A method is presented for measuring short duration flash temperatures in sliding contacts. The method uses a photomultiplier to collect photons emitted by a hot contact spot. The method was used to measure flash temperatures at the contact between a spherical sapphire slider and a rapidly moving thin film magnetic disk. It was found that temperature flashes of over 1000° C, lasting less than 2 μs, can occur at the sliding interface.
Issue Section:
Research Papers
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Copyright © 1991
by The American Society of Mechanical Engineers
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