Flexible ultrasonic array sensors for health monitoring

M. Kobayashi; K.-T. Wu; L. Song; Q. Liu; C.-K. Jen

doi:10.1117/12.715301

11 April 2007 Flexible ultrasonic array sensors for health monitoring

M. Kobayashi, K.-T. Wu, L. Song, Q. Liu, C.-K. Jen

Proceedings Volume 6532, Health Monitoring of Structural and Biological Systems 2007; 653211 (2007) https://doi.org/10.1117/12.715301
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2007, San Diego, California, United States

Abstract

Flexible ultrasonic array transducers which can be attached to the desired structures or materials for nondestructive testing and structural health monitoring applications at room and elevated temperatures are developed. These flexible ultrasonic transducers (UTs) arrays consist of a thin polyimide membrane with a bottom electrode or stainless steel foil, a piezoelectric lead-zirconate-titanate (PZT) composite film and top electrodes. The flexibility is realized owing to the porosity of piezoelectric film and the thinness of substrate and electrodes. Top and bottom electrode materials are silver paste, silver paint or electroless plated nickel alloys. The UT array is configured by the several top electrodes. The flexible UT has been successfully tested at 150°C and also immersed into water as immersion ultrasonic probe operated in the pulse-echo mode with good signal to noise ratio.

Citation Download Citation

M. Kobayashi, K.-T. Wu, L. Song, Q. Liu, and C.-K. Jen "Flexible ultrasonic array sensors for health monitoring", Proc. SPIE 6532, Health Monitoring of Structural and Biological Systems 2007, 653211 (11 April 2007); https://doi.org/10.1117/12.715301

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