ASTM F3015-13
(Test Method)Standard Test Method for Accelerated Laboratory Roadwheel Generation of Belt Separation in Radial Passenger Car and Light Truck Tires through Load Range E
Standard Test Method for Accelerated Laboratory Roadwheel Generation of Belt Separation in Radial Passenger Car and Light Truck Tires through Load Range E
SIGNIFICANCE AND USE
4.1 Belt edge separation is a tire condition that can be encountered in tire use, particularly in high tire temperature environments.
4.2 The goal of this standard is to define a scientifically valid protocol for the laboratory generation of belt edge separation in a tire that has previously completed accelerated laboratory aging as described in Practice F2838. This test method does not establish performance limits or tolerances for tire specifications.
4.3 However, as stated in the scope, some tires may not develop belt edge separations under the specified test conditions. They may develop other EOT conditions that are not due to belt edge separation. Also, some tires may not develop any EOT conditions during the course of the test prior to a DCT.
SCOPE
1.1 This standard describes a laboratory method to evaluate tires for their tendency to develop belt edge separation, via the use of a standard roadwheel (Practice F551/F551M). This evaluation is conducted on tires that have undergone accelerated laboratory aging as described in Practice F2838.
1.2 The End-of-Test (EOT) conditions that can be produced by this method include target (belt-edge separation), non-target (conditions other than belt-related separations that can be developed in passenger and light truck tires through on-road use), and non-representative (conditions that are typically developed only on laboratory roadwheels). There is also the possibility that no visible EOT conditions may be generated during the course of this test. In this instance the user may choose to select a designated completion time (DCT) as the EOT condition.
1.3 The values stated in SI units are to be regarded as the standard. The values given in the data log in Appendix X1 in parentheses are provided for information only.
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 and health practices and determine the applicability of regulatory limitations prior to use. For specific precautionary statements, see Section 6.
General Information
Standards Content (Sample)
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Designation: F3015 − 13
Standard Test Method for
Accelerated Laboratory Roadwheel Generation of Belt
Separation in Radial Passenger Car and Light Truck Tires
1
through Load Range E
This standard is issued under the fixed designation F3015; 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.
INTRODUCTION
The United States Congress passed the Transportation Recall Enhancement, Accountability and
Documentation (TREAD) Act in November 2000. Included in the Act were specific directions to the
National Highway Traffic Safety Administration (NHTSA) to upgrade tire safety standards.
As tire wear life has increased over the years, interest in the in-service aging of a tire’s internal
components has increased. To quote NHTSA, “. some members of Congress expressed the view that
thereisaneedforanagingtesttobeconductedonlightvehicletires.Theagencytentativelyconcludes
that we agree there is a need for an aging test in the proposed light vehicle tire standard because most
tire failures occur at mileages well beyond 2,720 kilometers (1,700 miles) to which tires are exposed
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in the current FMVSS No. 109 Endurance Test.” Until the publication of this standard, there was
neither an industry nor a government standard practice for the accelerated laboratory roadwheel
generation of belt separation in tires.
This standard represents the body of work whose goal was to develop a scientifically valid, short
duration aged tire test standard focused on the generation of belt edge separation. The scope of this
work is limited to radial passenger car and light truck tires through Load Range E. The standards
development task group conducted research in order to determine: (1) the appropriate accelerated
laboratory aging conditions which correlate material property changes at the belt edge of the tire as
produced in the laboratory with those observed in service (as described in Practice F2838), and (2) the
appropriate laboratory roadwheel durability test parameters which are capable of producing belt edge
separations while avoiding those conditions which are exclusively by-products of roadwheel testing
(as described in this standard).
1. Scope 1.2 The End-of-Test (EOT) conditions that can be produced
by this method include target (belt-edge separation), non-target
1.1 This standard describes a laboratory method to evaluate
(conditions other than belt-related separations that can be
tires for their tendency to develop belt edge separation, via the
developed in passenger and light truck tires through on-road
use of a standard roadwheel (Practice F551/F551M). This
use), and non-representative (conditions that are typically
evaluation is conducted on tires that have undergone acceler-
developed only on laboratory roadwheels). There is also the
ated laboratory aging as described in Practice F2838.
possibility that no visible EOT conditions may be generated
during the course of this test. In this instance the user may
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This test method is under the jurisdiction of ASTM Committee F09 on Tires
choose to select a designated completion time (DCT) as the
and is the direct responsibility of Subcommittee F09.30 on Laboratory (Non-
EOT condition.
Vehicular) Testing.
Current edition approved Nov. 15, 2013. Published January 2014. DOI: 10.1520/
1.3 The values stated in SI units are to be regarded as the
F3015-13.
2 standard. The values given in the data log in Appendix X1 in
Federal Register Vol. 67, No. 43, Tuesday, March 5, 2002, p. 10068, Paragraph
6, “Aging Effects.” parentheses are provided for information only.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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F3015 − 13
1.4 This standard does not purport to address all of the 3.1.6 breaker, n—in a tire, one or more plies under the tread
safety concerns, if any, associated with its use. It is the region of a tire that are additional to those which extend from
responsibility of the user of this standard to establish appro- bead to bead. F538
priate safety and health practices and determine the applica-
3.1.7 cold inflation pressure, n—thegaugepressureofatire,
bility of regulatory limitations prior to use. For specific
measured after equilibration at ambient temperature.
precautionary statements, see Section 6.
3.1.8 designated completion time (DCT), n—a time period
selected by the user of the test method as an alternative to the
2. Referenced Documents
development of a tire test condition which triggers the end of
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2.1 ASTM Standards:
the test.
F538 Terminology Relating
...
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