Standard Test Method for
Diameter of Wool and Other Animal Fibers Using an OpticalFiber Diameter Analyser:
This standard is issued under the fixed designation D 6500; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.INTRODUCTIONInstruments based on image analysis have been designed to reduce the level of operator skillrequired and to speed up the measurement process while concurrently maintaining acceptable levelsof precision and accuracy. An additional advantage of image analysis instruments is the ability of theoperator to see the measurement points and to audit the process, if required, though this is not carriedout during routine measurement. As with projection microscope measurements, and the Sirolan-Laserscan, the Optical Fiber Diameter Analyser (OFDA) system covered by this test method providesa count of readings grouped into diameter classes. Because the fiber snippets are measuredautomatically by an optical and image processing system, controls are provided in the imageprocessing software to minimize the inclusion of multiple measurements on the same fiber and falsediameter readings that arise from non-fiber material.
ASTM: D 6500 – 00 PDF Free Download
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