Relevant bibliographies by topics / Gage repeatability and reproducibility

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Gage repeatability and reproducibility'

Author: Grafiati
Published: 4 June 2021
Last updated: 17 February 2022

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Journal articles on the topic "Gage repeatability and reproducibility"

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Sweeney, Shannon. "Analysis of Two-dimensional Gage Repeatability and Reproducibility." Quality Engineering 19, no. 1 (December 21, 2006): 29–37. http://dx.doi.org/10.1080/08982110601057641.

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Shirodkar, Ameya, and Suraj Rane. "Evaluation of Coordinate measuring machine using Gage Repeatability & Reproducibility." International Journal of System Assurance Engineering and Management 12, no. 1 (January 9, 2021): 84–90. http://dx.doi.org/10.1007/s13198-020-01050-2.

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Snee, Ronald D. "Interpreting operator-part interaction in gage repeatability and reproducibility studies." Quality Engineering 33, no. 3 (June 11, 2021): 395–403. http://dx.doi.org/10.1080/08982112.2021.1874013.

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Krumm, Dominik, Stefan Schwanitz, and Stephan Odenwald. "How to Assess Repeatability and Reproducibility of a Mechanical Test? An Example for Sports Engineers." Proceedings 49, no. 1 (June 15, 2020): 122. http://dx.doi.org/10.3390/proceedings2020049122.

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Several sources of variation can affect the performance of a mechanical test. Hence, the measurement system performance should be assessed. The gage repeatability and reproducibility study is a method used to assess and quantify the variation of a mechanical test. Since it seems that this method has not yet found its way into the field of sports engineering, this paper promotes its application by demonstrating a practical example based on a current problem in sports shoe development. In detail, a novel mechanical simulation to determine the forefoot bending stiffness of athletic footwear during plantar flexion movement was developed and its quality assessed. The ANOVA Gage R&R study was performed based on 64 randomized trials of eight footwear samples assessed by two appraisers. The mechanical test was evaluated as acceptable for the desired application and the resolution was quantified to be 0.04 Nm/°.
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Klaput, Pavel, David Vykydal, and Jiří Plura. "Effect of Non-Fulfillment of Assumptions on Gage Repeatability and Reproducibility Study Evaluation." Quality Production Improvement - QPI 1, no. 1 (July 1, 2019): 472–78. http://dx.doi.org/10.2478/cqpi-2019-0064.

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Abstract The evaluation of the measurement system quality has already become an integral part of quality planning activities in both the automotive and metallurgical industries. An important assumption for obtaining the most relia ble results is compliance with the basic assumptions for evaluating the variability of the measurement system. The main goal of this paper is to analyze, how the failure to meet the basic assumptions influences the evaluation of the measurement system's statistical properties. This goal is achieved by performing a detailed analysis of the latest developments in the field of measurement systems analysis aimed at verifying the assumptions of normality and uniformity. The evaluation of the effect of non-fulfillment of both assumptions on the values of the most important statistical properties of the measurement system is performed using simulated data. Suitable graphical tools are used for practical verification of both assumptions.
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Dalalah, Doraid, and Khalid Alkhaledi. "Measurement system analysis of viscosity: a Six-Sigma gage repeatability and reproducibility analysis." International Journal of Quality Engineering and Technology 8, no. 3 (2021): 229. http://dx.doi.org/10.1504/ijqet.2021.10039911.

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Alkhaledi, Khalid, and Doraid Dalalah. "Measurement system analysis of viscosity: a Six-Sigma gage repeatability and reproducibility analysis." International Journal of Quality Engineering and Technology 8, no. 3 (2021): 229. http://dx.doi.org/10.1504/ijqet.2021.116755.

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Requena Pérez, Mariano, Álvaro Zubizarreta-Macho, Pedro Colino Gallardo, Alberto Albaladejo Martínez, Daniele Garcovich, and Alfonso Alvarado-Lorenzo. "Novel Digital Measurement Technique to Analyze the Palatine Suture Expansion after Palatine Rapid Maxillary Expansion Technique." Journal of Personalized Medicine 11, no. 10 (September 27, 2021): 962. http://dx.doi.org/10.3390/jpm11100962.

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The aim of the study was to validate a novel digital measurement method to quantify the volume of the midpalatal suture after rapid maxillary expansion (RME). Material and methods: Eight patients with maxillary skeletal transverse deficiency were submitted to palatine suture expansion using the McNamara orthodontic appliance during a period of nine months. After 30 days of treatment, all patients were exposed postoperatively to a cone-beam computed tomography (CBCT) scan. Afterwards, the scans were uploaded into the three-dimensional orthodontic-planning software to allow the volumetric assessment of the palatine suture expansion through palatine rapid maxillary expansion using a McNamara appliance. The repeatability was analyzed by repeating twice the measures by a single operator and reproducibility was analyzed by repeating three times the measures by two operators, and Gage R&R statistical analysis was performed. Results: The expansion of the midpalatal suture by means of the rapid maxillary expansion technique, in terms of digital volume measurement, showed a repeatability value of 0.09% and between the two operators a reproducibility value of 0.00% was shown. Conclusions: The novel measurement technique demonstrated a high repeatability and reproducibility rate for volume assessment of the palatine suture expansion through palatine rapid maxillary expansion technique.
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Mustapha, Ghazirah, M. Saiful Aizat Shafie, Nur Hayati M. Yahaya, and Jamaluddin Mahmud. "Measurement System Analysis of VS Lite." Applied Mechanics and Materials 680 (October 2014): 447–50. http://dx.doi.org/10.4028/www.scientific.net/amm.680.447.

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Virtual Sensei Lite (VS Lite) is an inexpensive user-friendly motion analysis system. As an alternative motion capture system, it is a must for VS Lite’s user to assess the accuracy of the measurement system capability. To date, such analysis to observe the reliability and accuracy of VS Lite has not been reported. Therefore, this study proposes a procedure for assessing the accuracy and capability of the Virtual Sensei Lite using ANOVA Gage Repeatability and Reproducibility (Gage R&R) designed experiments. In this procedure, a gage R&R study is conducted to obtain replicate measurements on nine parts by three operators. The total variation due to measurement error is then observed to identify the accuracy of measurement. The study able to demonstrate on the accuracy of VS Lite as the value of total variation due to measurement error is within 10%-30%.
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Michalski, R., M. Wieczorowski, B. Gapiński, and P. Glazowski. "The use of Gage R&R in suitability analysis of a CMM used at FAMOT Pleszew." Archives of Mechanical Technology and Materials 40, no. 1 (January 1, 2020): 1–6. http://dx.doi.org/10.2478/amtm-2020-0001.

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AbstractThe subject of the article is the suitability analysis of a measuring system, specifically the Zeiss MMZ T 20 30 16 coordinate-measuring machine utilizing an extended procedure.The article outlines the measurement preparation process and presents the research station as well as the procedure for determining Repeatability & Reproducibility (R&R).
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Dissertations / Theses on the topic "Gage repeatability and reproducibility"

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Zhang, Shaozheng M. Eng Massachusetts Institute of Technology. "Statistical process control (SPC) in a high volume machining center : gage repeatability and reproducibility study." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/101528.

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Thesis: M. Eng. in Manufacturing, Massachusetts Institute of Technology, Department of Mechanical Engineering, 2015.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 80-81).
The purpose of this project is to set up a statistical process control (SPC) system in a high volume machining center to reduce the scrap rate and improve the manufacturing quality. The system is demonstrated on a machining center at Waters Corporation as part of a team internship project. This thesis focuses on the gage repeatability and reproducibility study (Gage R&R study) for the implementation of the SPC system. Based on the knowledge about the machining processes and the gages available, we select the proper gages for different dimensions to conduct the Gage R&R study. Gage capabilities are analyzed and root-cause analysis for incapable gages is performed. Related reaction plans are developed and implemented in order to improve the gage capabilities. Discussion about tolerance redesign leads to the adjustment of specifications in the manufacturing area. As a result of these efforts, we find that the existing measurement system is capable for the SPC real time inspection system. As for the final result for this entire project, we demonstrated that with the SPC system, we successfully reduce the scrap rate by half and thus offer substantial cost savings as well as improved product quality.
by Shaozheng Zhang.
M. Eng. in Manufacturing
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Pavlíček, Michal. "Analýza systému měření ve výrobě rotačních nástrojů." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-230765.

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This work deals with measurement system analysis in the production of rotary tools. The aim is to carry out literature search on the topic and then do analysis Gage R&R of the measurement system in the company ANAJ Czech s.r.o. and on the basis of the obtained data to recommend appropriate corrective arrangements to improve the current measurement system.
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Pecl, Tomáš. "Hodnocení kvality pneumatických lineárních pohonů." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-232129.

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This Master’s thesis deals with the evaluation of quality pneumatic linear drives. The theoretical part describes the problems in the field of pneumatic cylinders and statistical methods to perform the analysis. The practical part includes the execution and evaluation of the statistical analysis of the measurement process and pneumatic cylinders, also brings recommendations to optimize the measurement process. The methods used included analysis Gage R & R, Analysis control charts and data analysis using the process capability. The study was made for the purpose of improving test equipment Norgren Ltd. Used computer programs was Minitab Statistical Software and MS Excel.
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Nezdařilíková, Martina. "Analýza systému měření." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-231015.

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Aim of the thesis is suggestion of Measurement system analysis for a company in the automotive industry. There were made an analysis of requirement of ČSN EN ISO 9001 and ČSN P ISO/TS 16949. Next there are procedures for various measurement system analysis. There are camparison between company and standart’s requirements. Then there are choosen suitable method for measurement system analysis.
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Pandiripalli, Bhavani. "Repeatability and reproducibility studies: a comparison of techniques." Thesis, Wichita State University, 2010. http://hdl.handle.net/10057/3736.

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Gage Repeatability & Reproducibility (GRR) Studies have become critical in process improvement projects in the manufacturing sectors. There are various methods to conduct GRR study. However, the most widely used is the Automotive Industry Action Group (AIAG) method, which was standardized after the recognition of the importance of measurement systems. In this study, AIAG method and Wheeler’s method are compared, with specific interest in the proportions of the estimates of variation. An experimental study was designed, with factors being the operators and parts. The spectrum analyzer – Quattro, was tested for its adequacy of measurement and to understand the variability in the measurement system. In this research, vibration-impact testing was performed on Stereolithography (SL) parts and the measured feature was the natural frequency. The data was analyzed following the AIAG method and that proposed by Wheeler. From the results obtained, the Repeatability and Reproducibility were over estimated by AIAG method in comparison to Wheeler’s. The Wheeler’s method gave a better understanding of the sources of variation. Due to which, the measurement system capability could be judged without bias. Also, Wheeler’s method helps in making right decisions about the measurement system. Therefore, Wheeler’s method is strongly recommended over the AIAG.
Thesis (M.S.)--Wichita State University, College of Engineering, Dept. of Industrial and Manufacturing Engineering.
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Collberg, Christian S., and Todd A. Proebsting. "Sharing Specifications or Repeatability in Computer Systems Research." University of Arizona Library (Tucson, AZ), 2016. http://hdl.handle.net/10150/621552.

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Presentation given on October 27, 2016 at Data Reproducibility: Integrity and Transparency program as part of Open Access Week 2016.
We describe a study into the extent to which Computer Systems researchers share their code and data. Starting with 601 papers from ACM conferences and journals, we examine the papers whose results were backed by code to see for what fraction of these we would be able to obtain and build the code. Based on the results of this study, we propose a novel sharing specification scheme that requires researchers to specify the level of sharing that reviewers and readers can assume from a paper.
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Best, Timothy F. "Evaluation of effectiveness, reproducibility, and repeatability of using dentition for estimating cattle age." Thesis, Mississippi State University, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1570106.

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Study objectives were to determine the effectiveness, reproducibility, and repeatability of dental evaluation for estimating cattle age. Cattle (n = 400) aged 1.5 to 20 yr were evaluated by 3 technicians for estimated age via dentition. A subset (n = 383) was aged again 4 wk later by the same observers. Age estimations were most accurate in YOUNG (≤ 5 yr old) cattle with at least 95.7% rate of accuracy within 2 yr across all observers and observation events. For MIDDLE (6 to 10 yr old) and OLD (> 10 yr old) cattle, these accuracies were 81.5 and 62.1%, respectively. Reproducibility proved high, with all observers consistently assigning age estimates within 1 yr of one another for more than 9 out of 10 YOUNG animals; all observers agreed on at least every 8 out of 10 estimations for all age groups within 3 yr. Repeatability was less consistent.

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Keeney, Jacquelyn Nicole. "Evaluation of the Repeatability and Reproducibility of Network-Level Pavement Macrotexture Measuring Devices." Thesis, Virginia Tech, 2017. http://hdl.handle.net/10919/78721.

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The purpose of this thesis was to assess the repeatability and reproducibility of two high-speed macrotexture measuring systems. The first portion of the study collected macrotexture measurements using the two high-speed systems on the Virginia Smart Road facility and validated the reproducibility of the mean profile depth (MPD) measurements with reference CT Meter measurements. The various data sets were then compared with each other. The objective was to determine whether the two systems are collecting repeatable and reproducible data. The analysis showed that the two high-speed systems investigated have good repeatability (0.105 mm for the Ames and 0.113 mm for the SCRIM) when measuring the average MPD of the sections investigated. The two systems produce measurements that are highly-correlated (Ames R2 = 0.9591 and SCRIM R2 = 0.9157) with the reference ones obtained with the CT Meter. While the Ames systems, with the data processed using the Virginia Tech filter, measures MPD values that are very close to those of the CT Meter, with a virtually zero systematic bias. The SCRIM obtains slightly lower readings. The differences are thought to be due to the filtering of the raw pavement elevation measurements used by the SCRIM processing software to eliminate dropout and spikes in the laser measurements.
Master of Science
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Najafi, Shahriar. "Evaluation of Continuous Friction Measuring Equipment (CFME) for Supporting Pavement Friction Management Programs." Thesis, Virginia Tech, 2010. http://hdl.handle.net/10919/51244.

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It is the responsibility of pavement engineers to design pavements that provide safe and smooth riding surfaces over their entire life cycle. Each year many people around the world lose their lives in vehicle crashes, which are one of the leading causes of death in the United States (US). One of the contributing factors in many of these crashes is inappropriate friction between tires and the pavement. To minimize the impact of this factor, state Departments of Transportation (DOTs) must monitor the friction of their pavement networks systematically and regularly. Several devices are used around the world for measuring friction. Locked-wheel skid trailers are the predominant technology for roadways in the U.S. However, Continues Friction Measuring Equipment (CFME) is emerging as a practical alternative, especially for network-level monitoring. This type of technology has been used for monitoring runway friction for many years and is starting to be used also for measuring roadway friction. This thesis evaluates the different operational characteristics of CFME to provide guidelines for highway agencies interested in using this technology for supporting their friction management programs. It follows a manuscript format and is composed of two papers. The first part of the thesis presents a methodology to objectively synchronize and compare CFME measurements using cross-correlation. This methodology allows for comparing the “shape” of the friction profiles, instead of only the average friction values. The methodology is used for synchronizing friction measurements and assessing the repeatability and reproducibility of the CFME using friction measurements taken on a wide range of surfaces at the Virginia Smart Road. The proposed approach provides highway agencies with a rigorous method to process CFME measurements. The second part of the thesis evaluates the impact of several operational characteristics on the CFME measurements using a field experiment. The results of the experiment confirmed that the measurements are significantly affected by (1) the direction of testing while testing on sections of road with a significant grade, (2) water film thickness, and (3) testing speed. The experiment showed that measurements taken downhill on a 6% grade were significantly higher than those taken uphill. The analysis also verified that, consistent with previous studies, the measured friction decreases with higher water depth and testing speeds. It also showed that the change of friction with speed is approximately linear over the range of speeds used in the experiment. In general, the thesis results suggest that CFME can provide repeatable and reproducible friction profiles that can be used to support friction management programs and other asset management business functions. However, care should be taken with regard to the operational conditions during testing since the measurements are affected by several factors. Further research is needed to (1) quantify the effect of these, and potentially other, operational factors; and (2) establish standard testing condition and approaches for correcting measurements taken under other conditions.
Master of Science
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Konečný, Zdeněk. "Zlepšení opakovatelnosti a reprodukovatelnosti testů podvozkových komponent." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2009. http://www.nusl.cz/ntk/nusl-228591.

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Within the Master´s Thesis „Repeatability and Reproducibility Improvement of Suspension Components Tests“ is resolution of a problem measurement of the radial elasticity of ball joint with regard for Repeatability and Reproducibility measurement.
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Books on the topic "Gage repeatability and reproducibility"

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Standardization, International Organization for. Precision of test methods: Determination of repeatability and reproducibility for a standard test method by inter-laboratory tests = Fidelité des méthodes d'essai : détermination de la répétabilité et de la reproducibilité d'une méthode d'essai normalisée par essais interlaboratoires. 2nd ed. (Geneva?): International Organization for Standardization, 1986.

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United States. National Aeronautics and Space Administration., ed. The apparent strain stability and repeatability of a BCL3 resistance strain gage. [Washington, DC]: National Aeronautics and Space Administration, 1991.

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Book chapters on the topic "Gage repeatability and reproducibility"

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Klaput, Pavel, David Vykydal, and Jiří Plura. "EFFECT OF NON-FULFILLMENT OF ASSUMPTIONS ON GAGE REPEATABILITY AND REPRODUCIBILITY STUDY EVALUATION." In Quality Production Improvement - QPI, edited by Robert Ulewicz, 472–78. Warsaw, Poland: Sciendo, 2019. http://dx.doi.org/10.2478/9783110680591-064.

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Martin, Jonathan W. "Repeatability and Reproducibility of Field Exposure Results." In ACS Symposium Series, 2–22. Washington, DC: American Chemical Society, 2001. http://dx.doi.org/10.1021/bk-2002-0805.ch001.

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Goachet, A. G., M. Varloud, and V. Julliand. "Repeatability and reproducibility of digestibility measurements in horses fed forage based diets." In Forages and grazing in horse nutrition, 97–100. Wageningen: Wageningen Academic Publishers, 2012. http://dx.doi.org/10.3920/978-90-8686-755-4_8.

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Huckenpahler, Alison, Melissa Wilk, Brian Link, Joseph Carroll, and Ross Collery. "Repeatability and Reproducibility of In Vivo Cone Density Measurements in the Adult Zebrafish Retina." In Retinal Degenerative Diseases, 151–56. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-75402-4_19.

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Su, Jianwei, Jiancheng Li, Jianfei Wu, and Chunming Wang. "Investigation of Reproducibility and Repeatability Issue on EFT Test at IC Level to Microcontrollers." In Communications in Computer and Information Science, 171–79. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-41635-4_18.

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Römbke, J., C. Van der Wielen, and H. Moser. "Reproducibility and Repeatability of the Results of the European Ring Test on the Ecotoxicological Characterisation of Waste." In Ecotoxicological Characterization of Waste, 205–12. New York, NY: Springer New York, 2009. http://dx.doi.org/10.1007/978-0-387-88959-7_22.

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Kim, Youngwoo, and Jong Hyo Kim. "Reliability of Breast Density Estimation in Follow-Up Mammograms: Repeatability and Reproducibility of a Fully Automated Areal Percent Density Method." In Breast Imaging, 304–11. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-07887-8_43.

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"Gage Repeatability and Reproducibility in Hardness Testing[1]." In Mechanical Testing and Evaluation, 278–81. ASM International, 2000. http://dx.doi.org/10.31399/asm.hb.v08.a0003277.

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Martín-Palma, Raúl J. "Repeatability, Reproducibility, and Selectivity." In Field Guide to Optical Biosensing. SPIE, 2021. http://dx.doi.org/10.1117/3.2575468.ch16.

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"Repeatability, Reproducibility and Coefficient of Variation." In Comparing Clinical Measurement Methods, 107–14. Chichester, UK: John Wiley & Sons, Ltd, 2010. http://dx.doi.org/10.1002/9780470683019.ch9.

