ASTM D6775-13(2017)
(Test Method)Standard Test Method for Breaking Strength and Elongation of Textile Webbing, Tape and Braided Material
Standard Test Method for Breaking Strength and Elongation of Textile Webbing, Tape and Braided Material
SIGNIFICANCE AND USE
5.1 This test method can be used for acceptance testing of commercial shipments but comparisons should be made with caution because estimates of between-laboratory precision are incomplete.
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, use samples for such comparative tests that are 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. 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 for that material must be adjusted in consideration of the known bias.
5.2 Elongation is an indication of the ability of a fiber to absorb energy. The elongation of textile materials must be great enough to withstand strains experienced in processing and end use, and to absorb the energies of applied forces repeatedly.
SCOPE
1.1 This test method covers the determination of the breaking strength and elongation of textile webbing, tape and braided materials using a split-drum type specimen clamp.
1.2 This test method is limited to materials with a maximum width of 90 mm (3.5 in.) and a maximum breaking strength of no more than 89000 N (20000 lb).
1.3 The values stated in either SI units or U.S. Customary units are to be regarded separately as standard. Within the text, the U.S. Customary units are given in parentheses. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of the other.
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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Standards Content (Sample)
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.
Designation: D6775 − 13 (Reapproved 2017)
Standard Test Method for
Breaking Strength and Elongation of Textile Webbing, Tape
and Braided Material
This standard is issued under the fixed designation D6775; 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 D4850 Terminology Relating to Fabrics and Fabric Test
Methods
1.1 This test method covers the determination of the break-
ing strength and elongation of textile webbing, tape and
3. Terminology
braided materials using a split-drum type specimen clamp.
3.1 For definitions of terms related to force and deformation
1.2 Thistestmethodislimitedtomaterialswithamaximum
width of 90 mm (3.5 in.) and a maximum breaking strength of used in this test method, refer to Terminology D4848. For
definitions of other terms related to textiles used in this
no more than 89000 N (20000 lb).
standard, refer to Terminology D123, and D4850.
1.3 The values stated in either SI units or U.S. Customary
units are to be regarded separately as standard. Within the text,
4. Summary of Test Method
the U.S. Customary units are given in parentheses. The values
stated in each system are not exact equivalents; therefore, each
4.1 A specimen is clamped in a tensile testing machine and
system shall be used independently of the other.
extended to rupture. The breaking force is determined from a
1.4 This standard does not purport to address all of the force-elongation curve or with an interfaced computer. Elon-
safety concerns, if any, associated with its use. It is the gation is determined by calculating the difference between
responsibility of the user of this standard to establish appro- bench marks before the application of a force and at a specified
priate safety, health and environmental practices and deter-
force.
mine the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accor-
5. Significance and Use
dance with internationally recognized principles on standard-
5.1 This test method can be used for acceptance testing of
ization established in the Decision on Principles for the
commercial shipments but comparisons should be made with
Development of International Standards, Guides and Recom-
caution because estimates of between-laboratory precision are
mendations issued by the World Trade Organization Technical
incomplete.
Barriers to Trade (TBT) Committee.
5.1.1 If there are differences of practical significance be-
tween reported test results for two laboratories (or more),
2. Referenced Documents
2 comparative tests should be performed to determine if there is
2.1 ASTM Standards:
a statistical bias between them, using competent statistical
D76 Specification for Tensile Testing Machines for Textiles
assistance. As a minimum, use samples for such comparative
D123 Terminology Relating to Textiles
teststhatareashomogeneousaspossible,drawnfromthesame
D1776 Practice for Conditioning and Testing Textiles
lot of material as the samples that resulted in disparate results
D4848 Terminology Related to Force, Deformation and
during initial testing, and randomly assigned in equal numbers
Related Properties of Textiles
to each laboratory. 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
This test method is under the jurisdiction ofASTM Committee D13 on Textiles
series. If bias is found, either its cause must be found and
and is the direct responsibility of Subcommittee D13.60 on Fabric Test Methods,
corrected, or future test results for that material must be
Specific.
Current edition approved July 15, 2017. Published August 2017. Originally
adjusted in consideration of the known bias.
approved in 2002. Last previous edition approved in 2013 as D6775 – 13. DOI:
10.1520/D6775-13R17.
