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ASTM D6614-07

(Test Method)

Standard Test Method for Stretch Properties of Textile Fabrics - CRE Method

Standard Test Method for Stretch Properties of Textile Fabrics - CRE Method

SIGNIFICANCE AND USE
This method is used to determine the stretch and growth properties which a garment made of the fabric may be expected to exhibit during use.
This is a new method and therefore the history of data is very small, however the excellent agreement of between-laboratory data suggest this method may be considered for acceptance testing of commercial shipments.
5.2.1 If there are differences of practical significance between reported test results for two laboratories (or more), comparative test should be performed to determine if there is a statistical bias between them, using competent statistical assistance. As a minimum, samples used for such comparative tests should be as homogeneous as possible, drawn from the same lot of material as the samples that resulted in disparate results during initial testing, and randomly assigned in equal numbers to each laboratory. Other fabrics with established test values may also be used for these comparative tests. The test results from the laboratories involved should be compared using a statistical test for unpaired data, at a probability level chosen prior to the testing series. If bias is found, either its cause must be found and corrected, or future test results must be adjusted in consideration of the known bias.
SCOPE
1.1 This test method covers the determination of the amount of fabric stretch and fabric growth after a specified extension and held for a specified time.
1.2 While this method can be used for any fabric, knit fabrics having high stretch are better measured by test method D 2594.
1.3 This test method should not be used to measure the breaking strength and elongation of woven fabrics, which is covered in Test Methods D 5034 and D 5035.
1.4 The values listed in either SI units or inch-pound units are to be regarded separately as the standard. Within the text, the inch-pound units are shown in parentheses. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with specification.
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.

General Information

Status
Historical
Publication Date
30-Jun-2007
ICS
59.080.30 - Textile fabrics
Technical Committee
D13 - Textiles
Drafting Committee
D13.59 - Fabric Physical Test Methods A
Current Stage
Ref Project

Relations

Replaces
ASTM D6614-00 - Standard Test Method for Stretch Properties of Textile Fabrics - CRE Method
Effective Date
01-Jul-2007
Replaced By
ASTM D6614-07(2011) - Standard Test Method for Stretch Properties of Textile Fabrics - CRE Method
Effective Date
01-May-2011
Referred By
ASTM D2594/D2594M-21 - Standard Test Method for Stretch Properties of Knitted Fabrics Having Low Power
Effective Date
01-Jul-2007

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ASTM D6614-07 - Standard Test Method for Stretch Properties of Textile Fabrics - CRE MethodASTM D6614-07 - Standard Test Method for Stretch Properties of Textile Fabrics - CRE Method
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ASTM D6614-07 - Standard Test Method for Stretch Properties of Textile Fabrics - CRE Method
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Standards Content (Sample)