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Conference papers on the topic "Gage repeatability and reproducibility"

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Balta, Berna, Fazıl O¨nder So¨nmez, and Abdu¨lkadir Cengiz. "Gage Repeatability and Reproducibility Investigations of a Test Rig Using ANOVA/Xbar-R Method." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-62130.

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In an experimental study, good measurement systems are important for approaching successful decisions. The assessment of a measurement system is known as “Gage Repeatability and Reproducibility” (GR&R). “Measurement System Analysis” (MSA) should be performed at the beginning of an experimental study to ensure that the information to be collected are true representation of what is occurring in the experiment. Experimental data collected under the same condition usually show variation, which arises partly from the experimental system, partly from the measurement devices and partly from the operator who makes the measurements. MSA helps to differentiate the contribution of each source to the randomness of the data. In this way, one may see whether there is a need to reduce the measurement variation so that the data reflects basically the experimental variation. Besides, MSA gives quantitative measures for repeatability and reproducibility. Repeatability is the variation in repeated measurements taken by the same operator under the same experimental conditions. Reproducibility is the variation in data obtained by different operators taking the measurement with the same setup under the same conditions. These are measures of the consistency and precision of the data. GR&R is the most common MSA tool that analyzes the viability of an experimental set-up. Resultant GR&R will indicate overall measurement system variation as the sum of repeatability variation and reproducibility variation. Generally, GR&R % gives a measure of the suitability of the measurement system to yield acceptable data for statistical studies such as “Design Of Experiments” (DOE), “One Factor At a Time” (OFAT), “Response Surface Methodology”, etc. [1, 2]. In this paper, “Analysis of Variance” (ANOVA) and the “Average and Range” (Xbar & R) methods are used to assess the capability of a laboratory made measurement device, which is used for the investigations of a belt drive system efficiency. GR&R is applied at the design stages of the construction of the test rig and final application is presented in this study. The results prove that the test rig is capable of making experimental studies using statistical methods such as DOE and Response Surface Methodology.
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Dumesnil, Etienne, Divya Konda, Gabriel Aldaz, Hnin Ookhin, David Pickham, and Lauren Aquino Shluzas. "Design and Validation of a Dynamic Digital Ruler for Hands-Free Chronic Wound Assessment." In ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/detc2015-46997.

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This paper documents the design and validation of a measurement tool for chronic wound assessment. Using the Google Glass™ head-mounted display (HMD) as a platform for research, we developed a digital ruler to dynamically capture wound dimensions in a hands-free manner. The system consists of the Glass HMD equipped with an infrared light emitting diode (IR-LED) distance sensor, lithium polymer battery, and a custom printed circuit board. Programmed using Android 4.4.2 (API 19), orthogonal rulers along the X and Y axes are superimposed on the Glass eyepiece and calibrated for measurement accuracy. To evaluate system performance, we conducted an ANOVA Gage Repeatability and Reproducibility (R&R) analysis with six wound care nurses measuring seven artificial wounds of various dimensions, two times each. Data was analyzed using Minitab statistical software. For width measurements, the results indicate that the total Gage R&R percent contribution was 10.2%, with 4.2% attributed to equipment variation (repeatability) and 6.0% to operator variation (reproducibility). Wound-to-wound variation was 89.8%. For length measurements, the total Gage R&R percent contribution was 16.7%, with 14.1% attributed to equipment variation and 2.6% to operator variation. Wound-to-wound length variation was 83.3%. The system received positive feedback from nurses as a hands-free measurement tool for sterile wound handling. Yet, further refinements are needed to improve system accuracy and depth measurement capabilities.
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Oktay, Turker. "Automated Gaging of Surface Texture on Engine Components." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-50543.

