Accession Number : ADA305273

Title :   Determination of Fiber Orientation in Short Fiber Composites,

Corporate Author : DELAWARE UNIV NEWARK CENTER FOR COMPOSITE MATERIALS

Personal Author(s) : Rau, Steven ; McGee, Stuart

PDF Url : ADA305273

Report Date : JUN 1980

Pagination or Media Count : 35

Abstract : Laser scattering techniques are described which permit the rapid determination of quantitative descriptors of the fiber orientation in short fiber composites. The technique is based on the use of reduced images of photomicrograph negatives in which the fiber image is small enough to act as a diffraction slit for a laser light source. Characteristic scattering patterns are obtained for fibers in various states of orientation. Calibration curves are obtained by the use of computer generated scattering masks of known orientation. Laser scattering techniques are described which permit the rapid determination of quantitative descriptors of the fiber orientation in short fiber composites. The technique is based on the use of reduced images of photomicrograph negatives in which the fiber image is small enough to act as a diffraction slit for a laser light source. Characteristic scattering patterns are obtained for fibers in various states of orientation. Calibration curves are obtained by the use of computer generated scattering masks of known orientation.

Descriptors :   *FIBER REINFORCED COMPOSITES, MATHEMATICAL MODELS, ALGORITHMS, IMAGE PROCESSING, SPATIAL DISTRIBUTION, LIGHT SCATTERING, FIBERS, MICROSTRUCTURE, ORIENTATION(DIRECTION), OPTICAL IMAGES, GRATINGS(SPECTRA), LASER APPLICATIONS, DIFFRACTION, CALIBRATION, MOLDING TECHNIQUES, PHOTOMICROGRAPHY.

Subject Categories : Laminates and Composite Materials
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE