کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
777167 1463844 2007 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mean stress/strain effect on fatigue behavior of an epoxy resin
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Mean stress/strain effect on fatigue behavior of an epoxy resin
چکیده انگلیسی

Mean stress/strain effect on the fatigue life of an Epon 826/Epi-Cure Curing Agent 9551 epoxy system has been investigated by carrying out series uniaxial fatigue tests with four different mean strain ratios under strain-range-controlled mode. Quantitative analysis of the mechanical properties, such as mean stress relaxation, evolution of stress range and strain energy density, have been performed based on the stress–strain data recorded by a non-contact real-time strain measurement and control system. Mean stress/strain functions have been introduced into the equivalent damage parameters to include the mean stress/strain effect on the fatigue life of the epoxy polymer material. The procedure to characterize the mean stress/strain functions has been demonstrated and material constants were calibrated in the case of either stress, strain or energy approach, respectively. Good agreement can be seen between the predictions and the test data.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Fatigue - Volume 29, Issue 12, December 2007, Pages 2180–2190
نویسندگان
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