Blar i Fakultet for ingeniørvitenskap (IV) på tittel

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    • Reliability Analysis of Crack Growth Occurrence for a Secondary Hull Component due to Vibration Excitation 

      Kleivane, Siri Kolle; Leira, Bernt Johan; Steen, Sverre (Peer reviewed; Journal article, 2024)
      Ship hull vibration is a significant contributor to fatigue crack growth and the major sources of vibrations are found to be the main engine vibration excitation, the wave-induced springing and whipping loads, and the ...

    • Reliability Analysis of Crack Growth Occurrence for a Secondary Structural Component due to Vibration Excitation 

      Kleivane, Siri Kolle; Leira, Bernt Johan; Steen, Sverre (Chapter, 2023)
      Ship hull vibration is a significant contributor to fatigue crack growth and the major sources of vibrations are found to be the main engine vibration excitation, the wave-induced springing and whipping loads, and the ...

    • Reliability Analysis of Monopile Foundations for Offshore Wind Turbines 

      Depina, Ivan (Doctoral thesis at NTNU;2016:171, Doctoral thesis, 2016)
      Initiated by the increasing energy demands and instabilities in oil and gas prices there is an ongoing transition from the conventional to the renewable energy sources across Europe. The goal is to satisfy 20% of the energy ...

    • Reliability Analysis of Reinforced Concrete using Non-Linear Finite Element Analysis 

      Henriksen, Erlend Knudsen; Bjerva, Mats Gruber Bech; Lindgren, Guro; Afzal, Noman (Master thesis, 2016)
      The purpose of the thesis is to investigate methods that may be used for assessing the reliability in large concrete structures in combination with non-linear nite element analyses (NLFEA). Reliability methods are applied ...

    • Reliability Analysis of Shore-to-Ship Fast Charging Systems 

      Karimi, Siamak; Zadeh, Mehdi; Suul, Jon Are Wold; Thieme, Christoph Alexander (Chapter, 2021)
      This paper presents a reliability assessment of Shore-to-Ship Sharging (S2SC) systems with focus on the two most common topologies of ac and dc charging. In the proposed reliability model, the Markov chain and reliability ...

    • Reliability analysis of wake-induced collision of flexible risers 

      Fu, Ping; Leira, Bernt Johan; Myrhaug, Dag (Journal article; Peer reviewed, 2017)
      Collision between risers is an important design and operational concern, especially in deep water since the probability of collision tends to increase as the riser length increases. Riser collision is due to the joint ...

    • Reliability Analysis of Wake-induced Riser Collision 

      Fu, Ping (Doctoral theses at NTNU;2019:91, Doctoral thesis, 2019)
      Reliability-based design of a riser array requires accurate estimation of extremes of the stochastic relative motion process between pairs of risers in order to avoid collision. Hydrodynamic interference is considered to ...

    • Reliability Analysis of Wireless Safety-Instrumented Systems 

      Sobhani, Soheil (Master thesis, 2015)
      Progressive development of wireless technology in recent years has enabled it to span its application to a wide verity of systems. Simple house hold monitoring and monitoring of a patient in a hospital gives two diverse ...

    • Reliability Analysis Using Finite Elements for Geotechnical Slope Stability Evaluations 

      Bæverfjord, Maj Gøril (Doctoral thesis at NTNU;2015:318, Doctoral thesis, 2015)
      This thesis contributes to the application of reliability analysis in geotechnical slope stability analysis, particularly for clay slopes. Case studies demonstrate the applicability of the presented theoretical framework ...

    • Reliability analysis with Metamodel Line Sampling 

      Depina, Ivan; Le, Thi Minh Hue; Fenton, Gordon A.; Eiksund, Gudmund Reidar (Journal article; Peer reviewed, 2016)
      This paper presents an approach for reliability analysis of engineering structures, referred to as Metamodel Line Sampling (MLS). The approach utilizes a metamodel of the performance function, within the framework of the ...

    • Reliability and barrier assessment of series–parallel systems subject to cascading failures 

      Xie, Lin; Lundteigen, Mary Ann; Liu, Yiliu (Peer reviewed; Journal article, 2020)
      Cascading failures can occur in many technical systems where the components are organized as in series–parallel structures. The failures in these systems may propagate from one component to the other, not only within the ...

    • Reliability and Maintenance Analysis of Marine Hybrid Power and Propulsion Systems 

      Wang, Ziwen (Master thesis, 2023)
      This thesis aims to provide a reliability and maintenance analysis of marine hybrid power systems and figure out the effect of vessel operation contexts and system redundancies. The Multi-phase Markov method is implemented ...

    • Reliability and Safety Assessment of All-Electric Subsea Concepts 

      Johannessen, Gunnar (Master thesis, 2019)
      Olje- og gassindustrien ønsker å erstatte eksisterende elektrohydrauliske styringssystemer med hel-elektriske løsninger for kontroll av undervannsventiler. Hel-elektrisk teknologi har stort potensial for utnyttelse av ...

    • Reliability and safety assessment of Asubsea rov-based sensor retrieval tool 

      Iluore, COLLINS (Master thesis, 2011)
      The ROV –based subsea sensor retrieval system is a new technology designed by RoxarFlow Measurement As, for the installation and retrieval of subsea sensors mounted on subsea production equipment (such as Christmas trees ...

    • Reliability assessment for final elements of SISs with time dependent failures 

      Wu, Shengnan; Zhang, Laibin; Lundteigen, Mary Ann; Liu, Yiliu; Zheng, Wenpei (Journal article, 2018)
      Reliability assessment for safety-instrumented systems (SISs) plays a vital role in improving the design of SISs. Traditional methods for SIS reliability assessment that assume constant failure rates are, however, not ...

    • Reliability assessment for subsea HIPPS valves with partial stroke testing 

      Wu, Shengnan; Zhang, Laibin; Liu, S; Liu, Yiliu; Barros, Anne Cecile Pénélope; Lundteigen, Mary Ann (Chapter, 2017)
      High integrity pressure protection systems (HIPPS) have been applied in subsea applications to prevent accidents due to over-pressurization. A subsea HIPPS can be regarded as a complete functional loop consisting of sensors, ...

    • Reliability assessment of a bridge structure subjected to chloride attack 

      Leira, Bernt Johan; Thons, Sebastian; Faber, Michael H (Journal article; Peer reviewed, 2018)
      Prediction of the service lifetime of concrete structures with respect to chloride ingress involves a number of parameters that are associated with large uncertainties. Hence, full-scale measurements are strongly in demand. ...

    • RELIABILITY ASSESSMENT OF A SUBSEA HIPPS 

      Stølen, Ellen Margrete (Master thesis, 2014)
      Safety instrumented systems are vital in the oil and gas industry. A SIS consists of input elements, a logic solver and final elements. A High Integrity Pressure Protection System is an example of such a system. HIPPS is ...

    • Reliability Assessment of Long Span Suspension Bridges Subjected to Dead Loads 

      Antonsen, Kristin (Master thesis, 2016)
      In the present study the influence of standardized safety factors in large and heavy structures, where the major loading arises from self-weight of the structure itself, is considered. For this purpose, a reliability ...

    • Reliability assessment of safety instrumented systems operating in high demand mode 

      Jin, Hui (Master thesis, 2010)
      Safety instrumented systems (SISs) play an important role in protecting human life, the environment, and material and financial assets. In order to achieve the expected protection function, high reliability of such systems ...