Sunday, July 26, 2009

FIBROGRAPH MEASUREMENT: ASTM D1447-89(1994)e1 Standard Test Method

This test method covers the measurement of the length and length uniformity of cotton fibers by use of the Fibrograph. The test method is applicable to fibers taken from raw or partially processed cotton or some types of cotton waste, but not to fibers from blends of cotton with other fibers or to fibers recovered from cotton yarns or fabrics.
This test method covers procedures for all models of the Digital Fibrograph, hereafter referred to as Fibrograph.
Fibro graph measurements provide a relatively fast method for determining the length uniformity of the fibers in a sample of cotton in a reproducible manner.
Results of fibro graph length test do not necessarily agree with those obtained by other methods for measuring lengths of cotton fibers because of the effect of fiber crimp and other factors.
Fibro graph tests are more objective than commercial staple length classifications and also provide additional information on fiber length uniformity of cotton fibers. The cotton quality information provided by these results is used in research studies and quality surveys, in checking commercial staple length classifications, in assembling bales of cotton into uniform lots, and for other purposes. Fibro graph measurements are based on the assumptions that a fiber is caught on the comb in proportion to its length as compared to total length of all fibers in the sample and that the point of catch for a fiber is at random along its length.

More On: FIBRE FINENESS

No comments:

Post a Comment