Open AccessApplications of holographic interferometryto structural and dynamic analysis of anadvanced graphite-epoxy compositecomponent
Author(s) -
Howard Fein
Publication year - 1998
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.3.000035
Subject(s) - holography , materials science , optics , classification of discontinuities , epoxy , graphite , displacement (psychology) , holographic interferometry , image resolution , composite material , physics , psychology , mathematical analysis , mathematics , psychotherapist
It was undertaken to apply holographic techniques to char- acterize the dynamic behavior and structure of an advanced graphite-epoxy composite part and its ancillary mounting geometry. Holograms of the vibrational modes of the structure are used to accurately map the nodes, maxima, minima, and geometry of the induced motion. Holograms of the displacement patterns of mechanical and thermally induced stress in the structure are also used to map the location and extent of nonuniformities, discontinuities, and micro-structural defects in the volume and mounting of the composite material. Holographic data was imaged by a photo-thermoplastic based holocamera system configured for off-axis holograms and coupled to high resolution video capture for subsequent image analysis.