Dissertations / Theses: 'Castone'

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Prince, Leland Fred. "Leland F. Prince's Earth Divers." BYU ScholarsArchive, 2010. https://scholarsarchive.byu.edu/etd/2085.

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My stoneware sculptures in my MFA final project were named Earth Divers because clay as a material is earth and clay is also symbolic of the Earth. The way that I physically dive into clay up to my elbows is a poetic performance. The sculptures were built in sections horizontally and then stacked vertically. I began the process by first making life size plaster molds of the human figure taken from live people. Earth Divers take their architectural structure specifically from the organic curves of the negative voids that are characteristic of the plaster figure molds. I built into these plaster molds a block or brick like section. I then removed the large block sections from the molds and stacked the sections one on top of the other combining the figurative and architectural structures with gothic influence. The sculptor, Stephen De Staebler, who works in a similar fashion, describes his work as, "... first laying the figure down and later standing it in a vertical position." The way of life that was lost with the manufacturing past of my family at Castone Brick is found in the use of industrial nostalgia by modeling I-beam shapes as part of the structure of the stacked sections. I also fired nuts, bolts, and washers of various sizes in the clay that build the surface of the human forms. The square nut seen in my work is no longer being manufactured and is symbolic of the passing of the industrial age in America. Finally, to build the surfaces of my sculptures I used slips, glazes, and a variety of clays on top of clay, and laid glass fragments on the horizontal surfaces to create a look of pooled water when my work was fired similar to what I have seen in the Lehman Caves in Baker, Nevada. "I believe there is a force in this world that lives beneath the surface, something primitive and wild that awakens when you need an extra push just to survive, like wild flowers that bloom after a fire turns the forest black. Most people are afraid of it and keep it buried deep inside themselves. But, there will always be a few people who have the courage to love what is untamed inside us." (Tim McGraw)

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2

Ferrer, Danielle. "Casting." Scholarship @ Claremont, 2018. http://scholarship.claremont.edu/scripps_theses/1082.

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White, Graham Edwin. "The resistance of selected dental casting investments to casting stresses." Thesis, University of Sheffield, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335275.

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4

Garza-Delgado, Abelardo. "A study of casting distortion and residual stresses in die casting." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1196175848.

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5

Chen, Chien-Lung. "Evaluation of aluminum die casting defects causing casting rejection during machining." Connect to resource, 1997. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1155309911.

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6

Eriksson, Mattias. "Duntarvie Castle." Thesis, KTH, Arkitektur, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-34751.

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7

Deaton, Thomas Edward. "Slave castle." Thesis, University of Iowa, 2015. https://ir.uiowa.edu/etd/1581.

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The work described in this thesis is a series of narrative prints detailing the exploits of a criminally inclined religious cult. These prints encourage an open dialogue about the nature of religious practice and serve as a cautionary tale regarding absolute power and the importance of questioning authority and generally accepted beliefs.

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Elkins, Alan P. "Last Castle." Bowling Green State University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1242326601.

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9

Osborne, Mark Albert. "Analysis of the effects of die casting process control on casting dimensional variability /." The Ohio State University, 1995. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487862399449976.

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10

Elfakharany, Essameldin F. "Qualitative Reasoning for filling pattern in high-pressure die-casting and gravity-driven casting /." The Ohio State University, 1999. http://rave.ohiolink.edu/etdc/view?acc_num=osu1488192447430967.

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11

Saxena, Pawan. "Slip casting of silicon nitride." Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=56974.

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Slip casting is a well established technique for the manufacture of traditional ceramic bodies, such as clays and whitewares. It combines complex shaping with high green densities, resulting in low shrinkage and good densification behaviour.
This method, however, has received little attention in the field of engineering ceramics especially with regard to silicon nitride. Commercial fabrication of silicon nitride, a major contender for high temperature applications due to its excellent thermomechanical properties, has been confined to hot pressing. This is an expensive process and has geometrical limitations.
Slip casting, followed by sintering, has been identified as a potentially economical alternative fabrication method, however a number of parameters have to be optimized before a good slip cast silicon nitride body can be made. The aim of the present work is to control parameters such as pH, viscosity and deflocculation in order to form dense, homogeneous, slip cast silicon nitride bodies.
A detailed investigation of the rheological properties of Si$ sb3$N$ sb4$ and careful control of processing parameters, made it possible to produce slip cast Si$ sb3$N$ sb4$ bodies having up to 97% TD on sintering. Mechanical strength values obtained by slip casting were compared with those obtained by die-pressing. Strength values of the slip cast material was limited by iron inclusions entrained in processing.

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Taylor, John A. "The lost wax casting technique." Virtual Press, 1993. http://liblink.bsu.edu/uhtbin/catkey/864921.

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The primary objective of this creative project was to fully explore and analyze the centuries old technique of lost wax casting.The secondary objective was to produce a body of work combining my creative inspirations from nature and my African culture.This body of work employed a variety of traditional metalsmithing techniques combining raised/constructed hollow ware, in a variety of metals, with cast metal forms.
Department of Art

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13

Abdullah, Zia. "Mathematical modelling of casting processes." Thesis, University of Ottawa (Canada), 1988. http://hdl.handle.net/10393/21048.

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Ragab, Adham Ezzat. "Sensitivity Analysis of Casting Distortion and Residual Stress Prediction Through Simulation Modeling and Experimental Verification." The Ohio State University, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=osu1052493015.

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15

Hogan, Patrick Alan. "Prediction and Reduction of Die Soldering." Digital WPI, 2008. https://digitalcommons.wpi.edu/etd-theses/523.

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Die Soldering occurs in aluminum permanent mold casting when the cast metal bonds with the die surface and remains stuck upon ejection of the part. Eventually, this layer builds up and production must be stopped for cleaning. It was estimated in a Contech squeeze casting plant in Pierceton, IN, that 1.5% of variable overhead can be directly attributed to die soldering. Previous work at WPI has focused on developing the mechanism of how soldering occurs. This work focuses on how that knowledge can be applied in an industrial setting. The work has focused on 4 major areas: (1) Using MAGMAsoft to predict die soldering, (2) Using surface metrology to measure die soldering, (3) Documenting the total process effects of using strontium modified casting alloys. The work has resulted in: (1) Guidelines for using MAGMAsoft to predict die soldering. The results can be incorporated into the existing MAGMA die soldering module, but provide more accurate time and temperature criteria. (2) The results of the study prove that measurement of the surface of the cast part itself can be used as a method for quantifying die soldering. (3) The total process effects of Sr-modification are reported, along with suggestions for immediate use of Sr-modification at the Pierceton, IN casting plant and guidelines for using Strontium in the future.

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Waughray, Annapurna Deborah. "Capturing caste in law : the legal regulation of caste and caste-based discrimination." Thesis, University of Liverpool, 2013. http://livrepository.liverpool.ac.uk/12553/.

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As a system of hereditary social stratification, caste is associated primarily with South Asia, particularly India, but it also exists in South Asian diaspora communities including in the United Kingdom. Discrimination based on caste affects around 167 million Dalits – formerly ‘Untouchables’ – in India alone. In the United Kingdom it is estimated that there are at least 200,000 people of Dalit origin, possibly many more. Government-commissioned research suggests strongly that discrimination and harassment based on caste also exist in this country. This thesis discusses the legal regulation of caste discrimination in India, in international human rights law and in the United Kingdom. In order to contribute to an understanding of how caste can be conceptualised legally and how caste discrimination can be regulated legally, the thesis examines how the concept of caste and the phenomenon of discrimination and inequality on grounds of caste have been defined, constructed and addressed by law. It traces the evolution of the religious, social and legal rationales for caste discrimination, and conversely the evolution of legal remedies for its elimination. Caste is a complex social phenomenon; this thesis explains and addresses the legal challenges of capturing caste in national and international law and examines the advantages and limitations of existing legal analyses and frameworks for tackling discrimination based on caste. In India, caste discrimination and inequality persist, despite constitutional and legislative measures for their elimination; this thesis examines why this is the case, identifies the lessons learned from India’s experience and suggests ways in which India could extend and improve its legal and policy responses to caste discrimination. International human rights law engagement with caste discrimination dates from the mid-1990s. The thesis explains and analyses the prohibition of caste discrimination in international human rights law and the reasons for and implications of the refusal by India, the world’s largest caste-affected country, to accept the conceptualisation of caste discrimination as a form of internationally-prohibited racial discrimination. Other international law approaches to caste discrimination (for example minority rights) are also considered and assessed. A particular focus of the research is the legal regulation of caste discrimination in the United Kingdom. Hence, the thesis undertakes a detailed analysis of the capacity of domestic discrimination law to capture caste. The Equality Act 2010 provides for the introduction, by ministerial order, of a statutory prohibition of caste discrimination by adding caste to the definition of the protected characteristic of race, but reservations have been raised about the appropriateness of legislating for caste discrimination, and as at 1 April 2013 no such order had been made. This thesis challenges the reservations to caste discrimination legislation. It explains why existing discrimination law is inadequate to capture caste, and it argues in favour of an express statutory prohibition of caste discrimination in national law, in accordance with the UK’s international human rights law obligations, as an essential – although not the sole – element of a strategy to tackle such discrimination. In doing so, the thesis also reveals the role and contribution of domestic grassroots activism in securing legal change.

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Mao, Haijing. "A numerical study of externally solidified products in the cold chamber die casting process." Connect to this title online, 2004. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1095790853.

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Thesis (Ph. D.)--Ohio State University, 2004.
Title from first page of PDF file. Document formatted into pages; contains xvi, 162 p.; also includes graphics. Includes bibliographical references (p. 158-162).

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Li, Po-ling, and 李寶玲. "Castle Peak Hospital redevelopment." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1997. http://hub.hku.hk/bib/B31983509.

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Li, Po-ling. "Castle Peak Hospital redevelopment." Hong Kong : University of Hong Kong, 1997. http://sunzi.lib.hku.hk/hkuto/record.jsp?B25956383.

