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    Surface inspection via projection interferometry

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    Downloads: 917
    Date
    1988-05
    Author
    Wygant, R. W.
    Almeida, S. P.
    Soares, O. D. D.
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    Abstract
    Projection fringe interferometry provides a useful technique for nondestructive surface analysis. Two beam interferometric fringes were projected onto a block of aluminum whose surface had various types of grooves cut into it. The fringes were digitized and analyzed via an automatic fringe tracking algorithm. Three-dimensional topographical maps of the surface's microstructure are presented together with a statistical analysis of surface parameters including average roughness, height distributions, and the autocorrelation function.
    URI
    http://hdl.handle.net/10919/46966
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    • Scholarly Works, Department of Physics [873]

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