ASTM D4268-93

Standard Test Methods for Testing Fiber Ropes (Withdrawn 2002)

SCOPE
1.1 These test methods specify procedures to determine diameter and circumference (Section 8), linear density (Section 14), breaking force (Section 21), and elongation (Sections 28 and 36)) of fiber ropes except those ropes incorporating steel wire. (See MIL-STD-191)
1.2 The values stated in SI units are to be regarded as standard. The values provided in parentheses are provided for information purposes only.
1.3 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. Additional precautions for these test methods are given in Section 5.

General Information

• Status: Withdrawn
• Publication Date: 31-Dec-1992
• Withdrawal Date: 09-Jun-2002
• ICS: 59.080.50 - Ropes
• Technical Committee: D13 - Textiles

Standards Content (Sample)

Designation: D 4268 – 93
Standard Test Methods for
1
Testing Fiber Ropes
This standard is issued under the fixed designation D 4268; 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 3.1.2.1 Discussion—pick count is reported in picks per
metre, picks per foot, picks per inch, etc.
1.1 These test methods specify procedures to determine
3.1.3 pick count, n—in braided rope, the number of strands
diameter and circumference (Section 8), linear density (Section
rotating in one direction in one cycle length.
14), breaking force (Section 21), and elongation (Sections 28
3.1.4 elongation, n—the ratio of the change in length of a
and 36)) of fiber ropes except those ropes incorporating steel
rope during application of tension to the original length of the
wire. (See .)
rope when new.
1.2 The values stated in SI units are to be regarded as
3.1.4.1 non-elastic elongation (NE), n—of rope, elongation
standard. The values provided in parentheses are provided for
after cyclic tensioning the rope to a specified force for a
information purposes only.
specified number of cycles.
1.3 This standard does not purport to address all of the
3.1.4.2 recoverable elongation (CE), n—of rope, elongation
safety concerns, if any, associated with its use. It is the
which may be reclaimed following a period of rope relaxation
responsibility of the user of this standard to establish appro-
after the rope was cyclic tensioned.
priate safety and health practices and determine the applica-
3.1.4.3 residual elongation (RE), n—of rope, elongation
bility of regulatory limitations prior to use. Additional precau-
after cyclic tensioning the rope to a specified force for a
tions for these test methods are given in Section 5.
specified number of cycles and allowing the rope to relax for a
2. Referenced Documents specified period of time.
3.1.4.4 working elongation (WE), n—of rope, elongation
2.1 ASTM Standards:
which is immediately recoverable when tension is removed
D 76 Specification for Tensile Testing Machines for Tex-
2
from the rope.
tiles
2
3.1.4.5 total elongation (TE), n—of rope, the entire elonga-
D 123 Terminology Relating to Textiles
3
tion at any given applied force.
E 4 Practices for Force Verification of Test Machines
3.1.5 extension, n—the ratio of the change in length of a
E 74 Practice for Calibration of Force Measuring Instru-
rope during application of tension to the length of the rope
ments for Verifying the Load Indication of Testing Ma-
3
immediately before application of that load.
chines
4
3.1.6 fiber rope, n—a rope produced primarily from textile
2.2 Military Standard :
fibers.
MIL-STD-191
3.1.7 fid, n—a wooden or hard plastic tapered tool used as
3. Terminology
an aid in rope splicing.
3.1.8 hockle, n—in rope, a strand kink in a rope causing
3.1 Definitions:
yarn displacement in the strand resulting in rope deformation
3.1.1 braided rope, n—a cylindrically produced rope made
and damage.
by intertwining, maypole fashion, several to many strands
3.1.9 kink, n—in rope, an abrupt bend or loop in the rope
according to a definite pattern with adjacent strands normally
which is the result of an unbalanced twist relationship in the
containing yarns of the opposite twist.
rope structure.
3.1.2 cycle length, n—in braided rope, the distance, parallel
3.1.10 plaited rope, n—rope made from eight strands ar-
to the rope axis, of the strand to make one revolution around
ranged in four pairs in which one strand is placed adjacent to
the rope.
the second in each pair and in which each strand in each pair
has been twisted in one direction while each strand in each
1
These test methods are under the jurisdiction of ASTM Committee D-13 on
alternate pair has been twisted in the opposite direction and the
Textiles and are the direct responsibility of Subcommittee D13.16 on Ropes and
Cordage.
four pairs of strands are intertwined maypole fashion in a
Current edition approved July 15, 1993. Published September 1993. Originally
manner such that each pair of strands passes over and under
published as D 4268 – 83. Last previous edition D 4268 – 93.
2 adjacent pair of strands (syn. eight strand rope)
Annual Book of ASTM Standards, Vol 07.01.
3
3.1.11 tuck, n—in rope, a free strand of the rope placed
Annual Book of ASTM Standards, Vol 03.01.
4
Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700
between rope strands during rope splicing.
Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
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D 4268
3.1.12 reference tension, n—a low tensile force, generally machine operator must be either far enough away from the
about 1 % of the rope bre
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