کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
781002 1463789 2012 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Multiaxial fatigue behaviour of GFRP with evenly distributed or accumulated voids monitored by various NDT methodologies
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Multiaxial fatigue behaviour of GFRP with evenly distributed or accumulated voids monitored by various NDT methodologies
چکیده انگلیسی

The effect of evenly distributed voids (dv) and regions of large accumulated voids (lav) on damage evolution and fatigue life during biaxial cyclic loading is studied. Various non-destructive test methods (thermography, microscopy and optical fracture analysis with high-speed photography) are presented for monitoring the void formation, multiaxial fatigue damage mechanisms and final failure process in glass-fibre reinforced plastics (GFRPs) manufactured by a filament winding machine. In addition, air-coupled guided wave measurements (non-contact and single-sided configuration) are applied to a subset of composite tubes for detection of voids and for observing the development of fatigue damages initiated by voids. Thermal imaging during cyclic loading reveals large accumulated voids as well. Variations of stiffness degradation, matrix cracking and guided wave velocities caused by finely distributed or accumulated voids are shown. Finally, the detrimental effect of the two types of porosity on the durability of multiaxially loaded composites is illustrated.


► NDT methods are presented for monitoring the void formation and fatigue behaviour.
► Porosity affects the heat flow, air-coupled guided wave measurements and velocities.
► Final failure starts from one of the delaminations caused by accumulated voids.
► The detrimental effect of the two types of porosity on the durability is illustrated.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Fatigue - Volume 43, October 2012, Pages 207–216
نویسندگان
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