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NASA NTRS · 20230002753

Evaluation of Ultrasonic Battery Inspection Techniques

Matt Webster·Erik Frankforter·Peter Juarez·Andrew Campbell
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Abstract

Lithium metal batteries are prone to subtle defects such as internal dendrites, which can cause internal short circuits and lead to catastrophic ignition. These defects are often undetectable by battery management systems, prompting the need to advance nondestructive evaluation (NDE) techniques for battery applications. In this work, two ultrasonic approaches were compared to establish their relative merits for this application: local ultrasonic resonance spectroscopy, and guided wave ultrasound. Benchtop experiments on batteries seeded with lithium chips emulating plating were used to demonstrate the two techniques. The results show the ability to identify and map local changes in cell structure.

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UltrasoundLithium Metal BatteryGuided WavesNondestructive Evaluation

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Matt Webster, Erik Frankforter, Peter Juarez, Andrew Campbell. 2023-03-13. Evaluation of Ultrasonic Battery Inspection Techniques. https://ntrs.nasa.gov/citations/20230002753

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Evaluation of Ultrasonic Battery Inspection Techniques

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