کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
822608 906800 2007 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Assessment of compressive properties of high performance organic fibers
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Assessment of compressive properties of high performance organic fibers
چکیده انگلیسی

The compressive properties of five high performance organic fibers with varying degrees of lateral molecular interactions have been analyzed. A novel micro-mechanical technique applies an axial compressive load on a segment of free fiber in order to quantify the axial compressive modulus of single filaments. The data reduction methodology used in the analysis accounts for fiber deviations from a perfectly vertical column through the use of Southwell plots. The resulting ratios of axial compressive to tensile modulus show values ranging between 0.3 and 1.0, depending on the type and degree of intermolecular interactions present in the fiber. Heat treatment of M5 fiber provides enhanced lateral interactions and improved molecular alignment that maintain molecular orientation during compressive deformation, resulting in the compressive modulus of M5 heat treated being statistically equal to its tensile modulus. Fibers lacking strong lateral interactions show considerable damage resulting from axial compressive deformations.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Science and Technology - Volume 67, Issue 13, October 2007, Pages 2786–2794
نویسندگان
, , ,