کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
821895 906773 2006 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fatigue behaviour and damage evolution of single lap bonded joints in composite material
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Fatigue behaviour and damage evolution of single lap bonded joints in composite material
چکیده انگلیسی

The paper presents the results of an experimental investigation on the fatigue behaviour of single lap bonded joints. Carbon/epoxy laminates bonded with epoxy adhesive were tested under tension–tension fatigue loading and the effect of overlap length and corner geometry was discussed by using the classical stress-life approach. Significant improvements in fatigue strength can be obtained by adopting long overlap length and spew fillet corner geometry. A careful analysis of the evolution of the fatigue damage was also carried out and it was observed that a significant fraction of the fatigue life of the joint is spent in the nucleation of one or more cracks which then propagate up to failure of the joint. The duration of nucleation process, which can last from 20% up to 70% of the joint life, suggests the need of incorporating this phase in the development of future predictive models. The fatigue crack propagation process is also discussed and the rates of crack propagation evaluated.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Science and Technology - Volume 66, Issue 2, February 2006, Pages 176–187
نویسندگان
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