High Quality Piezo Dsc Piezo Ceramic Crystals for NDT Sensor
Product Description
High Quality Piezo Dsc Piezo Ceramic Crystals for NDT Sensor
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.
PZT4 material piezo disks |
piezoelectric disk transducer |
piezo disc for Non-destructive Testing |
Size:
Thickness:4mm
Material:P-41
Standard Size of Piezo Discs:
range of piezo disc to produce:
Diameter: 2mm-120mm
Thickness:0.1mm-30mm
Applications:
Piezoelectric ceramic materials are the active component in non-destructive testing transducers. The material is driven with an alternative current (AC) signal which generates an ultrasonic sound wave that is coupled into an object. The ultrasonic wave is reflected back to the transducer when it encounters a change in density in the material caused by a crack, porosity, or other object with a different density.
Transducers may be produced in a wide range of frequencies to achieve different depths of penetration and resolution. Piezoelectric non-destructive testing is widely used to monitor the quality and fatigue of welds and structural components such as aircraft wings or pressure vessels.
Typical value 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 |
Application Image: