Crystallographic data on axially compressed Kevlar 49 fibres

Iyer, RV and Vijayan, Kalyani and Sooryanarayana, K and Row, TNG (1999) Crystallographic data on axially compressed Kevlar 49 fibres. Bulletin of Materials Science, 22 (1). pp. 1-7. ISSN 0250-4707

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Axially compressed Kevlar 49 fibres have been examined by X-ray diffraction methods. The most prominent effect of axial compression is the anisotropic deformation of the unit cell. Whereas the c-axial length, which corresponds to the chain axis, undergoes contraction, the basal plane dimensions manifest enlargement. The deformations increase with the extent of axial compression. The half-widths and the azimuthal spread of reflections also exhibit changes. The compression induced structural changes provide qualitative support to the experimentally observed reduction in tensile strength and modulus.

Item Type: Article
Additional Information: Copyright for this article belongs to Indian Academy of Sciences
Uncontrolled Keywords: Kevlar;Ultrasonic;Compression;Unit cell;Tensile properties;Deformation
Subjects: CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Depositing User: Ms. Alphones Mary
Date Deposited: 02 May 2006
Last Modified: 24 May 2010 04:11

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