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Dissertations / Theses on the topic 'Weibull method'

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Published: 3 June 2025

Last updated: 31 July 2025

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1

Abeyratne, Anura T. "Comparison of k-Weibull populations under random censoring /." free to MU campus, to others for purchase, 1996. http://wwwlib.umi.com/cr/mo/fullcit?p9737910.

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2

Hartley, Michael A. "A simulation study of the error induced in one-shine reliability confidence bounds for the Weiball distribution using a small sample size with heavily censored data /." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Dec%5FHartley.pdf.

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3

Güimil, Fernando. "Comparing the Maximum Likelihood Method and a Modified Moment Method to fit a Weibull distribution to aircraft engine failure time data." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1997. http://handle.dtic.mil/100.2/ADA337364.

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4

Güimil, Fernando. "Comparing the Maximum Likelihood Method and a Modified Moment Method to fit a Weibull distribution to aircraft engine failure time data." Thesis, Monterey, California. Naval Postgraduate School, 1997. http://hdl.handle.net/10945/8112.

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Approved for public release; distribution is unlimited.<br>This thesis provides a comparison of the accuracies of two methods for fitting a Weibull distribution to a set of aircraft engines time between failure data. One method used is the Maximum Likelihood Method and assumes that these engine failure times are independent. The other method is a Modified Method of Moments procedure and uses the fact that if time to failure T has a Weibull distribution with scale parameter lambda and shape parameter beta, then T(beta) has an exponential distribution with scale parameter lambda(beta). The latte

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Kuhlhoff, Igor Ribeiro. "Method for application of weibull distribution to the reliability calculation of functional safety for industrial machinery." reponame:Repositório Institucional da UFSC, 2014. https://repositorio.ufsc.br/xmlui/handle/123456789/132745.

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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia de Automação e Sistemas, Florianópolis, 2014.<br>Made available in DSpace on 2015-05-12T04:03:06Z (GMT). No. of bitstreams: 1 333353.pdf: 5233518 bytes, checksum: 599b6c026148a94e45d4b00a33f14b78 (MD5) Previous issue date: 2014<br>O desenvolvimento de sistemas elétricos e eletrônicos permitiu a massificação do uso de dispositivos eletrônicos programáveis para comando e controle de operações de sistemas técnicos. Tais dispositivos possibilitaram o desenvolvimento de sis

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Hartley, Michael A. "A simulation study of the error induced in one-sided reliability confidence bounds for the Weiball distribution using a small sample size with heavily censored data." Thesis, Monterey California. Naval Postgraduate School, 2004. http://hdl.handle.net/10945/1260.

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Approved for public release; distribution in unlimited.<br>Budget limitations have reduced the number of military components available for testing, and time constraints have reduced the amount of time available for actual testing resulting in many items still operating at the end of test cycles. These two factors produce small test populations (small sample size) with "heavily" censored data. The assumption of "normal approximation" for estimates based on these small sample sizes reduces the accuracy of confidence bounds of the probability plots and the associated quantities. This creates a pr

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7

Michaut, Vincent. "Modélisation de la fragmentation dynamique par la méthode des éléments discrets." Phd thesis, Ecole Centrale Paris, 2011. http://tel.archives-ouvertes.fr/tel-00601766.

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L'objectif de ce travail de thèse a été de modéliser avec une méthode aux éléments discrets la fracturation en tension, et plus particulièrement la fragmentation dynamique, sur des matériaux fragiles pour de hautes vitesses de déformation. La fragmentation est un phénomène irréversible, non linéaire et aléatoire. Elle intervient dans de nombreux domaines de la vie courante, quelque soit l'échelle considérée. La modélisation numérique de ce phénomène permettrait une prédiction de certains paramètres statistiques de la fragmentation, comme le nombre de fragments, la taille des fragments, la dist

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8

Rasche, Stefan. "Bestimmung von Materialparametern der elastisch-plastischen Verformung und des spröden Versagens aus Small-Punch-Kleinstproben." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2013. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-116905.

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Der Small-Punch-Test (SPT) ist eine vielversprechende minimalinvasive mechanische Prüfmethode, wenn nur sehr wenig Material für Proben zur Verfügung steht. Die vorliegende Arbeit hat das Ziel, aus Small-Punch-Kleinstproben wahre Materialparameter der elastisch-plastischen Verformung und des spröden Versagens zu bestimmen. Die Kraft-Verschiebungs-Kurve des Versuchs stellt die nichtlineare Materialantwort der inhomogen beanspruchten Probe dar. Das inverse Problem der Identifikation konstitutiver Materialparameter wird numerisch mit Hilfe von Finite-Elemente-Simulationen in Verbindung mit einem R

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9

Donato, Gustavo Henrique Bolognesi. "Efeitos de heterogeneidades mecânicas sobre forças motrizes de trinca em juntas soldadas: determinação experimental de tenacidade e extensão de metodologias de avaliação de criticidade de defeitos." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/3/3135/tde-02022009-161547/.

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Este trabalho apresenta uma avaliação dos efeitos de juntas soldadas dissimilares sobre forças motrizes de trinca e o desenvolvimento de procedimentos adaptados baseados em critérios mecânicos e micromecânicos para avaliação de defeitos em juntas soldadas incorporando efeitos de dissimilaridades mecânicas. A motivação central reside na forte expansão da indústria nacional de petróleo e a crescente demanda por aumento de produtividade aliado ao aumento na segurança operacional de sistemas dutoviários e estruturas correlatas. Para que tal intento seja atingido, é inicialmente apresentada uma des

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10

Konečná, Tereza. "Modely s Weibullovým rozdělením." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-318651.

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Tato diplomová práce se zabývá Weibullovými modely, přesněji dvouparametrickým Weibullovým rozdělením. Práce se zabývá odhady parametrů, a to čtyřmi variantami kvantilové metody, metodou maximální věrohodnosti a grafickou metodou Weibullova pravděpodobnostního grafu. Je uvedeno odvození odhadu parametrů pro jednovýběrovou analýzu rozptylu pro Weibullovo rozdělení. Jsou zde odvozeny vztahy pro model s konstantním parametrem alfa, s konstantním parametrem beta a s oběma konstantními parametry. Také jsou uvedeny testové statistiky pro rušivé parametry - skórový test, Waldův test a test založený n

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Lucci, Lisa. "Valutazione della resistenza a fatica di provini in Maraging Steel realizzati in Additive Manufacturing." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/19826/.

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Questo elaborato ha lo scopo di testare a fatica una serie di provini realizzati con tecniche di Additive Manufacturing e sviluppati per avere strutture tolleranti ai danni a fatica. Queste strutture sono caratterizzate dall’essere delle “Impossible Design”, cioè non possono essere create tramite le tecniche di manifattura tradizionale. Ci si focalizzerà su delle prove a flessione rotante in cui il provino di forma tradizionale viene sostituito da un tubo cavo avente lo stesso peso del provino tradizionale, con una geometria interna gerarchica. In questo modo, quando dalla superficie o dal p

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12

Zhu, Chang Qing. "Statistical methods for Weibull based random effects models." Thesis, University of Surrey, 1998. http://epubs.surrey.ac.uk/876/.

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13

Chen, Qian. "Bayesian Methods for Estimation, Inference and Forecasting of Flexible Models for Value-at-Risk and Tail Conditional Expectations." Thesis, The University of Sydney, 2011. http://hdl.handle.net/2123/7863.

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Forecasting financial risk and risk measurement methods have been of increasing interest for financial market regulators and financial institutions in the past two decades. While the parametric and semi-parametric models have been widely reviewed in the academic literature, the non-parametric methods are popular in practice among the financial institutions. This thesis examines the forecasting models for Value-at-Risk (VaR) and conditional Value-at-Risk for financial return series. The aims of this thesis are to: 1. Estimate and forecast the potential skewness and dynamics in higher moments

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14

Azevedo, Danilo CÃsar Rodrigues. "Heuristic methods applied on Weibull curve fitting in wind energy." Universidade Federal do CearÃ, 2015. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=14702.

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CoordenaÃÃo de AperfeÃoamento de Pessoal de NÃvel Superior<br>The application of heuristics optimization has proven quite effective when compared to traditional optimization methods by differentiation. It is known that in some cases, directly minimizing the functions involved in the process can be complicated or even impossible. This work aims to develop a Weibull curve fitting methodology, using Ant Colony Optimization method and the Particle Swarm Optimization method as far as the hybridization of these. The tipical stochastic characteristic should provide good results for any wind distribut

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15

Negash, Efrem Ocubamicael. "Risk and admissibility for a Weibull class of distributions." Thesis, Stellenbosch : Stellenbosch University, 2004. http://hdl.handle.net/10019.1/50086.

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Thesis (MSc)--Stellenbosch University, 2004.<br>ENGLISH ABSTRACT: The Bayesian approach to decision-making is considered in this thesis for reliability/survival models pertaining to a Weibull class of distributions. A generalised right censored sampling scheme has been assumed and implemented. The Jeffreys' prior for the inverse mean lifetime and the survival function of the exponential model were derived. The consequent posterior distributions of these two parameters were obtained using this non-informative prior. In addition to the Jeffreys' prior, the natural conjugate prior was consid

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16

Fu, Haichen [Verfasser], and Bernd [Akademischer Betreuer] Noche. "Methods for Fitting Truncated Weibull Distributions to Logistic Models / Haichen Fu ; Betreuer: Bernd Noche." Duisburg, 2016. http://d-nb.info/1116941821/34.

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17

Lowas, Albert Frank III. "Improved Spare Part Forecasting for Low Quantity Parts with Low and Increasing Failure Rates." Wright State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=wright1432380369.

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18

Bhering, Felipe Lunardi. "Confiabilidade em sistemas coerentes: um modelo bayesiano Weibull." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/45/45133/tde-01122013-155316/.

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O principal objetivo desse trabalho é introduzir um modelo geral bayesiano Weibull hierárquico para dados censurados que estima a função de confiabilidade de cada componente para sistemas de confiabilidade coerentes. São introduzidos formas de estimação mais sólidas, sem a inserção de estimativas médias nas funções de confiabilidade (estimador plug-in). Através desse modelo, são expostos e solucionados exemplos na área de confiabilidade como sistemas em série, sistemas em paralelo, sistemas k-de-n, sistemas bridge e um estudo clínico com dados censurados intervalares. As soluções consideram qu

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19

Lin, Min. "Correlation of Bivariate Frailty Models and a New Marginal Weibull Distribution for Correlated Bivariate Survival Data." University of Cincinnati / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1307321226.

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20

Lee, Hyeon-Soo. "Approximate interval estimation methods for the reliability of systems using component data with exponential and Weibull distributions." Thesis, Monterey, California. Naval Postgraduate School, 1989. http://hdl.handle.net/10945/25699.

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21

Freeman, Laura J. "Statistical Methods for Reliability Data from Designed Experiments." Diss., Virginia Tech, 2010. http://hdl.handle.net/10919/37729.

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Product reliability is an important characteristic for all manufacturers, engineers and consumers. Industrial statisticians have been planning experiments for years to improve product quality and reliability. However, rarely do experts in the field of reliability have expertise in design of experiments (DOE) and the implications that experimental protocol have on data analysis. Additionally, statisticians who focus on DOE rarely work with reliability data. As a result, analysis methods for lifetime data for experimental designs that are more complex than a completely randomized design are extr

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22

Dickinson, Rebecca. "Statistical Methods for Improving and Maintaining Product Reliability." Diss., Virginia Tech, 2014. http://hdl.handle.net/10919/50516.

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When a reliability experiment is used, practitioners can understand better what lifetimes to expect of a product under different operating conditions and what factors are important to designing reliability into a product. Reliability experiments, however, can be very challenging to analyze because often the reliability or lifetime data tend to follow distinctly non-normal distributions and the experiments typically involve censoring. Time and cost constraints may also lead to reliability experiments with experimental protocols that are not completely randomized. In many industrial experiments,

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23

Sousa, Ricardo Coelho de. "AnÃlise e ComparaÃÃo de Sete MÃtodos NumÃricos Utilizados na DeterminaÃÃo dos ParÃmetros da Curva de Weibull Aplicados aos Dados de Velocidade do Vento Coletados na Cidade de Paracuru-CE e Camocim-CE." Universidade Federal do CearÃ, 2011. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=5694.

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Empresa Brasileira de Pesquisa AgropecuÃria<br>Esta DissertaÃÃo de Mestrado trata da anÃlise e comparaÃÃo de 7 (sete) mÃtodos numÃricos para avaliaÃÃo da eficiÃncia na determinaÃÃo dos parÃmetros para a distribuiÃÃo de Weibull, atravÃs de dados de velocidade de vento coletados nas cidades de Paracuru-Ce e Camocim-Ce, no perÃodo compreendido entre agosto de 2004 a abril de 2006, obtidos junto Ã Secretaria de Infraestrutura do CearÃ â SEINFRA. Utilizaram-se as metodologias de anÃlise de variÃncia, A raiz quadrada dos erros quadrÃticos mÃdios, do teste do qui-quadrado e da anÃlise da potÃncia, pa

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Neto, Hely FalcÃo Maia. "AnÃlise Comparativa da EficiÃncia de Sete MÃtodos NumÃricos para DeterminaÃÃo dos ParÃmetros da Curva de Weibull Utilizando Dados de Velocidade do Vento e de PotÃncia EÃlica." Universidade Federal do CearÃ, 2012. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=8936.

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nÃo hÃ<br>Para determinar o potencial eÃlico de uma regiÃo Ã de fundamental importÃncia que seja realizado um estudo sobre as caracterÃsticas intrÃnsecas do vento do local. Este trabalho aborda alguns mÃtodos numÃricos a serem empregados no cÃlculo dos parÃmetros da distribuiÃÃo de Weibull que auxilia no estudo da velocidade do vento, para que haja uma correta definiÃÃo das condiÃÃes naturais existentes. O prÃvio conhecimento destas informaÃÃes coopera no processo de tomada de decisÃo sobre a viabilidade tÃcnica na instalaÃÃo de novos parques eÃlicos industriais. Ã realizada uma anÃlise estatÃ

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Santos, Carlos Aparecido dos. "Dados de sobrevivência multivariados na presença de covariáveis e observações censuradas: uma abordagem bayesiana." Universidade Federal de São Carlos, 2010. https://repositorio.ufscar.br/handle/ufscar/4483.

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Made available in DSpace on 2016-06-02T20:04:51Z (GMT). No. of bitstreams: 1 3028.pdf: 7339557 bytes, checksum: 16711c2271b754604bfa0b0fba30290b (MD5) Previous issue date: 2010-03-04<br>In this work, we introduce a Bayesian Analysis for survival multivariate data in the presence of a covariate vector and censored observations. Different frailties or latent variables are considered to capture the correlation among the survival times for the same individual. We also introduce a Bayesian analysis for some of the most popular bivariate exponential distributions introduced in the literature. A B

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26

Frank, Petr. "Metodika zabezpečování optimální přesnosti měření v souladu s metrologickou konfirmací." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-233462.

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This thesis deals with the evaluation of accuracy of measurement and achieving the required accuracy level. This includes global analysis of the uncertainty evaluation, the calibration interval design and the creation of confirmation system. Basis of this work is in identification of all possible problems, which may occur during evaluation of accuracy and achieving the required accuracy level. The analysis is followed by suggested solutions for identified problems. It means namely the selection of probability distribution in case of uncertainty type A, evaluation of degrees of freedom in case

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Bagh, Ashwin kumar, and Nikesh kumar Behera. "Detecting shift in a Weibull process using bootstrap method." Thesis, 2007. http://ethesis.nitrkl.ac.in/4231/1/Detecting_Shift_in_a_Weibull_Process_using_Bootstrap_Method.pdf.

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Detecting a shift in a Weibull process is considered. The parametric bootstrap method is used to establish lower and upper control limits for monitoring percentiles. When process measurements have a weibull distribution small percentile is of importance when observing tensile strength and it is desirable to detect their downward shift. The performance of the proposed bootstrap percentile charts is considered based on computer simulations, and some comparison is made with the existing Weibull percentile chart. The advantage of the bootstrap method is that they are not restricted by assumptions

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Huang, Shin-Chieh, and 黃信傑. "Using Bootstrap method to Estimate the Percentile of Weibull Distribution." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/56fu79.

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碩士<br>國立交通大學<br>工業工程與管理系所<br>105<br>The distribution of many reliability data such as the lowest stress that the material can withstand will exhibit Weibull distributions, The Weibull distribution can also be used to estimate the weakest point of the weakest spot of a product or material. Since the failure of the product or material is usually occurred at it's weakest spot, it is important for the manufacturer to effectively estimate the minimum or the low percentile of the failure time of the materials to maintain the quality of the product. Previous studies developed the Maximum Likelihood E

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Huang, Szu-Ying, and 黃思縈. "Acceptance Sampling Plans under Progressive Type-II Censoring for the Weibull Lifetime Distribution Based on Bayesian Method." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/39645139179280864078.

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碩士<br>淡江大學<br>統計學系碩士班<br>95<br>The thesis employs Bayesian decision theory to establish acceptance sampling plans for the Weibull lifetime distribution based upon progressively Type-II censored data. Assume that the shape parameter of the lifetime distribution is known, but the scale parameter is random and varies from lot to lot according to a predetermined prior distribution. A loss function involving sampling cost, test cost and decision loss is proposed to describe the Bayes risk. Moreover, an algorithm is suggested to determine the optimal sampling plans which minimize the expected averag

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Weng, Erh-Cheng, and 翁爾呈. "Applying BLIEs Method to Construct a Bootstrap Control Chart for the Percentile of Start-Up Weibull Processes." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/nrws63.

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碩士<br>國立交通大學<br>工業工程與管理系所<br>107<br>With the globalization of manufacturing industry, life cycle of a product is constantly shortening.Consequently, the reliability of a product is more important than before. In the reliability and failure analysis, we often focus on the low percentile or minimum lifetime of a product.The Weibull distribution is often utilized to construct a reliability model. Therefore, the main objective of this study is to utilize the Best Linear Invariant Estimators (BLIEs) to derive the estimator of the percentile for a Weibull distribution, and then Bootstrap simulation

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Yu, Ya-Ting, and 游雅婷. "Applying MLE Method to Estimate the Low Percentile and Construct a Bootstrap Control Chart for the Low Percentile of a Start-up Weibull Process." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/g34xv4.

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碩士<br>國立交通大學<br>工業工程與管理系所<br>106<br>With the globalization of manufacturing industry, life cycle of a product is constantly shortening, while customer expectations and failure cost are continuously rising.The Reliability of a product is more important than before. In the reliability and failure analysis, we often focus on the low percentile or minimum lifetime of a product.The reliability model is constructed with the Weibull distribution. Therefore, the main objective of this study is to utilize the maximum likelihood estimation (MLE) to derive the percentile estimator of a Weibull distributi

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32

Rasche, Stefan. "Bestimmung von Materialparametern der elastisch-plastischen Verformung und des spröden Versagens aus Small-Punch-Kleinstproben." Doctoral thesis, 2012. https://tubaf.qucosa.de/id/qucosa%3A22859.

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Der Small-Punch-Test (SPT) ist eine vielversprechende minimalinvasive mechanische Prüfmethode, wenn nur sehr wenig Material für Proben zur Verfügung steht. Die vorliegende Arbeit hat das Ziel, aus Small-Punch-Kleinstproben wahre Materialparameter der elastisch-plastischen Verformung und des spröden Versagens zu bestimmen. Die Kraft-Verschiebungs-Kurve des Versuchs stellt die nichtlineare Materialantwort der inhomogen beanspruchten Probe dar. Das inverse Problem der Identifikation konstitutiver Materialparameter wird numerisch mit Hilfe von Finite-Elemente-Simulationen in Verbindung mit einem

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33

Excell, Peter S., Raed A. Abd-Alhameed, and John A. Vaul. "Currents Induced on Wired I.T. Networks by Randomly Distributed Mobile Phones - A Computational Study." 2006. http://hdl.handle.net/10454/3449.

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No<br>The probability density and exceedance probability functions of the induced currents in a screened cable connecting two enclosures, resulting from the close. presence of single and multiple mobile phones working at 900 MHz, are investigated. The analysis of the problem is undertaken using the Method of Moments, but due to weak coupling, the impedance matrix was modified to reduce the memory and time requirements for the problem, to enable it to be executed multiple times. The empirical probability distribution functions (PDFs) and exceedance probabilities for the induced currents are pre

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Chia-Pin, Huang, and 黃加斌. "Using Weibull Analysis to Estimate Different Project Duration Forecasting Methods." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/33093939460539041272.

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碩士<br>大葉大學<br>事業經營研究所<br>96<br>Recent research shows an increasing interest in developing several methods for forecasting project duration using earned value metrics. However, it seems few study on validating the effectiveness and reliability of these methods. In this report we attempt to analyze and evaluate them by introducing Weibull analysis. It is a statistical approach to evaluate stochastically the schedule performance of projects. Firstly, by Weibull analysis, the performance probability chart based on earned schedule shows more reliable results than that based on earned value. Hence,

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Lin, Ching-Hung, and 林慶泓. "Constructing the Tukey Control Chart for the Weibull Percentile of a Weibull Start-Up Process using Maximum Likelihood Estimation and Bootstrap Methods." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/6szc83.

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碩士<br>國立交通大學<br>工業工程與管理系所<br>107<br>Under the global competition of various industries, good reliability and quality of a product can make the companies win the competition and gain customer trust. The low percentile or minimum value of the product reliability is often adopted as the minimum quality requirement for a product, and the Weibull distribution is most often used to describe the reliability. For instance, the stress or reliability model for the failure time of a system or a product that can usually be adequately described by a Weibull distribution. In addition, many start-up processe

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Lian, Chung Wen, and 廉崇文. "Applying Weibull Analysis to Estimate Accuracy of Different Project Duration Forecasting Methods." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/46793234123860456235.

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碩士<br>大葉大學<br>企業管理學系碩士班<br>99<br>Recent research shows an increasing interest in developing several methods for forecasting project duration using earned value metrics. However, it seems few study on validating the effectiveness and reliability of these methods. In this report we attempt to analyze and evaluate them by introducing Weibull analysis. It is a statistical approach to evaluate stochastically the schedule performance of projects. Firstly, by weighted average composite rank, the accuracy of forecasting based on sliding moving average (SMA) shows more reliable results than that based

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Lin, Mu-Cheng, and 林牧晨. "A comparison study of different methods to estimate the Weibull parameters with interval censored data." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/6vdvy2.

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碩士<br>國立臺灣科技大學<br>工業管理系<br>104<br>In survival analysis, the inspection costs should be concerned and the interval censored data are often occurred in lifetime data analysis. In this study, we consider the non-parametric approach of Kaplan-Meier (KM) method, the maximum likelihood estimation (MLE), and the Bayesian approach and evaluate their performance of the Weibull distribution with the interval censored data. Here, MLE via the Differential Evolution (DE) algorithm and the Expectation–Maximization (EM) algorithm and Bayesian approach via Lindley’s Approximation and Markov Chain Monte Carlo

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"Optimal allocation of simple step-stress model with Weibull distributed lifetimes under type-I censoring." 2010. http://library.cuhk.edu.hk/record=b5894488.

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Lo, Kwok Yuen.<br>Thesis (M.Phil.)--Chinese University of Hong Kong, 2010.<br>Includes bibliographical references (leaves 52-53).<br>Abstracts in English and Chinese.<br>Chapter 1 --- Introduction --- p.1<br>Chapter 1.1 --- Background --- p.1<br>Chapter 1.2 --- Scope of the thesis --- p.3<br>Chapter 2 --- Lifetime Model --- p.4<br>Chapter 2.1 --- Introduction --- p.4<br>Chapter 2.2 --- Weibull Distribution --- p.4<br>Chapter 2.3 --- Step-Stress Experiment --- p.5<br>Chapter 3 --- Maximum Likelihood Estimation of Model Parameters --- p.9<br>Chapter 3.1 --- Introduction --- p.9<br>Chapt

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Goldmann, Joseph. "Schädigungsprognose mittels Homogenisierung und mikromechanischer Materialcharakterisierung." Doctoral thesis, 2017. https://tud.qucosa.de/id/qucosa%3A31075.

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In der vorliegenden Arbeit wird die Frage untersucht, ob effektive Eigenschaften von Verbunden auch nach dem Auftreten einer Dehnungslokalisierung aufgrund von entfestigendem Materialverhalten noch durch numerische Homogenisierungsmethoden berechnet werden können. Ihr Nutzen für diesen Anwendungsfall wird in der Literatur kritisch beurteilt. Aus diesem Grund werden hier systematisch alle Teilaufgaben betrachtet, die zu diesem Zweck gelöst werden müssen. Die erste dieser Aufgaben ist die Charakterisierung der einzelnen Verbundbestandteile. Zur Demonstration einer experimentell gestützten Chara

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NOVÁK, Rudolf. "Analýza spolehlivosti v oblasti IT." Master's thesis, 2009. http://www.nusl.cz/ntk/nusl-51196.

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The main goal of this diploma thesis "IT systems reliability analysis" is to analyse and suggest the best PC component seller according to criterion of minimum costs for guarantee services. Theoretical part deals with general importance of technical systems reliability and brings methodological basis for reliability analysis and describes methods and ways how to increase reliability in practise. Following part is focused on identification computer most critical component through Failure Tree Analysis method and modelling its failure-free time by using Weibull analysis. On the base of maintenan

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