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ASTM D5251-05

(Practice)

Standard Practice for the Operation of the Tetrapod Walker Drum Tester (Withdrawn 2014)

Standard Practice for the Operation of the Tetrapod Walker Drum Tester (Withdrawn 2014)

SIGNIFICANCE AND USE
This equipment may be used to bring about the changes in texture on the surface of pile floor covering caused by mechanical action.
SCOPE
1.1 This practice describes the equipment and operation of the Tetrapod Walker for testing pile floor coverings with a thickness of 20 mm (0.8 in.) or less because thicker materials impede proper operation of the tumbler.
1.2 This practice is applicable for use in testing unused pile floor covering of all types. It is not applicable for use in testing used pile floor covering.
1.3 The values stated in either acceptable SI units or in other units shall be regarded separately as the standard. The values stated in each system may not be exact equivalents; therefore, each system must be used independently of the others, without combining values in any way. In case of referee decisions, the SI units shall prevail.
This practice 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 practice to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
WITHDRAWN RATIONALE
This practice describes the equipment and operation of the Tetrapod Walker for testing pile floor coverings with a thickness of 20 mm (0.8 in.) or less because thicker materials impede proper operation of the tumbler.
Formerly under the jurisdiction of Committee D13 on Textiles, this practice was withdrawn in January 2014 in accordance with section 10.6.3 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the end of the eighth year since the last approval date.

General Information

Status
Withdrawn
Publication Date
28-Feb-2005
Withdrawal Date
12-Jan-2014
ICS
97.150 - Floor coverings
Technical Committee
D13 - Textiles
Drafting Committee
D13.21 - Pile Floor Coverings
Current Stage
Ref Project

Relations

Replaces
ASTM D5251-98a(2003) - Standard Practice for the Operation of the Tetrapod Walker Drum Tester
Effective Date
01-Mar-2005
Referred By
ASTM D6719-22e1 - Standard Guide for Standard Test Methods and Practices for Evaluating Pile Yarn Floor Covering
Effective Date
01-Mar-2005
Referred By
ASTM F1551-09(2017) - Standard Test Methods for Comprehensive Characterization of Synthetic Turf Playing Surfaces and Materials
Effective Date
01-Mar-2005
Referred By
ASTM D5684-19a - Standard Terminology Relating to Pile Floor Coverings
Effective Date
01-Mar-2005

