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Description of ASTM-G117 2013ASTM G117 - 13Standard Guide for Calculating and Reporting Measures of Precision Using Data from Interlaboratory Wear or Erosion TestsActive Standard ASTM G117 | Developed by Subcommittee: G02.20 Book of Standards Volume: 03.02 ASTM G117Significance and Use 4.1 This guide is intended to assist in developing statements of precision and supporting data that will be used in Committee G02 standards. The methods and approach are drawn from Practice E177 and E691 . It was felt that preparation of this guide and its use in Committee G02 would lead to appropriate statistical analyses and more uniformity in G02 standards regarding reporting of interlaboratory results and precision. The guide is not meant to substitute for possible use of Practices E177 or E691 in developing committee standards. 1. Scope 1.1 This guide covers and offers direction on the handling of data from interlaboratory tests for wear or erosion. It describes a format for entering data and for subsequently reporting results on measures of precision in a Committee G02 standard. It indicates methods for calculation of the needed statistical quantities. 1.2 This guide offers guidance based on a Committee G02 consensus, and exists for the purpose of emphasizing the need to use established statistical practices, and to introduce more uniformity in reporting interlaboratory test results in Committee G02 standards. 1.3 An example of how the methods described in this guide may be applied is available in personal computer format as a spreadsheet file. The purpose is to facilitate use of the methods in this guide. The example file contains all needed equations in the recommended format and can be edited to accept new data. Contact ASTM Headquarters or the Chairman of G02 for a copy of that computer file. The user must have spreadsheet software (EXCEL or compatible) available. 1.4 The methods used in this document are consistent with Practices E691 and E177 .
ASTM Standards E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method G65 Test Method for Measuring Abrasion Using the Dry Sand/Rubber Wheel Apparatus G76 Test Method for Conducting Erosion Tests by Solid Particle Impingement Using Gas Jets G77 Test Method for Ranking Resistance of Materials to Sliding Wear Using Block-on-Ring Wear Test Keywords erosion; precision; repeatability; reproducibility; wear; ICS Code ICS Number Code 17.040.20 (Properties of surfaces); 19.060 (Mechanical testing) DOI: 10.1520/G0117 ASTM International is a member of CrossRef. ASTM G117The following editions for this book are also available...This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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