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Control strategies and inspection methods for welded partBaradi, Divyank January 2013 (has links)
Present and future demonstrator designs were used to demonstrate the quality assurance of welds. The NDT methods tested on prototype demonstrator parts are: visual inspection, radius gauges, throat size gauge, liquid-penetrant testing, magnetic particle testing and ultrasonics with pulse echo and phased array. The other methods like eddy current, time of flight diffraction, radiography, impression test, macro test and infrared thermographs are currently being analyzed along with their inspection costs. The control plans for present and future designs with corresponding present and future NDT methods are suggested to minimize a shift in process. Magnetic particle testing revealed a lack of fusion and cracks for fillet welds, whereas ultrasonic pulse echo and phased array identified an internal lack of fusion, inner pores/slag inclusions on butt welds. Ultrasonic PAUT & TOFD could be used for accurate defect identification and thermography for online identification of lack of penetration, depth of penetration and weld parameters. / Weight reduction by improved weld quality (WIQ)
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Svařování hliníku a jeho slitin se zaměřením na vypracování vyučovací metodiky, didaktických postupů a učebních textů pro výuku ve svářečské škole EGE, spol. s r.o. v metodě svařování podle ČSN EN ISO 4063: 131 (MIG) / Welding of aluminum and its alloys with a focus on developing teaching methodologies, teaching methods and textbooks for teaching in welding school EGE, spol. s.r.o. the welding process according to EN ISO 4063: 131VIK, Radovan January 2016 (has links)
The first part briefly defines the theory of the creation of educational materiál. The following chapters describe the history of the fusion welding, the aluminum and its alloys, definitions of basic electrical and welding terminology. Briefly is described health and safety during welding work and fire protection. The following sections describe in detail the hand welding of aluminum and its alloys, method 131 (MIG), welding machines, equipment, protective gases, gas cylinders, pressure reducing valves. Another part is focused on the defects generated during welding of aluminum and its detection and iterpretation. The final part discusses the requirements for qualification of welders.
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Caracterização mecânica e microestrutural de juntas tubulares soldadas em aço API 5L Grau B com base na norma Petrobrás N-2301 / Mechanical and microstructural characterization of tubular welded joints on API 5L grade B steel based on Brazilian National Standard Petrobras N-2301Alexandre Amaral Sgobbi 22 April 2015 (has links)
Para a certificação de um procedimento de soldagem, quer seja de alta responsabilidade na soldagem de oleodutos e gasodutos em tubulações de aço carbono ou para um uso rotineiro e diário em fábricas e oficinas, deve ser realizada uma análise profunda dos fenômenos ocorridos no material de base (MB), no metal de adição (MA) e na zona afetada pelo calor (ZAC). Por meio desta análise criteriosa na qualificação de um procedimento de soldagem, o procedimento é liberado para ser utilizado, seja qual for o objetivo final da soldagem. Apenas com a Especificação do Procedimento de Soldagem (EPS) qualificada em mãos é possível iniciar os trabalhos de soldagem, e caso esta seja seguida integralmente, o sucesso do processo está a um passo de se concretizar. Para demonstração desta interação existente entre qualificação, análise dos resultados, aprovação dos ensaios e aprovação da especificação, foi desenvolvido este trabalho utilizando o material de base na forma tubular API 5L Gr. B soldado com os processos eletrodo revestido (SMAW) e arame tubular autoprotegido (FCAW-S). Foi utilizada uma junta tubular como exemplo de estudo e qualificação de um procedimento de soldagem baseado na documentação contida na norma da Petrobrás N-2301 e em outros códigos e normas, que regem a qualificação do processo de soldagem utilizado em refinarias e plantas de produção brasileiras. Foram estudados em conjunto os resultados obtidos por meio de ensaios mecânicos, ensaios não destrutivos e microestruturais. Ambas as Especificações dos Procedimentos de Soldagem preliminares (pEPS), estabelecidas antes do início da soldagem dos dois processos de soldagem, foram aprovadas e qualificadas, satisfazendo as características macro e microscópicas, metalúrgicas e mecânicas da junta soldada. / A comprehensive analysis of the phenomena occurring in the base metal (MB), filler metal (FM) and the heat affected zone (HAZ) should be conducted to provide the qualification of the welding procedure, either in high-demand carbon steel oil & gas pipelines or standard factory & workshop daily, usual operation. By means of this thorough welding procedure qualification, the process will be released, whatever the ultimate goal of welding. Only after the welding procedure specification (WPS) is qualified, is possible to start any welding work, and being the norm fully observed, the process is nearly to start successfully. The present work has been elaborated to demonstrate the interaction of qualification, result analysis, tests and specification approval, by applying the following elements: tubular base metal API 5L grade B welded with Shielded Metal Arc Welding process (SMAW) and self-shielded Flux Cored Arc Welding process (FCAW-S). A tubular joint was used as sample for a welding procedure qualification studies based on technical documentation specified on Petrobras N-2301, a Brazilian standard, and any others codes and standards that rule welding qualification on refineries & production plants of this company. The results obtained through mechanical testing, non-destructive testing and microstructure were studied together. Both preliminary welding procedure specifications (pWPS) established before the welding of these two welding processes, have been approved and qualified. The support given by welding qualification record (WQR) allows the joints to be welded in production, and result in reliable weld bead that satisfy the macro & microscopic, metallurgical and mechanical characteristics.
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Gender, Peace and Security : Examining the assumed benefits of involving men and work on transforming masculinities in the implementation of United Nations Security Council resolutions 1325 and 1820Sveide, Linnéa January 2017 (has links)
My aim of this this thesis is to examine the assumed benefits of involving men and work on transforming masculinities when implementing the WPS (Women Peace and Security) agenda focusing on UNSCR (United Nations Security Council Resolutions) 1325 and 1820, in peacebuilding efforts and peacekeeping missions. The empirical findings derives from four semi- structured interviews with informants involved in implementing a masculinity perspective in UNSCR 1325, or informants that had conducted research of this area. A document analysis was also conducted to complement with the interviews and to dig deeper into how a focus on masculinities could be implemented. The document analysis consisted of training material from the Swedish Police force training on UNSCR 1325 for Swedish and international personnel going to UN Peacekeeping missions. The data was analysed with the theories radical feminism and R.W Connell’s masculinity theory. The thesis result indicate that the assumed benefits are multiple. The key reason to include men and to work on transforming masculinities could be that it would mean to take a holistic gender perspective, and to focus on the gendered drivers of conflict as well as the impacts of conflict.
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Svařování dílčí části Kaplanovy turbíny / Welding of sub-parts of Kaplan turbineKeprt, Michal January 2017 (has links)
Aim of this work is description of design and manufacturing by welding technology of adjustable runner blades circle of Kaplan turbine. For designing and its subsequent strength control using the finite element method were performed with using static analysis in the program SolidWorks ® 2013. Material of adjustable runner blades circle's parts was designed S 355 J2 G3, which is able to withstand a given load. In the design of technology of welding there was elected MAG-welding method, with the active gas mixture Ar +18% CO2. Additive material for welding will be OK Autrod 12.51, like it‘s marked by ESAB s.r.o. For each weld is necessary to create the welding edge, which is made on computer controlled machining machines. In the production we require strict adherence to the prescribed workflow and compliance with WPS protocol. After welding and machining of adjustable runner blades circle we will make weld test, visual examination, dye penetrant and ultrasonic examination.
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Návrh palety automatického parkovacího systému / Design of flat pallet for automatic parking garageOsmík, Jiří January 2011 (has links)
Design of flat pallet for automatic parking garage. Parking and description of automatic parking systems. Welding and weldability of materials. Electric arc welding and welding by melting electrode in protective gas by MIG/MAG method, welding instruments. Design of parking palette calculation and calculation this palette by MKP method. Process of drawing documentation for parking palette. Design of welding process and WPS. Description of annealing and zinc coating. Economic-technical analysis of palette for automatic parking system production.
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Twenty years of the UNSCR 1325 - progress for whom? : Emxamining the impact at grassroot levels in the Central African Republic, the Democratic Republic of Congo and Uganda.Roos, Ebba, Holmgren, Elsa January 2020 (has links)
Twenty years has passed since the adopted of the United Nations Security Council Resolution 1325, which aims to strengthen the gender perspective in conflict settings as well as address inequalities related to sexually gender-based violence. Still, the concrete impact it has had on sexual violence in armed conflict, is questioned. Additionally, it is questioned if it reaches the grassroot level in armed conflict settings. Thus, this study has examined what factors that may have hindered a successful implementation on a grassroot level in the Central African Republic, the Democratic Republic of Congo and Uganda. Furthermore, it has examined the concrete impact on the efforts against sexual violence in these areas. This was done by firstly, conducting a policy analysis using the “What’s the Problem Represented to be?” approach to identify underlying problematics within the resolution. Additionally, semi-structed interviews were conducted with respondents having experience in working with the resolution and/or sexual violence in armed conflict. The results showed, among other things, that the complex construction of the resolution have been a hindering factor for a successful implementation. Additionally, the concrete change for the efforts against sexual violence in conflict settings is lacking. However, the empowerment that the resolution has provided to those working with these issues, is still an important impact.
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Challenging Assumptions: Unveiling the Effects of Political Ideology on the Implementation of the Women, Peace and Security (WPS) AgendaMöhrle, Daike January 2023 (has links)
Twenty-three years after the ground-breaking UN Resolution 1325, the goal of worldwide gender equality is still not achieved. This paper investigates how a government's political ideology is related to its Women, Peace and Security (WPS) approach. The research question is addressed by arguing that the political ideology of a government influences the quality of its WPS approaches and implementation attempts differently due to varying inherent institutional norms. The hypothesis and theoretical argument suggest that left-wing governments promote gender-friendly norms and support gender equality approaches, leading to better WPS implementation. To test this hypothesis, an Ordinal Logistic Regression is run for countries worldwide that have developed at least one National Action Plan (NAP) between 2006 and 2021. The empirical findings partially reject the hypothesis' expected direction, showing that leftist governments not only positively impact WPS quality when compared to rightist counterparts. Additionally, the research indicates that institutional norms are not a causal mechanism but another independent effect. The findings further suggest that gender inequality plays a role in WPS implementation, with greater inequality associated with better NAP quality. These contradicting findings call for future research, especially by focusing on finding new ways to measure the WPS implementation efforts.
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Contribution à la modélisation, à la simulation et à l'évaluation d'applications nomades à intelligence répartie : application à l'assistance aux voyageurs aveugles dans les transports publics et les pôles d'échangesEl Sayah, Jinane 18 December 2009 (has links) (PDF)
Le développement des systèmes de communication et de localisation et les progrès des dispositifs mobiles rendent possible la mise en œuvre de nouvelles applications et services, permettant l'accès à des informations temps réel et l'amélioration de l'intégration des personnes aveugles. Dans ce contexte, la thèse a contribué au développement d'un système d'information et de guidage destiné aux personnes aveugles dans les transports en commun. La thèse a porté sur deux aspects critiques de ce type de systèmes: la fiabilité de la transmission de données et la capacité à localiser et à guider l'utilisateur de manière robuste. Elle a d'autre part développé un environnement de simulation pour le prototypage et l'analyse du fonctionnement de l'application nomade ainsi que l'étude des aspects réseaux de communication mobile. Les travaux se sont appuyés sur les acquis des projets RAMPE et INFOMOVILLE
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The development of a competency model for auditors working in a professional services environmentMonk, Allison Lorraine 11 1900 (has links)
The aim of this research was to develop a competency model for auditors by
identifying those characteristics and behaviours that predict success as an auditor. The Work
Profiling System (WPS), the Repertory Grid Technique (RGT) and the Critical Incident Technique
(CIT) were the tools and techniques used to achieve this aim. This research was conducted in two
groups: trainee accountants (year 1-
3) and chartered accountants (year 4-5+).
The results of the research, which was conducted within one of the Big 5 auditing firms, indicated
that the competencies required of a trainee accountant are largely consistent with those of
registered chartered accountants, working in the same environment. The most noticeable
difference was the change in focus from cognitive or technical skills during the earty years
to a focus on managerial competencies in later years.
The competencies identified in this research compare well with reported models in
literature. / Industrial and Organisational Psychology / M.A. (Industrial Psychology)
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