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20

Johanson, Thomas. "Castle symphony : for orchestra /." Online version, 2010. http://content.wwu.edu/cdm4/item_viewer.php?CISOROOT=/theses&CISOPTR=329&CISOBOX=1&REC=9.

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21

Tomek, Jan. "Povrchová úprava kontejneru CASTOR." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-230829.

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Master’s thesis deals with the problems of the inner surface finish design for the CASTOR container. In the theoretical part are analyzed properties of metallic surfaces with their defects and various options of surface finishes for increased protection. The practical part of the thesis is focused on the design of appropriate technologies for specific requirements of the surface finish for the CASTOR container, creating test samples and their evaluation.

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22

Furtado, Michael Anthony 1958. "Islands of Castile: Artistic, Literary, and Legal Perception of the Sea in Castile-Leon, 1248-1450." Thesis, University of Oregon, 2011. http://hdl.handle.net/1794/12098.

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xiii, 322 p. : col. ill.
Before Spain encountered the Americas, it first encountered the sea. This dissertation explores the roots of that encounter by examining perceptions of the sea in late medieval Castile-Leon reflected in art, literature, and law. It analyzes the changing attitudes of the Castilians towards the sea through an examination of its perceived place in their world, underscoring the complexity of Castilian attitudes toward the dangers and opportunities presented by the marine environment. Conceptual separation and union serve as the two foundational concepts employed for the analysis of evidence from each of the three genres under examination. Each genre highlights in various ways either the strong contrast drawn between land and sea or their seeming union conceptually. These complexities are manifest in a broad variety of sources, from collections of miracle tales to fifteenth century romances. Analysis of legal distinctions between land and sea reveal significant differences in perception regarding the nature of each environment and the rights and responsibilities of Castilians acting in either. Findings include that artistic sources reveal that a fearful attitude toward the sea accentuated by helplessness before its power dominated thirteenth century imagery, contrasting with the greater unity of land and sea reflected in miniatures from fifteenth century sources. A similar pattern of separation and union emerges in the literary evidence, where fear of the loss of agency when traveling at sea in early sources gives way to fifteenth century examples that praise its value. A comparison of the laws contained in the Siete Partidas with the late medieval records of the Cortes of Castile-Leon reveals that while the Castilian monarchs tended to consider the sea as firmly outside of their realm throughout the majority of the period of this study, strategic necessity led to an inexorable growth in the importance of the sea in the affairs of the kingdom generally. Together, the evidence supports the conclusion that by the mid-fourteenth century the view of the sea as other, typical of all early Castilian sources, gave way to a fifteenth century perspective that welcomed it in many respects, laying the foundation for the development of a great maritime empire.
Committee in charge: Lisa Wolverton, Chairperson; Robert Haskett, Member; David Luebke, Member; David Wacks, Outside Member

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23

Velluvakkandi, Navaneeth. "Developing an effective die cooling technique." AUT University, 2009. http://hdl.handle.net/10292/966.

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In permanent mold casting, die design for cast aluminium alloy and magnesium alloy products includes a number of high conductivity material cooling blocks (also called channels or cooling circuits) that are aimed to extract heat away from molten metal through direct conduction heat transfer and freeze the casting as quickly as possible in a directional manner. One of the biggest problems during this solidification process occurs when the molten metal naturally shrinks away from the mould as it solidifies. This makes it increasingly difficult to efficiently and effectively cool targeted areas in the casting through conduction, since the direct contact between the solidifying casting and the cooling block is significantly reduced or even lost. A typical cooling block (termed in this thesis as a “chill”) is a cooling circuit that is embedded in a permanent mold (or die) and positioned to enable high heat transfer (effective cooling) to a targeted large section in the casting. If a large volume section in a casting does not cool efficiently and in the correct sequence in the overall product (i.e. solidification first in the furthest part from the sprue inlet followed by successive and ordered solidification towards the sprue inlet, until finally the sprue inlet itself), then it will create a “hot spot” which will create macro-shrinkage in the casting. This can create millions of dollars of waste in terms of casting rejects, lost productivity, and reworks for a given manufacturing company. When the molten metal solidifies, it shrinks by about 6.6 % for aluminium alloys and 4.0 % for magnesium alloys. This creates an air gap at the casting and mold interface. This air gap causes inefficient, random and isolated pockets of heat transfer from the casting to a contacting chill, which in turn causes a significant variation in the temperature distribution in the casting and die during solidification. A die operating in an incorrect and unstable temperature band will very likely produce adverse secondary effects in the final product such as macro shrinkage, micro shrinkage, hot tearing, gas porosity, or even misruns. This aim of this study is to theoretically understand and experimentally develop a cooling technique that can offset or close up the growing air gap and maintain high heat transfer between the casting and contacting chill, by ensuring that the chill is pushed closer into the casting at specific times during the solidification (and shrinking) process. A movable copper chill was designed and built to push forward into an insulated mold. The experiments were carried out using commercially available A356 aluminium alloy. The chill was pushed into the casting as it solidified in the mold. Studies were carried out to understand the effect of a movable chill with different cooling conditions compared to a fixed chill. Numerical simulations were conducted using developed boundary conditions in a commercial casting solidification package(ProCASTTM). The boundary condition used to emulate the air gap is a temporally distributed interfacial heat transfer coefficient function between the casting and chill and this is manually calculated using inverse modelling in an in-house developed optimisation package (OPTCASTTM) to compare and validate with experimental data. The resulting sensitivities of the casting due to different chill conditions (i.e. fixed vs. moving) are described through physical phenomenon, metallographic analysis and computational modelling. Results show that the effective cooling can be increased by 39.2 % by using movable chill with cooling compared to fixed chill with cooling. The percentage of complete contact between the casting and chill has been increased from 10 % in case of fixed chill with cooling to 76% in case of movable chill with cooling. Apart from effectiveness of cooling, the quality of casting produced with new cooling technique has significantly improved. The secondary dendrite arm spacing (SDAS) of the casting produced under the movable chill have be reduced by 26 % compared to fixed chill.

