Extension of Yamaguchi's laser-speckle surface-strain-gauge method yields data on two-dimensional surface strains in times as short as fractions of second. Laser beams probe rough spot on surface of specimen before and after processing. Changes in speckle pattern of laser light reflected from spot indicative of changes in surface strains during processing. Used to monitor strains and changes in strains induced by hot-forming and subsequent cooling of steel.


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    Title :

    Two-Dimensional Laser-Speckle Surface-Strain Gauge


    Contributors:

    Published in:

    Publication date :

    1992-04-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English







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