ASTM D1577-07(2012)
Standard Test Methods for Linear Density of Textile Fibers

Standard No.

ASTM D1577-07(2012)

Release Date

2007

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM D1577-07(2018)

Latest

ASTM D1577-07(2018)

Scope

Option A for bundle weighing of Test Method D1577 is used in the trade for acceptance testing of commercial shipments. Option B for single-fiber weighing and Option C for the vibroscope may be used for acceptance testing (see Section 37); however, caution is advised when using Option B or Option C because between-laboratory precision information is incomplete. Comparative tests as directed in 4.1.1 may be advisable.

In case of dispute arising from differences in reported test results when using Test Method D1577 for acceptance testing of commercial shipments, the purchaser and the supplier should conduct comparative tests to determine if there is a statistical bias between their laboratories. Competent statistical assistance is recommended for the investigation of bias. As a minimum, the two parties should take a group of samples that are as homogeneous as possible and that are from a lot of material of the type in question. These samples should then be randomly assigned in equal numbers to each laboratory for testing. The average results from the two laboratories should be compared using the appropriate statistical analysis and a probability level chosen by the two parties before testing is begun. If a bias is found, either the cause must be found and corrected or the purchaser and the supplier must agree to interpret future test results for that material with consideration to the known bias.

Option A for bundle weighing is generally considered to be the referee procedure for acceptance testing.

Option A is not recommended for measurement of linear density of blends of production fibers having different nominal linear densities.

The accuracy of the linear density values obtained by Options A and B is dependent upon the accuracy with which the fibers can be cut and weighed.

Note 28212;On short staple fiber, an accuracy in cutting of 1.0 % is difficult to obtain. This problem is further complicated if crimp is present in the fibers.

The accuracy of weighing can be controlled by the number of fibers composing the bundle. However, with short fiber of low linear density the number of fibers to be counted becomes prohibitive unless the bundle mass is kept low.

Options A and B are fundamental procedures which are used to standardize the vibroscope equipment used in Options C1 and C2.

Test Method Options B and C are most useful for the measurement of linear density of single fibers when further tests upon the same test specimen are required, for example, tension tests and adjustment of the data obtained for the linear density of the test specimen. These options offer advantages in accuracy and ease of operations over calculation from specific gravity and microscopically measured cross-sectional area.

Additional information specific to Option C is in Section 26.

1.1 These test methods cover the measurement of mass per unit length (linear density) of textile fibers and filaments. Direct weighing and vibroscope procedures with modifications for crimped and uncrimped fibers are included. The options and sections are listed below.

	Option	Sections
	AFiber Bundle Weighing	7-15
	BSingle-Fiber Weighing	16-23
	CVibroscope, General	24-30
		35 and 36
ASTM D1577-07(2012) Referenced Document ASTM D1059 Standard Test Method for Yarn Number Based on Short-Length Specimens ASTM D123 Standard Terminology Relating to Textiles ASTM D1282 Standard Test Method for Resistance to Airflow as an Indication of Average Fiber Diameter of Wool Top, Card Sliver, and Scoured Wool ASTM D1769 Method of Test for Linear Density of Cotton Fibers (Array Sample) ASTM D1776 Standard Practice for Conditioning and Testing Textiles ASTM D1907 Standard Test Method for Linear Density of Yarn (Yarn Number) by the Skein Method ASTM D2130 Standard Test Method for Diameter of Wool and Other Animal Fibers by Microprojection ASTM D2257 Standard Test Method for Extractable Matter in Textiles ASTM D2258 Standard Practice for Sampling Yarn for Testing ASTM D2480 Test Method for Maturity Index and Linear Density of Cotton Fibers by the Causticaire Method ASTM D2904 Standard Practice for Interlaboratory Testing of a Textile Test Method that Produces Normally Distributed Data ASTM D3333 Standard Practice for Sampling Manufactured Staple Fibers, Sliver, or Tow for Testing ASTM D4849 Standard Terminology Related to Yarns and Fibers ASTM D5103 Standard Test Method for Length and Length Distribution of Manufactured Staple Fibers (Single-Fiber Test) ASTM D629 Standard Test Methods for Quantitative Analysis of Textiles ASTM D1577-07(2012) history 2018 ASTM D1577-07(2018) Standard Test Methods for Linear Density of Textile Fibers 2007 ASTM D1577-07(2012) Standard Test Methods for Linear Density of Textile Fibers 2007 ASTM D1577-07 Standard Test Methods for Linear Density of Textile Fibers 2001 ASTM D1577-01 Standard Test Methods for Linear Density of Textile Fibers 1996 ASTM D1577-96 Standard Test Methods for Linear Density of Textile Fibers Copyright ©2024 All Rights Reserved