ASTM D6674-01(2013)
(Guide)Standard Guide for Proficiency Test Program for Fabrics
Standard Guide for Proficiency Test Program for Fabrics
SIGNIFICANCE AND USE
4.1 Proficiency testing is a means of securing estimates of the variability of results obtained by different laboratories testing homogeneous materials taken from batch samples when following procedures prescribed in a specific test method.
4.1.1 For the purpose of this guide, homogeneous materials are considered to be laboratory samples cut from the same batch sample (roll or garment lot) and selected at random for the participant laboratories.
4.2 This proficiency test program is to be considered a full-scale interlaboratory test, in which a reasonably large number of laboratories participate by testing a series of materials using one or more operators per laboratory and report the data for analysis.
4.2.1 For the purposes of this guide, Full Scale Laboratory Test is defined in Practice D2904. This is not to be confused with the full scale testing terminology and definitions which appear in other test methods, such as flammability, that describe the size of the specimens being tested.
4.3 The statistical data generated by this practice provide information needed to exhibit participation in a formal proficiency test study.
4.4 All data are submitted to the program coordinator at ASTM Headquarters for the preparation and distribution of the proficiency testing program reports. All laboratory data are confidential with no disclosure of lab identity except for each participant's own laboratory. Published reports contain all laboratory test data (coded), statistical analysis of test data, charts plotting test results versus lab code, and other information.
SCOPE
1.1 This guide outlines the Proficiency Test Program for Fabrics. Elements for planning the proficiency test program, selecting the sample fabrics to be used, the testing protocol, and the calculations for the data to be reported are included in this practice.
1.2 The planning of the proficiency test program requires a general knowledge of testing of textile fabrics and statistical principles included in the analysis of the data.
1.3 This guide is designed to meet the quality systems proficiency and competence requirements of participating laboratories. This program is not accredited to any international standard.
1.4 The instructions in this guide follow the logic of full scale laboratory tests as described in Practice D2904 and Guide E1301, except with this new guide placing its emphasis on proficiency testing.
1.5 Procedures given in this guide are applicable to methods based on the measurement of discrete measurement data and grades or scores.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:D6674 −01 (Reapproved 2013)
Standard Guide for
Proficiency Test Program for Fabrics
This standard is issued under the fixed designation D6674; 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.
INTRODUCTION
Proficiency testing is the use of interlaboratory test comparisons to determine the performance of
individual laboratories for specific tests and to monitor the consistency and comparability of a
laboratory’s test data.
Participation in proficiency testing programs provides laboratories with an objective means of
assessing and demonstrating the reliability of the data they are producing.Although there are several
types of proficiency testing programs, they all share the common feature of the comparison of test
results obtained by two or more laboratories.
One of the main uses of proficiency testing programs is to assess laboratories’ ability to perform
tests competently. This will involve the preparation of the test specimens, calibrating or validating the
testing equipment, performing the tests and reporting the data.
Bodies assessing the technical competence of testing laboratories normally require or expect
satisfactory participation in proficiency testing as evidence of a laboratory’s ability to produce reliable
test results.
1. Scope 2. Referenced Documents
1.1 This guide outlines the Proficiency Test Program for 2.1 ASTM Standards:
Fabrics. Elements for planning the proficiency test program, D123 Terminology Relating to Textiles
selecting the sample fabrics to be used, the testing protocol, D737 Test Method for Air Permeability of Textile Fabrics
and the calculations for the data to be reported are included in D1230 Test Method for Flammability of Apparel Textiles
this practice. (Withdrawn 2010)
D2261 Test Method for Tearing Strength of Fabrics by the
1.2 The planning of the proficiency test program requires a
Tongue (Single Rip) Procedure (Constant-Rate-of-
general knowledge of testing of textile fabrics and statistical
Extension Tensile Testing Machine)
principles included in the analysis of the data.
D2904 Practice for Interlaboratory Testing of a Textile Test
1.3 This guide is designed to meet the quality systems
Method that Produces Normally Distributed Data (With-
proficiencyandcompetencerequirementsofparticipatinglabo-
drawn 2008)
ratories. This program is not accredited to any international
D2906 Practice for Statements on Precision and Bias for
standard.
Textiles (Withdrawn 2008)
1.4 The instructions in this guide follow the logic of full D3775 Test Method forWarp (End) and Filling (Pick) Count
of Woven Fabrics
scalelaboratorytestsasdescribedinPracticeD2904andGuide
D5034 TestMethodforBreakingStrengthandElongationof
E1301, except with this new guide placing its emphasis on
proficiency testing. Textile Fabrics (Grab Test)
D5035 Test Method for Breaking Force and Elongation of
1.5 Proceduresgiveninthisguideareapplicabletomethods
Textile Fabrics (Strip Method)
based on the measurement of discrete measurement data and
D6545 Test Method for Flammability of Textiles Used in
grades or scores.
