CN116400140A - Piezoelectric coefficient suitable for polymer thick filmd31 Measuring device of (2) - Google Patents
Piezoelectric coefficient suitable for polymer thick filmd31 Measuring device of (2) Download PDFInfo
- Publication number
- CN116400140A CN116400140A CN202310239397.9A CN202310239397A CN116400140A CN 116400140 A CN116400140 A CN 116400140A CN 202310239397 A CN202310239397 A CN 202310239397A CN 116400140 A CN116400140 A CN 116400140A
- Authority
- CN
- China
- Prior art keywords
- thick film
- piezoelectric
- clamping block
- pressing
- clamping
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229920000642 polymer Polymers 0.000 title claims abstract description 26
- 239000000919 ceramic Substances 0.000 claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims description 30
- 239000010959 steel Substances 0.000 claims description 30
- 239000004677 Nylon Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 2
- 101100425816 Dictyostelium discoideum top2mt gene Proteins 0.000 claims 1
- 101150082896 topA gene Proteins 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 22
- 238000000034 method Methods 0.000 abstract description 8
- 238000005259 measurement Methods 0.000 abstract description 5
- 238000013461 design Methods 0.000 abstract description 2
- 238000011056 performance test Methods 0.000 abstract description 2
- 239000010963 304 stainless steel Substances 0.000 description 5
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 229910010293 ceramic material Inorganic materials 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000002033 PVDF binder Substances 0.000 description 2
- 230000009975 flexible effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000003985 ceramic capacitor Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009931 pascalization Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
- G01R27/2688—Measuring quality factor or dielectric loss, e.g. loss angle, or power factor
- G01R27/2694—Measuring dielectric loss, e.g. loss angle, loss factor or power factor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
- G01N3/303—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated only by free-falling weight
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/12—Measuring rate of change
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
- G01R27/2605—Measuring capacitance
Abstract
The invention relates to the field of performance test of piezoelectric materials, in particular to a piezoelectric coefficient suitable for polymer thick filmsd 31 The measuring device comprises an oscilloscope, piezoelectric ceramics, a clamping table, a clamping assembly and a pressing assembly; the clamping assembly comprises an upper clamping block and a lower connecting assembly; the upper clamping block is arranged on the clamping table, the lower connecting component is positioned at the lower side of the upper clamping block, and the upper end of the lower connecting component is connected with the lower end of the upper clamping block through a thick film; the pressing assembly comprises a pressing frame and an active pressing pair; the active pressing pair is arranged at the lower end of the pressing frame; the upper end part of the pressing frame is connected with the lower end part of the lower connecting component through piezoelectric ceramics; the oscillograph, the piezoelectric ceramic and the thick filmThe invention designs the structure by connecting wires, and uses the piezoelectric strain constant of known materials by a comparison methodd 33 Indirectly solving piezoelectric strain coefficient of thick film material to be measuredd 31 The method has the characteristics of low cost, simplicity and convenience in operation, strong repeatability, accurate measurement data and the like.
Description
Technical Field
The invention relates to the field of performance test of piezoelectric materials, in particular to a piezoelectric coefficient suitable for a polymer thick filmd 31 Is provided.
Background
The high polymer piezoelectric thick film element has the characteristics of light weight, flexible property, sensitivity, easy matching with water medium and the like, so that the large-area surface element hydrophone developed by adopting the thick film element has the capabilities of vibration resistance, impact resistance, stable acousto-electric performance under high hydrostatic pressure and high wave number noise resistance, can be widely used for replacing the piezoelectric ceramic point element hydrophone, and improves the war technical index of sonar equipment from the source. The polymer piezoelectric thick film is taken as a typical organic high-molecular piezoelectric material and is a core sensitive unit of a face element hydrophone. The receiving sensitivity of the surface element hydrophone in water is mainly equal to the hydrostatic pressure piezoelectric voltage coefficient of the polymer thick film materialg h (g 33 +2g 31 ) Positive correlation, thus accurately obtaining polymer thick filmsg h Has important significance for the performance forecast of the surface element hydrophone.
