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  • INSTRUMENTATION AND PHOTOGRAPHY  (2)
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  • 1
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    Digital imaging techniques in experimental stress analysis (1982)
    In:  Other Sources
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    Publication Date: 2019-06-28
    Description: Digital imaging techniques are utilized as a measure of surface displacement components in laser speckle metrology. An image scanner which is interfaced to a computer records and stores in memory the laser speckle patterns of an object in a reference and deformed configuration. Subsets of the deformed images are numerically correlated with the references as a measure of surface displacements. Discrete values are determined around a closed contour for plane problems which then become input into a boundary integral equation method in order to calculate surface traction in the contour. Stresses are then calculated within this boundary. The solution procedure is illustrated by a numerical example of a case of uniform tension.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Optical Engineering; 21; May-June
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 2
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    Experimental boundary integral equation applications in speckle interferometry (1982)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: A complete data analysis system utilizing laser speckle interferometry and Experimental Integral Equation Method (EBIE) is described. A host computer provides the optical data analysis and serves as an input device to a PDP11/VAX computer for numerical analysis. The basic theory of pointwise filtering and digital correlation is described as experimental data input to the BIE method.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Spring Meeting; May 31, 1981 - Jun 04, 1981; Dearborn, MI
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
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