PROGRESSION OF BENDING FATIGUE DAMAGE AROUND A DISCONTINUITY IN GLASS EPOXY COMPOSITES

被引：16

作者：

HERRINGTON, PD

DOUCET, AB

机构：

[1] LOUISIANA STATE UNIV,DEPT MECH ENGN,BATON ROUGE,LA 70803

[2] UNIV NEW ORLEANS,DEPT MECH ENGN,NEW ORLEANS,LA 70148

来源：

JOURNAL OF COMPOSITE MATERIALS | 1992年 / 26卷 / 14期

关键词：

FATIGUE DAMAGE; BENDING FATIGUE; FLEXURAL FATIGUE; FIBERGLASS; COMPOSITE MATERIALS; DELAMINATION;

D O I：

10.1177/002199839202601403

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

The progression of bending fatigue damage around a discontinuity in spring orientation glass fiber reinforced epoxy was investigated. The specimens contained circular holes of two different hole diameter/specimen width ratios. Bending fatigue tests were performed by applying a constant maximum deflection at the end of the cantilever type specimen. The extent of delamination and internal cracking was observed using visual and scanning electron microscopy. The reduction in stiffness during fatigue cycling was linearly related to the total delamination size, independent of the maximum applied load. It was also determined that the relative size of the hole had no significant effect on the bending fatigue life.

引用

页码：2045 / 2059

页数：15

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