Detection of necking deformation along polypropylene fibres axis at low draw ratios using multiple-beam microinterferometry

A. A. Hamza, A. E. Belal, T. Z.N. Sokkar, H. M. El-Dessouky, K. M. Yassien

Research output: Contribution to journalArticle

7 Citations (Scopus)


A modified drawing device attached with an automated system for producing multiple-beam Fizeau fringes in transmission is used to study the mechanical deformation along polypropylene (PP) fibres at low draw ratios. Two drawing processes are used for drawing PP fibres. In the first process (fast drawing), the necking deformations are formed at draw ratios from 1.2 to 1.9 along the fibre axis. While in the other process (slow/step drawing), these deformations disappeared. The refractive indices calculated at different positions along the fibre axis during the fast- and slow-drawing processes. To overcome the formation of necking deformation along the PP fibres during fast-drawing process, the slow-drawing technique is recommended. Microinterferograms are given for illustration.
Original languageEnglish
Pages (from-to)681-689
Number of pages9
JournalOptics and Laser Technology
Issue number4
Early online date27 Jun 2006
Publication statusPublished - Jun 2007
Externally publishedYes


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