Accession Number : ADA302839

Title :   A Study of the Effects of Long-Term Exposure to Fuels and Fluids on the Behavior of Advanced Composite Materials.

Descriptive Note : Final rept.,

Corporate Author : BOEING COMMERCIAL AIRPLANE CO SEATTLE WA

Personal Author(s) : Tanimoto, E. Y.

PDF Url : ADA302839

Report Date : AUG 1981

Pagination or Media Count : 37

Abstract : This program involved the periodic testing and evaluation of graphite/epoxy and Kevlar/epoxy material systems after subjecting test specimens to prolonged exposure to several laboratory-controlled environments deemed typical of normal aircraft operations. This investigation showed that specimen immersion in water or water-based fluids resulted in the greatest effect on the mechanical properties tested. Also, the environmental fluids showed a tendency to affect Kevlar/epoxy systems at an earlier exposure period than the graphite/epoxy systems. Results also indicate mechanical property strength retention generally being lower for the Kevlar/epoxy systems when compared to the corresponding graphite/epoxy systems in similar environments, after prolonged exposure. jg p3

Descriptors :   *EXPOSURE(GENERAL), *COMPOSITE MATERIALS, *FUELS, *FLUIDS, TEST AND EVALUATION, CONTROL, MECHANICAL PROPERTIES, ENVIRONMENTS, AIRCRAFT, WATER, GRAPHITE, STRENGTH(MECHANICS), LONG RANGE(TIME), RETENTION(GENERAL), LABORATORIES, EPOXY COMPOUNDS, IMMERSION.

Subject Categories : Laminates and Composite Materials
      Aircraft
      Physical Chemistry
      Fuels

Distribution Statement : APPROVED FOR PUBLIC RELEASE