Searched for: contributor:"Katgerman, L. (promotor)"
(1 - 20 of 29)

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Sosro Subroto, T.A. (author)
Direct-chill (DC) casting is one of the most common methods to produce ingots of high-strength aluminum alloys such as an AA7050. Despite of its superior mechanical properties, this alloy is prone to both hot tearing (HT) and cold cracking (CC) during DC casting. HT form above the solidus while CC occurs below the solidus temperature. CC...
doctoral thesis 2014
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Necula, B.S. (author)
Total hip arthroplasty (THA) is the most effective and safest method for treating severe degenerative, post-traumatic and other diseases of the joints. With an aging population that is increasingly active, the use of biomedical implants will continue to rise. It is estimated that more than 1,000,000 THAs are performed each year globally....
doctoral thesis 2013
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Zhang, L. (author)
The research in ultrasonic processing for metallurgical application shows a promising influence on improving casting properties of aluminium alloys. The principle of ultrasonic processing is introduction of acoustic waves with a frequency higher than 17 kHz into liquid metal. Several promising beneficial effects caused by ultrasonic processing...
doctoral thesis 2013
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Wang, L. (author)
In recent years, finite-element (FE) simulations have been extensively used in scientific research and industrial practice to analyse the extrusion process. A basic issue of FE simulations is the accuracy of the results, which is mainly determined by the viscoplastic material behaviour of aluminium alloys at elevated temperatures and the...
doctoral thesis 2012
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Slooff, F.A. (author)
doctoral thesis 2011
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Atamanenko, T.V. (author)
This thesis deals with grain refinement under the influence of ultrasonic-driven cavitation in aluminium casting processes. Three major goals of this research were: (1) to identify the mechanism of the cavitation-aided grain refinement at different stages of solidification; (2) to reveal the conditions of the stable grain refinement effect in...
doctoral thesis 2010
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Lalpoor, M. (author)
doctoral thesis 2010
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Eivani, A.R. (author)
doctoral thesis 2010
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Wittebrood, A.J. (author)
Aluminium brazing sheet is the material of choice to produce automotive heat exchangers. Although in Dutch the official translation of aluminium brazing sheet is “aluminium hardsoldeerplaat” the English name is used in the industry. Aluminium brazing sheet is basically a sandwich material and consists of an aluminium core alloy, typically an...
doctoral thesis 2009
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Ruvalcaba Jimenez, D.G. (author)
This Thesis demonstrates studies on microstructure development during the solidification of aluminium alloys. New insights of structure development are presented here. Experimental techniques such as quenching and in-situ High-brilliance X-ray microscopy were utilized to study the microstructure evolution during solidification.
doctoral thesis 2009
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Turchin, A.N. (author)
doctoral thesis 2008
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Martinez Pacheco, M. (author)
Self-Propagating High-Temperature Synthesis (SHS), also called combustion synthesis is an exothermic and self-sustained reaction between the constituents, which has assumed significance for the production of ceramics and ceramic-metallic materials (cermets), because it is a very rapid processing technique without the need of complex furnaces....
doctoral thesis 2007
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The presence of a heavily deformed surface layer (a few microns thick) on rolled aluminium alloy is understood to be one of the main reasons contributing to the Filiform Corrosion (FFC) susceptibility of the alloy. The surface layer is formed during the thermo-mechanical processing of the sheet metal, in the rolling mills. The surface layer...
doctoral thesis 2007
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Dijkstra, W.O. (author)
In the thesis two different models of solidification of aluminum alloys are presented and analyzed. The first 1--D solidification model is derived from the conservation of solute, heat and mass. With numerical experiments it is shown that simulations with the Finite Difference discretization must adhere a relation similar to the Courant...
doctoral thesis 2007
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Drini, B. (author)
Abstract not available
doctoral thesis 2006
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Zuidema, J. (author)
Modelling of Flow Phenomena during DC Casting Jan Zuidema The production of aluminium ingots, by semi-continuous casting, is a complex process. DC Casting stands for direct chill casting. During this process liquid aluminium transforms to solid aluminium while cooling down. This is not an instantaneous transformation, but occurs in temperature...
doctoral thesis 2005
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Iqbal, N. (author)
Aluminum, the most common metallic element in the earth's crust, offers structural materials with high strength and light weight. It is widely used throughout the world economy, particularly in the transportation, packaging, and construction industries. Once extracted from ore, solidification is the most important phase transformation in the...
doctoral thesis 2005
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doctoral thesis 2005
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Fratila-Apachitei, E.L. (author)
doctoral thesis 2004
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Bilovol, V.V. (author)
Powder injection moulding (PIM) is a versatile technology capable of producing complex and near net shape parts. Significant help in optimisation of the PIM process can be obtained from the numerical simulation. To obtain realistic numerical results it is necessary to fulfil certain conditions. The material properties should be correctly...
doctoral thesis 2003
Searched for: contributor:"Katgerman, L. (promotor)"
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