5.2 Elongation is an indication of the ability of a fiber to
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
absorbenergy.Theelongationoftextilematerialsmustbegreat
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
enough to withstand strains experienced in processing and end
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. use, and to absorb the energies of applied forces repeatedly.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D6775 − 13 (2017)
FIG. 1 Side View of Clamping Assembly
FIG. 2 Example of Clamping Assembly
D6775 − 13 (2017)
6. Apparatus 8.2.1 Ensure that the clamps are positioned such that they
are facing opposite of each other with the upper clamp facing
6.1 Tensile Testing Machine, CRE-type, conforming to
front and the lower clamp facing back. Set the distance
Specification D76 with respect to force indication, working
between clamps, (gage length) to 250 6 10 mm (10 6 0.5 in.),
range, capacity and verification of recorded elongation, and
center to center of the drums at the split.
designed for operation at a pulling speed of 75 6 25 mm/min
8.2.2 Use a force measuring system such that the breaking
(3 6 1 in./min).
force will fall between 15 and 85 percent of its full-scale
6.2 Clamping Assembly, consisting of an upper and lower
capacity.
clamp, each a split-drum type, as shown in Fig. 1 and Fig. 2.
8.2.3 Set the crosshead speed to 75 6 25 mm/min (3 6 1
6.3 ComputerorMicroprocessor, interfaced, with automatic in./min).
8.2.4 When using an interfaced computer or
data gathering system, including photo or electronic instru-
ments to measure elongation. (Optional.) microprocessor, set parameters to obtain selected properties
using supplier’s directions and Specification D76.
7. Sampling, Test Specimens, and Test Units
9. Conditioning
7.1 Lot Sample—Take a lot sample as directed in the
9.1 Conditionthetestspecimenstomoistureequilibriumfor
applicable material specification. In absence of such a specifi-
cation randomly select five rolls or pieces to constitute the lot testing in the standard atmosphere for testing textiles in
accordance with Practice D1776 or, if applicable, in the
sample.
specified atmosphere in which the testing is to be performed.
7.2 Laboratory Sampling Unit, as produced material—As a
9.2 In the event of dispute concerning the results of tests
laboratory sampling unit take one piece of full-width webbing,
that may be affected by the moisture content, test specimen(s)
tape or braid that is at least 1.4 m (1.5 yd) in length from each
shall be preconditioned by bringing them to approximate
roll or piece in the lot sample.
moisture equilibrium in the standard atmosphere for precondi-
7.2.1 For thick specimens, longer specimens may be re-
tioning textiles in accordance with Practice D1776.
quired to maintain the specified gage length and to ensure the
specimen is completely in the clamps.
10. Procedure
7.2.2 Whentestingafterabrasionisrequired,asalaboratory
sampling unit, take one piece of full-width webbing, tape or
10.1 Test the relaxed specimens in the standard atmosphere
braid that is at least 2.8 m (3.0 yd) in length from each roll or for testing textiles.
piece in the lot sample (see 7.2.1). NOTE2—Theforcemeasuringsystemshouldbezeroedpriortorunning
any specimens and periodically during the course of the test, particularly
7.3 TestSpecimens,asproducedmaterial—From each labo-
if drift is observed in the zero value of the force measuring system.
ratory sampling unit, cut 1 test specimen full-width and at least
10.2 Insert one end of the specimen centrally and com-
1.4 m (1.5 yd) in length (see 7.2.1).
pletely between the two halves of the split drum in the upper
7.3.1 When testing after abrasion is required, from each
clamp. From the front of the drum, wrap the specimen down
laboratory sampling unit, cut 2 test specimens full width and at
and around the back of the lower half of the drum and up
least 1.4 m (1.5 yd) in length (see 7.2.1). Mark one specimen
around the upper half, such that the specimen comes over the
“A” for abraded and the other “U” for unabraded.
upper clamp front.
7.4 When the lot or shipment consist of less than 5 rolls or
10.3 Take the opposite end of the specimen and starting at
pieces, randomly select 5 test specimens for each condition of
the back, loosely wrap around both halves of the lower clamp.
test, that represent all rolls or pieces in the lot or shipment.
Fromthebackofthelowerclamp,lifttheupperhalfofthesplit
7.5 Ensure specimens are free of folds, creases, or wrinkles.
drum and insert the specimen end centrally and completely
Avoid getting oil, water, grease, etc. on th
...
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: D6775 − 13 (Reapproved 2017)
Standard Test Method for
Breaking Strength and Elongation of Textile Webbing, Tape
and Braided Material
This standard is issued under the fixed designation D6775; 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 D4850 Terminology Relating to Fabrics and Fabric Test
Methods
1.1 This test method covers the determination of the break-
ing strength and elongation of textile webbing, tape and
3. Terminology
braided materials using a split-drum type specimen clamp.