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Surface texture of engine components such as crankshafts and camshafts is one of the most important factors that determine the performance, efficiency and the operating life of an internal combustion engine. Current practices and the challenges faced by design engineers in specifying the target surface topography to meet these goals have been reviewed. Once specified, the surface texture must be measured fast, accurately and repeatably in the rough environment of an engine manufacturing plant. The key components of an automated skidded surface finish measuring gage designed with these criteria in mind are described in this paper. The gage has 7 axes of motion and 3 stylus probes oriented in the axial and radial directions to take axial and facial measurements on journal and cam lobe surfaces and thrust bearing surfaces. The selection of surface texture parameters to best describe the desired surface texture of these engine components was investigated. The final stage of surface preparation is often the superfinishing process. The measurement gage must be able to provide the sensitivity and repeatability that are required for measuring the finely finished surfaces generated by this process. Typical surface texture results of a superfinishing process achieved on crankshafts are described. The results of a Gage Repeatability and Reproducibility (R&R) study performed on the surface texture measuring gage are presented.
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Yea Dat Chuah and JonWen Tan. "Machine design for Gauge Repeatability and Reproducibility measurement of vision modules." In 2012 IEEE Conference on Sustainable Utilization and Development in Engineering and Technology (STUDENT2012). IEEE, 2012. http://dx.doi.org/10.1109/student.2012.6408424.

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Hoong, Edmund Chan Ming. "Shortest Travel Distance For Full Reads On Least RFID Friendly Carton Stacking Configuration Using Advance DOE Techniques and Gage Reproducibility and Repeatability." In 2008 IEEE International Conference on RFID (IEEE RFID 2008). IEEE, 2008. http://dx.doi.org/10.1109/rfid.2008.4519343.

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Karrip, Kimm, Max Maschewske, and Eric Passow. "Systems Assessment of Engine Oil Consumption Through Various Paths." In ASME 2014 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/icef2014-5404.

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There is a rapid increase with application of turbochargers, variable valve timing engines, lubricant developments and other aspects that increase engine efficiency. As fuel consumption reduces through further engine developments, the engine lubricant oil consumption will become a larger contributor to engine exhaust emissions. Lubricant oil consumption can be through four systems within the turbocharged engine, which are: 1. PCV (positive crankcase ventilation), 2. VSS (valve stem seals), 3. Turbocharger, 4. PCU (power cylinder unit). Overall engine oil consumption is reliably quantified using the Tritium Tracer Oil Consumption Measurement System[1],[2] and with a gage repeatability and reproducibility study (R&R) of 6.4%. Test methods have been developed utilizing this measurement system that quantify the oil consumption contribution from the four different systems. This paper will summarize the techniques used and discuss potential challenges that new engine technologies pose on lube oil consumption.
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Esmaeeli, Roja, Haniph Aliniagerdroudbari, Seyed Reza Hashemi, Hammad Al-Shammari, Muapper Alhadri, and Siamak Farhad. "Univariate and Multivariate Gauge Repeatability and Reproducibility Analysis on the High Frequency Dynamic Mechanical Analysis (DMA) Measurement System." In ASME 2019 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/imece2019-10986.

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Abstract The quality of the collected data from a measurement system affects eventual decision making process. Therefore, the reliability of any measurement system is an important factor to be studied. Gauge repeatability and reproducibility (Gauge R&R) is the standard method to evaluate the measurement system and assess the adequacy of variation in the measurement data. Gauge R&R is a statistical tool which evaluates two main characteristics of the measurement system: repeatability and reproducibility. The Dynamic Mechanical Analysis (DMA) is a common measurement system for studying the dynamic mechanical properties of viscoelastic materials such as polymers. The newly developed High Frequency Dynamic Mechanical Analysis (HFDMA) is able to directly run the simple shear test at high frequencies without changing the specimen temperature. The complex shear modulus and damping factor of the viscoelastic materials are reported by the HFDMA system. In this study the uni-variable Gauge R&R study based on Analysis of Variance (ANOVA) is done on each measured characteristic of the HFDMA measurement system. The source of variations for each characteristic is distinguished. Then the multivariate Gauge R&R based on the Multivariate Analysis of Variance (MANOVA) is done and the percentage of multivariate Gauge R&R for the measurement with the multiple variables is reported. The results indicate that the HFDMA measurements are both repeatable and reproducible. Thus, the new HFDMA can be used as a measurement system to measure the mechanical properties of viscoelastic materials at high frequencies.
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Helmer, David B. "Modified Transient Infrared Methodology for Leading Edge Impingement Measurements." In ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/gt2014-25884.

