Flexible ultrasonic transducers for structural health monitoring of metals and composites | Zendy

Makiko Kobayashi | Zendy; K.-T. Wu | Zendy; Jeanne-Louise Shih | Zendy; C. K. Jen | Zendy; S. E. Kruger | Zendy

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Flexible ultrasonic transducers for structural health monitoring of metals and composites

Author(s) -

Makiko Kobayashi,

K.-T. Wu,

Jeanne-Louise Shih,

C. K. Jen,

S. E. Kruger

Publication year - 2010

Publication title -

proceedings of spie, the international society for optical engineering/proceedings of spie

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.192

H-Index - 176

eISSN - 1996-756X

pISSN - 0277-786X

DOI - 10.1117/12.848863

Subject(s) - materials science , composite material , lead zirconate titanate , ultrasonic sensor , piezoelectricity , composite number , transducer , epoxy , aluminium , electrode , graphite , enhanced data rates for gsm evolution , titanium , ultrasonic testing , acoustics , ferroelectricity , metallurgy , optoelectronics , telecommunications , chemistry , physics , computer science , dielectric

Flexible ultrasonic transducers (FUTs) are presented for structural health monitoring (SHM) and non-destructive evaluation (NDE) of graphite/epoxy (Gr/Ep) composites. These FUTs are fabricated using a sol-gel spray technique to coat piezoelectric films onto 75 m thick titatanium (Ti) or 50 m thick polymide (Pl) membranes. The main merit of FUTs is their on-site installation capability because they may be glued or attached to a host Gr/Ep structure with planar or curved surfaces. The flexibility of such FUTs is achieved due to the thin substrates, piezoelectric ceramics and electrodes. Tapered Gr/Ep layers bonded onto each side of an aluminum (Al) plate and on a Gr/Ep composite plate with artificial delaminations were investigated. An induction type non-contact method for the evaluation of Gr/EP composites using FUTs is also demonstrated. Such a non-contact technique may be desired for SHM and NDE of rotating composite components.Peer reviewed: YesNRC publication: Ye

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