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Textile Research Journal, Vol. 26, No. 8, 606-617 (1956)
DOI: 10.1177/004051755602600804

Definition and Measurement of Crimp of Textile Fibers

Ernst Alexander

Institute for Fibers and Forest Products Research, Ministry of Agriculture, Israel

Menachem Lewin

Institute for Fibers and Forest Products Research, Ministry of Agriculture, Israel

Helmut V. Muhsam

Institute for Fibers and Forest Products Research, Ministry of Agriculture, Israel

Miriam Shiloh

Institute for Fibers and Forest Products Research, Ministry of Agriculture, Israel

Two fundamental concepts are defined, the effective crimp diameter and the effective wave number. The corresponding figures for these concepts are calculated from the measurements of the width values of the plane projection of a rotating fiber and from the measurements of the crimp ratio. These figures are obtained for a fiber under a certain load, and take into account the spatial nature and the statistical aspect of crimp. An effective curvature is determined as well. Results are obtained for 90's Merino and 52's Scotch-Blackface wool fibers. It is shown that the higher quality wool fibers are associated with lower effective crimp diameters and higher effective wave numbers.


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On Tensile Properties of Alkali-Treated Jute Fibers: Institute for Fibres and Forest Products Research Jerusalem, Israel May 31, 1960
Textile Research Journal, October 1, 1960; 30(10): 798 - 800.
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