ارزیابی عمر خستگی پره کامپوزیتی توربین بادی
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ارزیابی عمر خستگی پره کامپوزیتی توربین بادی

عنوان فارسی مقاله: به سوی ارزیابی عمر خستگی پره کامپوزیتی توربین بادی با استفاده از مدل آسیب مقیاس ply
عنوان انگلیسی مقاله: Toward composite wind turbine blade fatigue life assessment using ply scale damage model
مجله/کنفرانس: مهندسی پروسیدیا - Procedia Engineering
رشته های تحصیلی مرتبط: مهندسی مواد، مهندسی مکانیک
گرایش های تحصیلی مرتبط: مهندسی مواد مرکب، مکاترونیک
کلمات کلیدی فارسی: مدل آسیب، خستگی، پره توربین بادی
کلمات کلیدی انگلیسی: Damage model، Fatigue، Wind turbine blade
نوع نگارش مقاله: مقاله پژوهشی (Research Article)
شناسه دیجیتال (DOI): https://doi.org/10.1016/j.proeng.2018.02.019
دانشگاه: TENSYL, 48 rue Jacques de Vaucanson, Pôle Arts&Métiers, 17180 Périgny, France
ناشر: الزویر - Elsevier
نوع ارائه مقاله: کنفرانس
نوع مقاله: ISI
سال انتشار مقاله: 2018
ایمپکت فاکتور: 0/970 در سال 2018
شاخص H_index: 51 در سال 2019
شاخص SJR: 0/277 در سال 2018
شناسه ISSN: 1877-7058
فرمت مقاله انگلیسی: PDF
تعداد صفحات مقاله انگلیسی: 10
وضعیت ترجمه: ترجمه نشده است
قیمت مقاله انگلیسی: رایگان
آیا این مقاله بیس است: خیر
کد محصول: E11421
فهرست انگلیسی مطالب

Abstract


1- Introduction


2- Calculation methods


3- Comparison of the two approaches


4- Conclusion


References

نمونه متن انگلیسی مقاله

Abstract


Fatigue design optimization of composite material structures is limited by the classical approaches used, derived from knowledge based on metal fatigue. Other approaches exist to describe damage mechanisms of composites but they cannot always be applied at the structure scale because of their complexity. However, assumptions can be made in the case of beam structures to reduce the structural investigation at the section scale. With these assumptions this paper proposes to compare a progressive fatigue damage model written at the ply scale to the normative approach for the assessment of wind turbine blade section design. It is shown that the normative approach is very conservative and the progressive fatigue damage model provides very useful information to understand damage propagation at the structure scale.


Introduction


At the present time, the wind power industry is facing the double challenge of further increasing the size of turbines for off-shore production and making them lighter for land-based production, so that they can be adapted for use in less windy areas. The main stumbling block has been identified in the hope that the design of the blades can be optimised to meet these challenges, and it concerns the precision of their design under fatigue. A wind turbine blade is generally designed to be in rotational operation for 20 years in wind fields that by their very nature are variable. This creates structures that are highly subject to fatigue. We are talking about 108 cycles approximately, which makes fatigue over a long lifetime the main design criterion [1]. In addition to high resistance to fatigue, the material used for the blades should have a low mass, which has a direct impact on stress, sufficient stiffness so that it does not impair the aerodynamic properties of the turbine, and a cost that makes wind energy competitive. With all these elements combined, it soon became clear that glass fibre non-crimp fabrics (NCF), with possibly carbon fibres locally with polyester or epoxy matrices, were required for medium and large sized blades. Although long fibre composites have high resistance to fatigue, there is as yet no commonly accepted design method devoted specifically to these materials and the normative approach currently used in the context of blade certification is based on a transposition of existing knowledge of the fatigue behaviour of metals [2]. In this study, the normative approach is compared with a progressive fatigue damage model written at the ply scale.

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