Blar i Institutt for marin teknikk på tittel
Viser treff 2650-2669 av 3421
-
Reliability analysis of wake-induced collision of flexible risers
(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
(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 and Maintenance Analysis of Marine Hybrid Power and Propulsion Systems
(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 assessment of a bridge structure subjected to chloride attack
(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 Centered Maintenance (RCM) of the Autonomous Passenger Ferry in Trondheim
(Master thesis, 2018)This thesis make use of the RCM method to construct a maintenance program for an autonomous passenger ferry. The autonomous passenger ferry will work as a shuttle ferry in Trondheim, between Ravnkloa and Vestre Kanalkai. ... -
Reliability centered maintenance on the Norwegian continental shelf
(Master thesis, 2014)The main objective of this thesis is to unveil the challenges of RCM as an analysis method for assets on the Norwegian continental shelf. A mixed research method have been used, also known as a semi-quantitative method, ... -
Reliability-based Assessment of Deteriorating Ship-shaped Offshore Structures
(Doktoravhandlinger ved NTNU, 1503-8181; 2009.158, Doctoral thesis, 2009)Floating production, storage and offloading ships, referred to as FPSOs, are hybrid structures in the sense that these vessels are ships being operated as offshore facilities. Production ships or FPSOs constitute an efficient ... -
Reliability-based assessment of marine operations with emphasis on sea transport on barges
(Doctoral theses at NTNU;2020:383, Doctoral thesis, 2020)This thesis addresses the structural reliability assessment of marine operations related to the transport of large and heavy objects. The base case has been sea transportation by means of a towed barge with an emphasis on ... -
Reliability-based Gear Contact Fatigue Analysis for Wind Turbines under Stochastic Dynamic Conditions
(Chapter, 2013)This paper describes a method to perform reliability-based gear contact fatigue analysis for wind turbines considering the long-term stochastic wind conditions. A simplified predictive subsurface pitting model for estimating ... -
Reliability-based safety factor for metallic strip flexible pipe subjected to external pressure
(Journal article; Peer reviewed, 2018)Reliability-based safety factors for metallic strip flexible pipes(MSFP) subjected to external pressure are calibrated in this paper. The partial safety factors of such pipes are obtained by introducing a target reliability ... -
Reliability-Centered Maintenance for a Merlin WR200 WROV
(Master thesis, 2018)IKM Subsea AS is an independent Remotely Operated Vehicle (ROV) company that owns and operates 20 Merlin WR200 ROV systems. In order to stay competitive on the ROV operation market IKM Subsea are seeking to reduce their ... -
Reliability-Centered Maintenance Methodology: Case Study and Improvements
(Master thesis, 2013)CONCLUSIONThe RCM is learned by applying to specific system and during the work several difficulties are discovered. As a solution to these problems there are suggested to use methods such as Concurrent Design and project ... -
Reliability-Centred Maintenance of Hydrogen-Fueled Coastal Fishing Vessel
(Master thesis, 2023)Denne masteroppgaven studerer RCM metoden til å konstruere ett vedlikeholdsprogram for en kystfiskesjark som bruker hydrogen som drivstoff. Sjarken vil være et null-utslippsfartøy som bruker brenselceller til fremdrift ved ... -
Remaining useful life predictions for turbofan engine degradation using semi-supervised deep architecture
(Journal article; Peer reviewed, 2018)In recent years, research has proposed several deep learning (DL) approaches to providing reliable remaining useful life (RUL) predictions in Prognostics and Health Management (PHM) applications. Although supervised DL ... -
Remote Control and Automatic Path-following for C/S Enterprise I and ROV Neptunus.
(Master thesis, 2015)Remote control and monitoring of marine operations is in many cases desirable, due to distance, harsh environment, and dangers related to human life, and safety. Marine control systems in interaction with remote control ... -
Remote Operation of Marine Robotic Systems and Next-Generation Multi-Purpose Control Rooms
(Peer reviewed; Journal article, 2023)Since 2017, NTNU’s Applied Underwater Robotics Laboratory has been developing an infrastructure for remote marine/subsea operations in Trondheim Fjord. The infrastructure, named the OceanLab subsea node, allows remote ... -
Remote Sensing of the Tautra Ridge: An Overview of the World’s Shallowest Cold-Water Coral Reefs
(Peer reviewed; Journal article, 2022)On the Tautra Ridge – a 39-100 m deep morainic sill located in the middle of the Trondheimsfjord, Norway – some of the world’s shallowest known occurrences of the scleractinian cold-water coral (CWC) Desmophyllum pertusum ... -
Renewable CO2 recycling and synthetic fuel production in a marine environment
(Peer reviewed; Journal article, 2019)Humankind must cease CO2 emissions from fossil fuel burning if dangerous climate change is to be avoided. However, liquid carbon-based energy carriers are often without practical alternatives for vital mobility applications. ... -
Reproduction of Monopile Ringing Events in Reduced-Duration Model Tests
(Chapter; Peer reviewed, 2017)Monopile support structures for offshore wind turbines may experience ringing-type responses in steep wave conditions. In order to experimentally capture the statistical distribution of the hydrodynamic loads and structural ... -
Requirements and concepts for arctic evacuation
(Master thesis, 2011)Operation of manned oil and gas installations in arctic locations is complicated and presents new challenges. One of the challenges is to maintain the safety of the crew, by obtaining adequate lifeboat systems for crew ...