کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1581500 | 1514861 | 2008 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of fiber length on mechanical properties and fracture behavior of short carbon fiber reinforced geopolymer matrix composites
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effects of fiber length on mechanical properties and fracture behavior of short carbon fiber reinforced geopolymer matrix composites Effects of fiber length on mechanical properties and fracture behavior of short carbon fiber reinforced geopolymer matrix composites](/preview/png/1581500.png)
چکیده انگلیسی
A kind of sheet-like carbon fiber preform was developed using short fibers (2, 7 and 12Â mm, respectively) as starting materials and used to strengthen a geopolymer. Mechanical properties, fracture behavior, microstructure and toughening mechanisms of the as-prepared composites were investigated by three-point bending test, optical microscope and scanning electron microscopy. The results show that the short carbon fibers disperse uniformly in geopolymer matrix. The Cf/geopolymer composites exhibit apparently improved mechanical properties and an obvious noncatastrophic failure behavior. The composite reinforced by the carbon fibers of 7Â mm in length shows a maximum flexural strength as well as the highest work of facture, which are nearly 5 times and more than 2 orders higher than that of the geopolymer matrix, respectively. The predominant strengthening and toughening mechanisms are attributed to the apparent fiber bridging and pulling-out effect based on the weak fiber/matrix interface as well as the sheet-like carbon fiber preform.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 497, Issues 1â2, 15 December 2008, Pages 181-185
Journal: Materials Science and Engineering: A - Volume 497, Issues 1â2, 15 December 2008, Pages 181-185
نویسندگان
Tiesong Lin, Dechang Jia, Peigang He, Meirong Wang, Defu Liang,