کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7215069 1469472 2017 32 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Three dimensional fatigue damage evolution in non-crimp glass fibre fabric based composites used for wind turbine blades
ترجمه فارسی عنوان
تکامل ضایعات خستگی سه بعدی در کامپوزیت های مبتنی بر فیبر شیشه ای بدون استفاده از سرامیک مورد استفاده برای تیغه های توربین بادی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
چکیده انگلیسی
This work studies the tension fatigue damage progression of a uni-directional glass fibre composite made from a non-crimp fabric similar to those used for the main load carrying parts of a wind turbine blade. The spatial damage progression in a chosen region of a test specimen is monitored on a micro-structural scale by ex-situ X-ray computed tomography. The centimetre sized specimen remains uncut during the ex-situ experiment. The experimental results indicate that uni-directional fibre fractures initiate from matrix cracks related to the structure of the fabric: first in the thin off-axis backing bundles at triple cross-over regions where the ±45∘ and 90∘ backing bundles intersect each other and lie close to a uni-directional bundle, and later followed by damage initiation in the other cross-over regions. Uni-directional fibre fractures were seen to increase in number with increasing number of cycles, and mainly progress in the thickness direction of uni-directional bundles (away from the backing bundles). Furthermore, the crack face separation of individual broken uni-directional fibres was observed to gradually increase with an increasing number of cycles. The progression path of the uni-directional fibre fractures was seen to be very dependent on the local backing bundle arrangement.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Science and Technology - Volume 153, 1 December 2017, Pages 261-272
نویسندگان
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