高性能ポリエチレン繊維充てんエポキシ樹脂複合材料における応力伝達機構のX線的解析 : 繊維軸に対して直角方向

概要

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Stress transfer perpendicular to the axis of high performance polyethylene fibers in a fiber reinforced epoxy resin composite was investigated by X-ray diffraction. The intensity of stress σ_f in the embedded fiber could be measured by monitoring the strain of the crystalline regions of polyethylene by X-ray diffraction. The stress σ_f increased linearly with the applied stress σ_o as well as the hydrophilicity of fiber surface. Further the increase of σ_o made the stress σ_f reach a plateau. The fracture behavior was variable depending on the surface treatment of fiber. The"X-Ray Diffraction Method"is shown to be a powerful tool for detecting the stress on the incorporated fiber in the composite under load in situ and non-destructively.
1998-03-15