Accession Number : ADA306038

Title :   Thermal Loading in the Laser Holography Nondestructive Testing of a Composite Structure.

Descriptive Note : Technical rept.,

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION HUNTSVILLE AL GEORGE C MARSHALL SPACE FLIGHT CENTER

Personal Author(s) : Liu, H. K. ; Kurtz, R. L.

PDF Url : ADA306038

Report Date : MAY 1975

Pagination or Media Count : 25

Abstract : A unique laser holographic interferometry method that has variable sensitivity to surface deformation has been applied to the investigation of composite test samples under thermal loading. These experimental results are presented along with the mathematical analysis of the physical model of the thermal loading and current conduction in the composite material. (AN)

Descriptors :   *FIBERGLASS, *EPOXY COMPOSITES, *THERMAL STRESSES, THERMAL PROPERTIES, MATHEMATICAL MODELS, NONDESTRUCTIVE TESTING, STRESS ANALYSIS, REAL TIME, LAMINATES, DEFORMATION, COMPOSITE STRUCTURES, OPTICAL IMAGES, SENSITIVITY, LASER BEAMS, CERAMIC MATERIALS, OPTICAL INTERFEROMETERS, DEFECTS(MATERIALS), HOLOGRAPHY, TEMPERATURE GRADIENTS, THERMAL ANALYSIS, THERMAL EXPANSION, THERMAL CONDUCTIVITY, SANDWICH CONSTRUCTION, TETRAFLUOROETHYLENE RESINS.

Subject Categories : Laminates and Composite Materials
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE