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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These databases can be searched for material couples andtribosystems of interest. Last previous edition G – 93 e 1. April Current version: This guide is intended to promote the use of thisstandard reporting system and standard friction test methods.
Thank you for visiting our website and your interest in our free products and services. G 40 — Current edition approved October 10, It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
A superscript epsilon e indicates an editorial change since the last revision or reapproval. Standard Costing Jul 25, Link to Active This link asrm always route to the current Active version of the standard.
To the running of this website, we need your help to support us. Test surfaces that are prone to blocking ashm interlock-ing aastm surface features are particularly prone to showing abreakaway force spike. Asuperscript epsilon e indicates an editorial change since the last revision or reapproval.
We are always happy to assist you. Their use will significantly reduce the need for each laboratory to do its own testing. Weartest machines are often equipped with sensors to measurefriction forces also. The usual manifestation is a cycling decrease andsubsequent increase in the friction force as sliding proceeds Fig.
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. 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.
Historical Version s – view previous versions of standard. A number in parentheses indicates the year of last reapproval. Requirements for minimum data and a format for presenting these data are suggested. It is hoped that the use of auniform reporting format will provide the basis for the prepa-ration of handbooks and computerized databases.
Standard Guide for Measuring and Reporting Friction Coefficients
We are nonprofit website to share and download documents. The overall goal of this guide is to provide a reporting formatthat will enable computer databases qstm be readily established.
If an application involves materialssuch as friction composites, one of the brake type dynamom-eter tests may be appropriate.
Blocking is a term used to describe thetendency of some plastic materials to stick to each other afterlong periods of contact. The overall goal of this guide is to provide a reporting format that will enable computer g11 to be readily established.
The appropriate device to use is the onethat closely simulates a tribosystem of interest. Friction Wear Force Abrasive Shoe. All materials on our website are shared by users. Any of the listed tests or other acceptedtests may be used. Other important factors to simulate arenormal force contact pressurevelocity, type of motion reciprocating versus unidirectional and environment.
G 40— 93 3. No other units of measurement are included in this standard. Plasticizer migration can be the cause.
ASTM G – 04 Standard Guide for Measuring and Reporting Friction Coefficients
This breakaway force is commonlyused to calculate static friction Fig. General friction testing precautions are citedand a prescribed method of recording friction data is recom-mended. Summary of Guide 4. Requirements for minimum data and a format for present-ing these data are suggested. We Need Your Support. When pulling a steelcable over the same roll, it would be more appropriate to use astiff testing system.
If you have any questions about copyright issues, please report us to resolve them. 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. Each triboelementcontains one or more tribosurfaces.
These databases can be searched for material couples and tribosystems of interest. In this case an elastic frictionmeasuring system would be appropriate. Originallypublished as G – It is hoped that the use of a uniform reporting format will provide the basis for the preparation of handbooks and computerized databases.