3.1 For definitions of terms related to force and deformation
1.2 This test method is limited to materials with a maximum
used in this test method, refer to Terminology D4848. For
width of 90 mm (3.5 in.) and a maximum breaking strength of
no more than 89000 N (20000 lb). definitions of other terms related to textiles used in this
standard, refer to Terminology D123, and D4850.
1.3 The values stated in either SI units or U.S. Customary
units are to be regarded separately as standard. Within the text,
4. Summary of Test Method
the U.S. Customary units are given in parentheses. The values
stated in each system are not exact equivalents; therefore, each
4.1 A specimen is clamped in a tensile testing machine and
system shall be used independently of the other.
extended to rupture. The breaking force is determined from a
1.4 This standard does not purport to address all of the force-elongation curve or with an interfaced computer. Elon-
safety concerns, if any, associated with its use. It is the gation is determined by calculating the difference between
responsibility of the user of this standard to establish appro- bench marks before the application of a force and at a specified
priate safety, health and environmental practices and deter- force.
mine the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accor-
5. Significance and Use
dance with internationally recognized principles on standard-
5.1 This test method can be used for acceptance testing of
ization established in the Decision on Principles for the
commercial shipments but comparisons should be made with
Development of International Standards, Guides and Recom-
caution because estimates of between-laboratory precision are
mendations issued by the World Trade Organization Technical
incomplete.
Barriers to Trade (TBT) Committee.
5.1.1 If there are differences of practical significance be-
tween reported test results for two laboratories (or more),
2. Referenced Documents
comparative tests should be performed to determine if there is
2.1 ASTM Standards:
a statistical bias between them, using competent statistical
D76 Specification for Tensile Testing Machines for Textiles
assistance. As a minimum, use samples for such comparative
D123 Terminology Relating to Textiles
tests that are as homogeneous as possible, drawn from the same
D1776 Practice for Conditioning and Testing Textiles
lot of material as the samples that resulted in disparate results
D4848 Terminology Related to Force, Deformation and
during initial testing, and randomly assigned in equal numbers
Related Properties of Textiles
to each laboratory. 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
This test method is under the jurisdiction of ASTM Committee D13 on Textiles
series. If bias is found, either its cause must be found and
and is the direct responsibility of Subcommittee D13.60 on Fabric Test Methods,
corrected, or future test results for that material must be
Specific.
Current edition approved July 15, 2017. Published August 2017. Originally
adjusted in consideration of the known bias.
approved in 2002. Last previous edition approved in 2013 as D6775 – 13. DOI:
10.1520/D6775-13R17.
5.2 Elongation is an indication of the ability of a fiber to
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
absorb energy. The elongation of textile materials must be great
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
enough to withstand strains experienced in processing and end
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. use, and to absorb the energies of applied forces repeatedly.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D6775 − 13 (2017)
FIG. 1 Side View of Clamping Assembly
FIG. 2 Example of Clamping Assembly
D6775 − 13 (2017)
6. Apparatus 8.2.1 Ensure that the clamps are positioned such that they
are facing opposite of each other with the upper clamp facing
6.1 Tensile Testing Machine, CRE-type, conforming to
front and the lower clamp facing back. Set the distance
Specification D76 with respect to force indication, working
between clamps, (gage length) to 250 6 10 mm (10 6 0.5 in.),
range, capacity and verification of recorded elongation, and
center to center of the drums at the split.
designed for operation at a pulling speed of 75 6 25 mm/min
8.2.2 Use a force measuring system such that the breaking
(3 6 1 in./min).
force will fall between 15 and 85 percent of its full-scale
6.2 Clamping Assembly, consisting of an upper and lower
capacity.
clamp, each a split-drum type, as shown in Fig. 1 and Fig. 2.
8.2.3 Set the crosshead speed to 75 6 25 mm/min (3 6 1
in./min).
6.3 Computer or Microprocessor, interfaced, with automatic
data gathering system, including photo or electronic instru- 8.2.4 When using an interfaced computer or
microprocessor, set parameters to obtain selected properties
ments to measure elongation. (Optional.)
using supplier’s directions and Specification D76.
7. Sampling, Test Specimens, and Test Units
9. Conditioning
7.1 Lot Sample—Take a lot sample as directed in the
applicable material specification. In absence of such a specifi- 9.1 Condition the test specimens to moisture equilibrium for
testing in the standard atmosphere for testing textiles in
cation randomly select five rolls or pieces to constitute the lot
accordance with Practice D1776 or, if applicable, in the
sample.
specified atmosphere in which the testing is to be performed.
