کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9717400 | 1469572 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Anisotropic strain rate effects on the fibre-matrix interface decohesion in sheet moulding compound composites
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Anisotropic strain rate effects on the fibre-matrix interface decohesion in sheet moulding compound composites Anisotropic strain rate effects on the fibre-matrix interface decohesion in sheet moulding compound composites](/preview/png/9717400.png)
چکیده انگلیسی
Material and structure overall response vary significantly under rapid strain as compared to quasi-static loading. The strain rate sensitivity of a discontinuous fibre-reinforced composite was investigated. The composite material consists in a sheet moulding compound (SMC-R26: weight content of 26%) with randomly oriented reinforcement. The specific aim of this study is to develop a multi-scale analyzed methodology in order to understand the physical origin of the strain rate effect. To this task, using a servo-hydraulic machine, monotonic and interrupted tensile tests were performed at different strain rates over a range from 2Â ÃÂ 10â4 to 2Â ÃÂ 102 sâ1 and coupled to scanning electronic microscope observations. The obtained results at macroscopic and the microscopic scale, have shown that SMC-R26 presents a visco-damageable behaviour: damage onset and kinetic are widely sensitive to the strain rate, whereas the load rate effect, if any, is insignificant on the elastic properties. It has been established that the material macroscopic response is widely governed by the fibre-matrix interface failure strength which increases significantly when increasing the strain rate. Moreover, through the analysis of the fibre orientation influence, we have demonstrated that the strain rate effects (a delayed damage onset and a slightly reduced damage accumulation kinetic) are more important when the fibre-matrix interfaces are submitted to a pure normal stress.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Science and Technology - Volume 65, Issues 3â4, March 2005, Pages 387-393
Journal: Composites Science and Technology - Volume 65, Issues 3â4, March 2005, Pages 387-393
نویسندگان
Zouhaier Jendli, Joseph Fitoussi, Fodil Meraghni, Didier Baptiste,