NASA NTRS · 19900000075
Magnetically-Guided Penetrant Applicator
Abstract
Small wheeled vehicle moved inside nonmagnetic enclosure. Miniature magnetically guided truck uses foam-rubber sponge pads to apply penetrant fluid for inspection of welds in hidden surfaces of nonmagnetic tubes. Risk of explosion less than if electric motor used to drive vehicle. Inexpensive to make and made in range of sizes.
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Molina, Orlando G.. 1990-02-01. Magnetically-Guided Penetrant Applicator. https://ntrs.nasa.gov/citations/19900000075
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