Ultrasonic NDE in a reactor core

Parks, D. A.; Tittmann, Bernhard R.

doi:10.1109/icsens.2011.6126944

Cited by 10 publications

(5 citation statements)

References 5 publications

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“…To model equation (7), a physics based model is formulated in COMSOL using Lagrangian formulation. Reduction in the computational size is achieved by the assumption of the displacement field to be symmetric over an axis passing through center of the piezoelectric disc.…”

Section: Temperature Dependence Of Piezoelectric Materialsmentioning

confidence: 99%

“…Further details on modeling of dynamic response of piezoelectric material are discussed in the next section. Hence, current approach considers temperature dependency of ten material coefficients given by equation (7) instead of only d33 which was reported previously [7] to quantify performance of HT piezoelectric transducer. ( , , , , ) ( , , , , )…”

Section: Temperature Dependence Of Piezoelectric Materialsmentioning

confidence: 99%

“…The applications of ultrasonic transducers in high temperature and harsh environment is expanding rapidly in nuclear power industry, gas turbines and the space exploration technology [1][2][3][4][5][6][7][8][9]. These electro-mechanical sensors play an important role in the performance efficiency and life extension of critical infrastructure by providing a structural health insight through an ultrasonic scan [1] [8] [9].…”

Section: Introductionmentioning

confidence: 99%

“…During the past 40 years, extensive experimental work on high temperature (HT) ultrasonic transducer has been reported, but many transducers demonstrated limits to performance and life [9]. The monitoring of the transducer performance has been limited to measurement of d33 of the piezoelectric material as a function of temperature [7].…”

Section: Introductionmentioning

confidence: 99%

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Development of BS-PT based high temperature ultrasonic transducer

Bilgunde

Bond

2017

Health Monitoring of Structural and Biological Systems 2017

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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.

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Section: Temperature Dependence Of Piezoelectric Materialsmentioning

confidence: 99%

Section: Temperature Dependence Of Piezoelectric Materialsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Development of BS-PT based high temperature ultrasonic transducer

Bilgunde

Bond

2017

Health Monitoring of Structural and Biological Systems 2017

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show abstract

“…The radiation effect on the sensitivity of piezoelectric transducer has been investigated and reported in several papers [27][28][29][30][31]. For high temperature and extended operation two approaches to design have been investigated: a) waveguide based transducer and b) fully immersion transducer.…”

Section: Introductionmentioning

confidence: 99%