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Ledermann, Thomas H. "Submerged mold casting using heat pipes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0001/MQ44006.pdf.

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Pego, Guerra Marco Antonio. "Die casting design, a parametric approach." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0026/MQ27023.pdf.

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26

Persson, Anders. "On Tool Failure in Die Casting." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-3448.

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Hock, Kuah Teng. "Numerical simulation of sand casting process." Ohio : Ohio University, 1987. http://www.ohiolink.edu/etd/view.cgi?ohiou1183046313.

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Buck, Emily Jane. "Genetic variation of Castanea sativa Mill." Thesis, Bangor University, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.428823.

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Trevor, Simon. "Dimensional accuracy of investment casting shells /." [St. Lucia, Qld.], 2000. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16943.pdf.

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30

Pego-Guerra, Marco Antonio Carleton University Dissertation Engineering Mechanical and Aerospace. "Die Casting design, a parametric approach." Ottawa, 1997.

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31

Li, Ruishuo. "Temperature - induced direct casting of SiC." [S.l. : s.n.], 2001. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB9444853.

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32

Lebeau, Timothy Charles. "Brake drum production by centrifugal casting." Birmingham, Ala. : University of Alabama at Birmingham, 2008. https://www.mhsl.uab.edu/dt/2009r/lebeau.pdf.

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Trejo, Eduardo. "Centrifugal casting of an aluminium alloy." Thesis, University of Birmingham, 2011. http://etheses.bham.ac.uk//id/eprint/3041/.

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In centrifugal casting, molten metal is introduced into a mould which is rotated at high speed. The centrifugal force helps to fill thin sections but this benefit may be offset by the effect of the turbulent flow on the casting quality. In this research, the effect of direct and indirect gated mould designs on the quality and reliability of aluminium alloy investment castings made by centrifugal casting was investigated. The scatter in the ultimate bend strength and the modulus of elasticity was analyzed using the Weibull statistical technique, which showed that the Weibull modulus of both properties was significantly improved for the indirect gated cast test bars compared to the direct gated bars. A detailed microstructural characterization was carried out on the cast test bars, which included grain size, dendrite cell size and porosity. Scanning electron microscopy was used to examine and analyze the presence of defects on the fracture surfaces such as shrinkage pores, entrapped bubbles and oxide films resulting from surface turbulence during mould filling. The results indicated a clear correlation between the mechanical properties and the presence of casting defects. Water modelling experiments were carried out using purpose-built experimental centrifugal casting equipment and filling sequences recorded using a high speed video camera. The water modelling results showed that the general tendency for the direct and indirect gated mould designs was that the higher the rotational velocity, the lower the filling length and consequently the lower the filling rate. Subsequently, this information was used to validate the computer software ANSYS CFX. An excellent correlation was obtained between the experimental water modelling and simulation results for both direct and indirect gated moulds.

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Ashton, Jenna Carine. "Rachel Whiteread : casting and collecting childhood." Thesis, University of Manchester, 2014. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.634851.

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Responding to the works of artist Rachel Whiteread (b. 1963), this research aims to interrogate the social and spatial experiences of childhood, starting from the personal, childhood memory. Whiteread offers a curious collection of objects, furniture, toys, utensils, photographs and junk. Casting and collecting are Whiteread’s primary methods of artistic creation, of creative play, and these processes are at the centre of this thesis. Casting and collecting transforms objects – their uses and forms, and thus subsequent meanings and associations. Melanie Klein (1882-1960) was an early pioneer of child analysis, developing her distinctive method of the play technique. A key founder of British objects relations theory, Klein’s method incorporated creative play with objects and toys. Klein and Whiteread hold objects in common; play sits alongside casting and collecting. I use Klein’s theories to open up the childhood house of Whiteread and her methods of casting and collecting. The three chapters of this thesis, Closeted Childhoods: Closet (1988); Siblings and Seriality: Untitled [One Hundred Spaces] (1995); A Photographic Portrait of House (1993-94), draw on different aspects of Kleinian and psychoanalytical theory in response to Whiteread’s own childhood memory-work. Kleinian themes addressed include destruction and reparation, guilt and envy, loss and mourning, with the conclusion returning to that first object, the mother, and the presence of the maternal in Whiteread’s works. Primarily, I argue that Whiteread’s sculptural casts and installations are those materialised secrets of hidden and concealed childhoods denied by a mythology of familial unity. Significantly, I consider how the autobiographical childhood remembrance holds relevance for wider concerns of social and spatial experience – public and private.

