Custom All Size Piezo Ceramics Cylinder for Acoustic Sensors

Product Description

                     Custom All Size Piezo Ceramics Cylinder for Acoustic Sensors


WuHan Piezohannas Tech.Co .,Ltd is a manufactuer of piezoelectric ceramics ,ultrasonic transducers with strong technology force.With a quality management system and research & development sector,our products are extensively used in most applications.



Piezo Ceramics Tube Description:


-Dimensions:Ø14mm×Ø11.6mm×10

-Material: PZT5A


Performance Parameter:


-Radial Frequency Fr: 68KHz ±2KHz
-Electromechanical coupling coefficient K31: >0.36
-Dielectric Loss tg δ: <2.00%
-Static capacitance Cs: 5868pF± 12.5%


Standard Size of Piezo Tube:


Diameter: 5.0 - 100mm
Wall thickness: 1 - 10mm
Height: 2.5 - 50mm



Soft PZT Material:


 

"Soft" PZT materials

The type of soft material

Properties



PSnN-5

PLiS-51

PZT-51

PZT-52

PZT-53

PZT-5H

PZT-5X

Dielectric Constant

ɛTr3


1600

2000

2200

2400

2600

3200

4500

Coupling factor

KP


0.6

0.62

0.62

0.63

0.64

0.68

0.7


K31


0.35

0.35

0.35

0.35

0.36

0.38

0.4


K33


0.68

0.7

0.68

0.7

0.7

0.76

0.77


Kt


0.5

0.52

0.5

0.5

0.5

0.52

0.53

Piezoelectric coefficient

d31

10-12m/v

-170

-197

-186

-204

-227

-275

-300


d33

10-12m/v

400

450

500

520

550

620

750


g31

10-3vm/n

-12

-11.1

-9.6

-9.8

-9.9

-9.7

-7.5


g33

10-3vm/n

28

25.4

25.6

24.5

23.9

22

18.8

Frequency coefficients

Np


2000

1920

1980

1980

1960

1900

1960


N1


1466

1407

1451

1451

1437

1393

1437


N3


1825

1925

1900

1900

1755

1550

1800


Nt


2100

2100

2150

2150

2150

2100

2200

Elastic compliance coefficient

Se11

10-12m2/n

16.6

18

16.7

17

17.4

18

19

Machanical quality factor

Qm


85

80

80

75

75

70

65











Dielectric loss factor

Tg δ

%

2

2

2

2

2

2

2

Density

ρ

g/cm3

7.5

7.5

7.6

7.6

7.6

7.5

7.5

Curie Temperature

Tc

°C

350

345

270

270

270

230

165

Young's modulus

YE11

<109N/m2

60

56

60

59

57.5

56

53

Poison Ratio



0.36

0.36

0.36

0.36

0.36

0.36

0.39


Acoustic Sensors Application:


Acoustic wave sensors are so named because their detection mechanism is a mechanical, or acoustic, wave. As the acoustic wave propagates through or on the surface of the material, any changes to the characteristics of the propagation path affect the velocity and/or amplitude of the wave. Changes in velocity can be monitored by measuring the frequency or phase characteristics of the sensor and can then be correlated to the corresponding physical quantity being measured.


Virtually all acoustic wave devices and sensors use a piezoelectric material to generate the acoustic wave. Piezoelectricity was discovered by brothers Pierre and Paul-Jacques Curie in 1880, received its name in 1881 from Wilhelm Hankel, and remained largely a curiosity until 1921, when Walter Cady discovered the quartz resonator for stabilizing electronic oscillators . Piezoelectricity refers to the production of electrical charges by the imposition of mechanical stress. The phenomenon is reciprocal. Applying an appropriate electrical field to a piezoelectric material creates a mechanical stress. Piezoelectric acoustic wave sensors apply an oscillating electric field to create a mechanical wave, which propagates through the substrate and is then converted back to an electric field for measurement.



Application Images:




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