7.2 Laboratory Sampling Unit, as produced material—As a
9.2 In the event of dispute concerning the results of tests
laboratory sampling unit take one piece of full-width webbing,
that may be affected by the moisture content, test specimen(s)
tape or braid that is at least 1.4 m (1.5 yd) in length from each
shall be preconditioned by bringing them to approximate
roll or piece in the lot sample.
moisture equilibrium in the standard atmosphere for precondi-
7.2.1 For thick specimens, longer specimens may be re-
tioning textiles in accordance with Practice D1776.
quired to maintain the specified gage length and to ensure the
specimen is completely in the clamps.
10. Procedure
7.2.2 When testing after abrasion is required, as a laboratory
sampling unit, take one piece of full-width webbing, tape or 10.1 Test the relaxed specimens in the standard atmosphere
braid that is at least 2.8 m (3.0 yd) in length from each roll or
for testing textiles.
NOTE 2—The force measuring system should be zeroed prior to running
piece in the lot sample (see 7.2.1).
any specimens and periodically during the course of the test, particularly
7.3 Test Specimens, as produced material—From each labo-
if drift is observed in the zero value of the force measuring system.
ratory sampling unit, cut 1 test specimen full-width and at least
10.2 Insert one end of the specimen centrally and com-
1.4 m (1.5 yd) in length (see 7.2.1).
pletely between the two halves of the split drum in the upper
7.3.1 When testing after abrasion is required, from each
clamp. From the front of the drum, wrap the specimen down
laboratory sampling unit, cut 2 test specimens full width and at
and around the back of the lower half of the drum and up
least 1.4 m (1.5 yd) in length (see 7.2.1). Mark one specimen
around the upper half, such that the specimen comes over the
“A” for abraded and the other “U” for unabraded.
upper clamp front.
7.4 When the lot or shipment consist of less than 5 rolls or
10.3 Take the opposite end of the specimen and starting at
pieces, randomly select 5 test specimens for each condition of
the back, loosely wrap around both halves of the lower clamp.
test, that represent all rolls or pieces in the lot or shipment.
From the back of the lower clamp, lift the upper half of the split
7.5 Ensure specimens are free of folds, creases, or wrinkles.
drum and insert the specimen end centrally and completely
Avoid getting oil, water, grease, etc. on the specimens when
between the two halves of the split drum. Remove as much
handling.
slac
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D6775 − 13 D6775 − 13 (Reapproved 2017)
Standard Test Method for
Breaking Strength and Elongation of Textile Webbing, Tape
and Braided Material
This standard is issued under the fixed designation D6775; 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
1.1 This test method covers the determination of the breaking strength and elongation of textile webbing, tape and braided
materials using a split-drum type specimen clamp.
1.2 This test method is limited to materials with a maximum width of 90 mm (3.5 in.) and a maximum breaking strength of no
more than 89000 N (20000 lb).
1.3 The values stated in either SI units or U.S. Customary units are to be regarded separately as standard. Within the text, the
U.S. Customary units are given in parentheses. The values stated in each system are not exact equivalents; therefore, each system
shall be used independently of the other.
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 safety, health and healthenvironmental 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.
2. Referenced Documents
2.1 ASTM Standards:
D76 Specification for Tensile Testing Machines for Textiles
D123 Terminology Relating to Textiles
D1776 Practice for Conditioning and Testing Textiles
D4848 Terminology Related to Force, Deformation and Related Properties of Textiles
D4850 Terminology Relating to Fabrics and Fabric Test Methods
3. Terminology
3.1 For definitions of terms related to force and deformation used in this test method, refer to Terminology D4848. For
definitions of other terms related to textiles used in this standard, refer to Terminology D123, and D4850.
4. Summary of Test Method
4.1 A specimen is clamped in a tensile testing machine and extended to rupture. The breaking force is determined from a
force-elongation curve or with an interfaced computer. Elongation is determined by calculating the difference between bench marks
before the application of a force and at a specified force.
5. Significance and Use
5.1 This test method can be used for acceptance testing of commercial shipments but comparisons should be made with caution
because estimates of between-laboratory precision are incomplete.
This test method is under the jurisdiction of ASTM Committee D13 on Textiles and is the direct responsibility of Subcommittee D13.60 on Fabric Test Methods, Specific.
