Now showing items 21-40 of 2389

    • Fatigue assessment methods for welded structures and their application to an aluminium T-joint 

      Mann, Torsten (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 

      Rüther, Nils (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 

      Fouche, Deon Paul (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 ...
    • Well Safety. Risk Control in the Operational Phase of Offshore Wells 

      Corneliussen, Kjell (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 

      Schätz, Christof (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 ...
    • Safety Barriers on Oil and Gas Platforms. Means to Prevent Hydrocarbon Releases 

      Sklet, Snorre (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 ...
    • Modelling of Fatigue Crack Growth at Notches and Other Stress Raisers 

      Fjeldstad, Arne (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 ...
    • A Framework for Continuous Design Reuse Management Supported by an Option-Based Reuse Approach 

      Nilsson, Cristian (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 ...
    • Biopolymer-based Nanocomposites: Processing and Properties 

      Bondeson, Daniel (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 ...
    • Biological Phosphorus Removal in a Moving Bed Biofilm Reactor 

      Helness, Herman (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 ...
    • Cationic Polyelectrolytes as Primary Coagulants for Municipal Wastewater Treatment 

      Pilipenko, Polina (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 

      Muthanna, Tone Merete (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 ...
    • Probabilistic ductile fracture assessment of pipelines 

      Sandvik, Andreas (Doktoravhandlinger ved NTNU, 1503-8181; 2007:31, Doctoral thesis, 2007)
    • Drinking Water Production by Coagulation and Membrane Filtration 

      Machenbach, Ingo (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 ...
    • ICT-supported knowledge representation for Development of Routines in industry 

      Hjelmervik, Ove Rustung (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 ...
    • Sustainable Fishing Fleet; a Systems Engineering Approach 

      Utne, Ingrid Bouwer (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, ...
    • Measurement and Supervision in Automated Production 

      Dransfeld, Sebastian (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 ...
    • A Fatigue Assessment Methodology for Notched Components Containing Defects 

      Wormsen, Anders (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 ...
    • Characterization of Biopolymer Based Nanocomposites 

      Kvien, Ingvild (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 ...
    • On Optimization of Injection Molding Cooling 

      Rännar, Lars-Erik (Doktoravhandlinger ved NTNU, 1503-8181; 2008:113, Doctoral thesis, 2008)
      This thesis is devoted to analysis and optimization of the injection molding process with a focus on the mold. In the analysis, both process parameters and the design of the mold are taken in consideration. A procedure has ...