Bulk ultrasonic NDE of metallic components at high temperature using magnetostrictive transducers

Online ultrasonic NDE at high-temperature is of much interest to the power, process and automotive industries in view of possible savings in downtime. This paper describes a novel approach to developing ultrasonic transducers capable of high-temperature in-situ operation using the principle of magne...

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Hauptverfasser: Ashish, Antony Jacob, Rajagopal, Prabhu, Balasubramaniam, Krishnan, Kumar, Anish, Rao, B. Purnachandra, Jayakumar, Tammana
Format: Tagungsbericht
Sprache:eng
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Zusammenfassung:Online ultrasonic NDE at high-temperature is of much interest to the power, process and automotive industries in view of possible savings in downtime. This paper describes a novel approach to developing ultrasonic transducers capable of high-temperature in-situ operation using the principle of magnetostriction. Preliminary design from previous research by the authors [1] is extended for operation at 1 MHz, and at elevated temperatures by amorphous metallic strips as the magnetostrictive core. Ultrasonic signals in pulse-echo mode are experimentally obtained from the ultrasonic transducer thus developed, in a simulated high-temperature environment of 350 °C for 10 hours. Advantages and challenges for practical deployment of this approach are discussed.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.4974604