Due to the piezoelectric voltage coefficient of thick film materialsg 33 (d 33 /ε 33 ) Andg 31 (d 31 /ε 33 ) Are obtained by the ratio of the piezoelectric coefficient to the dielectric constant in the corresponding direction. Currently aimed at piezoelectric coefficientd 33 And a dielectric constant epsilon 33 The test method is mature and can obtain accurate piezoelectric voltage coefficientg 33 . Due to piezoelectric coefficient of polymer thick film material in transverse length directiond 31 The absolute value is low, aboutd 33 One third of (3). Current materials for polymer thick filmsd 31 The measurement method of the (B) has large deviation in the test process generally, and thick film materials can not be obtained stably and effectivelyd 31 Is an accurate value of (a). The present invention is based on this backgroundAccording to the performance characteristics of the high polymer material, the designed scheme and the measuring device accurately and stably measure the piezoelectric coefficient of the polymer thick filmd 31 Has certain reference significance.
Disclosure of Invention
The invention provides a measuring device, which ensures that the transverse piezoelectric coefficient of a polymer thick film material is improved by reasonable structural designd 31 ) The measurement of the polymer piezoelectric thick film parameter sensor becomes simpler, more convenient and more reliable so as to meet the application requirement of the performance forecast of the surface element hydrophone on the measurement of the polymer piezoelectric thick film parameter.
In order to achieve the above purpose, the present invention provides the following technical solutions: piezoelectric coefficient suitable for polymer thick filmdThe measuring device comprises an oscilloscope, piezoelectric ceramics, a clamping table, a clamping assembly and a pressing assembly; the clamping assembly comprises an upper clamping block and a lower connecting assembly; the upper clamping block is arranged on the clamping table, the lower connecting component is positioned at the lower side of the upper clamping block, and the upper end of the lower connecting component is connected with the lower end of the upper clamping block through a thick film; the pressing assembly comprises a pressing frame and an active pressing pair; the active pressing pair is arranged at the lower end of the pressing frame; the upper end part of the pressing frame is connected with the lower end part of the lower connecting component through piezoelectric ceramics; the oscillograph is connected with the piezoelectric ceramic and the thick film through leads.
Preferably, the active pressing pair comprises a guide rail line, a small steel ball and a large steel ball; the head end of the guide rail line is connected with the lower end of the pressing frame, and the tail end radially penetrates through the small steel ball and is fixedly connected with the large steel ball; the small steel ball slides relative to the large steel ball on the guide rail line.
Preferably, the lower connecting assembly comprises a lower clamping block and an outer buckle; the lower end of the lower clamping block is detachably connected with the upper end of the outer buckle; the thick film is arranged between the upper clamping block and the lower clamping block.
Preferably, the upper clamping block and the lower clamping block are composed of two symmetrical clamping plates; the two clamping plates are connected through pins and bolts.
Preferably, a first groove is formed in the lower wall of the outer fastener; the upper end part of the pressing frame is provided with a second groove; the outer buckle and the pressing frame form a chain ring structure, and the position of the first groove corresponds to the position of the second groove.
Preferably, a first connecting hole is formed at the lower end of the outer clip; the pressing frame is provided with a second connecting hole; the second connecting hole is positioned on the upper side of the second groove.
Preferably, the size of the piezoelectric ceramic is adapted to the size of the first recess and the size of the second recess.
Preferably, the outer buckle and the pressing frame are made of metal.
Preferably, the guide rail line is nylon wire or PE wire.
Preferably, the clamping table comprises a bottom plate, a supporting rod and an upper cover plate which are sequentially arranged from bottom to top; the upper clamping block is arranged on the upper cover plate; the big steel ball is positioned on the upper side of the bottom plate.
Compared with the prior art, the invention has the beneficial effects that: the measuring device uses the piezoelectric coefficient of known ceramic materiald 33 Solving the piezoelectric coefficient of the thick film material to be measured by a comparison methodd 31 The method has the advantages of simplicity and convenience in operation, strong repeatability, accurate measurement data and the like.
Drawings
FIG. 1 is a schematic diagram of a first embodiment of the present invention;
FIG. 2 is a schematic view of a clamping assembly according to the present invention;
FIG. 3 is a detailed schematic view of the clamping assembly of the present invention;
FIG. 4 is a schematic view of the underside structure of the clamping assembly of the present invention;
fig. 5 is a schematic structural view of the pressing assembly of the present invention.
In the figure: 1, a clamping table, a 101 bottom plate, 102 support rods and 103 upper cover plates;
2 clamping components, 201 upper clamping blocks, 202 lower clamping blocks, 203 outer buckles, 204 bolts, 205 pins, 2031 first grooves and 2032 first connecting holes;
3 a pressing component, 301 a pressing block, 302 a connecting rod, 303 an inner buckle, 304 a guide rail line, 305 a small steel ball, 306 a large steel ball, 3011 a second groove and 3012 a second connecting hole;
4 piezoelectric thick film and 5 piezoelectric ceramics.
Description of the embodiments
The following detailed description of the invention, taken in conjunction with the accompanying drawings, will provide those skilled in the art with a more readily understood understanding of how the invention may be practiced. While the present invention has been described in connection with the preferred embodiments thereof, these embodiments are set forth only and are not intended to limit the scope of the invention.
First embodiment: please refer to fig. 1-5 for a piezoelectric coefficient suitable for polymer thick filmsd 31 Comprising: the clamping device comprises a clamping table 1, a clamping assembly 2 and a pressing assembly 3; specifically, the measuring device is used for measuring the voltage amplitude change of the surfaces of the piezoelectric thick film 4 and the piezoelectric ceramic 5, and solving the piezoelectric coefficient of the thick film material by a comparison methodd 31 。
The clamping table 1 is composed of a bottom plate 101, a supporting rod 102 and an upper cover plate 103, and is made of 304 stainless steel. The bottom plate 101 has a length of 200mm, a width of 150mm and a thickness of 30mm, and has a screw hole of M16×1.5mm at the upper end for bolting with the upper end of the support bar 102. The supporting rod 102 is a cylinder with the diameter of 30mm and the height of 400mm, and the lower end of the supporting rod is fixedly connected with the bottom plate 101. The length of the upper cover plate 103 is 160mm, the width is 100mm, the height is 20mm, the middle position of the front end part of the upper cover plate is provided with a mounting groove, the mounting groove consists of an upper step and a lower step which are corresponding in position, wherein the depth of the upper step is 50mm, the length of the upper step is 31.5mm, the width of the upper step is 10mm, and the depth of the lower step is 50mm, the length of the lower step is 21.5mm, and the width of the lower step is 10mm.
As shown in fig. 2-4, the clamping assembly 2 comprises an upper clamping block 201, a lower clamping block 202, an outer clamping buckle 203, a plurality of bolts 204 and a plurality of pins 205; the upper clamping block 201 and the lower clamping block 202 are made of 304 # stainless steel materials, and the upper clamping block 201 and the lower clamping block 202 are composed of two symmetrical clamping plates; the clamping plate of the upper clamping block 201 has the length of 50mm, the width of 15.5mm and the height of 30mm, the bottom of the outer side is cut off to have the length of 10mm, the width of 5mm and the thickness of 30mm so as to facilitate the upper clamping block 201 to be installed in the installation groove of the upper cover plate 103; screw holes with the diameter phi of 6.5mm and pin holes with the diameter phi of 5mm are formed in the middle of the two clamping plates of the upper clamping block 201, and when the clamping plate is used, the two clamping plates of the upper clamping block 201 are positioned through the holes by pins, and then the two parts are screwed by bolts;
the clamping plates of the lower clamping block 202 are 20mm in length, 15mm in width and 40mm in thickness, threaded holes of M8 are formed in the middle parts of the two clamping plates 18mm away from the bottom end, and two positioning holes are formed in the upper parts of the two clamping plates; the same as the upper clamping block 201, two clamping plates of the lower clamping block 202 are firstly positioned through holes by pins, and then the two parts are screwed up by bolts; the middle parts of the two clamping plates are respectively provided with a threaded hole M5 at a position 6mm away from the bottom end, and the threaded holes M5 are used for accommodating bolts so as to realize the connection between the lower end of the lower clamping block 202 and the upper end of the outer buckle 203;
in the test, the upper end of the piezoelectric thick film 4 is clamped by the upper clamping block 201, and the lower end is clamped by the lower clamping block 202.
The outer clip 203 is made of 304 stainless steel. The outer buckle 203 is of a U-shaped structure, the length of the outer buckle 203 is 60mm, the width of the outer buckle 203 is 40.5mm, the thickness of the outer buckle is 15mm, and the hollow-out dimension of the inner side of the outer buckle 203 is 50mm, the width of the outer buckle is 30.5mm, and the thickness of the outer buckle is 15mm; the outer clip 203 is provided with a first groove 2031 and a first connection hole 2032; the first groove 2031 is positioned on the upper wall of the lower end part of the outer buckle 203, and the first groove 2031 has the dimensions of 9mm in length, 7mm in width and 2mm in thickness; the first connection hole 2032 is located at a lower wall of the lower end portion of the outer clip 203.
As shown in fig. 5, the pressing assembly 3 includes a pressing frame, a guide rail 304, a small steel ball 305, and a large steel ball 306; the guide rail line 304 radially penetrates through the small steel ball 305, the head end of the guide rail line 304 is fixedly connected with the lower end of the pressing frame, and the tail end of the guide rail line 304 is fixedly connected with the large steel ball 306; the small steel ball 305 can slide up and down on the guide rail line 304; further, the diameter phi of the guide rail line 304 is 0.1mm, and the length is 100mm; the small steel ball 305 and the large steel ball 306 are made of brass alloy materials, the diameter phi of the small steel ball 305 is 8mm, and a round hole with the diameter phi of 1.2mm is formed in the middle of the small steel ball 305 so as to facilitate the small steel ball 305 to slide along the guide track 305; the diameter phi of the large steel ball 306 is 24mm; during testing, steel ball 306 is positioned on the upper side of base plate 101.
In other embodiments, thinner, more flexible and smoother materials such as nylon wire, PE wire, etc. may be used for the rail wire 304.
The pressing frame consists of a pressing block 301, a connecting rod 302 and an inner buckle 303; the inner fastener 303 is supported by a 304 stainless steel material; the connecting rod 302 is made of 304 stainless steel material, and has a diameter phi of 5mm and a length of 50mm;
the inner clip 303 has a U-shaped structure, and the hollow inner side of the inner clip 303 has a length of 50mm, a width of 40mm and a thickness of 15mm, and the hollow inner side has a length of 45mm, a width of 30mm and a thickness of 15mm; two holes with diameter phi of 5mm are formed in the inner buckle 303 at the position 45mm away from the bottom end of the inner buckle and are used for erecting the connecting rod 11 and the pressing block 13, wherein the connecting rod 11 penetrates through the pressing block 13 and the pressing block 13 is positioned between two arms of the inner buckle 303, and the pressing block 301, the connecting rod 302 and the inner buckle 303 form a closed loop structure; a hole with the diameter phi of 1.6mm is formed in the middle of the bottom of the inner buckle 303 so as to facilitate the installation of the guide rail line 304;
the pressing block 301 is made of 304 stainless steel material, and has the length of 15mm, the width of 12mm and the thickness of 30mm; the lower end of the pressing block 301 is provided with a second groove 3011, and the side surface of the pressing block is provided with a second connecting hole 3012; the length of the second groove 3011 is 9mm, the width is 7mm, and the thickness is 2mm; the diameter Φ1.6mm of the second connection hole 3012.
During testing, the pressing frame is sleeved on the outer buckle 203, and forms a chain ring structure with the outer buckle 203, and at the moment, the position of the first groove 2031 corresponds to the position of the second connecting hole 3012 and is used for installing the piezoelectric ceramic 5; in other embodiments, the size of the first recess 2031 and the size of the second connection hole 3012 may be set according to the size of the piezoelectric ceramic 5.
In this example, piezoelectric thick film 4 is a piezoelectric homopolymer [ polyvinylidene fluoride (PVDF) ]]Material or piezoelectric copolymer [ P (VDF-TrFE)]The piezoelectric thick film 4 is prepared from the material, the thickness of the piezoelectric thick film 4 is 0.5mm, the total length of the piezoelectric thick film is 120mm, the length of a coated electrode is 100mm, and the width of the coated electrode is 10mm; the piezoelectric ceramics 5 ared 33 The standard component of the vibrator is prepared from PZT-4 piezoelectric ceramic material, and has the length of 9mm, the width of 7mm and the height of 20mm; in other embodiments, the dimensions of the piezoelectric thick film 4 and the dimensions of the piezoelectric ceramic 5 may be adjusted according to the conditions, depending on the test conditions.
