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Zibo Yuhai Electronic Ceramic Co., Ltd.
(Originally, Zibo Wireless Ceramic Factory)
Address :  No.57 Chuangye Road, Development Area Boshan, Zibo City, Shandong Prov. P.R. of China 
Tel : +86-0533-4230012      
Fax : +86-0533-4231700
Email : ceo@zbyuhai.com
            

Product details
  • Product name: NDT Piezoelectric ceramic tube 48KHz
  • Product number: PZT-52-Φ20.5×Φ17.5×25mm
  • Date: 2016-12-29
  • Views : 112

Piezo Tube  outer diameter 20.5mm, length 25mm, wall thickness 1.5mm

 Radial mode vibration

 

Material: PZT-52(modified P5A)

Frequency: 48KHz±2KHz

ΔF: 450Hz

Electromechanical coupling coefficient Kr>0.3

Static capacitance Cs: 22nF±15%

Test Condition: 23±3 °C 40~70% R.H.

 

 

Applications: NDT Non destructive Testing 

 

Non-destructive testing (NDT) is a testing method to inspect the surface and internal quality of the inspected parts without damaging the working state of the workpiece or raw materials.

 

There are many kinds of ultrasonic flaw detectors, but in the actual flaw detection process, pulse reflection ultrasonic flaw detectors are most widely used. Generally, in homogeneous materials, the existence of defects will cause the discontinuity of materials, which often results in the inconsistency of acoustic impedance. From the reflection theorem, we know that ultrasound will reflect at the interface of two media with different acoustic impedance. The magnitude of the reflected energy is related to the difference of acoustic impedance of the media on both sides of the interface and the orientation and size of the interface.

 

SOFT PZT suitable for NDT detector.

 

 

 

Typical value of piezoelectric ceramic materials performance        
"Soft" PZT materials                  
Properties     PZT-51 PZT-52 PZT-53 PZT-5H PLiS-51 PMgN-51 PSnN-5
Dielectric Constant ɛTr3   2200 2400 2600 3200 2000 3800 1600
                   
Coupling factor  KP   0.62 0.63 0.64 0.68 0.62 0.64 0.6
  K31   0.35 0.35 0.36 0.38 0.35 0.35 0.35
  K33   0.68 0.7 0.7 0.76 0.7 0.7 0.68
  Kt   0.5 0.5 0.5 0.52 0.52 0.52 0.5
Piezoelectric coefficient d31 10-12m/v -186 -204 -227 -275 -197 -270 -170
  d33 10-12m/v 500 520 550 620 450 600 400
  g31 10-3vm/n -9.6 -9.8 -9.9 -9.7 -11.1 -8 -12
  g33 10-3vm/n 25.6 24.5 23.9 22 25.4 18 28
Frequency coefficients Np   1980 1980 1960 1900 1920 1980 2000
  N1   1451 1451 1437 1393 1407 1451 1466
  N3   1900 1900 1755 1550 1925 1800 1825
  Nt   2150 2150 2150 2100 2100 2100 2100
Elastic compliance coefficient Se11 10-12m2/n 16.7 17 17.4 18 18 18 16.6
Machanical quality factor Qm   80 75 75 70 80 70 85
                   
Dielectric loss factor Tg δ % 2 2 2 2 2 1.8 2
Density ρ g/cm3 7.6 7.6 7.6 7.5 7.5 7.6 7.5
Curie Temperature Tc °C 270 270 270 230 345 270 350
Young's modulus YE11 <109N/m3 60 59 57.5 56 56 56 60
Poison Ratio     0.36 0.36 0.36 0.36 0.36 0.36 0.36
 
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