کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
819820 1469492 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
In-plane strength enhancement of laminated composites via aligned carbon nanotube interlaminar reinforcement
ترجمه فارسی عنوان
تقویت قدرت درون هواپیما از کامپوزیت های چند لایه از طریق تقویت کننده نانولوله کربنی تراز
کلمات کلیدی
نانولوله های کربنی، کامپوزیت ساختاری، ترکیبی ترکیبی، ویژگی های مکانیکی، استحکام
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
چکیده انگلیسی

Aerospace-grade unidirectional carbon fiber laminate interfaces are reinforced with high densities (>10 billion fibers per cm2) of aligned carbon nanotubes (A-CNTs) that act as nano-scale stitches. Such nano-scale fiber reinforcement of the ply interfaces has been shown to increase interlaminar fracture toughness and here we show that laminate in-plane strengths are also increased. Delamination damage modes associated with pre-ultimate failure are suppressed in the in-plane loaded laminates, significantly increasing load-carrying capability: tension-bearing (bolt pull out) critical strength by 30%, open-hole compression ultimate strength by 14%, and L-section bending energy and deflection by more than 25%. No increase in interlaminar or laminate thickness is observed due to the A-CNTs, but rather the ∼10 nm diameter carbon nanotubes interdigitate between carbon fibers in the adjacent laminae, i.e., the observed reinforcement is not due to formation of a thicker interlayer. These increases in substructural in-plane strengths are in stark contrast to degradation that typically occurs with existing 3D reinforcement approaches such as stitching, weaving and z-pinning.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Science and Technology - Volume 133, 14 September 2016, Pages 33–39
نویسندگان
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