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:D6614–07
Standard Test Method for
1
Stretch Properties of Textile Fabrics – CRE Method
This standard is issued under the fixed designation D6614; 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 D5035 Test Method for Breaking Force and Elongation of
Textile Fabrics (Strip Method)
1.1 Thistestmethodcoversthedeterminationoftheamount
of fabric stretch and fabric growth after a specified extension
3. Terminology
and held for a specified time.
3.1 For all terminology relating to D13.59, Fabric Test
1.2 While this method can be used for any fabric, knit
Methods, General, refer to Terminology D4850.
fabrics having high stretch are better measured by test method
3.2 For all terminology related to D13.58, Yarns and Fiber,
D2594.
see Terminology D4849.
1.3 This test method should not be used to measure the
3.2.1 The following terms are relevant to this standard:
breaking strength and elongation of woven fabrics, which is
fabric stretch, fabric growth, stretch yarn.
covered in Test Methods D5034 and D5035.
3.3 For all other terminology related to textiles, refer to
1.4 The values listed in either SI units or inch-pound units
Terminology D123.
are to be regarded separately as the standard. Within the text,
the inch-pound units are shown in parentheses. The values
4. Summary of Test Method
stated in each system are not exact equivalents; therefore, each
4.1 Fabric Stretch and Fabric Growth—Aspecified load is
system shall be used independently of the other. Combining
applied to a fabric specimen, using a constant rate of extension
values from the two systems may result in nonconformance
tensile tester at a prescribed rate of extension.After holding at
with specification.
the specified load for a predetermined time, the length is
1.5 This standard does not purport to address all of the
measured.Theloadisremovedfromthespecimenandallowed
safety concerns, if any, associated with its use. It is the
to relax for a specified time. A small amount of force, enough
responsibility of the user of this standard to establish appro-
to remove any wrinkles or folds, is applied and the specimen
priate safety and health practices and determine the applica-
length measured. The amount of fabric stretch is calculated
bility of regulatory limitations prior to use.
from the difference in length prior to load and under load.
2. Referenced Documents Fabric growth is calculated from the difference in length prior
2 to loading and after relaxation.
2.1 ASTM Standards:
D123 Terminology Relating to Textiles
5. Significance and Use
D1776 Practice for Conditioning and Testing Textiles
5.1 This method is used to determine the stretch and growth
D2594 Test Method for Stretch Properties of Knitted Fab-
propertieswhichagarmentmadeofthefabricmaybeexpected
rics Having Low Power
to exhibit during use.
D4849 Terminology Related to Yarns and Fibers
5.2 This is a new method and therefore the history of data is
D4850 Terminology Relating to Fabrics and Fabric Test
very small, however the excellent agreement of between-
Methods
laboratory data suggest this method may be considered for
D5034 Test Method for Breaking Strength and Elongation
acceptance testing of commercial shipments.
of Textile Fabrics (Grab Test)
5.2.1 If there are differences of practical significance be-
tween reported test results for two laboratories (or more),
1
This test method is under the jurisdiction ofASTM Committee D13 onTextiles
comparative test should be performed to determine if there is a
and is the direct responsibility of Subcommittee D13.59 on Fabric Test Methods,
statistical bias between them, using competent statistical assis-
General.
tance.As a minimum, samples used for such comparative tests
Current edition approved July 1, 2007. Published August 2007. Originally
should be as homogeneous as possible, drawn from the same
approved in 2000. Last previous edition approved in 2000 as D6614–00. DOI:
10.1520/D6614-07.
lot of material as the samples that resulted in disparate results
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
during initial testing, and randomly assigned in equal numbers
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
to each laboratory. Other fabrics with established test values
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. may also be used for these comparative tests. The test results
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

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5.1 Acceptance Testing—this test method is not considered satisfactory for acceptance testing of commercial shipments of fabric. The between-laboratory precision of this test method is poor and, because of the nature of abrasion testing itself, technicians frequently fail to obtain results in agreement on the same type of testing instrument, both within and between laboratories. Although this test method is not recommended for acceptance testing, it is useful because it is used widely, especially outside the United States.  
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1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
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5.1 Acceptance Testing—This method of testing fabrics resistance to pilling is not recommended for acceptance testing. If it is used for acceptance testing, it should be used with caution because interlaboratory data are not available. In some cases the purchaser or supplier may have to test a commercial shipment of one or more specific materials by the best available method even though the method has not been recommended for acceptance testing. Although this test method is not recommended for acceptance testing, it is useful because it is used widely outside the United States.  
5.2 If there is a disagreement arising from differences in values reported by the purchaser and the supplier when using this test method, the statistical bias, if any, between the laboratory of the purchaser and the laboratory of the supplier should be determined with comparison being based on testing specimens randomly drawn from one sample of material of the type being evaluated. Competent statistical assistance is recommended for the investigation of bias. A minimum of two parties should take a group of test specimens, which are as homogeneous as possible and which are from a lot of material of the type in question. The test specimens then should be assigned randomly in equal numbers to each laboratory for testing. The average test results from the two laboratories should be compared using an acceptable statistical protocol and probability level chosen by the two parties before the testing is started. Appropriate statistical disciplines for comparing data must be used when the purchaser and supplier cannot agree. If a bias is found, either its cause must be found and corrected, or the purchaser and the supplier must agree to interpret future results with consideration for the known bias.  
5.3 The pilling of textile fabrics is a very complex property because it is affected by many factors that include type of fiber or blends, fiber dimensions, yarn and fabric construction, and fabric f...
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1.1 This test method covers the determination of the resistance to the formation of pills and other related surface changes on textile fabrics using the Martindale tester.
Note 1: For other methods, if testing the pilling resistance of textiles, refer to Test Methods D3511/D3511M, D3512/D3512M, and D3514.  
1.2 This test method is generally applicable to knit, woven, and nonwoven fabrics; however, material thickness may limit suitability for testing due to specimen holder capacity.  
1.3 The fabric may be laundered or dry cleaned before testing as agreed upon among interested parties.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
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  • Standard
    5 pages
    English language
    sale 15% off