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Dissertations / Theses on the topic 'Plastic working'

Author: Grafiati

Published: 28 May 2022

Last updated: 30 July 2025

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1

Tabatabai, Mohammad. "Projektering med hänsyn till arbetsmiljö i golvbranschen." Thesis, KTH, Byggteknik och design, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-148820.

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Antalet personer som skadas bland golvläggare är ca 1.5 % per år och de skador som uppkommer är hand och knäskador. Det är inte den grupp inom byggindustrin som har störst skadefrekvens men endast en låg andel klarar av att arbeta ända till pensionen. Detta examensarbete har haft till syfte att ge en objektiv bild av arbetsmiljön för golvläggare, och ta fram brister och förslag på förbättringar. Det har gjorts efter önskemål från Golvbranschen Öst och Lars Johnsson som under lång tid sett problem i branschen. Jag har gjort intervjuer med golvläggare och leverantörer (se sidan 34) och observa

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2

Elia, Doron. "Touching some qualities of the 'inner child' within adults by means of plastic arts : developing a special practical methodology, working with a group of teachers." Thesis, Anglia Ruskin University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.323522.

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3

Шостак, М. М., Оксана Петрівна Гапонова, Оксана Петровна Гапонова та Oksana Petrivna Haponova. "Режим виготовлення деталі складної форми з порошкового мідно-титанового матеріалу". Thesis, Сумський державний університет, 2015. http://essuir.sumdu.edu.ua/handle/123456789/39527.

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У теперішніх умовах створення конкурентоздатної продукції машинобудування України пов'язане з удосконаленням технологій, що дозволяють отримати вироби високої якості при мінімальних витратах. У зв'язку з цим зростає роль ресурсозберігаючих технологій обробки тиском. Обробка тиском порошкових заготовок дозволяє отримати деталі вузлів тертя, які за фізико-механічними та експлуатаційними властивостями не поступаються компактним, виготовленим за традиційними технологіями.

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4

Хоменко, Олексій Віталійович, Алексей Витальевич Хоменко, Oleksii Vitaliiovych Khomenko та ін. "Двухуровневая и двухмодовая кинетика фрагментации металлов при интенсивной пластической деформации". Thesis, Сумский государственный университет, 2017. http://essuir.sumdu.edu.ua/handle/123456789/65290.

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Обработка металлов методами интенсивной пластической деформации (ИПД) позволяет получить объемные образцы с практически беспористой субмикрокристаллической (СМК) или нанокристаллической (НК) структурой, обладающей высокими физико-механическими свойствами.

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5

Хоменко, Олексій Віталійович, Алексей Витальевич Хоменко, Oleksii Vitaliiovych Khomenko та ін. "Двухуровневая и двухмодовая кинетика фрагментации металлов при интенсивной пластической деформации". Thesis, Сумский государственный университет, 2017. http://essuir.sumdu.edu.ua/handle/123456789/65669.

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Обработка металлов методами интенсивной пластической деформации (ИПД) позволяет получить объемные образцы с практически беспористой субмикрокристаллической (СМК) или нанокристаллической (НК) структурой, обладающей высокими физико-механическими свойствами.

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6

Béchade, Jean-Luc. "Texture et écrouissage de tôles en zircaloy-4 : évolutions en fonction des paramètres de laminage à froid : influence sur le comportement élastique, la dilatation thermique et l'anisotropie plastique." Ecole centrale de Nantes, 1993. http://www.theses.fr/1993NANT2083.

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Les travaux sur le lien entre la fabrication et la texture à partir de tôles en zircaloy-4 laminées à froid permettent de quantifier l'influence du type de laminage, du taux d'écrouissage et du traitement thermique sur la texture et les caractéristiques mécaniques résultantes. Ces travaux sont complétés par une analyse de l'état structural et des niveaux de contrainte induits au cours des différents traitements mécaniques et thermiques. Le laminage unidirectionnel suivant la direction initiale de laminage ne fait qu'augmenter l'anisotropie du produit initial, sans modifier le type de texture.

