 1-03, the prestress of one of them briquetting is gone up the end direction of the rotation adjusting bolt 1-06 that installs all or oval weeks in the face of director circle, put into this described circular ring type or oval ring-like fixed frame 1-04c together, in 1-04d or the 1-04e, rotation is regulated bolt 1-06 and by two pressurizing block 1-01 and 1-03 the prestress that piezoelectricity tested sample 1-02 applies vertical direction is firmly clamped it.
In above-mentioned technical scheme, handwheel or cylinder annular knurl structure that described adjusting bolt 1-06 one end is an easy operating, the other end is equipped with an insulation sleeve 1-09, so that when withstanding the first pressurizing block 1-01 and the second pressurizing block 1-03 and clamp piezoelectricity tested sample 1-02, guarantee that the first pressurizing block 1-01 is not short-circuited with the second pressurizing block 1-03, described in addition adjusting bolt 1-06 also can replace with " one " word or " ten " prefix plain screw 1-06a, operates with screwdriver.
In above-mentioned technical scheme, described insulation sleeve 1-09 can save, and increase an insulation spacer 1-10 or insulation course at the prestress face of the first pressurizing block 1-01, also can on the fixed frame crossbeam that contacts with pressurizing block, increase insulation spacer or insulation course guarantees that two first pressurizing block 1-01 and the 2nd 1-03 are not short-circuited.
Use the present invention and can provide tangential low frequency contribution power (referring to embodiment 1, embodiment 2 and embodiment 3), realize piezoelectric d the piezoelectricity tested sample
15The quasi-static method of tangential piezoelectric strain constant is measured, and designs and produces out simple and practical quasistatic d
15The tangential piezoelectric strain constant measuring system.Tangential stress application component of the present invention can directly carry on the one hand in the vertical piezoelectric strain constant measuring instrument of the widely used quasi-static method (patent that REFERENCE TO RELATED people was authorized on February 6th, 99 " the vertical piezoelectric strain constant measuring instrument of quasi-static method " at present, the patent No. is: on force application apparatus ZL97231420.2), measure the d of piezoelectricity tested sample
15Tangential piezoelectric strain constant (referring to embodiment 4); Can also carry directly on the other hand that (REFERENCE TO RELATED people in patent " horizontal piezoelectric strain constant measuring method of piezoelectric quasi-static method and system " the patent number of accepting of on November 30th, 2005 application is: on the force application apparatus 200510126225.2), measure the d of piezoelectricity tested sample in the horizontal piezoelectric strain constant measuring system of the piezoelectric quasi-static method that begins in recent years to come into operation
15Tangential piezoelectric strain constant (referring to embodiment 5).The invention has the advantages that:
Tangential stress application component provided by the invention is piezoelectricity tested sample tangential piezoelectric constant d
15The tangential force that institute must and was difficult to realize during quasi-static method was measured just can be converted to from the vertical low-frequency alternating power that is easy at present realize by fairly simple parts, so the feasible tangential piezoelectric constant d that is difficult to measure that generally believes in the past
15(because can only measure by dynamic method in the past, unlike vertical piezoelectric constant d
33, horizontal piezoelectric strain constant d
31, except the dynamic method measurement is arranged, also have static method and quasi-static method to measure) and simple and practical measuring method and measurement mechanism have been arranged, this tangential stress application component not only can be used for piezoelectric tangential piezoelectric strain constant d
15Measurement, can also be used for d
11The various piezoelectric d of other of=0
14, d
16, d
24, d
25, d
26, d
34, d
35, d
36Measurement Deng the tangential piezoelectric constant.
Tangential stress application component provided by the invention is simple in structure, and is easy to use.
Tangential stress application component applied range of the present invention can directly carry on the force application apparatus of the present vertical piezoelectric strain constant measuring instrument of widely used quasi-static method on the one hand, measures the d of piezoelectricity tested sample
15Tangential piezoelectric strain constant (referring to embodiment 4); Can also directly carry on the force application apparatus of the horizontal piezoelectric strain constant measuring system of piezoelectric quasi-static method that begins in recent years to come into operation on the other hand, measure the d of piezoelectricity tested sample
15Tangential piezoelectric strain constant (referring to embodiment 5).
