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نویسندگان مقالات پربازدید :
مواد و طراحی
جزئیات رویداد
اینستاگرام تی پی بین
همایش ، رویداد ، ژورنال
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  • post-buckling failure in multi-delaminated composite wind turbine blade materials

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    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1390/01/01
    • تاریخ انتشار در تی پی بین: 1390/01/01
    • تعداد بازدید: 603
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     this study models the inter-laminar damage due to low velocity impacts on hybrid composite materials typical of those used in wind turbine blade structures. the effect of z-pinning using natural flax yarn on the critical buckling load and post-buckling behaviour of multi-delaminated composite beams was investigated. laminated composite beams were pinned through their thickness using natural flax yarns to control delamination failure during the post-buckling process. a multiple delamination with a triangular shape was inserted into each of the beams to simulate the damage caused by a low velocity impact e.g. ice, on composite wind turbine blades. for a laminate design of [c90/g90]4, global collapse caused no delamination failure during the post-buckling test while delamination failure occurred for a laminate design of [c0/g0]4. in this case, z-pinning can significantly increase the failure resistance within a composite structure and it can then postpone the failure process. the buckling process of a multi-delaminated composite beam was also simulated by finite element software ansys and the results were substantially verified by relevant experimental results.

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