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  • ASTM
    D1425/D1425M-09 Standard Test Method for Unevenness of Textile Strands Using Capacitance Testing Equipment
    Edition: 2009
    Unlimited Users - 1 Loc per year

Description of ASTM-D1425 2009

ASTM D1425/D1425M-09

Historical Standard: ASTM D1425/D1425M-09 Standard Test Method for Unevenness of Textile Strands Using Capacitance Testing Equipment

SUPERSEDED (see Active link, below)

ASTM D1425 / D1425M

1. Scope

1.1 This test method covers the indirect measurement of evenness (mass variation) of non-conductive textile strands, including top, comber lap, sliver, roving, and yarn produced from staple fibers and continuous filament yarns, by means of capacitance testing equipment.

1.2 Strands made from fiber blends can be tested using this test method only if the different fibers are uniformly distributed throughout the strand.

1.3 The test method provides numeric values for the measurement and evaluation of short-, mid-, and long-term mass variations of the tested strand in terms of frequently occurring faults classified as thin places, thick places, and neps and graphical representations of evenness values in the form of diagram charts, spectrograms, length variation curves, and histograms.

1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

D123 Terminology Relating to Textiles

D1776 Practice for Conditioning and Testing Textiles

D2258 Practice for Sampling Yarn for Testing

D4849 Terminology Related to Yarns and Fibers


strand; textile; unevenness; yarn ; Unevenness; Wool and wool top; Yarn properties; Capacitance; Filament yarn; Knitted textile fabrics; Roving; Sliver; Staple fibers; Textile strands; Tow

ICS Code

ICS Number Code 59.080.50 (Ropes)

DOI: 10.1520/D1425_D1425M-09

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About ASTM

ASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide.