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Using the Control Chart Approach to Evaluate Hardness Tester Performance / George Vander Voort

Conference Author:
Symposium on Metallography (2017 : Atlanta, GA)
Copyright Date:
2019
Physical Description:
1 online resource (10 pages) : illustrations, figures, tables
Additional Creators:
Vander Voort, George F., American Society for Testing and Materials, and ASTM International
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Summary:
The control chart data analysis approach is an ideal method to evaluate the quality of test data using a specific tester, such as a microindentation hardness tester, over a period of usage time with the same certified test block and indenter.The method described in ASTM E2554,¿̐ưStandard Practice for Estimating and Monitoring the Uncertainty of Test Results of a Test Method Using Control Chart Techniques, was used for this work.This analysis is done by plotting a means and a standard deviation control chart of the weekly or periodic verification data obtained with a certified hardness test block at a specific test force and a specific hardness level.The method is first illustrated using a Knoop hardness test block certified at a test force of 500 gf and with a long diagonal length of 116.18 ?m (527.1 HK) From this data, one can easily calculate the uncertainty of the measurements.The second example is for a 300-gf Knoop test block with a certified long diagonal length of 154.5 ?m (178.8 HK) Different problems were encountered during the use of each test block, which are readily detected using the control chart method plots.
Dates of Publication and/or Sequential Designation:
Volume 2019, Issue 1607 (March 2019)
Subject(s):
ISBN:
9780803176607(e-ISBN)
9780803176591
Digital File Characteristics:
text file PDF
Bibliography Note:
Includes bibliographical references.
Other Forms:
Also available online via the World Wide Web. Tables of contents and abstracts freely available; full-text articles available by subscription.
Full text article also available for purchase.
Also available in PDF edition.
Reproduction Note:
Electronic reproduction. W. Conshohocken, Pa. : ASTM International, 2019. Mode of access: World Wide Web. System requirements: Web browser. Access may be restricted to users at subscribing institutions.
Technical Details:
Mode of access: World Wide Web.
Source of Acquisition:
ASTM International PDF Purchase price USD25.
View MARC record | catkey: 29986481