A new design and manufacturing process for embedded Lamb waves interdigital transducers based on piezopolymer film

被引：37

作者：

Bellan, F

Bulletti, A

Capineri, L

Masotti, L

Yaralioglu, GG

Degertekin, FL

Khuri-Yakub, BT

Guasti, F

Rosi, E

机构：

[1] Univ Florence, Dept Elect & Telecommun, Ultrasound & Nondestruct Testing Lab, I-50139 Florence, Italy

[2] Stanford Univ, Edward L Ginzton Lab, Stanford, CA 94305 USA

[3] Georgia Inst Technol, George W Woodruff Sch Mech Engn, Atlanta, GA 30332 USA

[4] Alenia Spazio Laben, Proel Tecnol Plant, I-50013 Florence, Italy

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 2005年 / 123-24卷

关键词：

interdigital transducers; polyvinylidene fluoride (PVDF); Lamb waves; carbon fiber composites; smart materials; non-destructive testing (NDT);

D O I：

10.1016/j.sna.2005.05.013

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this work a new technology for designing and manufacturing ultrasonic interdigitat transducers (IDT) is presented. The piezoelectric material used is a metallised piezopolymer film made of polyvinylidene fluoride (PVDF) with electrode pattern obtained with a laser ablation process. Piezopolymer transducer prototypes are designed with wavelength of 8 mm to operate with Lamb waves (symmetrical S-0 mode). An experimental validation of the piezopolymer IDT design is demonstrated with a transmitter-receiver IDT pair embedded in a 3 mm thick carbon fiber reinforced plastic (CFRP) composite laminate. Acoustical response and the electrical impedance have been calculated. These transducers are proposed for monitoring structural integrity of structures/components made of carbon epoxy composite laminates commonly used in spacecrafts, satellite and airplanes. (C) 2005 Elsevier B.V. All rights reserved.

引用

页码：379 / 387

页数：9

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