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Improvement in the signal strength of magnetostrictive ultrasonic guided wave transducers for pipe inspection using a soft magnetic ribbon-based flux concentrator
Kishore Sathish Kumar,
Published in
2012
Volume: 54
   
Issue: 4
Pages: 217 - 220
Abstract
The magnetostriction means of generation and reception of ultrasonic guided waves is being used for the longrange inspection of pipelines for in-service damage such as corrosion. The generation of higher-strength ultrasonic guided waves in pipes using a magnetostrictive transducer, due to increased magnetostriction using a flux concentrator, is reported in this paper. A soft magnetic ribbon with negligible magnetostriction was used as a flux concentrator in the magnetostrictive sensor. The amplitude of the signal from a sensor with the flux concentrator at a power level of 10% (of the maximum instrument power level) was found to be comparable with the signal obtained from the sensor without flux concentrator at power levels of 50% of the maximum. The effect of the flux concentrator on different magnetostrictive sensors is also reported in this paper.
About the journal
JournalInsight: Non-Destructive Testing and Condition Monitoring
ISSN13542575
Open AccessNo
Concepts (16)
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    FLUX CONCENTRATOR
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    IN-PIPE
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    MAGNETOSTRICTIVE SENSORS
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    MAGNETOSTRICTIVE TRANSDUCERS
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    PIPE INSPECTION
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    Power levels
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    Signal strengths
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    SOFT MAGNETIC RIBBONS
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    Soft magnetics
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    Ultrasonic guided wave
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    Magnetostriction
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    Sensors
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    Solar concentrators
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    Transducers
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    Ultrasonic waves
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    MAGNETOSTRICTIVE DEVICES