Browsing Institutt for maskinteknikk og produksjon by Issue Date
Now showing items 21-40 of 3973
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Pressure and strain measurement during hot extrusion of aluminium
(Doktoravhandlinger ved NTNU, 1503-8181; 2005:50, Doctoral thesis, 2005)The aluminium extrusion process is based on simple principles, but allows profiles with the most complex cross-sectional shapes to be produced at a very high rate. One of the greatest challenges of aluminium extrusion is ... -
Safety Barriers on Oil and Gas Platforms. Means to Prevent Hydrocarbon Releases
(Doktoravhandlinger ved NTNU, 1503-8181; 2006:3, Doctoral thesis, 2006)The main objective of the PhD project has been to develop concepts and methods that can be used to define, illustrate, analyse, and improve safety barriers in the operational phase of offshore oil and gas production ... -
Fatigue assessment methods for welded structures and their application to an aluminium T-joint
(Doktoravhandlinger ved NTNU, 1503-8181; 2006:129, Doctoral thesis, 2006)Following a short introduction, the state-of-the-art fatigue life assessment methods based on the nominal stress, the structural hot spot stress and the effective notch stress, as well as the crack propagation analysis are ... -
Computational Fluid Dynamics in Fluvial Sedimentation Engineering
(Doktoravhandlinger ved NTNU, 1503-8181; 2006:205, Doctoral thesis, 2006)The present dissertation describes the improvement of a numerical model when predicting sedimentation and erosion processes in fluvial geomorphology. Various algorithms and parameters were implemented in a computational ... -
Performance Measurement, Estimating and Control of Offshore Modification Projects
(Doktoravhandlinger ved NTNU, 1503-8181; 2006:53, Doctoral thesis, 2006)The purpose of this dissertation is to describe and demonstrate the practical application of techniques of performance measurement to the control and execution of modification projects in the offshore oil industry. The ... -
The Corporate Platform – a Mean to Industrialise Design of Customised Products
(Doktoravhandlinger ved NTNU, 1503-8181; 2006:145, Doctoral thesis, 2006)In the last century there has been a vast increase in global competitiveness. The flow of products across borders is greater than ever before and the focus on price and performance increased. Companies feel this increased ... -
Well Safety. Risk Control in the Operational Phase of Offshore Wells
(Doktoravhandlinger ved NTNU, 1503-8181; 2006:47, Doctoral thesis, 2006)The main objective of this thesis has been the development of procedures and methods for risk assessment of oil and gas wells. The work is limited to the well operational phase. The procedures and methods provide status ... -
A Methodology for Production Development – The Body of Knowledge Approach
(Doktoravhandlinger ved NTNU, 1503-8181; 2005:07, Doctoral thesis, 2006)The development of production line and facilities is without doubt a crucial task for the discrete goods producing industry in order to gain the competitive edge and the attention of the customer. This trend started already ... -
Biological Phosphorus Removal in a Moving Bed Biofilm Reactor
(Doktoravhandlinger ved NTNU, 1503-8181; 2007:177, Doctoral thesis, 2007)Phosphorus (P) and nitrogen (N) removal from municipal wastewater is performed to prevent or reduce eutrophication in the receiving water. Both P and N can be removed physical/chemically as well as biologically. While ... -
Sustainable Fishing Fleet; a Systems Engineering Approach
(Doktoravhandlinger ved NTNU, 1503-8181; 2007:206, Doctoral thesis, 2007)Many fisheries have significant challenges related to sustainable development, such as overexploitation and overcapacity in the fishing fleet. Overcapacity leads to increased pressure on fish resources, reduced profitability, ... -
ICT-supported knowledge representation for Development of Routines in industry
(Doktoravhandlinger ved NTNU, 1503-8181; 2007:36, Doctoral thesis, 2007)The ability to develop operating routines through the support of information and communication technology (ICT) is being valued by the business community as a source of competitive advantage in the information economy; and ... -
Cationic Polyelectrolytes as Primary Coagulants for Municipal Wastewater Treatment
(Doktoravhandlinger ved NTNU, 1503-8181; 2007:16, Doctoral thesis, 2007)Chemical treatment is an established technique for wastewater purification used alone or as a pre-treatment before biological treatment. In spite of many advantages associated with it, the excessive sludge production makes ... -
Bioretention as a Sustainable Stormwater Management Option in Cold Climates
(Doktoravhandlinger ved NTNU, 1503-8181; 2007:45, Doctoral thesis, 2007)Two pilot size bioretention boxes were constructed for field investigations at the Risvollan Urban Hydrological Research Station in Trondheim. The seasonal pollutant retention, hydraulic lag times, and rainfall runoff ... -
A Framework for Continuous Design Reuse Management Supported by an Option-Based Reuse Approach
(Doktoravhandlinger ved NTNU, 1503-8181; 2007:139, Doctoral thesis, 2007)This PhD thesis aims to address the problem of missed design reuse opportunities across consecutive products in industry. The research specifically targets the perceived knowledge gap regarding conceptual tools for ... -
Modelling of Fatigue Crack Growth at Notches and Other Stress Raisers
(Doktoravhandlinger ved NTNU, 1503-8181; 2007:231, Doctoral thesis, 2007)This thesis consists of an introduction and eight papers [1–8]. Paper 1 presents simple and flexible methods to enhance the fatigue life of welded aluminium components. The key element of the methods is to change residual ... -
Biopolymer-based Nanocomposites: Processing and Properties
(Doktoravhandlinger ved NTNU, 1503-8181; 2007:57, Doctoral thesis, 2007)The aim of this study was to produce biopolymer-based nanocomposites using extrusion as an industrially adaptable manufacturing process, and to study how this production process influenced the structure and properties of ... -
Drinking Water Production by Coagulation and Membrane Filtration
(Doktoravhandlinger ved NTNU, 1503-8181; 2007:175, Doctoral thesis, 2007)Drinking water production with low-pressure hollow-fibre membranes is becoming increasingly more widespread as replacement for conventional separation technology. Upstream coagulation can mitigate fouling layer formation ... -
Characterization of Biopolymer Based Nanocomposites
(Doktoravhandlinger ved NTNU, 1503-8181; 2007:12, Doctoral thesis, 2007)The field of nanocomposites is gaining considerable attention due to its potential for providing new materials with extraordinary physical properties compared to traditional composite materials. In this thesis cellulose ... -
A Fatigue Assessment Methodology for Notched Components Containing Defects
(Doktoravhandlinger ved NTNU, 1503-8181; 2007:224, Doctoral thesis, 2007)A probabilistic fatigue assessment tool, P•FAT, directly applicable to the results from a standard finite element stress analysis has been developed. The fatigue assessment tool consist of two deterministic fatigue assessment ... -
Measurement and Supervision in Automated Production
(Doktoravhandlinger ved NTNU, 1503-8181; 2007:134, Doctoral thesis, 2007)This thesis consists of two main parts. Part I: A general introduction to data collection and storage. Experiments are conducted to store events with timestamps in two different production cells. The information is used ...