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ASTM D6614-00

(Test Method)

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

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

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 D2594.
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 D5034 and D5035.
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.
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.

General Information

Status
Historical
Publication Date
09-Nov-2000
ICS
59.080.30 - Textile fabrics
Technical Committee
D13 - Textiles
Drafting Committee
D13.59 - Fabric Physical Test Methods A
Current Stage
Ref Project

Relations

Replaced By
ASTM D6614-07 - Standard Test Method for Stretch Properties of Textile Fabrics - CRE Method
Effective Date
01-Jul-2007
Referred By
ASTM D2594/D2594M-21 - Standard Test Method for Stretch Properties of Knitted Fabrics Having Low Power
Effective Date
10-Nov-2000

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ASTM D6614-00 - Standard Test Method for Stretch Properties of Textile Fabrics - CRE MethodASTM D6614-00 - Standard Test Method for Stretch Properties of Textile Fabrics - CRE Method
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ASTM D6614-00 - Standard Test Method for Stretch Properties of Textile Fabrics - CRE Method
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D6614–00
Standard Test Method for
Stretch Properties of Textile Fabrics – CRE Method
This standard is issued under the fixed designation D 6614; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 3.1.1 fabric stretch, n—the increase in length of a specimen
of fabric resulting from a tension applied under specified
1.1 Thistestmethodcoversthedeterminationoftheamount
conditions.
of fabric stretch and fabric growth after a specified extension
3.1.1.1 Discussion—Fabric stretch is usually expressed as a
and held for a specified time.
percentage of the length of the specimen prior to loading.
1.2 While this method can be used for any fabric, knit
3.1.2 fabric growth, n—the difference between the original
fabrics having high stretch are better measured by test method
length of a specimen and its length after the application of a
D 2594.
specified tension for a prescribed time and the subsequent
1.3 This test method should not be used to measure the
removal of the tension.
breaking strength and elongation of woven fabrics, which is
3.1.2.1 Discussion—Fabric growth is usually expressed as a
covered in Test Methods D 5034 and D 5035.
percentage of the length of the specimen prior to loading. (see
1.4 The values listed in either SI units or inch-pound units
also permanent deformation)
are to be regarded separately as the standard. Within the text,
3.1.3 stretch yarn, n—a generic term for filament or spun
the inch-pound units are shown in parentheses. The values
yarns having a high degree of potential elastic stretch and a
stated in each system are not exact equivalents; therefore, each
rapid recovery.
system shall be used independently of the other. Combining
3.1.3.1 Discussion—Stretch yarns are generally produced
values from the two systems may result in nonconformance
by an appropriate combination of deforming, heat setting, and
with specification.
developing treatments to attain elastic properties.
1.5 This standard does not purport to address all of the
3.2 Fordefinitionsofothertextiletermsusedinthismethod,
safety concerns, if any, associated with its use. It is the
refer to Terminology D 123.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
4. Summary of Test Method
bility of regulatory limitations prior to use.
4.1 Fabric Stretch and Fabric Growth—Aspecified load is
2. Referenced Documents applied to a fabric specimen, using a constant rate of extension
tensile tester at a prescribed rate of extension.After holding at
2.1 ASTM Standards:
2 the specified load for a predetermined time, the length is
D 123 Terminology Relating to Textiles
measured.The load is removed from the specimen and allowed
D 1776 Practice for Conditioning and Testing Textiles
to relax for a specified time. A small amount of force, enough
D 2594 Test Methods for Stretch Properties of Knitted
to remove any wrinkles or folds, is applied and the specimen
Fabrics Having Low Power
length measured. The amount of fabric stretch is calculated
D 5034 Test Methods for Breaking Force and Elongation of
from the difference in length prior to load and under load.
Textile Fabrics (Grab Test)
Fabric growth is calculated from the difference in length prior
D 5035 Test Method for Breaking Force and Elongation of
to loading and after relaxation.
Textile Fabrics (Strip Test)
5. Significance and Use
3. Terminology
5.1 This method is used to determine the stretch and growth
3.1 Definitions:
propertieswhichagarmentmadeofthefabricmaybeexpected
to exhibit during use.
This test method is under the jurisdiction ofASTM Committee D13 onTextiles 5.2 This is a new method and therefore the history of data is
and is the direct responsibility of Subcommittee D13.59 on Fabric Test Methods,
very small, however the excellent agreement of between-
General.
laboratory data suggest this method may be considered for
Current edition approved Nov. 10, 2000. Published December 2000.
acceptance testing of commercial shipments.
Annual Book of ASTM Standards, Vol 07.01.
Annual Book of ASTM Standards, Vol 07.02.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D6614
5.2.1 If there are differences of practical significance be- 7.3.5 Ensure specimens are free of folds, creases, or
tween reported test results for two laboratories (or more), wrinkles.Avoid getting oil, water, grease, etc. on the specimen
comparative test should be performed to determine if there is a when handling.
statistical bias between them, using competent statistical assis-
7.3.6 If the fabric has a pattern, ensure that the specimens
tance.As a minimum, samples used for such comparative tests
are a representative sampling of the pattern.
should be as homogeneous as possible, drawn from the same
7.4 Specimen Preparation—As test specimens from each
lot of material as the samples that resulted in disparate results
laboratory sampling unit, proceed as follows:
during initial testing, and randomly assigned in equal numbers
7.4.1 For woven fabrics, cut two strips 65 by 350 mm (2.5
to each laboratory. Other fabrics with established test values
by 14 in.) with the long dimension parallel to the stretch
may also be used for these comparative tests. The test results
direction.
from the laboratories involved should be compared using a
7.4.1.1 Ravel the strips to form test specimens to 50 6 0.5
statistical test for unpaired data, at a probability level chosen
mm (2 6 0.02 in.) width by taking approximately the same
prior to the testing series. If bias is found, either its cause must
number of yarns from each side of the specimen.
be found and corrected, or future test results must be adjusted
7.4.2 For knitted and nonwoven fabrics, cut two test speci-
in consideration of the known bias.
mens, 50 6 0.5 mm (2 6 0.02 in.) wide by 350 mm (14 in.)
with the long dimension parallel to the stretch direction.
6. Apparatus
6.1 Tensile Testing Machine , of the CRE type with capa-
8. Conditioning
bility to maintain a constant load and measurement of the
8.1 Condition each sample as directed in Practice D 1776,
location of the moveable crosshead.
prior to cutting the test specimens.
6.2 Grips and Jaw Faces,aminimumof50mm(2in.)faces
to hold the full width of the specimen.
9. Preparation and Calibration of Test Apparatus
7. Sampling, Selection, and Number of Specimens
9.1 Set-up procedures for machines from different manufac-
7.1 Primary Sampling Unit—Consider rolls, bolts or pieces
turers may vary. Prepare and verify calibration of the tensile
offabric,orcartonsoffabriccomponentsoffabricatedsystems tester using directions supplied b
...

