Using a residual strength model to predict mode II delamination failure of composite materials under block fatigue loading

被引：12

作者：

Chowdhury, Nabil M. ^{[1
]}

Healey, Rowan ^{[1
]}

Wang, John ^{[2
]}

Chiu, Wing Kong ^{[1
]}

Wallbrink, Chris ^{[2
]}

机构：

[1] Monash Univ, Dept Mech & Aerosp Engn, Clayton, Vic 3800, Australia

[2] Def Sci & Technol Grp, Aerosp Div, 506 Lorimer St, Fishermans Bend, Vic 3207, Australia

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2020年 / 135卷

关键词：

Durability; Fatigue; SN curve; Strength Life Equal Rank Assumption; Composites; LIFE PREDICTION; SPECTRUM MODIFICATION; AMPLITUDE; GROWTH;

D O I：

10.1016/j.ijfatigue.2020.105563

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

An experimental investigation was undertaken to measure delamination growth to the point of failure under spectrum loading including the effects of cycle sequences. Composite coupons were subjected to Mode II fatigue loading using a reversible three point bend test rig under displacement control. Stress-life curves were established using results from a series of constant amplitude fatigue tests. Variable loading effects were then assessed using a series of methodical block loading fatigue tests for which a residual strength method was successfully adjusted for use with displacement controlled test data. The model produced conservative predictions which displayed good agreement with experimental results.

引用

页数：8

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