1 2
This guide is under the jurisdiction of ASTM Committee D13 on Textiles and For referenced ASTM standards, visit the ASTM website, www.astm.org, or
is the direct responsibility of Subcommittee D13.60 on Fabric Test Methods, contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Specific. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved July 1, 2013. Published September 2013. Originally the ASTM website.
ε1 3
approved in 2001. Last previous edition approved in 2009 as D6674–01(2009) . The last approved version of this historical standard is referenced on
DOI: 10.1520/D6674-01R13. www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D6674−01 (2013)
Children’s Sleepwear 5.2 Flammability Test Program—At least seven types of
E1301 Guide for Proficiency Testing by Interlaboratory fabrics are to be available for the study, not all of which will be
Comparisons (Withdrawn 2012) used at the same time.The materials shall be described by fiber
type, construction type (woven, knit, nonwoven), surface
3. Terminology
characteristicsandfabricweightasdefinedbytheflammability
characteristics. The fabrics to be used for this study shall be
3.1 The following terms are relevant to this standard:
selected by the Subcommittee D13.93. An accredited labora-
accuracy, of a test method; batch sample; bias, in statistics;
tory selected by the Subcommittee D13.93 shall act as the host
calibrate; precision; precision, under conditions of between-
and maintain these fabrics. The host laboratory shall not be
laboratory precision; proficiency testing; program coordinator;
held responsible for the performance of the materials at the
repeatability, in statistics; reproducibility, in statistics; sample;
participant laboratories.
specimen; test result; testing laboratory.
3.2 Fordefinitionsoftextileandstatisticaltermsusedinthis
6. Distribution of Test Materials
practice, and discussions of their use, refer to Terminology
6.1 The proficiency test program is designed for the test
D123 and appropriate textbooks on statistics.
materials to be distributed at a minimum two times each
4. Significance and Use
calendar year—February and August. Each participating labo-
ratory shall apply throughASTM Headquarters for inclusion in
4.1 Proficiency testing is a means of securing estimates of
the program.
the variability of results obtained by different laboratories
testinghomogeneousmaterialstakenfrombatchsampleswhen
6.2 The materials will be distributed by having the host
following procedures prescribed in a specific test method.
laboratory cut fabric samples from each batch roll or garment
4.1.1 For the purpose of this guide, homogeneous materials
lot. The samples will be identified, labeled and mailed to each
are considered to be laboratory samples cut from the same
participating laboratory. ASTM Headquarters will provide
batch sample (roll or garment lot) and selected at random for
detailed instruction sheets and mailing labels to the host
the participant laboratories.
laboratory.
4.2 This proficiency test program is to be considered a
6.3 Instructions for testing, recording data and return; forms
full-scale interlaboratory test, in which a reasonably large
and fabric samples will be mailed together as instructed.
number of laboratories participate by testing a series of
materialsusingoneormoreoperatorsperlaboratoryandreport
7. Selection of Test Methods
the data for analysis.
7.1 For Mechanical Testing—The test methods shall be
4.2.1 For the purposes of this guide, Full Scale Laboratory
selected and monitored by the Subcommittee D13.93. The
Test is defined in Practice D2904. This is not to be confused
protocol of this guide may not include the entire scope of
with the full scale testing terminology and definitions which
methods used for testing fabric, but will include at least one
appear in other test methods, such as flammability, that
mechanical test from the fields used to define woven fabric
describe the size of the specimens being tested.
properties such as construction, air permeability and strength.
4.3 The statistical data generated by this practice provide
Other methods may be added or deleted as directed by D13.93
information needed to exhibit participation in a formal profi-
with input from ASTM staff, participating laboratories, and
ciency test study.
pertinent Sub-Committee.
7.1.1 The methods to be used for this guide are as follows:
4.4 All data are submitted to the program coordinator at
ASTM Headquarters for the preparation and distribution of the D737 Air Permeability of Textile Fabrics
D2261 Tearing Strength By Tongue Method (CRE Type Instrument)
proficiency testing program reports. All laboratory data are
D3775 Fabric Count of Woven Fabric
confidential with no disclosure of lab identity except for each
D5034 Breaking Strength and Elongation of Textile Fabrics (Grab
participant’s own laboratory. Published reports contain a
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