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KING-NYGREN, ELIAS. "Analysis of Complex 3D-Concrete Casting." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-299789.

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Concrete is the second most used material in the world and is primarily used within the construction industry. It is however also used for making decorative and functional smaller products within various industries. Manufacturing with concrete can be done with different manufacturing techniques, the most common technique being concrete casting in molds. This project was conducted at Arclight AB in Stockholm, a company on the verge of starting production of molds for casting concrete products. With many different manufacturing techniques at their disposal, it is however difficult for them to know which manufacturing technique should be used for which type of mold. The goal of this project is to compare the available manufacturing techniques at Arclight and see which are most suitable for mold manufacturing. The background research and preparation resulted in three segments of the casting process which needed to be analyzed: choice of concrete, choice post-processing technique, and choice of manufacturing technique. Results from the trails of these three segments gave invaluable information for the project. Concrete trails resulted in a recommendation of a concrete with high compression strength and high water content to make the concrete viscous and flow easily into the mold. Post-processing trials resulted in different optimal post-processing techniques based on the mold material and manufacturing technique. Manufacturing trails gave in-depth information on processing larger molds and the potential problems associated with casting complex large concrete products. The final result of the project is a spreadsheet which recommends an optimal manufacturing technique based on the geometry type and number of products to be cast. Maximum cost per product, maximum machine time for manufacturing and maximum total production time for the concrete products are also stated to find the optimal manufacturing technique for each specific concrete casting project. Before using this spreadsheet as a basis for manufacturing, it should be formatted for easier use. Additional tests with applying epoxy and polyurethane resin for post-processing molds should be conducted, in addition to testing materials for manufacture of master molds for vacuum forming.
Betong är det näst mest använda råmaterialet i världen och används primärt inom byggindustrin. Det används även för tillverkning av estetiska och funktionella mindre produkter inom andra industrier. Betongprodukter kan tillverkas med flera olika tillverkningstekniker, där den vanligaste är gjutning av betong i gjutformar. Detta projekt var utfört hos Arclight AB i Stockholm, ett företag som är i början av att starta produktion av gjutformar för gjutning av betongprodukter. Med så många olika tillverkningstekniker hos företaget är det svårt att veta vilken tillverkningsteknik som är bäst lämpad för vilken typ av gjutform. Målet med detta projekt är att jämföra de olika tillverkningstekniker Arclight har och se vilka är mest lämpade för tillverkning av gjutformar. Bakgrundsforskningen och förberedandet resulterade i tre segment av gjutprocessen som behövde analyseras; val av betong, val av ytbehandlingsteknik, och val av tillverkningsteknik. Testerna inom dessa tre segment gav ovärderlig information för projektet. Resultatet av betongtesterna var en rekommendation av betong med hög tryckhållfasthet och en stor mängd vatten i betongen för lättare hällning i gjutformen. Resultatet av ytbehandlingstesterna var olika optimala ytbehandlingar beroende på material för gjutformen, samt tillverkningsteknik. Resultatet av tillverkningstesterna gav information om stora gjutformar bäst hanteras och eventuella problem associerade med att gjuta stora komplexa betongprodukter. Slutgiltiga resultatet av projektet är ett kalkylblad vilket rekommenderar optimala tillverkningsmetoden baserat på geometritypen av produkten som ska gjutas samt antalet produkter att tillverka. Maximal kostnad per produkt, maximal maskintid för tillverkning och maximal total tillverkningstid för produktion av betongprodukterna bestäms även för att finna optimala tillverkningstekniken för varje specifikt betonggjutningsprojekt. Innan detta kalkylark används för tillverkning borde det formateras så det är mer användarvänligt. Ytterligare ytbehandlingstester med epoxyresin och polyuretanresin bör göras på gjutformar, samt även att testa material för tillverkning av formverktyg för vakumforming.

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Yin, Jun. "Numerical modelling of centrifugal casting process." Thesis, KTH, Materialvetenskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-195650.

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The centrifugal casting process is a common method for manufacturing the tubes, etc. Due to its high temperature and invisible mold, it is really difficult to know the mechanism of molten steel inside the mold. It is important to know the mechanism of the molten steel inside mold, since it will help the manufacturer to know more accuracy of the flow of the molten steel so that it can work for improving the productivity and quality of the products. Casting funnel design is the designed by Åkers for their funnel which will result in different flow behavior. In thesis work, casting funnel design will be investigated so that it can make sure that the casting funnel design can affect the flow behavior of molten steel or not. Another method of changing the diameter of nozzle was also carried out and investigated with both simulation and experiment to changing flow behavior of molten steel. It will give Åkers alternative method for changing the flow behavior to liquid steel. The mechanism of solidification in centrifugal casting is also really important since it can give manufacturer the general view of solidification process. So solidification of centrifugal casting is also investigated in the thesis work.

