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عدد المساهمات : 18992 التقييم : 35482 تاريخ التسجيل : 01/07/2009 الدولة : مصر العمل : مدير منتدى هندسة الإنتاج والتصميم الميكانيكى
| موضوع: بحث بعنوان A Review of Advances in Fatigue and Life Prediction of Fiber-reinforced Composites السبت 10 أبريل 2021, 2:06 am | |
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أخوانى فى الله أحضرت لكم بحث بعنوان A Review of Advances in Fatigue and Life Prediction of Fiber-reinforced Composites Satrio Wicaksono and Gin Boay Chai
و المحتوى كما يلي :
Abstract This contribution is an attempt to provide a thorough review of past and current research work on fatigue and life prediction of fiber-reinforced composites. In order to summarize and present a comprehensive overview of the current state-of-the-art published works, the reviews in this contribution are broadly summarized into four groups of review; (1) fatigue of fiber-reinforced composites, (2) composite damage mechanism, (3) composite failure criteria and, (4) composite fatigue modeling and life prediction. The review will begin with a discussion of inherent and environmental factors affecting the fatigue of composites. This is followed by a rather extensive description of the composite damage mechanism and a summary of commonly used failure criteria for life prediction. And towards the end, models and methods for fatigue and life prediction of composites are summarized and discussed. Concluding remarks Thorough reviews of the past and current research work on the fatigue and life prediction of fiber-reinforced composites were carried out and discussed in this contribution. The factors affecting fatigue response and damage mechanism of fiber-reinforced composites subjected to cyclic loads were presented and discussed in some details. The use of accelerated testing methodology to allow for environmental effects on the life prediction of composites was also presented and discussed with deliberations. In-depth reviews of the available failure criteria for fiber-reinforced composites were also included. Progressive fatigue model is perhaps the most sophisticated model to date compared to the fatigue life model and the phenomenological model. Coupled with the sophistication of the model are the complexity and economic challenges. Fatigue life model is much simpler and easier to apply, as the model can predict up to the first point of failure without the details of stiffness degradation before failure. The current knowledge on fatigue response and life prediction of fiber-reinforced composites is still not yet matured and there are still a lot more work that needs to be done. This is especially true in the development of a failure criterion (or a suite of failure criteria) that is capable of predicting failure for all type of fiber-reinforced composite structures and for all type of loading conditions. There is also a need for a progressive fatigue model that is much simpler, inexpensive computationally and demanding only basic material testing. Current state-of-the-art work on damage modeling appears to gaining momentum and there are signs that future research work is progressing towards a more sophisticated progressive damage model coupled with mode-dependent failure criterion for a more complete prediction of failure modes and the progression of failure of composites subject to static and fatigue loads.
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