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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    Abstract

    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: Journal 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)
    Division/Department: Materials Science Division, Materials Science Division, Other, Other
    Depositing User: Ms. Alphones Mary
    Date Deposited: 02 May 2006
    Last Modified: 24 May 2010 09:41
    URI: http://nal-ir.nal.res.in/id/eprint/1259

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