• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 4
  • 1
  • 1
  • Tagged with
  • 7
  • 7
  • 6
  • 3
  • 3
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Gage R&R studie på mätutrustning för förpackningsavstånd

Andersson, Ola January 2014 (has links)
The aim of the thesis is to analyse and understand resolution, repeatability and reproducibility of the measurement system for package distance. The measurement system for package distance is already in use, no Gage R&R has been performed on the system and before spreading use of the system the quality of the system has to be understood and approved / Detta examensarbete utfördes våren och sommaren 2013 på Tetra Pak PackagingSolutions AB, Carton Economy. Huvudsakligt syfte var att analysera repeterbarhet ochreproducerbarhet samt sätta upp godkännande kriterium för mätsystemets upplösningvid mätning av förpackningsavstånd när förpackningarna transporteras påtransportbanor banor. Analys utfördes genom Gage R&R studie på mätsystemet.Förpackningsavståndet definieras som ett krav i definierade interface mellan ingåendedelsystem i ett förpackningssystem vid vidareutveckling och nyutveckling av nyadelsystem. De förpackningstyper som ingick i Gage R&R var Tetra Fino Aseptic (TFA),Tetra Wedge Aseptic (TWA) och Tetra Classic Aseptic (TCA).Efter att godkännande kriterium satts upp och Gage R&R studien genomförts drogsslutsatsen att mätsystemet lever upp till och kan anses godkänd för mätning av TFAoch TWA förpackningar. TCA förpackningar ingår ej i detta examensarbete.
2

Statistical Consulting at Draper Laboratory

Richard, Noelle M. 27 August 2014 (has links)
"This Master’s capstone was conducted in conjunction with Draper Laboratory, a non-profit research and development organization in Cambridge, Massachusetts. During a three month period, the author worked for the Microfabrication Department, assisting with projects related to statistics and quality control. The author gained real-world experience in data collection and analysis, and learned a new statistical software. Statistical methods covered in this report include regression analysis, control charts and capability, Gage R & R studies, and basic exploratory data analysis."
3

Analýza systému měření ve výrobě rotačních nástrojů / Measurement system analysis in the production of rotary tools

Pavlíček, Michal January 2013 (has links)
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.
4

Minimalizace chyb v procesu obrábění s ohledem na operátora / Error minimisation in the process of the machining with regard to the operator

Peňák, Martin January 2015 (has links)
This thesis deals with analysis of measurement system capability in the production of rotary components from the viewpoint of operator error reduction and reliability of human factors. The aim is to carry out a literature review on the topic and then to analyze the current system in the company ZNOJEMSKÉ STROJÍRNY, s.r.o. Based on the obtained data suggest appropriate corrective arrangements to improve the current situation.
5

Hodnocení kvality pneumatických lineárních pohonů / Quality assessment of pneumatic linear drives

Pecl, Tomáš January 2015 (has links)
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.
6

Návrh postupu kontroly vybraných součástí revolveru / Design of inspection procedure for selected revolver components

Úlehlová, Eva January 2020 (has links)
The goal of this master’s thesis was design of the inspection procedure for hammer and trigger of the specific revolver model. Thesis was developed in cooperation with the manufacturer of the revolvers. The theoretical part deals with the MSA methodology, which is used to assess acceptability of measurement systems. The practical part describes the current measurement system and performs gage repeatability and reproducibility study. It was confirmed that the current measurement system requires improvement. Subsequently coordinate systems were designed, based on functional features of the hammer and trigger. Automated optical measurements, based on the coordinate systems, were performed. The results from these measurements were again assessed by the gage R&R study. The analysis confirmed improvement of acceptability of the designed measurement systems. Based on these results, it is recommended to apply suggested procedures in practice. Results and recommendations of this master’s thesis can contribute to develop metrology in the company and improve the existing measurement system.
7

A method development and complete validation of coin half-cell test procedure / En metodutveckling och fullständig validering av testförfarande för knappceller

Korde, Prasad January 2022 (has links)
”Coin cell”-tillverkningen täcker hela processen från NMC-pulver till faktisk cell- och prestandautvärdering genom att cykla celler. Nydanande utveckling av elektrodmaterialen är nyckeln till att öka energitätheten hos litium-jon/metall-batterier för elfordon och nätlagring. Prestandan hos nya katodmaterial utvärderas vanligtvis genom att sätta samman knappcellsbatterier (coin cell) som s.k. halvceller med katodmaterialet som arbetselektrod och litium som motelektrod. Detta dokument beskriver ingående metodvalideringen för tillverkning av knappcellsbatterier. Dokumentet innehåller metodik, resultat och slutsatser från den genomförda metodvalideringen. Syftet med denna studie var att validera en befintlig metod för tillverkning av knappceller, och förbättra metoden genom att upptäcka de största källorna till avvikelser och eliminera dem. För validering Gauge R och R görs linjäritetstest för att validera noggrannhet och precision av metoden vilket är en del av sex sigma-strategin som används i många industrier. Verifieringen görs med livscykeltest och impedansspektroskopi. Den validerade metoden kommer att implementeras som standard i kvalitetskontrollabbet vid Northvolt Labs för att testa de elektrokemiska egenskaperna och prestandan hos kalcinerat NMC-material. / Coin cell manufacturing involves the entire process from NMC powder to the actual cell and performance evaluation through cycling. The development of novel positive electrodes is the most important way to increase the energy density of lithium-ion/metal batteries for electric vehicles and grid storage. The performance of new cathode/anode materials is usually evaluated by assembling coin half cells with a working electrode as the cathode and lithium as the counter electrode. This document describes in detail the procedure used in method validation for coin cell fabrication. The document includes the validation study methodology, results, and conclusions. The objective of this study was to validate an existing method for coin cell manufacturing, to identify and eliminate the main sources of variation, and thus to improve the method. For validation, Gage R and R measurements, linearity and bias tests are performed to verify the accuracy and precision of the method, which is part of the Six Sigma strategy used by many companies. Cycle life and electrochemical impedance spectroscopy are used to verify the developed methods. The validated method will be implemented as a standard in Northvolt’s quality control laboratory to test the electrochemical properties and performance of calcined NMC material.

Page generated in 0.053 seconds