STRESS MEASUREMENT IN GRAPHITE-EPOXY COMPOSITES BY X-RAY-DIFFRACTION FROM FILLERS

被引：29

作者：

PREDECKI, P

BARRETT, CS

机构：

[1] University of Denver, Research Institute Denver

来源：

JOURNAL OF COMPOSITE MATERIALS | 1979年 / 13卷 / JAN期

关键词：

D O I：

10.1177/002199837901300105

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

The purpose of this work was to measure stresses in graphite/epoxy composites by diffracting X-rays from crystalline filler particles embedded in unidirectional laminates before curing. Particles used were Ag, Nb and CdO, having sharp diffraction peaks at large diffraction angles, θ. The diffraction peaks shift linearly with applied stress in the fiber direction and have stress sensitivities of (2.6, 3.9 and 1.9) X 10-4deg 2θ/MPa for Ag, Nb and CdO respectively. Elastic strains in filler particles measured by X-rays are proportional to the corresponding composite strains in agreement with the model of H. T. Hahn. Residual strains and stresses in filler particles were also obtained. © 1979, Sage Publications. All rights reserved.

引用

页码：61 / 71

页数：11