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Modifications to the energy balance based transient IR methodology for measuring heat transfer coefficients (HTCs) are presented in this work. Improvements are shown to increase the accuracy of the method and to allow quantitative testing of complex and/or highly curved geometries. Thin-walled test articles are manufactured via rapid prototyping processes, allowing for rapid quantitative concept screening. The methodology is demonstrated with a transient heating test for two distinct leading edge impingement configurations. The gage repeatability and reproducibility is shown to be approximately 2%, providing a strong ability to resolve trends in the data. This is demonstrated with a measurement of the impact of altered gill flows and relatively small variations in the jet Reynolds number on the leading edge HTC fields. Detailed uncertainty quantification of the method is shown and uncertainty mitigation techniques are discussed. The impact of un-corrected conduction effects is also demonstrated via a comparison of corrected and uncorrected results.
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Mauk, Michael G., Richard Y. Chiou, Shraman Kadapa, Yalcin Ertekin, and Tzu-Liang (Bill) Tseng. "Using Surface Characterization for Engineering Education Laboratories." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-72264.

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A suite of surface measurement methods are described, assessed and compared for several types of materials of technological interest including silicon for solar cells, machined metal surfaces, and rapid prototyped (e.g., 3d-printed) plastic parts. We describe student laboratory projects for surface roughness characterization using different techniques including depth gauge, stylus profilometer, atomic force microscope (AFM), glossmeter, LED light scattering, laser light scattering, image processing, and wetting angle measurements. This provides instructive case studies for learning concepts of surface characterization and metrology, comparing information gained by different measurement techniques, gauge reproducibility and repeatability, optimizing post-processing in rapid prototyping, and issues for adapting measurements for automated and in-line quality assurance.
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Hudon, Mathew, and Anil Saigal. "Effect of Process Parameters on Weld Penetration During Pulsed Nd:YAG Laser Welding." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-37079.

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Weld penetration is an important parameter to be considered for given process parameters on a pulsed Nd:YAG laser welding machine. A gauge repeatability and reproducibility study (GR&R), components of variation study (COV), and design of experiments (DOE) are used to understand the relationship between the process parameters and weld penetration on 17-4PH H900, 304 Annealed, and 420 Hardened stainless steel pins joined to a 17-4PH H900 stainless steel block. These stainless steels are selected because of their common use for laser welding of medical devices. The function determined via the DOE is then confirmed empirically by trial laser welds at the determined process settings for different weld penetrations. For a given pulse duration (8 ms), laser beam focus diameter (0.4 mm) and cover gas flow rate (5 L/min), the linear regression equation describing the weld penetration, h(mm) as a function of Peak Pulse Power, Pp(W) is found to be h = 0.001657 (Pp) – 0.389 where 300W < Pp < 1100W.
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Reports on the topic "Gage repeatability and reproducibility"

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Farrell, M. Repeatability and reproducibility for coal proximate analyses. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1986. http://dx.doi.org/10.4095/304346.

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Bajic, Stanley, L. Scott Chumbley, Max Morris, and Daniel Zamzow. Validation Study of the Accuracy, Repeatability, and Reproducibility of Firearm Comparisons. Office of Scientific and Technical Information (OSTI), October 2020. http://dx.doi.org/10.2172/1724068.

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Potts, Petrina C., Li Ma, Stephen M. Graham, and Matthew A. Adler. Repeatability and reproducibility of compression strength measurements conducted according to ASTM E9. National Institute of Standards and Technology, September 2009. http://dx.doi.org/10.6028/nist.tn.1679.

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DeWitt, Matthew J., Rhonda Cook, Linda Shafer, Steven Zabarnick, and Cheryl McCormick. Evaluation of ASTM D5006 for Accuracy, Repeatability, and Reproducibility for Fuel System Icing Inhibitor (FSII) Concentrations < 0.10% by Volume and Varying Fuel Composition. Fort Belvoir, VA: Defense Technical Information Center, December 2012. http://dx.doi.org/10.21236/ada581529.

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