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ASTM D5251-05 - Standard Practice for the Operation of the Tetrapod Walker Drum Tester (Withdrawn 2014)ASTM D5251-05 - Standard Practice for the Operation of the Tetrapod Walker Drum Tester (Withdrawn 2014)
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ASTM D5251-05 - Standard Practice for the Operation of the Tetrapod Walker Drum Tester (Withdrawn 2014)
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D5251 − 05
StandardPractice for
1
the Operation of the Tetrapod Walker Drum Tester
This standard is issued under the fixed designation D5251; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3.2 For all other terminology related to textiles, see Termi-
nology D123.
1.1 This practice describes the equipment and operation of
the Tetrapod Walker for testing pile floor coverings with a
4. Summary of Practice
thickness of 20 mm (0.8 in.) or less because thicker materials
4.1 The specimen is secured as the lining of a rotatable
impede proper operation of the tumbler.
drum with the pile surface exposed. A four legged metal
1.2 This practice is applicable for use in testing unused pile
casting (tetrapod) `walks’ on the pile surface of the specimen
floor covering of all types. It is not applicable for use in testing
as it is tumbled in the drum. The drum is rotated about its
used pile floor covering.
longitudinal axis for a specified number of revolutions.
1.3 ThevaluesstatedineitheracceptableSIunitsorinother
5. Significance and Use
units shall be regarded separately as the standard. The values
stated in each system may not be exact equivalents; therefore,
5.1 This equipment may be used to bring about the changes
each system must be used independently of the others, without
in texture on the surface of pile floor covering caused by
combining values in any way. In case of referee decisions, the
mechanical action.
SI units shall prevail.
6. Apparatus, Material, and Reagent
1.4 This practice does not purport to address all of the
3
safety concerns, if any, associated with its use. It is the 6.1 Tetrapod Tumbler Tester
responsibility of the user of this practice to establish appro- 6.1.1 Drum—Constructed of a rigid material and capped by
priate safety and health practices and determine the applica- a lid that is firmly secured. Each drum is equipped with two
bility of regulatory limitations prior to use. springs to hold the test specimen in place during testing. The
inner dimensions of the drum are as follows:
2. Referenced Documents
Diameter = 205± 5 mm (8.0 ± 0.2 in.)
2
Height = 190 ± 5 mm (7.6 ± 0.2 in.)
2.1 ASTM Standards:
D123 Terminology Relating to Textiles 6.1.2 Tetrapod Walker—A metal casting, tetrahedral in
D1776 Practice for Conditioning and Testing Textiles shape, with four legs placed equidistant from one another. For
D5684 Terminology Relating to Pile Floor Coverings example, the outermost points correspond to the points on an
equilateral tetrahedron and the large angle between any two
3. Terminology
legs is 2 rad (109.5°). Each leg shall have a replaceable plastic
foot at the end. The free standing height of the tetrapod with 3
3.1 For all terminology related to Pile Floor Coverings, see
of the 4 plastic feet in one plane is 125 62mm(5 6 0.1 in.).
Terminology D5684.
The total mass of the tetrapod including the feet is 1000 6 2.5
3.1.1 The following terms are relevant to this standard:
g (2.25 6 0.21 lb). The minimum hardness of the plastic feet
carpet, finished, finished pile yarn floor covering, floor
supplied by the manufacturer shall be 75 6 5 Type A
covering, lengthwise direction, pile, pile lay, pile yarn floor
durometer.
covering, pitch, practice, primary backing, secondary backing,
6.1.3 Driving System—Cradles a drum on rollers and keeps
textile floor covering, texture, tufted fabric.
the axis of the drum level, rotates at 5.2 6 0.2 rad/s (50 6 2
rpm) and has a counter that can be preset to stop the drum after
1
ThispracticeisunderthejurisdictionofASTMCommitteeD13onTextilesand
any number of revolutions. Drive systems that do not reverse
is the direct responsibility of Subcommittee D13.21 on Pile Floor Coverings.
shall have the direction of rotation shown on the drum.
Current edition approved March 1, 2005. Published April 2005. Originally
approved in 1992. Last previous edition approved in 2003 as D5251 – 98a(2003).
DOI: 10.1520/D5251-05.
2 3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Suitable apparatus is available from the Wira Instrumentation, 3 Water Lane,
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Bradford BD1 2JL, England; Lawson Hemphill Sales, Inc., P.O. Box 6388,
Standards volume information, refer to the standard’s Document Summary page on Spartanburg, SC; Williams Asselin, Inc., 7774 Perras Blvd., Montreal, Quebec,
the ASTM website. Canada H1E 5B2.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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SIGNIFICANCE AND USE
5.1 The determination of dimensional change of pile yarn floor covering is useful in quality and cost control during manufacture of pile yarn floor covering. The appearance and performance may be affected by the changes in the dimensions of pile yarn floor covering. This test method is considered satisfactory for acceptance testing of commercial shipment because current estimates of between laboratory precision are acceptable, and this method is commonly used in the trade for acceptance testing.  
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SIGNIFICANCE AND USE
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Standard Test Method for Resistance to Delamination of the Secondary Backing of Pile Yarn Floor Covering

SIGNIFICANCE AND USE
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5.3 This test method is useful to evaluate quality and cost control during the manufacture of pile yarn floor covering. Both appearance and performance of the pile floor covering can be affected by delamination of the secondary backing.
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    sale 15% off
  • Standard
    4 pages
    English language
    sale 15% off