Description of drawings
Describe tangential stress application component of the present invention in detail below in conjunction with drawings and Examples, wherein:
Fig. 1 a tangential stress application component structural representation of the present invention
Fig. 1 b tangential stress application component outside drawing of the present invention
Fig. 1 c tangential stress application component acting force of the present invention analysis chart
Inverted U stationary frame structure synoptic diagram in Fig. 2 a tangential stress application component of the present invention
Square type stationary frame structure synoptic diagram in Fig. 2 b tangential stress application component of the present invention
Circular ring type stationary frame structure synoptic diagram in Fig. 2 c tangential stress application component of the present invention
Perpendicular oval ring-like stationary frame structure synoptic diagram in Fig. 2 d tangential stress application component of the present invention
Horizontal oval ring-like stationary frame structure synoptic diagram in Fig. 2 e tangential stress application component of the present invention
The tangential stress application component synoptic diagram of square type stationary frame structure in Fig. 2 f embodiment of the invention 2
The tangential stress application component synoptic diagram of circular ring type stationary frame structure in Fig. 2 g embodiment of the invention 3
Force application apparatus and tangential stress application component structural representation in Fig. 3 embodiment of the invention 4
Force application apparatus and tangential stress application component structural representation in Fig. 4 embodiment of the invention 5
The drawing explanation:
1-01-first pressurizing block 1-02-piezoelectricity tested sample
1-03-second pressurizing block 1-04-fixed frame (inverted U)
1-04a-fixed frame (square type) 1-04b-fixed frame (circular ring type)
1-04c-fixed frame (perpendicular oval ring-like) 1-04d-fixed frame (horizontal oval ring-like)
1-05-stationary shaft 1-06-adjusting bolt
1-07-first web member 1-08-second web member
1-09-insulation sleeve 1-10-insulation spacer
2-01-last test probe 2-02-following test probe
Pop one's head on 2-03-insulated connecting piece 2-04-inner comparative sample
2-05-inner comparative sample 2-06-inner comparative sample is probe down
2-07-electromagnetic driver 2-08-vibration type piston
2-09-epoxy plate 2-10-housing
2-11-positioning sliding block 2-12-positioning guide rail
2-13-handwheel 2-14-gang socket
2-15-gang socket
Embodiment
Embodiment 1
With reference to figure 1a, Fig. 1 b and Fig. 2 a, make a piezoelectric d
15Tangential stress application component in the tangential piezoelectric strain constant quasi-static method measuring system.
Tangential stress application component in the present embodiment is made up of the first pressurizing block 1-01, the second pressurizing block 1-03, fixed frame 1-04, stationary shaft 1-05, adjusting bolt 1-06, the first web member 1-07, the second web member 1-08 and insulation sleeve 1-09, wherein above-mentioned part is made by metal material, for example: aluminium, copper, steel, stainless steel etc.; The section of the first pressurizing block 1-01 is tilted-putted trapezoidal-structure, the plane at place, base is the prestress face on this ladder type, the section of the second pressurizing block 1-03 is a right angle trigonometry type structure, at drift angle place one axis hole is arranged near its right angle, place, the first pressurizing block 1-01 bottom end face of trapezoidal-structure, constituted afterburning end face with the second pressurizing block 1-03 hypotenuse place end face of right angle trigonometry type structure to piezoelectricity tested sample 1-02, this reinforcing end face is the inclined-plane, with the pitch angle of vertical direction be 45 degree; The horizontal bottom (a right-angle side place end face of triangular form structure) of the horizontal top surface of the first pressurizing block 1-01 (a waist place end face of trapezoidal-structure) and the second pressurizing block 1-03 has screw, the first web member 1-07 and the second web member 1-08 are column type, and a headband bolt and the other end end face is the dome-type concave surface, two web members vertically concentric are installed in the screw respectively; Fixed frame 1-04 is an inverted U metal framework (with reference to figure 2a), its crossbeam center has screw, the adjusting bolt 1-06 ecto-entad that end has insulation sleeve 1-09 is installed in this, the end of two vertical beams of inverted U fixed frame 1-04 respectively has an axis hole along continuous straight runs concentric and matches with stationary shaft 1-05, the second pressurizing block 1-03 installs in the opening of inverted U fixed frame 1-04 by stationary shaft 1-05, and inverted U fixed frame 1-04 can rotate around the second pressurizing block 1-03; Piezoelectricity tested sample 1-02 is placed between the afterburning end face of inclination of the first pressurizing block 1-01 and the second pressurizing block 1-03, the crossbeam of inverted U fixed frame 1-04 is gone to the first pressurizing block 1-01 prestress face, one side, rotation is regulated bolt 1-06 it is applied prestress, by the first pressurizing block 1-01 and the second pressurizing block 1-03 piezoelectricity tested sample 1-02 is firmly clamped, when when the direction of the first web member 1-07 and the second web member 1-08 circle center line connecting applies vertical low frequency contribution power to the tangential stress application annex (with reference to figure 1c), just can obtain piezoelectricity tested sample 1-02 tangential piezoelectric strain constant d
15Quasi-static method is measured needed tangential low frequency contribution power.
Embodiment 2
With reference to figure 2b and Fig. 2 f, existing fixed frame (1-04a) with hollow or square type structure is an example, saves stationary shaft 1-05, forms a piezoelectric d
15Tangential stress application component in the tangential piezoelectric strain constant quasi-static method measuring system.
All to adopt section be trapezoidal-structure for the first pressurizing block 1-01 of tangential stress application component and the second pressurizing block 1-03 in the present embodiment, and the afterburning end face of the first pressurizing block 1-01 and the second pressurizing block 1-03 is the inclined-plane, with the pitch angle of vertical direction be 60 degree; On two pressurizing block, column type is housed respectively, and end face is the first web member 1-07 and the second web member 1-08 of dome-type concave surface, fixed frame (1-04a) upper beam centre bit in hollow or square type structure is equipped with a vertical threaded bore, adjusting bolt 1-06 passes this vertical threaded bore and contacts with pressurizing block, and this adjusting bolt 1-06 end is equipped with insulation sleeve 1-09, piezoelectricity tested sample 1-02 is placed between the afterburning end face of inclination of two pressurizing block, the prestress of the first pressurizing block 1-01 or the second pressurizing block 1-03 is in the face of the accurate end of regulating bolt 1-06, put into square type fixed frame (1-04a), regulate bolt 1-06 it is applied prestress, by two pressurizing block piezoelectricity tested sample 1-02 is firmly clamped, when the circle center line connecting direction along the first web member 1-07 and web member 1-08 applies the low frequency longitudinal force to tangential stress application component, just can obtain piezoelectricity tested sample 1-02d
15The tangential piezoelectric strain constant quasi-static method is measured needed tangential low frequency contribution power.
Embodiment 3
With reference to figure 2g, existing fixed frame 1-04c with cirque structure is an example, saves stationary shaft 1-05, regulates bolt 1-06 with the plain screw 1-06a replacement of " one " word or " ten " prefix, forms a piezoelectric d
15Tangential stress application component in the tangential piezoelectric strain constant quasi-static method measuring system.
The first pressurizing block 1-01, the second pressurizing block 1-03 in the present embodiment are trapezoidal-structure, and it is the first web member 1-07 and the second web member 1-08 of dome-type concave surface that column type and end face are housed respectively; Ecto-entad is equipped with the plain screw 1-06a of " one " word or " ten " prefix on the circumference of the fixed frame 1-04c of cirque structure, and its end is not installed insulation sleeve 1-09, and replaces with insulation spacer 1-10; Piezoelectricity tested sample 1-02 is placed between the first pressurizing block 1-01 and the second pressurizing block 1-03, the prestress of the first pressurizing block 1-01 or the second pressurizing block 1-03 is in the face of the end of accurate plain screw 1-06a, put into the annular fixed frame, 1-06a firmly clamps it by the rotation plain screw, when the circle center line connecting direction along the first web member 1-07 and the second web member 1-08 applies the low frequency longitudinal force to tangential stress application component, just can obtain piezoelectricity tested sample 1-02d
15The tangential piezoelectric strain constant quasi-static method is measured needed tangential low frequency contribution power.
The first pressurizing block 1-01, the second pressurizing block 1-03 in the present embodiment, it can be a polyhedron, as long as they satisfy following three conditions: first: have the afterburning end face of pair of angled during use, the bevel angle of this afterburning end face that tilts is generally the 1-89 degree with vertical direction under user mode, be preferably the 30-60 degree; Second: have two horizontal end faces during use, this end face can be used for longitudinal register after web member is installed; The 3rd: when the second pressurizing block 1-03 had with the horizontal parallel axis hole of the afterburning end face that tilts, the first pressurizing block 1-01 had and the parallel prestress face of the afterburning end face of inclination; Or two pressurizing block all have and the parallel prestress face of afterburning end face that tilts.
Embodiment 4
With reference to figure 3, make a present embodiment and carry at the vertical piezoelectric strain constant measuring instrument of quasi-static method (abbreviation: " quasistatic d by tangential stress application component
33Measuring instrument ") in piezoelectric quasi-static method d on the force application apparatus platform
15The tangential piezoelectric strain constant measuring system.
Being about to tangential stress application component of the present invention is installed in the patent No. and is: on the force application apparatus in ZL97231420.2 " the vertical piezoelectric strain constant measuring instrument of quasi-static method ", make former quasistatic d
33Measuring instrument increases d
15The measurement function of tangential piezoelectric strain constant, its tangential stress application component can be any form among embodiment 1, embodiment 2 and the embodiment 3, now adopt the tangential stress application component of embodiment 1 form to be applied in the present embodiment.
