کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4912163 | 1428539 | 2017 | 25 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The mechanism of rate-dependent off-axis compression of a low fibre volume fraction thermoplastic matrix composite
ترجمه فارسی عنوان
مکانیسم فشرده سازی خارج از محدوده سرعت کم کامپوزیت ماتریس ترموپلاستیک کامپوزیت کم فیبر
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کلمات کلیدی
کامپوزیت ماتریکس ترموپلاستیک رفتار ضربه، وابستگی به نرخ تغییر شکل محدود نرخ فشار بالا،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
This paper reports on the mechanism of rate-dependent off-axis compression of a unique unidirectional composite with unusually high matrix volume fraction of 65%. The test material is an E-glass fibre reinforced polypropylene composite and was subjected to quasi-static, medium and high strain rates (with strain rates from 10-3Â sâ1 to 103Â sâ1). This paper has shown experimental evidence of significant rate-dependence of yielding, strain softening and fracture strain of the test composite. Also, the study reports on the effect of strain rates on evolution of different failure modes of the composite. The observed rate-dependence was shown to result from the influence of the pure matrix on the constitutive behaviour of the composite. The work has used a two-process Ree-Eyring yield model of the matrix to demonstrate the origin of the observed rate-dependent yielding of the composite. The data derived in this study will be significant for further micro-mechanical modelling of finite deforming composites used in especially damage tolerant applications. Composite design engineers and stress analysis experts should benefit also from the findings in this work.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composite Structures - Volume 168, 15 May 2017, Pages 685-697
Journal: Composite Structures - Volume 168, 15 May 2017, Pages 685-697
نویسندگان
Michael I. Okereke, C. Paul Buckley, Ambrose I. Akpoyomare,