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7

PEREIRA, SILVIO A. de L. "Estudo da influência da deformação plastica na cinética de nitretação em aços inoxidáveis AISI 304 e 316." reponame:Repositório Institucional do IPEN, 2012. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10156.

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Made available in DSpace on 2014-10-09T12:35:25Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:05:42Z (GMT). No. of bitstreams: 0<br>Dissertação (Mestrado)<br>IPEN/D<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP

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8

Beaude, Nicolas. "Etude théorique et expérimentale du comportement élasto-plastique et de la localisation de la déformation dans les monocristaux." Paris 13, 1988. http://www.theses.fr/1988PA132005.

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Etude experimentale sur des monocristaux en superalliage à base de nickel soumis à des essais à chaud d'écrouissage cyclique à basse fréquence. Observation d'un phénomene d'instabilité plastique accompagné de la formation de lignes de glissement cristallographiques sur le fut de l'éprouvette. Modélisation du comportement élasto-plastique par une généralisation de la loi de schmid. L'extension de la loi de normalite permet de déterminer la direction de l'écoulement plastique et les systèmes actifs du glissement octaédrique. C'est la bifurcation locale de cette loi de comportement qui rend compt

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9

Laboisse, Jean-Jacques. "Influence de la temperature et de la vitesse de deformation sur le comportement des materiaux metalliques en dehors du domaine d'elasticite." Paris, ENSAM, 1988. http://www.theses.fr/1988ENAM0003.

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Le but de cette etude est la prevision des courbes contrainte deformation a une temperature donnee connaissant les courbes contrainte-deformation a temperature ambiante. Developpement d'une theorie d'heteroplasticite conduisant dans le cas d'ecrouissage a une relation integrale dans laquelle apparaissent les parametres "memoire" et "taux de plastification". Evolution de ces grandeurs avec la temperature et la vitesse de deformation. Comparaison avec des resultats experimentaux

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10

Larsen, Anna. "Återanvändning av kemiska riskbedömningar : Förutsättningar, fördelar och svårigheter." Thesis, KTH, Ergonomi, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-262023.

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Kemiska arbetsmiljörisker förekommer inom ett flertal branscher och behöver förebyggas för att skydda arbetstagare mot ohälsa, sjukdom och olycksfall. Det förebyggande arbetet görs genom att identifierade risker bedöms och kontrolleras med ändamålsenliga åtgärder, med målet att riskerna minskar eller helt försvinner. Att genomföra kemiska riskbedömningar är dock ofta både svårt och komplext med många olika aspekter att beakta och kräver både tid och kunskap. Som ett sätt att förenkla och effektivisera processen kring kemisk riskbedömning önskar Skanska, ett företag inom bygg- och anläggningsbr

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11

GABRIEL, LEANDRO. "Preparação, irradiação e caracterização de blendas PEAD reciclado/EPDM." reponame:Repositório Institucional do IPEN, 2016. http://repositorio.ipen.br:8080/xmlui/handle/123456789/26946.

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Submitted by Marco Antonio Oliveira da Silva (maosilva@ipen.br) on 2016-12-22T16:34:05Z No. of bitstreams: 0<br>Made available in DSpace on 2016-12-22T16:34:05Z (GMT). No. of bitstreams: 0<br>A reciclagem de refugos é um processo estratégico que viabiliza a expansão do mercado de plásticos, podendo gerar novos produtos. A obtenção de blendas poliméricas é uma alternativa nesse processo, já que é conhecida a perda de propriedades mecânicas dos termoplásticos nas etapas de reprocessamento. Neste trabalho, o polietileno de alta densidade (PEAD) reciclado teve adições de borracha do monômero etil

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12

SALES, JORGE N. DE. "Estudo do efeito da incorporação das argilas branca de Cubati e Cloisite Na® nas propriedades do termoplástico acrilonitrila butadieno estireno submetido à radiação ionizante." reponame:Repositório Institucional do IPEN, 2016. http://repositorio.ipen.br:8080/xmlui/handle/123456789/27128.

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Submitted by Maria Eneide de Souza Araujo (mearaujo@ipen.br) on 2017-03-10T14:39:39Z No. of bitstreams: 1 22066.pdf: 9119613 bytes, checksum: 0b28a0c36e553b4d7b70c8a8a0d8d601 (MD5)<br>Made available in DSpace on 2017-03-10T14:39:39Z (GMT). No. of bitstreams: 1 22066.pdf: 9119613 bytes, checksum: 0b28a0c36e553b4d7b70c8a8a0d8d601 (MD5)<br>O polímero Acrilonitrila Butadieno Estireno (ABS) é um dos polímeros mais versáteis disponíveis nos dias de hoje. Atualmente o Brasil não produz o ABS, o que limita a indústria brasileira de plásticos a utilizar as variações deste polímero importadas, oferta

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13

林盛勇. "Developing Thermo-Elastic-Plastic Coupling Models to Investigate Metal-Working Processes." Thesis, 1991. http://ndltd.ncl.edu.tw/handle/31569632156055916363.

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14

PAN, WEN-YU, and 潘文�w. "Modified thermo-elastic-plastic finite element model for metal working process simulation." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/25929996265145087411.

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15

Chia-Yu, Kuo, and 郭家妤. "The Relationship between Working Capital, Risk and Credit Rating－The Case of Cement and Plastic Industry." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/56583373340437169342.

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碩士<br>東吳大學<br>會計學系<br>102<br>From the recent experience of Lehman Brothers and the global financial crisis, indicating short-term liquidity plays a very important role. Working capital is closely related to the daily operation of the Department and covers enterprise assets. If the enterprise lacks of working capital, the short-term liabilities of the enterprise would be unable to pay at maturity. If the enterprise lacks of working capital, the credit rating would be downgraded or unable to cope with sudden emergency funding needs. Therefore, if the company failed to grasp the sources and uses

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16

Hou, Wun-Sin, та 侯文星. "The Effects of Protium Treatment and Warm Plastic Working on α-Grain Refining and Workability of Ti-6Al-4V-xH Alloy". Thesis, 2004. http://ndltd.ncl.edu.tw/handle/79421678635027382930.

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碩士<br>國立雲林科技大學<br>機械工程系碩士班<br>92<br>This thesis studied the effects of hydrogen purity on diffusion efficiency, solution treatment temperature on the formation of equiaxed grain, aging treatment on the amount of hydride precipitation and protium treatment on workability of Ti-6Al-4V-xH alloy. The amount of hydrogen absorption will be greatly affected by the oxide film on titanium bar surface. Active treatment can increase the hydrogen content about 60% of origin. Let hydrogen flow into the furnace at the initial stage of heating rather than at the protium temperature will obtain triple hydro

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17

Ramarathnam, Jaganath. "Control and monitoring of sheet and film forming processes." Master's thesis, 2009. http://hdl.handle.net/10048/766.

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Thesis (M. Sc.)--University of Alberta, 2009.<br>Title from pdf file main screen (viewed on Dec. 30, 2009). "A thesis submitted to the Faculty of Graduate Studies and Research in partial fulfillment of the requirements for the degree of Master of Science in Process Control, Department of Chemical and Materials Engineering, University of Alberta." Includes bibliographical references.

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18

LEE, YIN, and 李穎. "Study on the Relation between Working Capital Reserves, Economic Cycle, and Corporate Liquidity－Evidence from Plastics Industry in Taiwan." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/kmkzq4.

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博士<br>東吳大學<br>會計學系<br>107<br>Whether companies are going concern is one of the managements and investors most caring about. Working capital reserves are an important role in deciding if companies are going concern. However, working capital reserves are affected by many factors, so I would like to examine the association between economic cycle, corporate liquidity, and working capital reserves. In this paper, I use financial statements of plastics industry companies in Taiwan from 2003 to 2018 to measure economic cycle and liquidity of companies. This paper shows the following results. First,

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