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Bergstedt, Joel. "Connecting casting simulations with strength analysis." Thesis, KTH, Hållfasthetslära (Avd.), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-223951.

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The finite element method and casting simulations have reached higher popularity and accuracy partly due to increase in computer power over the last couple of years. The increase in computer power has led to better simulations and hence a better reflection of reality. The development in simulations has made it possible to connect different kinds of physics and simulation tools, a type of multiphysics. In this work the connection between casting simulations and strength analysis (with finite element method) has been evaluated with focus on improving the computation accuracy at Scania.This work indicates that by implementing data from casting simulation into a strength analysis the result changes. These changes are local and often located in areas where the stress levels are large. This emphasise the importance of using casting simulation data in strength analyses. Furthermore there are a large room for improvement and some calibration should be executed before usage.A method has been developed on how to implement casting simulations into a strength analysis. This method requires a interdisciplinary connection between different groups at Scania. The result of this connection is not only a better simulation but also an exchange of knowledge regarding the product that is of interest for all involving groups.
Finita element metoden och gjutsimuleringar har utvecklats och blivit väldigt populära i och med den utveckling som har skett på dator sidan. Kraftfullare datorer har lett till att simuleringar idag mer och mer speglar verkligheten. Detta har lett till att kopplingar mellan olika simuleringsverktyg har börjat utvecklats, så kallade multifysik verktyg. I detta arbete har kopplingen mellan gjutsimuleringar och hållfasthetssimuleringar utvärderats i avseende att förbättra Scanias beräkningsprocess.Arbetet visar att genom att implementera data från gjutsimuleringar i en hållfasthetsanalys så kan beräknaren förvänta sig en förändring i resultat. Förändringen är lokal och till stor del lokaliserad i områden med höga påfrestningar. Detta visar på betydelsen av att i framtiden använda sig av gjutsimuleringsdata i hållfasthetssynpunkt. Vidare så finns det stora utvecklingsmöjligheter inom ämnet och viss kalibrering bör genomföras innan användning.Under arbetets gång har en metod utvecklats som beskriver hur kopplingen mellan gjutsimuleringar och hållfasthet bör genomföras. Metoden kräver ett tvärfunktionellt samarbete mellan olika grupper på Scania men resultatet är givande för alla inblandade. Detta då förståelse för hur komponenten beter sig är av betydelse för både gjutsimuleraren liksom hållfasthets-beräknaren.

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38

Penny, Sharyn Lee. "'A man's home is his castle' : family ideology in The Castle and The Boys /." Title page, contents and preface only, 2000. http://web4.library.adelaide.edu.au/theses/09AR/09arp416.pdf.

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Davis, Paul E. H. "From Castle Rackrent to Castle Dracular : Anglo-Irish Agrarian Fiction in the Nineteenth Centuary." Thesis, University of Buckingham, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.515497.

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This thesis provides a comprehensive and distinctive analysis of the Anglo-Irish agrarian novel. It argues that these novels constitute a significant sub-genre within Irish Studies - albeit one that has been neglected and perhaps misconstrued. The thesis is divided into three main parts, each reflecting different literary and political approaches to the Irish Land Question. All contribute to an understanding of the opportunities and problems facing authors who together created a tradition covering almost the entire nineteenth century. The thesis seeks to establish a canon consisting of eight agrarian novelists and upwards of sixteen novels. Of necessity, this canon is interrogated primarily in ideological rather than in stylistic terms. The scope is deliberately broad. Instead of focussing on minute deconstruction of the textual dynamics of a single work, the thesis explores the wider connections and complex correspondences among a substantial group of writers. Though flawed, their joint contribution to the debate on the Land Question was significant and provides valuable historical and literary insights. There have been those who minimize its significance but this thesis maintains that the Anglo-Irish agrarian novel is a genuine literary terrain that deserves proper exploration. It takes an interdisciplinary approach to the task of mapping the territory of the agrarian novel and incorporates elements of cultural materialist methodology. This is clearly evidenced in Chapter One - which partly places the sub-genre within the context of other areas in Europe that were contested in terms of land, religion or culture. The first section explores the impact of Maria Edgeworth, the first writer to present the central issues of the Land Question in prose fiction; she was also the first to offer a blueprint for a solution. The thesis seeks to demonstrate that it was Edgeworth's agenda that dominated Anglo-Irish fiction before the Famine and continued to exert a powerful influence during the remainder of the century. Gerald Griffin and the Banim brothers, the first Catholic agrarian novelists, sought to bring new dimensions to Edgeworth's essentially landowner-orientated agenda. Yet their attempts to broaden it and to make it more Irish encountered difficulties. Their desire to radicalize Edgeworth's analysis was frustrated by a loss of faith in the tenantry and arguably by an inability to use the conventional format of the three-volume novel to portray the political realities they perceived. William Carleton was the most successful agrarian novelist after Edgeworth but, despite his more flexible representation of the Land Question - involving what some critics regarded as apostasy - Carleton still remained a prisoner of Edgeworth's agenda. Significantly, all the writers discussed in this section eventually abandoned their attempts to solve the Land Question through the medium of prose fiction and turned to other areas of interest. The second section begins by examining the culturally lean years that followed the Famine. It shows that the political and literary famine was broken first by the emergence of Fenianism and then by its literary portrayal in the works of Charles Kickham and indeed in those of his apparent polar opposite - the honorary Irishman Anthony Trollope. Despite their differences however, neither Kickham nor Trollope believed that the solution to the Land Question could be found within Ireland. Rather, they looked overseas - to America (Kickham) or to England (Trollope). Regardless of their wider horizons and distinctive contributions, the solutions proposed by Kickham and Trollope proved at least as confused and contradictory as those suggested by the authors examined in the first section. The third section focuses on Thomas Moore and Bram Stoker. Earlier identification of the problems encountered by those who sought a solution to the Land Question in the context of realist literary forms raises the possibility of an alternative approach - that of fantasy. This is a common feature of Moore and Stoker's work. While Moore's book predates all the authors apart from Edgeworth, the unique, fantasy quality of his Memoirs of Captain Rock (1824), separates him from the more or less rational worlds of Edgeworth and of those who, like her, at least glimpsed a solution. Thus we must look to Moore to discover the origins of the only other work in the canon that challengeso r even surpassesE dgeworth's preeminence - Stoker's Dracula (1897). Superficially, Stoker merely transplants exploration of the Land Question from Ireland to Transylvania, but the novel also deals with issues ignored by other writers. Dracula not only looks to the past but also to the future and forms a bridge between the conventional agrarian novel and the innovative, urbanized, literary forms later pioneered by lames Joyce. This analysis facilitates a new interpretation of the categorization of the Anglo-Irish agrarian novel. The thesis concludes that earlier attempts at categorization, especially the theories of accents proposed by W. B. Yeats, Daniel Corkery and subsequent commentators (chapters I and 9), fail to understand either the most important similarities or the differences between the agrarian novelists. Instead, it proposes a new schema whose format is suggested in the three parts of the thesis described above: namely that the real divisions are between those who follow the tradition of Edgeworth, those who look to foreign solutions and those who privilege the fantastic or surreal.