Current edition approved July 1, 2013July 15, 2017. Published August 2013August 2017. Originally approved in 2002. Last previous edition approved in 20112013 as
D6775 – 02D6775 – 13.(2011). DOI: 10.1520/D6775-13.10.1520/D6775-13R17.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D6775 − 13 (2017)
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, use samples for such comparative tests that are 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. 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 for that material must
be adjusted in consideration of the known bias.
5.2 Elongation is an indication of the ability of a fiber to absorb energy. The elongation of textile materials must be great enough
to withstand strains experienced in processing and end use, and to absorb the energies of applied forces repeatedly.
6. Apparatus
6.1 Tensile Testing Machine, CRE-type, conforming to Specification D76 with respect to force indication, working range,
capacity and verification of recorded elongation, and designed for operation at a pulling speed of 75 6 25 mm/min (3 6 1 in./min).
6.2 Clamping Assembly, consisting of an upper and lower clamp, each a split-drum type, as shown in Fig. 1 and Fig. 2.
6.3 Computer or Microprocessor, interfaced, with automatic data gathering system, including photo or electronic instruments
to measure elongation. (Optional.)
7. Sampling, Test Specimens, and Test Units
7.1 Lot Sample—Take a lot sample as directed in the applicable material specification. In absence of such a specification
randomly select five rolls or pieces to constitute the lot sample.
7.2 Laboratory Sampling Unit, as produced material—As a laboratory sampling unit take one piece of full-width webbing, tape
or braid that is at least 1.4 m (1.5 yd) in length from each roll or piece in the lot sample.
7.2.1 For thick specimens, longer specimens may be required to maintain the specified gage length and to ensure the specimen
is completely in the clamps.
7.2.2 When testing after abrasion is required, as a laboratory sampling unit, take one piece of full-width webbing, tape or braid
that is at least 2.8 m (3.0 yd) in length from each roll or piece in the lot sample (see 7.2.1).
Apparatus and clamps are commercially available.
FIG. 1 Side View of Clamping Assembly
D6775 − 13 (2017)
FIG. 2 Example of Clamping Assembly
7.3 Test Specimens, as produced material—From each laboratory sampling unit, cut 1 test specimen full-width and at least 1.4
m (1.5 yd) in length (see 7.2.1).
7.3.1 When testing after abrasion is required, from each laboratory sampling unit, cut 2 test specimens full width and at least
1.4 m (1.5 yd) in length (see 7.2.1). Mark one specimen “A” for abraded and the other “U” for unabraded.
7.4 When the lot or shipment consist of less than 5 rolls or pieces, randomly select 5 test specimens for each condition of test,
that represent all rolls or pieces in the lot or shipment.
7.5 Ensure specimens are free of folds, creases, or wrinkles. Avoid getting oil, water, grease, etc. on the specimens when
handling.
NOTE 1—An adequate specification or other agreement between the purchaser and the supplier requires taking into account the variability between
shipping units, between packages or ends within a shipping unit, and between specimens from a single package to provide a sampling with a meaningful
producer’s risk, consumer’s risk, acceptable quality level and limiting quality level.
8. Preparation of Apparatus
8.1 Prepare and verify the calibration of the tensile testing machine as directed in the manufacturer’s instructions and
Specification D76.
8.2 Set up and adjust the CRE-type tensile testing machine as follows:
8.2.1 Ensure that the clamps are positioned such that they are facing opposite of each other with the upper clamp facing front
and the lower clamp facing back. Set the distance between clamps, (gage length) to 250 6 10 mm (10 6 0.5 in.), center to center
of the drums at the split.
8.2.2 Use a force measuring system such that the breaking force will fall between 15 and 85 percent of its full-scale capacity.
8.2.3 Set the crosshead speed to 75 6 25 mm/min (3 6 1 in./min).
8.2.4 When using an interfaced computer or microprocessor, set parameters to obtain selected properties using supplier’s
directions and Specification D76.
9. Conditioning
9.1 Condition the test specimens to moisture equilibrium for testing in the standard atmosphere for testing textiles in accordance
with Practice D1776 or, if applicable, in the specified atmosphere in which the testing is to be performed.
9.2 In the event of dispute concerning the results of tests that may be affected by the moisture content, test specimen(s) shall
be preconditioned by bringing them to approximate moisture equilibrium in the standard atmosphere for preconditioning textiles
in accordance with Practice D1776.
D6775 − 13 (2017)
10. Procedure
10.1 Test the relaxed sp
...
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