ASTM F1971-12
(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's ability to dissipate static charge from the vehicle.
SCOPE
1.1 This test method covers 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 This test 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.
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Designation: F1971 − 12
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.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
5
1. Scope Yearbook (JATMA), current issue
International Standard ISO 16392Electrical Resistance—
1.1 This test method covers the measurement of the electri-
Test Methods to Measure the Electrical Resistance of
cal resistance between the wheel of a mounted and inflated
6
Tyres on a Test Rig
tire-wheel assembly and a flat conducting surface in loaded
Wirtschaftsverband der deutschen Kautschukindustrie e.V.
contact with the tire.
(W.d.K) 110Measurement of the Electrical Resistance of
1.2 This test method specifies procedures and equipment
Tyres
such that electrical resistance can be accurately determined for
12
tires with values up to 10 Ω (ohms).
3. Terminology
1.3 The values stated in SI units are to be regarded as the 3.1 Definitions:
standard. The values given in parentheses are for information 3.1.1 connection point, n—any point on the wheel or metal
only. loading plate where the resistance measuring instrument’s
leads are connected. F538
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the 3.1.2 rim, n—the specially shaped circular periphery to
responsibility of the user of this standard to establish appro- which a tire may be mounted with appropriate bead fitment.
priate safety and health practices and determine the applica- F538
bility of regulatory limitations prior to use.
3.1.3 test load, n—the force applied to a tire through the
rim; it is normal to the metal loading plate onto which the tire
2. Referenced Documents
is loaded. F538
2.1 ASTM Standards:
3.1.4 tire electrical resistance, n—theelectricalresistancein
F538Terminology Relating to the Characteristics and Per-
ohms (Ω) measured between the wheel of a mounted and
2
formance of Tires
inflated tire-wheel assembly and a metallic plate onto which
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-
TheTire and RimAssociation Inc.Yearbook (TRA), current
3
issue nected to a central disk that permits rotationally centered
attachment to an axle. F538
The European Tyre and Rim Technical Organization
4
(ETRTO), current issue
3.1.6 For additional definitions of terms used in this test
The JapanAutomobile Tire ManufacturersAssociation, Inc.
method, refer to Terminology F538.
4. Summary of Test Method
1
This test method is under the jurisdiction of ASTM Committee F09 on Tires
4.1 Theelectricalresistanceofaninflatedtire-wheelassem-
and is the direct responsibility of Subcommittee F09.30 on Laboratory (Non-
bly (see Note 1) is measured between the wheel and the
Vehicular) Testing.
conducting surface against which the tire is loaded. This
CurrenteditionapprovedMay1,2012.PublishedJuly2012.Originallyapproved
measurement involves the use of an appropriate resistance
in 1999. Last previous edition approved in 2005 as F1971–05. DOI: 10.1520/
F1971-12.
meter and voltage application system, as well as a special test
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
fixture or measuring stand.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
3 5
Available from the Tire and Rim Association, Inc., 175 Montrose West Ave., Available from the Japan Automobile Tire Manufacturers Association, No. 33
th
Suite 150, Copley, OH 44321. Mori Building, 8 Floor, 3-8-21 Toranomon, Minato-Ku, Tokyo, Japan 105-0001.
4 6
Available from the European Tyre and Rim Technical Organization, 32/2 Available from International Organization for Standardization (ISO), 1 rue de
avenue Brugmann, B-1060 Brussels, Belgium. 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 − 12
NOTE 1—A tire mounted on an approved wheel and inflated to a
the tire to be tested shall be kept at an ambient temperature of
specified pressure.
23 6 5°C [73 6 9°F], and at a relative humidity less than
60%.
5. Significance and Use
5.1 Occasionsexistwherestaticchargesonthevehiclemust
8. Measurement Conditions
bedissipatedbywayofthetires.Electricalresistanceinversely
8.1 The test load applied during the measurement is 80 6
measures the tire’s ability to
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:F1971–05 Designation:F1971–12
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
1.1 This test method covers 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 This test method specifies procedures and equipment such that electrical resistance can be accurately determined for tires
12
with values up to 10 V (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.
2. Referenced Documents
2
2.1 ASTM Standards:
F538 Terminology Relating to the Characteristics and Performance of Tires
2.2 Other Standards:
3
The Tire and Rim Association Inc. Yearbook (TRA), current issue
4
The European Tyre and Rim Technical Organization (ETRTO), current issue
5
The Japan Automobile Tire Manufacturers Association, Inc. Yearbook (JATMA), current issue
International Standard ISO 16392 Electrical Resistance—Test Methods to Measure the Electrical Resistance of Tyres on a Test
6
Rig
Wirtschaftsverband der deutschen Kautschukindustrie e.V. (W.d.K) 110 Measurement of the Electrical Resistance of Tyres
3. Terminology
3.1 Definitions:
3.1.1 connection point, n—any point on the wheel or metal loading plate where the resistance measuring instrument’s leads are
connected. F538
3.1.2 rim, n—the specially shaped circular periphery to which a tire may be mounted with appropriate bead fitment. F538
3.1.3 test load, n—theforceappliedtoatirethroughtherim;itisnormaltothemetalloadingplateontowhichthetireisloaded.
F538
3.1.4 tire electrical resistance, n—the electrical resistance in ohms (V) measured between the wheel of a mounted and inflated
tire-wheel assembly and a metallic plate onto which the tire is loaded at a specified load. F538
3.1.5 wheel, n—a rigid structure consisting of a rim connected to a central disk that permits rotationally centered attachment
to an axle. F538
3.1.6 For additional definitions of terms used in this test method, refer to Terminology F538.
1
This test method is under the jurisdiction of ASTM Committee F09 on Tires and is the direct responsibility of Subcommittee F09.30 on Laboratory (Non-Vehicular)
Testing.
Current edition approved Aug. 15, 2005. Published August 2005. Originally approved in 1999. Last previous edition approved in 1999 as F1971–99. DOI:
10.1520/F1971-05.
Current edition approved May 1, 2012. Published July 2012. Originally approved in 1999. Last previous edition approved in 2005 as F1971 – 05. DOI: 10.1520/F1971-12.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on 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 th
Available from the Japan Automobile Tire Manufacturers Association, No. 33 Mori Building, 8 Floor, 3-8-21 Toranomon, Minato-Ku, Tokyo, Japan 105-0001.
6
Available from International Organization for Standardization (ISO), 1 rue de 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 ----------------------
F1971–12
4. Summary of Test Method
4.1 The electrical resistance of an inflated tire-wheel assembly (see Note 1) is measured between the wheel and the conducting
surface against which the tire is loaded. This measurement involves the use of an appropriate resistance meter and voltage
application system, as well as a special test fixture or measuring stand.
...
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