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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G 40— 93 3. This breakaway force is commonlyused to calculate static friction Fig. Requirements for minimum data and a format for present-ing these data are suggested.
It is hoped that the use of a uniform reporting format will provide the basis for the preparation of handbooks and computerized databases. Each triboelementcontains one or more tribosurfaces.
Current edition approved October 10, Their use will significantly reduce the need for each laboratory to do its own testing.
This guide is intended to promote the use of thisstandard reporting system and standard friction test methods. Summary of Guide 4. The use of the suggested reporting form will increase the long-term usefulness of the test results within a given laboratory g11 will facilitate the exchange of test results between wstm.
These databases can be searched for material couples andtribosystems of interest. When pulling a steelcable over the same roll, it would be more appropriate to use astiff testing system.
In this case an elastic frictionmeasuring system would be appropriate. A number in parentheses indicates the year of last reapproval. Any of the listed tests or other acceptedtests may be used. If you have any questions about copyright issues, please report us to resolve them. Link to Active This link will always route to the current Active version of the standard.
Other important factors to simulate arenormal force contact pressurevelocity, type of motion reciprocating versus unidirectional and environment. Standard Costing Jul 25, We are nonprofit website to share and download documents.
Standard – Standard Guide for Measuring and Reporting Friction Coefficients ASTM G –
We Need Your Support. The appropriate device to use is the onethat closely simulates a tribosystem of interest. April Current version: It is b115 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.
The overall goal of this guide is to provide a reporting formatthat will enable computer databases to be readily established. Blocking is a term used to describe thetendency of g115 plastic materials to stick to each other afterlong periods of contact. To the running of this website, we need your help to support us. If an application involves materialssuch as friction composites, one of the brake type dynamom-eter tests may be appropriate. These databases can be searched for material couples and tribosystems of interest.
The usual manifestation is a cycling decrease andsubsequent increase in the friction force as sliding proceeds Axtm. Originallypublished as G – Plasticizer migration can be the cause. Test surfaces that are prone to blocking or interlock-ing of surface features are particularly prone to showing abreakaway force spike. The overall goal of this guide is to provide atm reporting format that will enable computer databases to be readily established. Requirements for minimum data and a format for presenting these data are suggested.
G 40 — Weartest machines are often equipped with sensors to measurefriction forces also. No other units of measurement are included in this standard. asstm
All materials on our website are shared by users. Last previous edition G – 93 h115 1. A superscript epsilon e indicates an editorial change since the last revision or reapproval.
ASTM G – 10() Standard Guide for Measuring and Reporting Friction Coefficients
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. We are always happy to assist you.
It is hoped that the use of auniform reporting format will provide asym basis for the prepa-ration of handbooks and computerized databases.
Asuperscript epsilon e indicates an editorial change since the last revision or reapproval. Sufficient information on test conditions will be available to determine applicability of the friction data to the engineer’s specific needs. Thank you for visiting our website and your interest in our free products and services.
Standard Guide for Measuring and Reporting Friction Coefficients
Please download to get full document. General friction testing precautions are citedand a prescribed method of recording friction data is recom-mended. Friction Wear Force Abrasive Shoe.