When the measuring device is used, an oscilloscope is required to be arranged; specifically, the first connecting hole 2032 and the second connecting hole 3012 both accommodate wires, and the piezoelectric ceramic 5 is connected with an external oscilloscope through the wires and is used for recording the voltage change of the ceramic surface when impact occurs; for the piezoelectric thick film 4, two electrode surfaces of the piezoelectric thick film 4 are respectively connected with leads, so that the piezoelectric thick film 4 is connected with an external oscilloscope, and the voltage change of the surface of the piezoelectric thick film when impact occurs is recorded.
The working principle of the measuring device is that the impact force generated by the small steel ball falling from a certain height to strike the large steel ball is utilizedFImpact force hereFMainly by knowing capacitance, voltaged 33 The piezoelectric ceramic of the parameters is obtained, the pressure born by the piezoelectric ceramic is equivalent to the tensile force born by the piezoelectric thick film through the force conduction of the rigid structure of the device, and then the piezoelectric coefficient of the thick film material is calculated through measuring the surface capacitance, voltage amplitude and area parameters of the piezoelectric thick film and the piezoelectric ceramicd 31 。
In the present invention,d 33 the piezoelectric constant is defined as:
here the number of the elements is the number,A 1 is the stress area of the ceramic sample,C 1 a ceramic capacitor.
In the present invention, the piezoelectric coefficientd 31 The definition is as follows:
here the number of the elements is the number,A 2 is the stressed area of the piezoelectric thick film,B 2 the area for the charge generation for the piezoelectric thick film,C 2 is a piezoelectric thick film capacitor.
The measuring device uses the piezoelectric coefficient of known ceramic materiald 33 Solving the piezoelectric coefficient of the thick film material to be measured by a comparison methodd 31 The method has the advantages of simplicity and convenience in operation, strong repeatability, accurate measurement data and the like.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. Piezoelectric coefficient suitable for polymer thick filmd 31 The measuring device of (1) comprises an oscilloscope and piezoelectric ceramics, and is characterized in that: the clamping table (1), the clamping assembly (2) and the pressing assembly (3); the clamping assembly (2) comprises an upper clamping block (201) and a lower connecting assembly; the upper clamping block (201) is arranged on the clamping table (1), the lower connecting component is positioned at the lower side of the upper clamping block (201), and the upper end of the lower connecting component is connected with the lower end of the upper clamping block (201) through a thick film; the pressing assembly (3) comprises a pressing frame and an active pressing pair; the active pressing pair is arranged at the lower end of the pressing frame; the upper end part of the pressing frame is connected with the lower end part of the lower connecting component through piezoelectric ceramics; the oscillograph is connected with the piezoelectric ceramic and the thick film through leads.
2. A piezoelectric coefficient suitable for use in polymer thick film according to claim 1d 31 Is characterized in that: the active pressing pair comprises a guide rail line (304), a small steel ball (305) and a large steel ball (306); the head end of the guide rail line (304) is connected with the lower end of the pressing frame, and the tail end radially penetrates through the small steel ball (305) and is fixedly connected with the large steel ball (306); the small steel ball (305) slides on the guide rail line (304) relative to the large steel ball (306).
3. A piezoelectric coefficient suitable for use in polymer thick film according to claim 1d 31 Is characterized in that: the lower connecting component comprises a lower clamping block (202) and an outer clamping buckle (203); the lower end of the lower clamping block (202) is detachably connected with the upper end of the outer buckle (203); the thick film is arranged between an upper clamping block (201) and a lower clamping block (202).
4. A piezoelectric coefficient suitable for use in polymer thick film according to claim 3d 31 Is characterized in that: the upper clamping block (201) and the lower clamping block (202) are composed of two symmetrical clamping plates;the two clamping plates are connected through pins and bolts.