Embodiment 5
With reference to figure 4, make a present embodiment and carry at the horizontal piezoelectric strain constant measuring instrument of quasi-static method (abbreviation: " quasistatic d by tangential stress application component
31Measuring instrument ") in piezoelectric quasi-static method d on the force application apparatus platform
15The tangential piezoelectric strain constant measuring system.
Being about to tangential stress application component of the present invention is installed in the patent number of accepting and is: on the force application apparatus in 200510126225.2 " horizontal piezoelectric strain constant measuring method of piezoelectric quasi-static method and the systems ", make former quasistatic d
31Measuring instrument increases d
15The measurement function of tangential piezoelectric strain constant, its tangential stress application component can be any form among embodiment 1, embodiment 2 and the embodiment 3, now adopt the tangential stress application component of embodiment 3 forms to be applied in the present embodiment.
Claims (7)
1. one kind is used for tangential piezoelectric strain constant d
15The tangential stress application component that uses in the measurement comprises first pressurizing block (1-01), second pressurizing block (1-03) and a fixed frame (1-04); It is characterized in that, described first pressurizing block (1-01) and second pressurizing block (1-03) are polyhedron, an afterburning end face and a connection end face that the piezoelectricity tested sample is applied acting force is respectively arranged, described afterburning end face is a pair of inclined-plane, becoming a fixed angle, this fixed angle with vertical direction under the user mode is the 1-89 degree; Described first pressurizing block (1-01) upward and on second pressurizing block (1-03) all has a horizontal end face, this horizontal end face is for connecting end face, the horizontal end face of first pressurizing block (1-01) is called horizontal top surface under user mode, the horizontal end face of second pressurizing block (1-03) is called horizontal bottom, and described horizontal top surface is parallel with horizontal bottom and relative; On the horizontal bottom of the horizontal top surface of first pressurizing block (1-01) and second pressurizing block (1-03), open a hemispheric groove or screw respectively, described groove or screw concentric; Upward also have one in first pressurizing block (1-01) and apply prestressed end face, it is parallel with the afterburning end face of the inclination on first pressurizing block (1-01) that this applies prestressed end face; Also be provided with an axis hole on second pressurizing block (1-03), this axis hole is laterally parallel with the afterburning end face of the inclination on second pressurizing block (1-03); Described fixed frame (1-04) is inverted u-shaped structure or closed annular structure, is equipped with a vertical threaded bore at the crossbeam centre bit of fixed frame (1-04), and this fixed frame (1-04) fixes with first pressurizing block (1-01) or second pressurizing block (1-03); Vertical threaded bore on adjusting bolt (1-06) and fixed frame (1-04) crossbeam screws togather fixing, and piezoelectricity tested sample (1-02) is placed between the afterburning face of inclination of first pressurizing block (1-01) and second pressurizing block (1-03);
Described tangential stress application component also comprises first web member (1-07) and second web member (1-08), described first web member (1-07) and second web member (1-08) are a pair of cylindrical structure, one end has screw thread to be used to be installed in the horizontal top surface of first pressurizing block (1-01) and the horizontal bottom of second pressurizing block (1-03), and the end face of other end is the dome-type concave surface; Perhaps described first web member (1-07) and second web member (1-08) are circular platform type or square column type, and a headband has screw thread, and the end face of other end has the dome-type concave structure.
2. the tangential piezoelectric strain constant d that is used for according to claim 1
15The tangential stress application component that uses in the measurement; It is characterized in that, also comprise an insulation sleeve (1-09), an end of described adjusting bolt (1-06) is the handwheel or the cylinder annular knurl structure of easy operating, and the other end is equipped with described insulation sleeve (1-09).
3. the tangential piezoelectric strain constant d that is used for according to claim 1
15The tangential stress application component that uses in the measurement; It is characterized in that described first pressurizing block (1-01) is a trapezoidal-structure, second pressurizing block (1-03) is the triangular form structure; Perhaps described first pressurizing block (1-01) is the triangular form structure, and second pressurizing block (1-03) is a trapezoidal-structure; Perhaps be trapezoidal-structure simultaneously, or other polygonal structure.
