Browsing by Author "Groves, Roger M."

Browsing by Author "Groves, Roger M."

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  • Full surface strain measurement using shearography 
    Groves, Roger M.; James, Stephen W.; Tatam, Ralph P. (International Society for Optical Engineering; 1999, 2001-12-31)
    Shearography is a full-field optical technique usually used for the determination of surface strain. Correlation of interferometric speckle patterns recorded before and after the object deformation yields fringes sensitive ...
  • Multi-component shearography using optical fibre imaging-bundles 
    Groves, Roger M.; James, Stephen W.; Tatam, Ralph P. (International Society for Optical Engineering; 1999, 2003-12-31)
    Shearography is a full-field non-contact optical technique usually used for the investigation of defects in nondestructive testing. In shearography interferometric speckle patterns recorded before and after object ...
  • Single-axis combined shearography and digital speckle photography instrument for full surface strain characterization 
    Groves, Roger M.; Fu, S.; James, Stephen W.; Tatam, Ralph P. (Spie -- the Int Soc for Optical Engineering, 2005-02-28)
    Full characterization of the surface strain requires the measurement of six displacement gradient components of the surface strain tensor. The out-of-plane displacement gradient component may be directly measured using ...