کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
767199 1463125 2013 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Interlaminar Mode I crack growth energy release rate of carbon/carbon composites
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Interlaminar Mode I crack growth energy release rate of carbon/carbon composites
چکیده انگلیسی

The interlaminar Mode I crack propagation in a twill weave carbon/carbon composite was investigated using the double cantilever beam test. Interlaminar fracture occurred at the fibre–matrix interface between the plies and multiple small delaminations apart from the main crack were observed. Critical energy release rates were calculated using six different methods in order to evaluate their suitability to encounter the particular interlaminar properties of C/C composites. One method covered the integration of the load–displacement curve while the other methods considered the compliance of the cantilever arms also being subjected to deviations from the elementary beam theory. The modified compliance calibration method gives the most conservative estimation of the critical energy release rate, while the area integration method is also applicable to specimens with secondary cracks.

Figure optionsDownload as PowerPoint slideHighlights
► We investigate the interlaminar crack growth of carbon/carbon composites.
► Composites tend to interlaminar crack branching.
► R-curve behaviour is observed due to crack bridging by fibres and matrix fragments.
► Critical energy release rate from compliance will give conservative results.
► Integration of load–displacement curve is applicable to multiply-cracked samples.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Fracture Mechanics - Volume 100, March 2013, Pages 38–51
نویسندگان
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