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ASM Handbook

Mechanical Testing and Evaluation

Edited by
Howard Kuhn
Howard Kuhn
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Dana Medlin
Dana Medlin
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ASM International
Volume
8
ISBN electronic:
978-1-62708-176-4
Publication date:
2000
Book Chapter

Gage Repeatability and Reproducibility in Hardness Testing[1]

By
Edward L. Tobolski
Edward L. Tobolski
Wilson Instruments Division, Instron Corporation
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Published:
2000
Page range:
278 - 281

Abstract

The gage repeatability and reproducibility (GRR) study is a procedure for determining the repeatability of a test instrument and the reproducibility of a specific gage in operation. This article reviews the general method of GRR studies and its application for indentation hardness testing. It describes a long method and a short method for evaluation of GRR. The article analyzes factors of hardness testing instruments and provides guidelines for hardness tests. It concludes with a list of suggestions that can improve hardness tests.

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Edward L. Tobolski, 2000. "Gage Repeatability and Reproducibility in Hardness Testing", Mechanical Testing and Evaluation, Howard Kuhn, Dana Medlin

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