4. the tangential piezoelectric strain constant d that is used for according to claim 1
15The tangential stress application component that uses in the measurement; It is characterized in that described fixed frame (1-04) is that two ends of inverted u-shaped structure, this fixed frame (1-04) respectively have an axis hole, and two mutual concentrics of axis hole; When first pressurizing block of using (1-01) is trapezoidal-structure, second pressurizing block (1-03) is the triangular form structure; Perhaps described first pressurizing block (1-01) is the triangular form structure, and second pressurizing block (1-03) is a trapezoidal-structure; Perhaps be trapezoidal-structure simultaneously; Described tangential stress application component also comprises stationary shaft (1-05), the axis hole aperture on the diameter of described stationary shaft (1-05) and second pressurizing block (1-03), and the axis hole aperture on two ends of fixed frame (1-04) cooperatively interacts; Second pressurizing block (1-03) is fixed between two ends of fixed frame (1-04) by stationary shaft (1-05), and causing fixed frame (1-04) is that rotation is gone up in second pressurizing block (1-03) in the center with stationary shaft (1-05); Regulate to regulate bolt (1-06) and piezoelectricity tested sample (1-02) is applied the prestress of vertical direction, it firmly is clipped between the afterburning end face of two pressurizing block by first pressurizing block (1-01) and second pressurizing block (1-03).
5. the tangential piezoelectric strain constant d that is used for according to claim 1
15The tangential stress application component that uses in the measurement; It is characterized in that the fixed frame of described closed annular structure (1-04) is a square type structure fixed frame; First pressurizing block (1-01) and second pressurizing block (1-03) used are trapezoidal-structure simultaneously, piezoelectricity tested sample (1-02) is placed between first pressurizing block (1-01) and second pressurizing block (1-03), the prestress face of two pressurizing block is aimed at the inner face of two crossbeams of the fixed frame (1-04) of described closed annular structure respectively, is placed in the fixed frame (1-04) of described closed annular structure.
6. the tangential piezoelectric strain constant d that is used for according to claim 1
15The tangential stress application component that uses in the measurement; It is characterized in that, the fixed frame of described closed annular structure (1-04) is circular ring type or oval ring-like fixed frame (1-04b), on the circumference of this fixed frame (1-04b) more arbitrarily, or the elliptical ring major and minor axis the point on corresponding oval week open a vertical threaded bore, regulate bolt (1-06) and pass vertical threaded bore, piezoelectricity tested sample (1-02) is placed between first pressurizing block (1-01) and second pressurizing block (1-03) and becomes one, put into circular ring type or oval ring-like fixed frame (1-04) together, rotation is regulated bolt (1-06) by two pressurizing block (1-01,1-03) prestress that piezoelectricity tested sample (1-02) is applied vertical direction is firmly clamped it.
7. the tangential piezoelectric strain constant d that is used for according to claim 1
15The tangential stress application component that uses in the measurement; It is characterized in that described adjusting bolt (1-06) is " one " word or " ten " word bolt.
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| CN2007101204326A CN101368989B (en) | 2007-08-17 | 2007-08-17 | Tangential stress application component used for tangential piezoelectric strain constant d15 measurement |
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|---|---|---|---|---|
| US6111818A (en) * | 1997-04-28 | 2000-08-29 | Materials Systems Inc. | Low voltage piezoelectric actuator |
| CN1979184A (en) * | 2005-11-30 | 2007-06-13 | 中国科学院声学研究所 | Transverse piezoelectric strain constant measuring method by piezoelectric material quasistatic method and system thereof |
| CN201215575Y (en) * | 2008-06-03 | 2009-04-01 | 中国科学院声学研究所 | Tangential reinforcement part for circular tube type piezo-electric element D15 piezoelectric constant measurement |
| CN101430352A (en) * | 2007-09-24 | 2009-05-13 | 中国科学院声学研究所 | Measuring system and method for tangential piezoelectric strain constant of piezoelectric material by quasi-static method |
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2007
- 2007-08-17 CN CN2007101204326A patent/CN101368989B/en not_active Expired - Fee Related
Patent Citations (4)
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|---|---|---|---|---|
| US6111818A (en) * | 1997-04-28 | 2000-08-29 | Materials Systems Inc. | Low voltage piezoelectric actuator |
| CN1979184A (en) * | 2005-11-30 | 2007-06-13 | 中国科学院声学研究所 | Transverse piezoelectric strain constant measuring method by piezoelectric material quasistatic method and system thereof |
| CN101430352A (en) * | 2007-09-24 | 2009-05-13 | 中国科学院声学研究所 | Measuring system and method for tangential piezoelectric strain constant of piezoelectric material by quasi-static method |
| CN201215575Y (en) * | 2008-06-03 | 2009-04-01 | 中国科学院声学研究所 | Tangential reinforcement part for circular tube type piezo-electric element D15 piezoelectric constant measurement |
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| JP特开2004-307320A 2004.11.04 |
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