5. A piezoelectric coefficient suitable for use in polymer thick film according to claim 3d 31 Is characterized in that: a first groove (2031) is formed in the lower wall of the outer clamp (203); a second groove (3011) is formed in the upper end part of the pressing frame; the outer buckle (203) and the pressing frame form a chain ring structure, and the position of the first groove (2031) corresponds to the position of the second groove (3011).
6. A piezoelectric coefficient suitable for use in polymer thick film as claimed in claim 5d 31 Is characterized in that: the lower end of the outer clamp buckle (203) is provided with a first connecting hole (2032); the pressing frame is provided with a second connecting hole (3012); the second connection hole (3012) is located at an upper side of the second groove (3011).
7. A piezoelectric coefficient suitable for use in polymer thick film as claimed in claim 5d 31 Is characterized in that: the size of the piezoelectric ceramic is matched with the size of the first groove (2031) and the size of the second groove (3011).
8. A piezoelectric coefficient suitable for use in polymer thick film as claimed in claim 6d 31 Is characterized in that: the outer clamping buckle (203) and the pressing frame are made of metal.
9. A piezoelectric coefficient suitable for use in polymer thick film according to claim 2d 31 Is characterized in that: the guide rail wire (304) is nylon wire or PE wire.
10. A piezoelectric coefficient suitable for use in polymer thick film according to claim 2d 31 Is characterized in that: the clamping table (1) comprises a clamping table body from bottom to topA bottom plate (101), a supporting rod (102) and an upper cover plate (103) which are sequentially arranged on the upper part; the upper clamping block (201) is arranged on the upper cover plate (103); the big steel ball (306) is positioned on the upper side of the bottom plate (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310239397.9A CN116400140B (en) | 2023-03-14 | 2023-03-14 | Piezoelectric coefficient suitable for polymer thick filmd31 Measuring device of (2) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310239397.9A CN116400140B (en) | 2023-03-14 | 2023-03-14 | Piezoelectric coefficient suitable for polymer thick filmd31 Measuring device of (2) |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116400140A true CN116400140A (en) | 2023-07-07 |
| CN116400140B CN116400140B (en) | 2023-12-01 |
Family
ID=87013300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310239397.9A Active CN116400140B (en) | 2023-03-14 | 2023-03-14 | Piezoelectric coefficient suitable for polymer thick filmd31 Measuring device of (2) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116400140B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3954015A (en) * | 1975-07-17 | 1976-05-04 | The United States Of America As Represented By The Secretary Of The Navy | Method of determining piezoelectric constants of ceramic rings |
| CN2308072Y (en) * | 1997-12-19 | 1999-02-17 | 中国科学院声学研究所 | Instrument for measuring longitudinal piezoelectric strain constant by quasi-static method |
| DE102005006958A1 (en) * | 2005-02-16 | 2006-08-17 | Aixacct Systems Gmbh | Measuring method for determination of piezo-coefficient involves sample comprises piezoelectric material on which bending load is set out causes its bending which is measured and determines the charge quantity present on it |
| CN2890940Y (en) * | 2005-12-02 | 2007-04-18 | 中国科学院声学研究所 | d31 measuring system employing quasi-static state method |
| 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 |
| CN108414819A (en) * | 2018-04-01 | 2018-08-17 | 吉林大学 | A kind of passive current sensing means of piezoelectric type for duplex wire and method |
| US20200141990A1 (en) * | 2018-11-05 | 2020-05-07 | United Arab Emirates University | Electrical Extraction of Piezoelectric Constants |
| CN112236657A (en) * | 2018-07-06 | 2021-01-15 | 欧姆龙株式会社 | Strain sensor and tensile characteristic measuring method |
| CN113432772A (en) * | 2021-06-17 | 2021-09-24 | 中北大学 | High-sensitivity thin film sensor for measuring object surface shock wave and manufacturing method thereof |
-
2023
- 2023-03-14 CN CN202310239397.9A patent/CN116400140B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3954015A (en) * | 1975-07-17 | 1976-05-04 | The United States Of America As Represented By The Secretary Of The Navy | Method of determining piezoelectric constants of ceramic rings |