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SIGNIFICANCE AND USE
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Standard Test Method for Stiffness of Fabrics

SIGNIFICANCE AND USE
5.1 In general, these procedures are more suitable for testing woven fabrics than knit fabrics.  
5.2 Both test options in this test method are considered satisfactory for acceptance testing of commercial shipments since current estimates of between-laboratory precision are acceptable and the method is used extensively in the trade for acceptance testing.  
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SCOPE
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1.1.2 Option B—Heart Loop Test, employing the principle of a loop formed in a fabric strip and hung vertically.  
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SIGNIFICANCE AND USE
5.1 This method for the determination of diaphragm bursting strength of knitted, nonwoven and woven fabrics is being used by the textile industry for the evaluation of a wide variety of end uses.  
5.2 In cases where test results obtained using the procedures in Test Method D3786 have not been correlated with actual performance, Test Method D3786 is considered satisfactory for acceptance testing of commercial shipments of textile fabrics for bursting strength since the method has been used extensively in the trade for acceptance testing. In cases where disagreement arising from differences in values reported by the purchaser and the supplier when using Test Method D3786 for acceptance testing, the statistical bias, if any, between the laboratory of the purchaser and the laboratory of the supplier should be determined with comparison based on testing specimens randomly drawn from one sample of material of the type being evaluated.
Note 2: The kind of load transfer and stretch that occur when knitted goods and nonwoven fabrics are worn are prevented by clamping them as described in this method.
SCOPE
1.1 This test method describes the measurement of the resistance of textile fabrics to bursting using a hydraulic or pneumatic diaphragm bursting tester. This test method is generally applicable to a wide variety of textile products.  
1.2 This test method may also be applicable for stretch woven and woven industrial fabrics such as inflatable restraints. As new materials that may exceed the range of the instrument are developed, please refer to the reporting section and consider using Test Methods D3787 or D6797 instead.  
1.3 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.
Note 1: For the measurement of the bursting strength by means of a ball burst mechanism, refer to Test Method D3787.  
1.4 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.  
1.5 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.

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ASTM
ASTM D737-18(2023)(Test Method)
Standard Test Method for Air Permeability of Textile Fabrics

SIGNIFICANCE AND USE
5.1 This test method is considered satisfactory for acceptance testing of commercial shipments since current estimates of between-laboratory precision are acceptable, and this test method is used extensively in the trade for acceptance testing.  
5.1.1 If there are differences of practical significance between reported test results for two laboratories (or more), comparative tests should be performed to determine if there is a statistical bias between them, using competent statistical assistance. As a minimum, ensure the test samples to be used are as homogeneous as possible, are drawn from the material from which the disparate test results were obtained, and are randomly assigned in equal number to each laboratory for testing. The test results from the two laboratories 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 for that material must be adjusted in consideration of the known bias.  
5.2 Air permeability is an important factor in the performance of such textile materials as gas filters, fabrics for air bags, clothing, mosquito netting, parachutes, sails, tentage, and vacuum cleaners. In filtration, for example, efficiency is directly related to air permeability. Air permeability also can be used to provide an indication of the breathability of weather-resistant and rainproof fabrics, or of coated fabrics in general, and to detect changes during the manufacturing process.  
5.3 Performance specifications, both industrial and military, have been prepared on the basis of air permeability and are used in the purchase of fabrics where permeability is of interest.  
5.4 Construction factors and finishing techniques can have an appreciable effect upon air permeability by causing a change in the length of airflow paths through a fabric. Hot calendaring can be used to flatten fabric components, thus reducing...
SCOPE
1.1 This test method covers the measurement of the air permeability of textile fabrics.  
1.2 This test method applies to most fabrics including woven fabrics, nonwoven fabrics, air bag fabrics, blankets, napped fabrics, knitted fabrics, layered fabrics, and pile fabrics. The fabrics may be untreated, heavily sized, coated, resin-treated, or otherwise treated.  
1.3 The values stated in SI units are to be regarded as the standard. The values stated in inch-pound units may be approximate.  
1.4 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.  
1.5 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.

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ASTM
ASTM D4850-23(Terminology)
Standard Terminology Relating to Fabrics and Fabric Test Methods

SCOPE
1.1 This terminology covers definitions of technical terms used in the industry related to textile fabrics. Terms that are generally understood or adequately defined in other readily available sources are not included. Other terminology standards that have terms related to textile fabrics are shown in 2.1  
1.2 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.

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  • Standard
    11 pages
    English language
    sale 15% off