Aerospace Engineering, Center for Nondestructive Evaluation (CNDE)
SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring
Link to Published Version
Journal or Book Title
Proceedings of SPIE
Health Monitoring of Structural and Biological Systems 2017
March 25-29, 2017
High temperature (HT) environment in liquid metal cooled reactors poses major challenges towards development of ultrasonic transducer which is a key enabling technology for safety of reactors. In the current work, BS-PT (BiScO3- PbTiO3) piezoelectric material based ultrasonic transducer is proposed for the structural health monitoring at HT. Physics based model using finite element method simulates effect of temperature increase on the transduction ability of the BSPT piezoelectric material. Pulse-echo contact measurements are performed up to 260C which is the hot stand by temperature for liquid metal cooled reactors, to study the performance of the acoustic coupling agent and the BS-PT piezoelectric material bonded to a low-carbon steel sample. Experimental contact measurements indicate 6dB reduction in amplitude of the first backwall echo from 20C to 260C. Also, 0.1 MHz reduction in the fundamental and third harmonic resonance is observed in the spectral analysis of the first backwall echo.
Society of Photo-Optical Instrumentation Engineers (SPIE)
Bilgunde, Prathamesh N. and Bond, Leonard J., "Development of BS-PT based high temperature ultrasonic transducer" (2017). Center for Nondestructive Evaluation Conference Papers, Posters and Presentations. 116.