| CN2308072Y (en) * | 1997-12-19 | 1999-02-17 | 中国科学院声学研究所 | Instrument for measuring longitudinal piezoelectric strain constant by quasi-static method |
| DE102005006958A1 (en) * | 2005-02-16 | 2006-08-17 | Aixacct Systems Gmbh | Measuring method for determination of piezo-coefficient involves sample comprises piezoelectric material on which bending load is set out causes its bending which is measured and determines the charge quantity present on it |
| 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 |
| CN2890940Y (en) * | 2005-12-02 | 2007-04-18 | 中国科学院声学研究所 | d31 measuring system employing quasi-static state method |
| CN108414819A (en) * | 2018-04-01 | 2018-08-17 | 吉林大学 | A kind of passive current sensing means of piezoelectric type for duplex wire and method |
| CN112236657A (en) * | 2018-07-06 | 2021-01-15 | 欧姆龙株式会社 | Strain sensor and tensile characteristic measuring method |
| US20200141990A1 (en) * | 2018-11-05 | 2020-05-07 | United Arab Emirates University | Electrical Extraction of Piezoelectric Constants |
| CN113432772A (en) * | 2021-06-17 | 2021-09-24 | 中北大学 | High-sensitivity thin film sensor for measuring object surface shock wave and manufacturing method thereof |
Non-Patent Citations (3)
| Title |
|---|
| ISAKU KANNO等: "Piezoelectric properties of (K, Na)NbO 3 thin films deposited on (001)SrRuO 3/Pt/MgO substrates", 《 IEEE TRANSACTIONS ON ULTRASONICS, FERROELECTRICS, AND FREQUENCY CONTROL 》, pages 2562 * |
| 包定华等: "薄膜压电性能的测量方法", 《硅酸盐通报》, pages 18 - 22 * |
| 周嘉，黄宜平: "PZT 压电薄膜的压电系数d31的测量及其 微悬臂梁简谐振动模拟", 《复旦学报（自然科学版）》, pages 187 - 190 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116400140B (en) | 2023-12-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11056731B2 (en) | Modular, adaptable holders for sensors and battery cells for physical analysis | |
| US4090404A (en) | Apparatus and methods of detecting injection in a diesel engine | |
| CN100439929C (en) | Transverse piezoelectric strain constant measuring method by piezoelectric material quasistatic method and system thereof | |
| CN108871972B (en) | Flexible hinge micro-component bending test device with wide range and high precision | |
| CN107860504B (en) | Accurate dynamic thrust of appearance accuse engine measures calibration integrated device | |
| CN102364325B (en) | Method for testing bending fatigue reliability of low dimensional conducting material | |
| CN2890940Y (en) | d31 measuring system employing quasi-static state method | |
| CN111413198B (en) | Acoustic emission-resistivity-stress synchronous testing device and method for rock | |
| CN116400140B (en) | Piezoelectric coefficient suitable for polymer thick filmd31 Measuring device of (2) | |
| CN112697328A (en) | Ultrasonic residual stress detection system and measurement method | |
| CN210513071U (en) | Steel strand elongation detection device | |
| CN104729938A (en) | Electromechanical impedance method-based portable hardness detection structure and detection method thereof | |
| KR102011293B1 (en) | Probe fixing device for ultrasonic test instrument | |
| CN213181012U (en) | Clamping device for detecting Rockwell hardness of bridge clamping piece | |
| CN111551638B (en) | Method for measuring freeze-thaw wave velocity and deformation of low-temperature saturated rock in real time | |
| US3397572A (en) | Device for measuring stressstrain curve | |
| CN210833480U (en) | Digital display extensometer for bridge detection | |
| CN108252289B (en) | Device for independently calibrating side friction resistance of static sounding instrument | |
| CN110398449B (en) | Rock core holder and rock physical parameter testing device | |
| CN213986331U (en) | Zero-sound time calibration device for radial transducer system of non-metal ultrasonic detector | |
| CN101655430A (en) | Non-destructive testing experimental device of wood materials | |
| CN111537621A (en) | Device and method for ultrasonically detecting bolt stress | |
| CN112082678A (en) | Multi-degree-of-freedom self-adaptive stress detection probe clamp | |
| CN215093206U (en) | Fixture calibration device | |
| CN210426422U (en) | Cylindrical sample axial strain testing device based on LVDT sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |