ASTM D3787-89
(Test Method)Test Method for Bursting Strength of Textiles-Constant-Rate-of-Traverse (CRT) Ball Burst Test (Withdrawn 1998)
Test Method for Bursting Strength of Textiles-Constant-Rate-of-Traverse (CRT) Ball Burst Test (Withdrawn 1998)
SCOPE
1.1 This test method describes the measurement for bursting strength with a ball burst strength tester of textiles or garments that exhibit a high degree of ultimate elongation.
1.2 The values stated in SI units are to be regarded as the standard.
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as the standard. Within the test, the inch-pound units are shown in parenthesis. The values stated in each system are not exact equivalents; therefore, each system may be used independently of the other. Combining values from the two systems may result in nonconformance within the specification.
Note 1—For the measurement of bursting strength with a hydraulic testing machine, refer to Test Method D 3786.
1.4 This standard may involve hazardous materials, operations and equipment. 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 us.
General Information
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Standards Content (Sample)
ASTM D3787 87 0757510 005783Li 4
This standard is issued under the fixed designation D 3787; 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 3.1.4.1 Discussion-The angle of application of force, sud
the area of the fabric upon which the force is applied vades
1.1 This test method covers the determination of the
continuously as the fabric stretches when it is tested as
bursting strength of knit fabrics or garments that exhibit a
directed in this method.
high degree of ultimate elongation. It is not recommended
3.5 For definitions of other textile terns used in this
or garments made from woven fabrics.
for woven fabrics
method refer to Terminology D 123.
NOTE 1-For the measurement of bursting strength with a hydraulic
testing machine, refer to Test Method D 3786.
4. Summary OP Test Method
1.2 This standard may involve hazardous materials, oper-
4.1 A specimen of the fabric or garment is securely
ations, and equipment. This standard does not purport to
clamped without tension between grooved, circular plates of
address all of the safety problems associated with its use. It is
the bd burst attachment secured to the pulling (movable)
the responsibility of the user of this standard to establish
jaw for the 6onstant-rate-of-trave~e (CRT) testing machine.
appropriate sqfety and health practices and determine the
A force is exerted against the specimen by a polished,
applicability ofregulatory limitations prior ío use.
hardened steel ball that is attached to the pendulum-
2. Referenced Documents
actuating (fixed) clamp of the machine, until rupture occurs.
2.1 ASTM Standards:
D96 Specification for Tensile Testing Machines for 5, Bignifisance and Use
~extiies~i~
5.1 This test method for the determination of ball
D 123 Terminology Relating to Textilesai3
bursting strength of knitted goads is being used by the textlie
D 1776 Practice for Conditioning Textiles for
industry for the evduation of a wide variety of fabrics,
D 3786 Test Method for Hydraulic Bursting Strength of
5.2 Although test results obtained using the produres in
Knitted Goods and Nonwoven Fabrics-Diaphragm
Test Method D 3787 have not been correlated with actual
Bursting Strength Tester Method'
pepfomance, Test Method D 3787 is considered satisfactory
for acceptance testing of commercial shipments of knitted
3. Terminology
fabrics for bursting strength since the method has been used
3.1 Definitions
extensively in the trade for acceptance testing. In wes of
3.1.1 constant-rate-of-traverse tensile testing machine
disagreement arising from differences in values reported by
(CRr), n-a testing machine in which the pulling clamp
the purchaser and the selíer when using Test Method D 3989
moves at a uniform rate and the load is applied through the
for amptarice testing, the statistid bias, if any, between the
other clamp which moves appreciably to actuate a weighing
laboratory of the purchaser and the laboratory of the seller
mechanism, so that the rate of increase of load or elongation
be determined with comparison based on testing
should
is dependent upon the extension characteristics of the
specimens randomly drawn from one sample of material of
specimen.
the type being evduated.
3.1.2 fabric, knitted, n-a structure produced by inter-
NOTE %-The kind of load transfer and stretch that occur when
looping one or more ends of yarn or comparable material.
knitted pods are worn is prevented by clamping them as directed in this
3.1.3 fabric, nonwoven, n-a textile structure produced by
test method.
or interlocking of fibers, or both, accomplished by
bonding
mechanical, chemical, or solvent means and combinations
6, Apparatus
thereof.
6.1 COnStQnt-~Qte-Of-TrQVerSe Tensile Testing Machine
3.1.4 strength, bursting, n-the force or pressure required
(CRT), as specified in Specification D 76, with a bd-burst
to rupture a textile by distending it with a force, applied at
attachment replacing the clamp assembly.
right angles to the plane of the fabric, under specified
6.2 Ball-Burst Attachment,' consisting of an attachment
conditions.
kaving a p~li~hd steel ball that replaw the fixed damp of
the tensile tester and of a fing-clamp mechanism that
I This test method is under the jurisdiction of ASTM Committee D-13 on
replaw the pulling (moving) clamp of the tensile tester (see
Textiles and is the direct responsibility of Subcommittee DI359 on Fabric Test
Methods, General.
_-
Current edition approved Sept. 29, 1989. Published April 1990. Originally
published as D 3787 - 79. Last previous edition D 3787 - 80a. The Ball Bursting Attachment, manufacfured by the &Ott Tester Co., Inc., a
Antiiial Book of ASTM Standards, Vol 07.01.
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