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Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003277
EISBN: 978-1-62708-176-4
... 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...
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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Published: 01 August 2013
Fig. 16 Results of interlaboratory microhardness traverse gage repeatability and reproducibility study on samples with 1.3 and 3.2 mm (0.05 and 0.125 in.) effective case depth. Courtesy of Caterpillar Inc.
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Published: 01 August 2013
Fig. 41 Results of gage repeatability and reproducibility study showing typical variation in the hardened depth measurements obtained from 1.3 and 3.2 mm (0.05 and 0.13 in.) nominal case depth parts. The same two samples were measured by three trained operators, three measurements per day each
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Published: 01 January 2000
Fig. 5 Repeatability among fifteen laboratories for relaxation of Cr-Mo-V bolting steel from 0.2% strain at 500 °C
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in Gage Repeatability and Reproducibility in Hardness Testing[1]
> Mechanical Testing and Evaluation
Published: 01 January 2000
Fig. 1 Gage repeatability and reproducibility data sheet (long method) with data. UCL R , upper control limit for the range. D 4 is a statistics constant that varies according to the number of trials and is similar to the constants K 1 and K 2 in Fig. 2 .
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in Gage Repeatability and Reproducibility in Hardness Testing[1]
> Mechanical Testing and Evaluation
Published: 01 January 2000
Fig. 2 Gage repeatability and reproducibility report with data
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in Gage Repeatability and Reproducibility in Hardness Testing[1]
> Mechanical Testing and Evaluation
Published: 01 January 2000
Fig. 3 XXX The three components of inherent variablility in a repeatability and reproducibility (R & R) evaluation: equipment variation (EV), appraiser (operator) variation (AV), and material variation (MV)
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Published: 01 January 2002
Fig. 14 Diagram of the stages of delamination caused by repeated impact on a ceramic surface. Stage 1 fracturing on the surface and crushing of debris; stage 2, extrusion of pulverized debris in interstices and compaction of a fine grained film; stage 3, nucleation of cracks along the weak
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Published: 01 January 2002
Fig. 15 Schematic illustration of the dependency of the repeated impact of a ceramic object on the angle of contact. Source: Ref 31
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in Austenitic Manganese Steels
> Properties and Selection: Irons, Steels, and High-Performance Alloys
Published: 01 January 1990
Fig. 13 Flow under repeated impact for several manganese steels and for rail steel at different hardnesses. Specimens 25 mm (1 in.) in both diameter and length were struck repeatedly by blows with an impact energy of 680 J (500 ft · lbf). Source: Ref 3
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Published: 01 January 1996
Fig. 19 Relation of fatigue limit under repeated tension to fatigue limit under reversed tension-compression. Q&T, quenched and tempered. Source: Ref 7
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Published: 01 January 1996
Fig. 7 Life prediction for a repeating stress history with mean level shifts. Source: Ref 1 (p 384)
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Published: 01 January 2006
Fig. 34 Repeated bending and straightening of a blank edge in a drawbead
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Published: 01 January 2006
Fig. 8 Imine-isocyanate chemical reaction scheme. R, R′, and R″ are repeating polymer chains. If the imine is aldimine, X is H; if it is ketimine, X is methyl or greater. In minor II, Y=X−2H; for example, if X is CH 3 , then Y is CH.
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Published: 01 January 2006
Fig. 2 Schematic of the repeating components of the phosphoric acid fuel cell power generation section
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Published: 01 January 2006
Fig. 3 Schematic of the repeating components of the molten carbonate fuel cell power generation section
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in Thermoreactive Deposition/Diffusion Process for Surface Hardening of Steels
> Steel Heat Treating Fundamentals and Processes
Published: 01 August 2013
Fig. 28 Comparison of number of repeated impacts that lead to flaking of coatings in repeated hammering with a cemented carbide ball of 6.35 mm (0.25 in.) diameter. TRD, thermoreactive deposition/diffusion; PCVD, plasma chemical vapor deposition; PVD, physical vapor deposition
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Published: 15 January 2021
Fig. 16 Schematic diagram of the stages of delamination caused by repeated impact on a ceramic surface. Stage 1, fracturing on the surface and crushing of debris; stage 2, extrusion of pulverized debris in interstices and compaction of a fine-grained film; stage 3, nucleation of cracks along
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