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Spataro, Mark Paul. "Comparison of mechanical performance between magnesium alloy sand castings and high pressure die castings /." [St. Lucia, Qld.], 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18378.pdf.

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Allport, David M. "Evaluation of two reference planes to the horizon in the natural head position." Morgantown, W. Va. : [West Virginia University Libraries], 2002. http://etd.wvu.edu/templates/showETD.cfm?recnum=2565.

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Thesis (M.S.)--West Virginia University, 2002.
Title from document title page. Document formatted into pages; contains vii, 35 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 29-30).

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Roe, Angela D. "The Horse and The Castle." ScholarWorks@UNO, 2015. http://scholarworks.uno.edu/td/2004.

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This paper examines the production of my thesis film, “The Horse and The Castle.” I will explore the choices taken in each step of the production, from the writing process to post-production and finishing. Each area — writing, directing, production design, cinematography, editing, and sound — contained a multitude of decisions that helped to achieve my final vision for the film.

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Iversen, Fionn. "Meniscus Dynamics in Aluminium Extrusion Ingot Casting." Doctoral thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for materialteknologi, 2002. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-527.

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In the modern process of continuous Direct Chill (DC) hot top casting of aluminium extrusion ingot with gas slip, poor surface quality of the cast ingot can still be a problem. In the worst cases pronounced surface wrinkling may occur coupled with periodic zones of reduced grain size, macrosegregation and exudation at the surface. The observed surface irregularities are believed to be linked to periodic oscillations or folding of the free molten aluminium surface in the mould, the meniscus, resulting in varying solidification conditions. The focus of this work is to gain a better understanding of the dynamics of the meniscus and the effect it has on ingot surface formation.

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Vijaykumar, Adithya. "Smoothed Particle Hydrodynamics Simulation for Continuous Casting." Thesis, KTH, Matematik (Inst.), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-105554.

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This thesis proposes a way of simulating the continuous casting process of steel using Smoothed Particle Hydrodynamics (SPH). It deals with the SPH modeling of mass, momentum and the energy equations. The interpolation kernel functions required for the SPH modeling of these equations are calculated. Solidification is modeled by some particles are used to represent fluids and others solids. Elastic forces are calculated between the particle neighbors to create deformable bodies. The fluid solidifies into the elastic body when it cools down and the elastic body melts as it is heated. In continuous casting the molten metal solidifies forming a shell when it comes in contact with the cold wall. The mold of the continuous casting is modeled with a cold oscillating wall and a symmetric wall. Once the shell is formed water is sprayed on the solidified metal. If the shell is thin and cooling is not sufficient, the elastic body melts due to the effect of the hot fluid.
Den klassiska SPH-modellen för vätskor med fri yta kompletteras med värmeledning med fasomvandling och stelning: partiklar kan byta mellan vätske-tillstånd och solid-tillstånd beroende på temperaturen. Elastiska krafter beroende på avstånd mellan partiklarna aktiveras i solid-tillståndet och slås av i fluid-tillstånd så att vätskan kan stelna och senare smälta igen om så behövs. Vid stränggjutning stelnar smältan, som fylls på via ett rör, vid kontakt med en oscillerande, kall kokill-vägg, till ett elastiskt skal. Detta kyls fortlöpande genom påsprutning av vatten utanpå kokillen och direkt på skalet, som förångas. Skalet deformeras nedanför kokillen av det hydrostatiska trycket från smältan; om det ar för tunt brister det. Som demonstration gjordes en simulering där ett skal skapas, varpå man slår av vattenkylningen på ett parti: då smälter skalet och blir tunnare och till sist brister det och all smälta rinner ut genom hålet. Noggrannheten i simuleringen lämnar en del att önska men det vore mycket svårt att bygga en så komplex modell med vanlig CFD.

