Comparison between composite and metallic patches for repairing aircraft structures of aluminum alloy 7075 T6

被引：26

作者：

Bouiadjra, Bachir Bachir ^{[1
]}

Benyahia, Faycal ^{[2
]}

Albedah, Abdulmohsen ^{[2
]}

Bouiadjra, Bel Abbes Bachir ^{[1
]}

Khan, Sohail M. A. ^{[2
]}

机构：

[1] Univ Djillali Liabes Sidi Bel Abbes, Dept Mech Engn, LMPM, Cite Ben Mhidi, Sidi Bel Abbes, Algeria

[2] King Saud Univ, Coll Engn, Dept Mech Engn, Riyadh, Saudi Arabia

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2015年 / 80卷

关键词：

Composite patch; Metallic patch; Fatigue life; Water absorption; Stress intensity factor; STRESS INTENSITY FACTOR; ABSORPTION; PERFORMANCES; HUMIDITY; ADHESIVE; PANELS; DAMAGE;

D O I：

10.1016/j.ijfatigue.2015.05.018

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In this study, experimental and numerical investigations were carried out in order to compare the performances of composite and metallic patches for repairing aircraft structures. In the experimental part, an accelerating aging of the composite was realized by the immersion of the composite patch in distilled water. The fatigue lives of notched plates repaired with aged composite patch, non-aged composite patch and aluminum patch were measured. The obtained results show that the composite patch is more beneficial than the aluminum patch if there is no significant water absorption by the composite. In the numerical part, the stress intensity factor at the crack tip was computed for aged and non-aged composite patches and for aluminum patches. The numerical results confirm the experimental ones, the reduction of the stress intensity factor by the composite patch is more significant than the aluminum patch but the water absorption reduces significantly the repair efficiency. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：128 / 135

页数：8

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