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ASTM F1971-05

(Test Method)

Standard Test Method for Electrical Resistance of Tires Under Load On the Test Bench

Standard Test Method for Electrical Resistance of Tires Under Load On the Test Bench

SIGNIFICANCE AND USE
Occasions exist where static charges on the vehicle must be dissipated by way of the tires. Electrical resistance inversely measures the tire’ability to dissipate static charge from the vehicle.
SCOPE
1.1 This test method describes the measurement of the electrical resistance between the wheel of a mounted and inflated tire-wheel assembly and a flat conducting surface in loaded contact with the tire.
1.2 The method specifies procedures and equipment such that electrical resistance can be accurately determined for tires with values up to 1012 Ω (ohms).
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are 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.

General Information

Status
Historical
Publication Date
14-Aug-2005
ICS
83.160.01 - Tyres in general
Technical Committee
F09 - Tires
Drafting Committee
F09.30 - Laboratory (Non-Vehicular) Testing
Current Stage
Ref Project

Relations

Replaces
ASTM F1971-99 - Standard Test Method for Electrical Resistance of Tires Under Load On the Test Bench
Effective Date
15-Aug-2005
Replaced By
ASTM F1971-12 - Standard Test Method for Electrical Resistance of Tires Under Load On the Test Bench
Effective Date
01-May-2012

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ASTM F1971-05 - Standard Test Method for Electrical Resistance of Tires Under Load On the Test Bench
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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:F1971–05
Standard Test Method for
Electrical Resistance of Tires Under Load On the Test
1
Bench
This standard is issued under the fixed designation F1971; 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 International Standard ISO 16392 Electrical Resistance—
Test Methods to Measure the Electrical Resistance of
1.1 This test method covers the measurement of the electri-
6
Tyres on a Test Rig
cal resistance between the wheel of a mounted and inflated
Wirtschaftsverband der deutschen Kautschukindustrie e.V.
tire-wheel assembly and a flat conducting surface in loaded
(W.d.K) 110 Measurement of the Electrical Resistance of
contact with the tire.
Tyres
1.2 This test method specifies procedures and equipment
such that electrical resistance can be accurately determined for
3. Terminology
12
tires with values up to 10 V (ohms).
3.1 Definitions:
1.3 The values stated in SI units are to be regarded as the
3.1.1 connection point, n—any point on the wheel or metal
standard. The values given in parentheses are for information
loading plate where the resistance measuring instrument’s
only.
leads are connected. F538
1.4 This standard does not purport to address all of the
3.1.2 rim, n—the specially shaped circular periphery to
safety concerns, if any, associated with its use. It is the
which a tire may be mounted with appropriate bead fitment.
responsibility of the user of this standard to establish appro-
F538
priate safety and health practices and determine the applica-
3.1.3 test load, n—the force applied to a tire through the
bility of regulatory limitations prior to use.
rim; it is normal to the metal loading plate onto which the tire
2. Referenced Documents is loaded. F538
2
3.1.4 tire electrical resistance, n—the electrical resistance
2.1 ASTM Standards:
in ohms (V) measured between the wheel of a mounted and
F538 Terminology Relating to the Characteristics and Per-
inflated tire-wheel assembly and a metallic plate onto which
formance of Tires
the tire is loaded at a specified load. F538
2.2 Other Standards:
3.1.5 wheel, n—a rigid structure consisting of a rim con-
The Tire and RimAssociation Inc.Yearbook (TRA), current
3 nected to a central disk that permits rotationally centered
issue
attachment to an axle. F538
The European Tyre and Rim Technical Organization
4 3.1.6 For additional definitions of terms used in this test
(ETRTO), current issue
method, refer to Terminology F538.
The Japan Automobile Tire Manufacturers Association, Inc.
5
Yearbook (JATMA), current issue
4. Summary of Test Method
4.1 The electrical resistance of an inflated tire-wheel assem-
1
This test method is under the jurisdiction of ASTM Committee F09 on Tires
bly (see Note 1) is measured between the wheel and the
and is the direct responsibility of Subcommittee F09.30 on Laboratory (Non-
conducting surface against which the tire is loaded. This
Vehicular) Testing.
measurement involves the use of an appropriate resistance
Current edition approved Aug. 15, 2005. Published August 2005. Originally
approved in 1999. Last previous edition approved in 1999 as F1971–99. DOI:
meter and voltage application system, as well as a special test
10.1520/F1971-05.
fixture or measuring stand.
2
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
NOTE 1—A tire mounted on an approved wheel and inflated to a
Standards volume information, refer to the standard’s Document Summary page on
specified pressure.
the ASTM website.
3
Available from the Tire and Rim Association, Inc., 175 Montrose West Ave.,
Suite 150, Copley, OH 44321.
4
Available from the European Tyre and Rim Technical Organization, 32/2
avenue Brugmann, B-1060 Brussels, Belgium.
5 6
Available from the Japan Automobile Tire Manufacturers Association, No. 33 Available from International Organization for Standardization (ISO), 1 rue de
th
Mori Building, 8 Floor, 3-8-21 Toranomon, Minato-Ku, Tokyo, Japan 105-0001. Varembé, Case postale 56, CH-1211, Geneva 20, Switzerland.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
F1971–05
5. Significance and Use 8. Measurement Conditions
5.1 Occasionsexistwherestaticchargesonthevehiclemust 8.1 The test load applied during the measurement is 80 6
be dissipated by way of the tires. Electrical resistance inversely 5 % of the maximum load capacity of the tire as listed in the
measures the tire’s ability to dissipate static charge from
...

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