GB/T 13773.1-2008 PDF English (GB/T 13773-1992: Older version)
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Textiles -- Seam tensile properties of fabrics and made-up textile articles -- Part 1: Determination of maximum force to seam rupture using the strip method
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| GB/T 13773-1992 | English | 319 |
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Woven fabric and its products--Testing method for seam strength and seam efficiency
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GB/T 13773.1-2008: PDF in English (GBT 13773.1-2008) GB/T 13773.1-2008
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 59.080.30
W 04
GB/T 13773.1-2008 / ISO 13935-1.1999
Replacing GB/T 13773-1992
Textiles - Seam tensile properties of fabrics and
made-up textile articles - Part 1. Determination of
maximum force to seam rupture using the strip
method
(ISO 13935-1.1999, IDT)
ISSUED ON. JUNE 18, 2008
IMPLEMENTED ON. MARCH 01, 2009
Issued by.
General Administration of Quality Supervision, Inspection
and Quarantine of the People’s Republic of China;
Standardization Administration of the People’s Republic of
China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 6
4 Principle ... 6
5 Sampling ... 6
6 Apparatus ... 7
7 Atmosphere for conditioning and testing ... 8
8 Preparation of seams and of test specimens ... 8
9 Procedure ... 10
10 Calculation and expression of results ... 11
11 Test report ... 11
Foreword
GB/T 13773 Textiles - Seam tensile properties of fabrics and made-up textile articles is
divided into 2 parts.
— Part 1. Determination of maximum force to seam rupture using the strip method
— Part 2. Determination of maximum force to seam rupture using the grab method
This part is Part 1 of GB/T 13773.
This part uses translation method to equivalently adopt ISO 13935-1.1999 Textiles - Seam
tensile properties of fabrics and made-up textile articles - Part 1. Determination of
maximum force to seam rupture using the strip method.
Compared with ISO 13935-1.1999, this part makes the following editorial modifications.
— Normative referenced international standards are replaced by the equivalent
standards or Chinese standards that are corresponding to the international
standards;
— Foreword, introduction, informative annex A and bibliography of the international
standards have been deleted.
This part replaces GB/T 13773-1992 Method B. Compared with GB/T 13773-1992, the
main technical differences are as follows.
1. The above standards are characterized into that - one original independent standard
is adjusted into a series of standards, including two parts. The Part 1 is regarded as
the B method of the original standard and the Part 2 is regarded as the A method of
the original standard; the standard name is also amended correspondingly;
2. For the scope, woven fabrics and made-up articles are expanded; and inapplicable
products are added;
3. Relative standards of a stretching tester are added in the normative reference
document; and reference of partial standards is deleted;
4. CRE stretching tester, strip test and gauge length have been added in terms of
Chapter 3; and seaming stitch density, seam and seaming efficiency have been
deleted;
5. CRT strength tester has been deleted and concrete requirements have been
proposed for the CRE stretching tester;
6. Relative clauses of stitching parameters have been deleted and determined
according to an agreement;
Textiles - Seam tensile properties of fabrics and
made-up textile articles - Part 1. Determination of
maximum force to seam rupture using the strip
method
1 Scope
This part of GB/T 13773 specifies a procedure to determine the seam maximum force of
sewn seams when the force is applied perpendicularly to the seam, and specifies the
method known as the strip test.
This part is mainly applicable to woven textile fabrics. It can be applicable to fabrics
produced by other techniques. It is not normally applicable to woven elastic fabrics,
geotextiles, nonwovens, coated fabrics, textile-glass woven fabrics and fabrics made from
carbon fibres or polyolefin tape yarns.
The sewn fabrics may be obtained from previously sewn articles or may be prepared from
fabric samples, as agreed by the parties interested in the results.
This method is applicable to straight seams only and not to curved seams.
The method is restricted to the use of constant rate of extension (CRE) testing machines.
2 Normative references
The articles contained in the following documents have become this part of GB/T 13773
when they are quoted herein. For the dated documents so quoted, all the modifications
(excluding corrections) or revisions made thereafter shall not be applicable to this part.
For the undated documents so quoted, the latest editions shall be applicable to this part.
GB/T 6529 Textiles - Standard atmospheres for conditioning and testing (GB/T
6529-2008, ISO 139.2005, MOD)
GB/T 16825.1 Verification of static uniaxial testing machines - Part 1.
Tension/compression testing machines - Verification and calibration of the
force-measuring system (GB/T 16825.1-2008, ISO 7500-1.2004, IDT)
GB/T 19022 Measurement management systems - Requirements for measurement
processes and measuring equipment (GB/T 19022-2003, ISO 10012.2003, IDT)
3 Terms and definitions
For the purpose of this part of GB/T 13773, the following terms and definitions shall apply.
3.1
Constant-rate-of-extension (CRE) testing machine
Tensile-testing machine provided with one clamp which is stationary and another clamp
which moves with a constant speed throughout the test, the entire testing system being
virtually free from deflection.
3.2
Strip test
Tensile test in which the full width of the test specimen is gripped in the jaws of the testing
machine.
3.3
Maximum force to seam rupture
Maximum force recorded when a test specimen with a seam perpendicular to the direction
of extension is taken to seam rupture during a tensile test under the specified conditions.
3.4
Gauge length
Distance between the two effective clamping points of a testing device.
Note . The effective clamping points (or lines) of jaws can be checked by clamping a test specimen under
defined pretension with carbon copy paper to produce a gripping pattern on the test specimen and/or the
jaw faces.
4 Principle
A fabric test specimen of specified dimensions having a seam in the middle is extended
perpendicularly to the seam at a constant rate until the seam ruptures. The maximum
force to seam rupture is recorded.
5 Sampling
Select samples either in accordance with the procedure laid down in the material
specification for the fabric, or as agreed between the interested parties.
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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