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Pzt4 Material Custom Piezo Ceramic Disc for Acoustic Doppler Instrument

- Piezo Material: PCrN-4
- Dimensions: Φ20× 3mm
- Resonant Frequency: 700KHZ
- Applications: Doppler velocity logs (DVL), Acoustic Doppler Instrument

Quantity:
  • PZ1000K061
  • Piezohannas
  • PZ1000K061

  Pzt4 Material Custom Piezo Ceramic Disc for Acoustic Doppler Instrument


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


piezo ceramic disc




Piezo Ceramics Disc Description:

 

- Piezo Material:  PCrN-4
- Dimensions: Φ20× 3mm
- Resonant Frequency: 700KHZ
- Applications: Doppler velocity logs (DVL), Acoustic Doppler Instrument


Standard Size of Piezo Discs:


range of piezo disc to produce:

Diameter: 2mm-120mm
Thickness:0.1mm-30mm



DVL Application:


A DVL is an acoustic Doppler instrument, and is similar to the acoustic Doppler current profiler (ADCP). It has acoustic beams oriented in a diverging, convex configuration.However, it differs from ADCPs in its ability to estimate the velocity relative to the bottom (Earth being the frame of reference). This is done by estimating the velocity along each beam relative to the bottom. Operating alone, the DVL provides a means to estimate a distance travelled and calculate the current position with simple “dead reckoning” navigation. However, for underwater AUV and ROV operations, this is not sufficient and a DVL is typically one of multiple inputs into a navigation solution.  In addition to the DVL, a navigation solution may include inertial sensors, acoustic positioning, heading, depth, and altimeter.  These estimates are then passed through estimator algorithms/filters such as a Kalman filter to arrive at an estimate of position.


The value of the DVL into such a solution is that it has zero mean bias and does not drift. The DVL is the critical because without it, the position would drift substantially with time. The DVL helps limit the cumulative errors of a complete navigation solution.



Typical parameters of "Hard" PZT materials performance:


 

Hard" PZT materials



PZT-41

PZT-42

PZT-43/4D

PZT-82

PBaS-4

Dielectric Constant

ɛTr3


1050

1250

1420

1100

1900









Coupling factor 

KP


0.58

0.58

0.58

0.52

0.59


K31


0.32

0.33

0.34

0.3

0.34


K33


0.66

0.67

0.68

0.57

0.68


Kt


0.48

0.48

0.48

0.4

0.49

Piezoelectric coefficient

d31

10-12m/v

-106

-124

-138

-100

-160


d33

10-12m/v

260

280

300

240

380


g31

10-3vm/n

-11.4

-11.2

-11

-10.3

-9.5


g33

10-3vm/n

28

25.3

24

25

22.6

Frequency coefficients

Np


2280

2200

2160

2280

2200


N1


1671

1613

1583

1671

1613


N3


1950

1900

1875

1950

1850


Nt


2250

2200

2200

2300

2200

Elastic compliance coefficient

Se11

10-12m2/n

11.8

12.7

13.2

11.6

13.2

Machanical quality factor

Qm


1000

800

600

1200

2200









Dielectric loss factor

Tg δ

%

0.3

0.4

0.5

0.3

0.5

Density

ρ

g/cm3

7.5

7.5

7.5

7.6

7.5

Curie Temperature

Tc

°C

320

320

320

310

310

Young's modulus

YE11

<109N/m3

85

79

76

86

76

Poison Ratio



0.3

0.3

0.3

0.3

0.33

 




DVL Application Image:

Pzt4 Material Custom Piezo Ceramic Disc for Acoustic Doppler Instrument


Piezo Hannas (WuHan) Tech Co,.Ltd  is a professional piezoelectric ceramics and ultrasonic transducer manufacturer, dedicated to ultrasonic technology and industrial applications.                                    
 

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Add: No.456 Wu Luo Road, Wuchang District, Wuhan City, HuBei Province, China.
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