ASTM G115 PDF
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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We are nonprofit website to share and download documents. The appropriate device to use is the onethat closely simulates a tribosystem of interest.
Blocking is a term used to describe thetendency of some plastic materials to stick to each other afterlong periods of contact. Their use will significantly reduce the need for each laboratory to do its own testing. Link to Active This link will always route to the current Active version of the standard. It is the responsibility of the user of this standard to establish appropriate safety, astj, and environmental practices and determine the applicability of regulatory limitations prior to use.
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ASTM Gpdf – Documents
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. G 40 — Requirements for minimum data and a format for presenting these data are suggested. The overall goal of this guide is to provide a reporting formatthat will enable computer databases to be readily established. This guide is intended to promote the use of thisstandard reporting system and standard friction test methods.
Other important factors to simulate arenormal force contact pressurevelocity, type of motion reciprocating versus unidirectional and environment. It is hoped that the use of auniform reporting format will provide the basis for the prepa-ration of handbooks and computerized databases. No other units of measurement are included in this standard. These databases can be searched for material couples and tribosystems of interest. These databases can be searched for material couples andtribosystems of interest.
This breakaway force is commonlyused to calculate static friction Fig. Last previous edition G – 93 e 1. Thank you for visiting our website and your interest in our free products and services.
Asuperscript epsilon e indicates an editorial change since the last asrm or reapproval. Current edition approved October 10, Plasticizer migration can be the cause. The usual manifestation is a cycling decrease andsubsequent increase in the friction force as sliding proceeds Fig. Historical Version s – view previous versions of standard.
Please download to get full document. Originallypublished as G – Sufficient information on test conditions will be available to determine applicability of the friction data to the engineer’s specific needs.
General friction testing precautions are citedand a prescribed method of recording friction data is recom-mended. The overall goal of this guide is to provide a reporting format astj will enable computer databases to be readily established.
Standard Costing Jul 25, When pulling a steelcable over the same roll, it would be more appropriate to use astiff testing system. Each triboelementcontains one or more tribosurfaces. All materials on our website are shared by users. In this case an elastic frictionmeasuring system would be appropriate.
Standard – Standard Guide for Measuring and Reporting Friction Coefficients ASTM G –
A superscript 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.
Weartest machines are often equipped with sensors to g15 forces also. Summary of Guide 4. It is hoped that the use of a uniform reporting format will provide the basis for the preparation of handbooks and computerized databases.
Requirements for minimum data and a format for present-ing these data are suggested.
To the running of this website, we need your help to support us. Any of the listed tests or other acceptedtests may be used. Aastm 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. 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.
A number in parentheses indicates the year of last reapproval. Test surfaces that are prone to blocking or interlock-ing of surface features are particularly prone to showing abreakaway force spike. G aastm 93 3. We Need Your Support. Friction Wear Force Abrasive Shoe. April Current version: