کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
278788 1430307 2010 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Impact of thermal loads on interfacial debonding in FRP strengthened beams
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Impact of thermal loads on interfacial debonding in FRP strengthened beams
چکیده انگلیسی

The effect of thermal loads on the debonding mechanisms in beams strengthened with externally bonded composite materials is analytically investigated. The analytical approach adopts a high-order stress analysis model and a fracture mechanics model that uses the concept of the energy release rate through the thermo-mechanical form of the J-integral. The two models are combined to synthesize the relation between the energy release rate, the mechanical loads, the thermal loads, and the interfacial crack length simulating the thermo-mechanical debonding process. The model is supported through comparison with experimental results taken from the literature. The comparison quantifies and explains various phenomena observed in the experiments and mainly the non-monotonic dependency of the debonding failure load on the temperature. The impact of the temperature on the interfacial stresses and on the stability of the debonding process is also studied. Finally, the effect of an uniform thermal load on the debonding behavior of a strengthened beam is studied revealing the impact of the thermal load on the debonding stability and strength characteristics.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Solids and Structures - Volume 47, Issue 24, 1 December 2010, Pages 3234–3244
نویسندگان
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