کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
820650 906714 2012 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Experimental observations and numerical simulations of curved crack propagation in laminated fiber composites
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Experimental observations and numerical simulations of curved crack propagation in laminated fiber composites
چکیده انگلیسی

Fracture experiments were carried out on continuous fiber polymer matrix laminated composite panels to investigate cohesive, through-the-thickness crack propagation. The experiments were designed to examine curved cracks, resulting from either eccentric loading or non-symmetric specimen geometry with respect to the starter crack. The constitutive description of the observed complex diffused damage zone, which from a continuum viewpoint may be considered a macroscopic crack, involves complex/evolving traction–separation relations and mode-mixity conditions. This paper presents some relevant experimental investigations and their numerical modeling using the variational multiscale cohesive method developed by Rudraraju et al. [21] which is an effective framework for simulating cohesive crack evolution and thereby predicting the residual strength of cracked composite panels.


► We have presented a validated, mesh-independent method to predict crack growth in a fiber reinforced laminate.
► The method is useful for assessing the structural integrity and damage tolerance of composite structural panels.
► The method uses measurable inputs that can be obtained from standard coupon level tests.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Science and Technology - Volume 72, Issue 10, 8 June 2012, Pages 1064–1074
نویسندگان
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