Multi-axial fatigue life estimation of unidirectional GFRP composite

被引：13

作者：

Colombo, C. ^{[1
]}

Vergani, L. ^{[1
]}

机构：

[1] Politecn Milan, Dipartimento Meccan, I-20156 Milan, Italy

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2011年 / 33卷 / 08期

关键词：

Multi-axial loading; GFRP composite; Fatigue life; FAILURE CRITERION; BEHAVIOR; DAMAGE; MODEL;

D O I：

10.1016/j.ijfatigue.2011.01.001

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Aim of this work is to test and understand the mechanical behaviour, in multi-axial stress conditions, of a composite material (E-glass reinforce fibres and vinyl-ester matrix) used to build a structural component: a corner beam of bus cabin. A series of experimental tests is performed on specimens cut out from this beam. Different unidirectional (UD) fibres orientations with respect to the direction of load application are considered: longitudinal (0 degrees), normal (90 degrees), inclined at 30 degrees and 45 degrees. Static and fatigue characterization are carried out to identify the mechanical behaviour in terms of sigma-N curves. Obtained fatigue data are then interpolated by fitting the parameters required for multi-axial models of fatigue life estimation. A final comparison with the literature data is included, proposing a simple tool to evaluate the damage evolution of E-glass reinforced composites during fatigue life. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：1032 / 1039

页数：8

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