ASTM G115-04
(Guide)Standard Guide for Measuring and Reporting Friction Coefficients
Standard Guide for Measuring and Reporting Friction Coefficients
SIGNIFICANCE AND USE
This guide points out factors that must be considered in conducting a valid test for determination of the coefficient of friction of a tribosystem, and it encourages the use of a standard reporting format for friction data.
5.1.1 The factors that are important for a valid test may not be obvious to non-tribologists, and the friction tests referenced will assist in selecting the apparatus and test technique that is most appropriate to simulate a tribosystem of interest.
The tribology literature is replete with friction data that cannot readily be used by others because specifics are not presented on the tribosystem that was used to develop the data. The overall goal of this guide is to provide a reporting format that will enable computer databases to be readily established. These databases can be searched for material couples and tribosystems of interest. Their use will significantly reduce the need for each laboratory to do its own testing. Sufficient information on test conditions will be available to determine applicability of the friction data to the engineer’specific needs.
SCOPE
1.1 This guide covers information to assist in the selection of a method for measuring the frictional properties of materials. Requirements for minimum data and a format for presenting these data are suggested. The use of the suggested reporting form will increase the long-term usefulness of the test results within a given laboratory and will facilitate the exchange of test results between laboratories. It is hoped that the use of a uniform reporting format will provide the basis for the preparation of handbooks and computerized databases.
1.2 This guide applies to most solid materials and to most friction measuring techniques and test equipment.
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.
General Information
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Standards Content (Sample)
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Designation: G115 – 04
Standard Guide for
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Measuring and Reporting Friction Coefficients
This standard is issued under the fixed designation G115; 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 D2394 Test Methods for Simulated Service Testing of
Wood and Wood-Base Finish Flooring
1.1 This guide covers information to assist in the selection
D2714 Test Method for Calibration and Operation of the
of a method for measuring the frictional properties of materi-
Falex Block-on-Ring Friction and Wear Testing Machine
als. Requirements for minimum data and a format for present-
D3028 Test Method for Kinetic Coefficient of Friction of
ingthesedataaresuggested.Theuseofthesuggestedreporting
3
Plastic Solids
form will increase the long-term usefulness of the test results
D3108 Test Method for Coefficient of Friction, Yarn to
within a given laboratory and will facilitate the exchange of
Solid Material
test results between laboratories. It is hoped that the use of a
D3247 Test Method for Coefficient of Static Friction of
uniform reporting format will provide the basis for the prepa-
Corrugated and Solid Fiberboard (Horizontal Plane
ration of handbooks and computerized databases.
3
Method)
1.2 This guide applies to most solid materials and to most
D3248 Test Method for Coefficient of Static Friction of
friction measuring techniques and test equipment.
3
CorrugatedandSolidFiberboard(InclinedPlaneMethod)
1.3 This standard does not purport to address all of the
D3334 Methods of Testing Fabrics Woven from Polyolefin
safety concerns, if any, associated with its use. It is the
3
Monofilaments
responsibility of the user of this standard to establish appro-
D3412 TestMethodforCoefficientofFriction,YarntoYarn
priate safety and health practices and determine the applica-
D4103 Practice for Preparation of Substrate Surfaces for
bility of regulatory limitations prior to use.
Coefficient of Friction Testing
2. Referenced Documents
E122 Practice for Calculating Sample Size to Estimate,
2
With Specified Precision, the Average for a Characteristic
2.1 ASTM Standards:
of a Lot or Process
B460 Test Method for Dynamic Coefficient of Friction and
E303 Test Method for Measuring Surface Frictional Prop-
Wear of Sintered Metal Friction Materials Under Dry
3
erties Using the British Pendulum Tester
Conditions
E510 Practice for Determining Pavement Surface Frictional
B461 Test Method for Frictional Characteristics of Sintered
3
and Polishing Characteristics Using a Small Torque De-
Metal Friction Materials Run in Lubricants
3
vice
B526 Test Method for Coefficient of Friction and Wear of
E670 Test Method for Testing Side Force Friction on Paved
Sintered Metal Friction Materials Under Dry-Clutch Con-
3
Surfaces Using the Mu-Meter
ditions
E707 TestMethodforSkidResistanceMeasurementsUsing
C808 GuideforReportingFrictionandWearTestResultsof
the North Carolina State University Variable-Speed Fric-
Manufactured Carbon and Graphite Bearing and Seal
3
tion Tester
Materials
3
F489 Test Method for Using a James Machine
D1894 Test Method for Static and Kinetic Coefficients of
F609 Test Method for Using a Horizontal Pull Slipmeter
Friction of Plastic Film and Sheeting
(HPS)
D2047 Test Method for Static Coefficient of Friction of
F695 Practice for Ranking of Test Data Obtained for Mea-
Polish-Coated Flooring Surfaces as Measured by the
surement of Slip Resistance of Footwear Sole, Heel, and
James Machine
Related Materials
F732 Test Method for Wear Testing of Polymeric Materials
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This guide is under the jurisdiction of ASTM Committee G02 on Wear and
Used in Total Joint Prostheses
Erosion and is the direct responsibility of Subcommittee G02.50 on Friction.
G40 Terminology Relating to Wear and Erosion
Current edition approved May 1, 2004. Published June 2004. Originally
approved in 1993. Last previous edition was approved in 2004 as G115 - 98 G65 Test Method for Measuring Abrasion Using the Dry
´1
(2004) . DOI: 10.1520/G0115-04.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contactASTM Customer Service at service@astm.org. ForAnnual Book ofASTM
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Standards volume information, refer to the standard’s Document Summary page on Withdrawn. The last approved version of this historical standard is referenced
the ASTM website. on www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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G115 – 04
Sand/Rubber Wheel Apparatus and a prescribed method of recording friction data is recom-
G99 Test Metho
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