Name
Title | ||
|---|---|---|
Broadband and high sensitive time-of-flight diffraction ultrasonic transducers based on PMNT/epoxy 1-3 piezoelectric composite. |
Abstract | ||
|---|---|---|
5-6 MHz PMNT/epoxy 1-3 composites were prepared by a modified dice-and-fill method. They exhibit excellent properties for ultrasonic transducer applications, such as ultrahigh thickness electromechanical coupling coefficient k(t) (85.7%), large piezoelectric coefficient d(33) (1209 pC/N), and relatively low acoustic impedance Z (1.82 x 10(7) kg/(m(2)s)). Besides, two types of Time-of-Flight Diffraction (TOFD) ultrasonic transducers have been designed, fabricated, and characterized, which have different matching layer schemes with the acoustic impedance of 4.8 and 5.7 x 10(6) kg/(m(2)s), respectively. In the detection on a backwall of 12.7 mm polystyrene, the former exhibits higher detectivity, the relative pulse-echo sensitivity and -6 dB relative bandwidth are -21.93 dB and 102.7%, respectively, while the later exhibits broader bandwidth, the relative pulse-echo sensitivity and -6 dB relative bandwidth are -24.08 dB and 117.3%, respectively. These TOFD ultrasonic transducers based on PMNT/epoxy 1-3 composite exhibit considerably improved performance over the commercial PZT/epoxy 1-3 composite TOFD ultrasonic transducer. |
Year | DOI | Venue |
|---|---|---|
2015 | 10.3390/s150306807 | SENSORS |
Keywords | Field | DocType |
time-of-flight diffraction,ultrasonic transducer,PMNT,1-3 piezoelectric composite | Acoustic impedance,Ultrasonic sensor,Electronic engineering,Engineering,Piezoelectric coefficient,Diffraction,Epoxy,Electromechanical coupling coefficient,Piezoelectricity,Time-of-flight diffraction ultrasonics | Journal |
Volume | Issue | ISSN |
15 | 3.0 | 1424-8220 |
Citations | PageRank | References |
0 | 0.34 | 1 |
Authors | ||
9 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Dongxu Liu | 1 | 0 | 0.68 |
| Qingwen Yue | 2 | 2 | 1.83 |
| Ji Deng | 3 | 0 | 0.34 |
| Di Lin | 4 | 0 | 0.68 |
| Xiaobing Li | 5 | 0 | 0.34 |
| Wenning Di | 6 | 0 | 0.68 |
| Xi'an Wang | 7 | 0 | 0.34 |
| Xiangyong Zhao | 8 | 0 | 0.34 |
| Haosu Luo | 9 | 0 | 1.01 |