کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5439560 1509873 2017 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Improved fiber orientation predictions for injection molded fiber composites
ترجمه فارسی عنوان
پیش بینی جهت گیری فیبر بهبود یافته برای کامپوزیت های فیبر تزریقی
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی
Highly concentrated fiber suspensions exhibit complex rheological behaviors. There is a particular broader core region of the fiber orientation structure for fiber-filled parts in the injection molding process. However, there is a long-running problem requiring an urgent solution for the industry: to date, prior state-of-the-art predictive engineering tools have always provided unsatisfactory results pertaining to the narrow core. In accordance with insights derived from experimental results related to fiber suspension viscosity, yield stress viscosity does exist at low shear rates. By introducing the yield stress term to modify the standard Cross-WLF viscosity flow curve, namely the Yield-Cross-WLF, the core region can be realistically widened at present. Regarding validation, we employed the Yield-Cross-WLF viscosity model used in 3D injection molding simulation of an end-gated plaque for the concentrated long-carbon-fiber composite. Significantly, the predicted fiber orientation distributions show strong agreement with the measurements, as well as improvement compared to previous simulation attempts.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Part A: Applied Science and Manufacturing - Volume 99, August 2017, Pages 65-75
نویسندگان
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