ASTM G – Free download as PDF File .pdf), Text File .txt) or read online for free. ASTM G 2. Referenced Documents ASTM Standards: B Test Method for Dynamic Coefficient of Friction and. Wear of Sintered Metal Friction Materials Under Dry. ASTM G Standard Guide for Measuring and Reporting Friction Coefficients.
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ASTM G – 10() Standard Guide for Measuring and Reporting Friction Coefficients
Requirements for minimum data and a format for presenting these data are suggested. The usual manifestation is a cycling decrease andsubsequent increase in the friction force as sliding proceeds Fig.
These databases can be searched for material couples andtribosystems of interest. In addition, elastic beams containing straingages may produce different friction responses than a more rigid load celleven if used on the same friction testing machine. General friction testing precautions are citedand a prescribed method of recording friction data is recom-mended.
ASTM G – 04 Standard Guide for Measuring and Reporting Friction Coefficients
G1155 surfaces that are prone to blocking or interlock-ing of surface features are particularly prone to showing abreakaway force spike. Plasticizer migration can be the cause. This breakaway force is commonlyused to calculate static friction Fig. Requirements for minimum data and a format for present-ing these data are suggested.
Standard Guide for Measuring and Reporting Friction Coefficients
Last previous edition G – 93 e 1. Weartest machines are often equipped with sensors to measurefriction forces also. Blocking is a term used to describe thetendency of some plastic materials to stick to each other afterlong periods of contact.
To the running of this website, we need your help to support us. April V115 version: Standard Costing Jul 25, The appropriate device to use is the onethat closely simulates a tribosystem of interest. Current edition approved October 10, Summary of Guide 4.
astn The overall goal of this guide is to provide a reporting format that will enable computer databases to be readily established. We are always happy to assist you. Friction Wear Force Abrasive Shoe.
G 40 — This guide is intended to promote the use of thisstandard reporting system and standard friction test methods. Sufficient information on test conditions will be available to determine applicability of the friction data to the engineer’s specific needs.
Please download to get full document. 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.
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Other important factors to simulate arenormal force contact pressurevelocity, type of motion reciprocating versus unidirectional and environment. Asuperscript epsilon e indicates an editorial change since the last revision or reapproval.
If an application involves materialssuch as friction composites, one of the brake type dynamom-eter tests may be appropriate. The overall goal of this guide is to provide a reporting formatthat will enable computer databases to be readily established. Historical Version s – view previous versions of standard.
No other units of measurement are included in this standard. If you have any questions about copyright issues, please report us to resolve them. It is hoped that the use of auniform reporting format will provide the basis for the prepa-ration of handbooks and computerized databases. These databases can be searched for material couples and tribosystems of interest. Originallypublished as G – Any of the listed tests or other acceptedtests may be used.
Link to Active This link will always route to the current Active version of the standard. Each triboelementcontains one or more tribosurfaces. When pulling a steelcable over the same roll, it would be more appropriate to use astiff testing system. A superscript epsilon e indicates an editorial change since the last revision or reapproval. It is hoped that the use of a uniform reporting format will provide the basis for the preparation of handbooks and computerized databases.
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