کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1573224 1514678 2016 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
High temperature digital image correlation evaluation of in-situ failure mechanism: An experimental framework with application to C/SiC composites
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
High temperature digital image correlation evaluation of in-situ failure mechanism: An experimental framework with application to C/SiC composites
چکیده انگلیسی
A high temperature digital image correlation (DIC) technique was developed, which was applied to study the in-situ fracture behavior of a carbon fibre reinforced silicon carbide matrix (C/SiC) composite. The displacement distribution and cracking information of the C/SiC single edge notched beam specimen can be monitored real-time, thanks to the improved DIC technique with special speckle patterns that can reach up to 1600 °C. The results showed that the brittle to ductile transition temperature of C/SiC composites is about 1300 °C. The new failure mechanisms of C/SiC composites at different experimental temperatures were further verified with the aid of X-ray diffraction and scanning electron microscope (SEM) techniques. In addition, the relationships between the fracture toughness, first-crack strength of C/SiC composites and environmental temperature were deduced. The proposed experimental method and testing results may shed some light on assessing the reliability and durability of C/SiC composites at high temperatures.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 665, 17 May 2016, Pages 26-34
نویسندگان
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