Investigation of the Influence of Material Variables on Fatigue Mechanisms in Composites

摘要

The investigation pursued the following areas: (1) Determination of the static and fatigue characteristics of graphite/epoxy composite of current interest to the NASC (Modmor II (HTS)/Narmco 5206 prepreg). (2) Variation of temperature, stress mode and stress ratio. (3) Utilization of optical and scanning electron microscopic techniques in conjunction with sectioning of the samples to determine the feasibility of following the progress of fatigue cracking in these graphite composites. (4) Variation of fabrication processing (use of glass scrim cloth interlayers). (Author)