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45

Marcos, Rebal, and Endrias Teklu. "ANALYSIS OF CASTING PROCESS FORCOMPLEX ELECTRONIC UNIT." Thesis, Jönköping University, JTH, Mechanical Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-11545.

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Most aircraft component are currently being manufactured by machining, forging, welding and also assembling such parts. However, the possibilities of cutting cost from a single component has brought about a growing trend towards looking into casting as a possible option for manufacturing aircraft parts.

This thesis was done at the request of Saab Avitronics. It evaluates the possibilities of one aircraft part, a chassis for an electronic unit that was first designed to be machined from a blank, to be cast. The thesis goes through the multifaceted tasks of product development. Casting process selection, cast alloy selection as well as geometry modification were some of these tasks that were performed in this thesis. It also evaluates the performances of chosen casting processes, the design of gating systems as well as various process parameters set, by simulating the casting processes.

The alloy chosen was A356.0 with a T6 temper and the casting processes chosen were plaster mold casting and rheocasting. The geometry of the original chassis, which had very thin sections and undercuts which were complex to cast, was modified and made easier to cast with an acceptable slight increase of mass and size. The modification done on the geometry as well as the gating systems used had proven to be worthwhile, as the simulation of both process showed that such a part can be casted with no crucial defects foreseen. However, probable cavities might occur at the very tip of the chassis’s thin-fins – that it has for carrying away heat. Minor subsurface porosities might also be formed, which would not impair the function of the chassis. The modified chassis was made as close to as finished piece as possible, for the purpose of reducing machining costs. The cost of producing such a part by casting was also seen to be much less than machining it from blank. This could be taken as rationale for casting the chassis with thicker sections, to avoid problems that may arise in casting, and to subsequently machine these faces later, as it would still be cheaper than machining the chassis from a blank.

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Elfsberg, Jessica. "Oscillation Mark Formation in Continuous Casting Processes." Licentiate thesis, KTH, Casting of Metals, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-1653.

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47

Hosking, Timothy Donald, and mikewood@deakin edu au. "Casting yield improvement in graphitic iron castings." Deakin University. School of Engineering and Technology, 2001. http://tux.lib.deakin.edu.au./adt-VDU/public/adt-VDU20051017.122220.

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A well designed runner and feeding system should produce castings with minimal defects and low pour weight. This thesis investigates how the filling regime and solidification of the mould influences defects in the castings produced from that mould. Design guidelines to reduce such defects are proposed and tested. An existing shrinkage fault in a Grey Iron disc brake casting is simulated using a commercial finite-difference computer program. Three criteria are used to predict the defect and the effect of changes to the feeder geometry. Critical Fraction Solidification analysis is used to determine whether the feeder remains in liquid contact with the casting during solidification and this approach is shown to correctly predict the presence or absence of porosity* The feeder block is extended below the ingate of the casting to improve liquid contact between the casting and feeder without significantly increasing the feeder mass. Plant trials confirm the change to the feeder eliminates the porosity defect. The runner system and mould venting for a thin walled Ductile Iron casting are investigated. Trials show that by setting the total mould vent area to be greater than the net ingate area of the castings, the cold-shut frequency is halved. A method for runner system design based on peak linear flow velocity in the runner during mould filling is proposed. A new pressurised runner system produces castings with significantly fewer defects and reduced pour weight when runner areas are designed to maintain peak velocity below 1 m/s. Peak velocity and magnesium levels are demonstrated to be critical factors in the elimination of cold-shut defects. A pressurised runner system is also shown to isolate inclusion defects from castings more effectively than an unpressurised system. From this work, a technique is proposed which allows the yield of an existing runner and feeder system for iron castings to be improved with confidence in the results.

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Elsawy, Abdel Raouf. "Net shape continuous casting of cored rods." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ28872.pdf.

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Capps, Johnathon. "Advancements in vacuum process molding and casting." Auburn, Ala., 2005. http://repo.lib.auburn.edu/2005%20Summer/master's/CAPPS_JOHNATHON_6.pdf.

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Ali, Amer F. "Computer aided analysis of the casting process." Ohio : Ohio University, 1993. http://www.ohiolink.edu/etd/view.cgi?ohiou1174931475.

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Dissertations / Theses on the topic 'Castone'

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