کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
818352 1469438 2013 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Study of stress relaxation in polytetrafluoroethylene composites by cylindrical macroindentation
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Study of stress relaxation in polytetrafluoroethylene composites by cylindrical macroindentation
چکیده انگلیسی
In the present work, the time-dependent mechanical behavior of three materials from the fluorocarbon family, including PTFE without filler, 15 vol.% regenerated graphite particles-filled PTFE, and 32 vol.% carbon and 3 vol.% graphite particles-filled PTFE, was investigated using cylindrical macroindentation. Indentation relaxation experiments with a cylindrical flat-tip indenter having a diameter of 1 mm were performed at three different strain levels. The generalized Maxwell model in terms of the Prony series and a time-dependent solution based on the power-law creep equation were used to model the viscoelastic response and to extract the time-dependent properties. The stress relaxation properties were found to improve with the addition of fillers. The unfilled PTFE exhibited the lowest stress-relaxation properties, whereas the 32 vol.% carbon and 3 vol.% graphite particles-filled PTFE composite showed the highest stress-relaxation properties.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Part B: Engineering - Volume 47, April 2013, Pages 298-307
نویسندگان
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