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Method for producing multiple fiber data
| Details |
Inventors: Shofner, Frederick M.; Chu, Youe-T; Shofner, Christopher K.; Townes, Mark G.;
Assignee: Zellweger Uster, Inc. (Knoxville, TN)
Primary Examiner: Cuchlinski, Jr.; William A.
Assistant Examiner: Gutierrez; Diego F. F.
Attorney, Agent or Firm: Luedeka, Hodges, Neely & Graham
A method for producing multiple fiber data from a plurality of single fiber tests. A plurality of individual fibers are subjected to tension tests such that the individual fibers are elongated tensioned and broken while characteristics of the fiber are monitored. Multiple fiber data are obtained by testing a number of fibers from a sample and superimposing the graphical representation of tensile characteristics of the individual fibers upon one another to obtain a composite representation which constitutes multiple fiber data. Characteristics of individual fibers which may be combined to obtain a composite representation constituting multiple fiber data include such characteristics as tension, elongation and cross-sectional characteristics of the fiber. |
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DETAILED DESCRIPTION The present invention resides in an apparatus and method for testing of fibers, either individually or in bundles, for the compiling of data relating to characteristics of the fibers as the fibers are tensioned.
One embodiment of the apparatus for testing at least one fiber having a mid-region and two opposite ends includes a hook disposed so that the mid-region of the fiber is positionable over the hook and the fiber ends hang over opposite sides of the hook.
The apparatus also includes clamp means for clamping the ends of the fiber when the fiber is positioned over the hook and translation means for moving the hook and clamp means relative to one another to tension the fiber held therebetween.
Monitor means are associated with the hook and clamp means for monitoring at least one characteristic of the fiber as it is tensioned such as force-elongation, diameter, fineness, count, thickness, etc.
Preferably, test zone environmental control means are provided to control the atmosphere in the immediate near vicinity of the fiber while it is being tested.
An embodiment of the method of the invention includes the steps involved in using the aforedescribed one embodiment of the apparatus.
The fiber is placed so that its mid-portion is positioned across the hook and the fiber ends hang over opposite sides of the hook, and the ends of the fiber are clamped in the clamp means.
The hook and clamp means are subsequently moved relative to one another to tension the fiber held therebetween, and a characteristic of the fiber is monitored as the fiber is tensioned.
In the basic embodiments, force-elongation characteristics are measured.
In another embodiment of the apparatus, the apparatus includes first and second holding means for holding corresponding portions of a fiber and translation means for moving the first and second holding means relative to one another to thereby tension the fiber.
The apparatus also includes electromagnetic radiation means for directing radiation onto the fiber and detector means for measuring extinction due to or the scattered radiation from the fiber
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Optical Systems 
