1–20 von 1,416 Ergebnissen
|

    Use of fuzzy risk assessment in FMEA of offshore engineering systems

    Yang, Zaili / Wang, Jin | Tema Archiv | 2015
    methods in risk analysis and decision making. The framework, together with the FER approach has been applied to model the safety of an offshore ...
    Schlagwörter: Offshore-Technik

    Applying the self-tuning fuzzy control with the image detection technique on the obstacle-avoidance for autonomous underwater vehicles

    Fang, Ming-Chung / Wang, Shun-Ming / Wu, Mu-Chen et al. | Tema Archiv | 2015
    This study suggests a simple searching technique for obstacle-avoidance of autonomous underwater vehicles (AUVs) in varying ocean ...

    Operability of non-ice class aged ships in the Arctic Ocean-part II: Accidental limit state approach

    Park, Dae-Kyeom / Kim, Do-Kyun / Seo, Jung-Kwan et al. | Tema Archiv | 2015
    Accidental limit state-based ship collision analysis was undertaken to identify the operability of aged non-ice class ships in the Arctic ...
    Schlagwörter: arktischer Ozean

    Parameter identification of marine risers using Kalman-like observers

    Torres, Lizeth / Verde, Cristina / Vazquez-Hernandez, Omar | Tema Archiv | 2015
    , Kalman-like observers are proposed so that they can deal with the nonlinear behavior that is exhibited in the restoring force of a riser and the ...
    Schlagwörter: Steigrohr (Meerestechnik)

    Analytical and experimental study of hydrodynamic and hydroacoustic effects of air injection flow rate in ventilated supercavitation

    Nouri, Nowrouz M. / Riahi, Mohammad / Valipour, Ali et al. | Tema Archiv | 2015
    higher speeds. However, sound generated by the supercavitation is very effective in recognition of the vehicle and reduction in its controlled ...

    Numerical investigation of a stepped planing hull in calm water

    Lotfi, Payam / Ashrafizaadeh, Mahmud / Kowsari Esfahan, Reza | Tema Archiv | 2015
    -empirical method at volumetric Froude number in the range of 2.41–7.12. Centerline wake profile and reattachment location are compared with those of ...

    Power-saving device for air bubble generation using a hydrofoil to reduce ship drag: Theory, experiments, and application to ships

    Kumagai, Ichiro / Takahashi, Yoshiaki / Murai, Yuichi | Tema Archiv | 2015
    theory, and, through experiments performed in a small towing tank, show the fundamental air entrainment and bubble generation processes for the ...

    Numerical investigation of a pair of self-propelled AUVs operating in tandem

    Rattanasiri, Pareecha / Wilson, Philip A. / Phillips, Alexander B. | Tema Archiv | 2015
    operating at a range of longitudinal offset and transverse separations. The results highlight that operation in close proximity to another self ...

    Investigation of the radial bearing force developed during actual ship operations. Part 1: Straight ahead sailing and turning maneuvers

    Ortolani, Fabrizio / Mauro, Salvatore / Dubbioso, Giulio | Tema Archiv | 2015
    well as for enhancing the prediction of the controllability and maneuvering qualities of oceangoing vessels. In this work the radial load ...

    Governing factors and locations of fatigue damage on mooring lines of floating structures

    Wu, Yongyan / Wang, Tao / Eide, Oeyvind et al. | Tema Archiv | 2015
    In most literature and offshore industry practices, mooring line fatigue analyses typically focus on local locations, such as mooring top ...

    Upheaval buckling solution for submarine pipelines by segmented ditching and hot water flushing

    Zhao, Tianfeng / Feng, Xianhong | Tema Archiv | 2015
    , which are scheduled before and after preheating. In this solution, some selected pipe segments along the route were curve-laid and preserved ...

    FE analysis controls subsea pipeline buckling

    Matheson, Ian / Clubb, Graeme | Tema Archiv | 2015
    high-pressure, high-temperature (HPHT) deepwater development. A number of proprietary and generic pipe-in-pipe systems have been developed and ...
    Schlagwörter: Offshore-Technik

    Theoretical and experimental analysis of a slack towline motion on tug-towed ship during turning

    Fitriadhy, A. / Yasukawa, H. / Maimun, A. | Tema Archiv | 2015
    by Fitriadhy and Yasukawa (2011a), a slack towline formula is derived, which is capable of defining a boundary limit of their turning ability ...

    Comparison study on AIS data of ship traffic behavior

    Xiao, Fangliang / Ligteringen, Han / van Gulijk, Coen et al. | Tema Archiv | 2015
    waterway in the Netherlands (the Port of Rotterdam) and a wide one in China (wide waterway of Yangtze River close to the Su-Tong Bridge). It is ...

    Disturbance rejection control solution for ship steering system with uncertain time delay

    Lei, Zhengling / Guo, Chen | Tema Archiv | 2015
    parameters and delay variations as well as unmodeled dynamics, are taken as “internal disturbances”, while ocean movements are taken as “external ...

    Uncertainty analysis for added resistance experiment of KVLCC2 ship

    Park, Dong-Min / Lee, Jaehoon / Kim, Yonghwan | Tema Archiv | 2015
    This study considered the uncertainty analysis in the measurement of the motion response and added resistance of waves in seafaring ...

    How automatic identification system (AIS) antenna setup affects AIS signal quality

    Last, Philipp / Hering-Bertram, Martin / Linsen, Lars | Tema Archiv | 2015
    The AIS is mostly used to exchange different vessel data between vessels and AIS base stations. For mariners AIS data have become a useful ...

    Investigation of optimum jack-up vessel chartering strategy for offshore wind farm O&M activities

    Dalgic, Yalcin / Lazakis, Iraklis / Turan, Osman et al. | Tema Archiv | 2015
    , available vessels in the market and the variety of benefits & drawbacks of different vessel chartering strategies have to be considered in the O&M ...

    Real-time risk of ship structures integrating structural health monitoring data: Application to multi-objective optimal ship routing

    Deco, Alberto / Frangopol, Dan M. | Tema Archiv | 2015
    short term statistics based on Rayleigh prior distribution and a simulation-based technique are proposed for Bayesian updating. Finally, optimal ...

    Rigid dynamic performance simulation of an offshore pipeline plough

    Wang, Liquan / Gong, Hanyang / Xing, Xiaodong et al. | Tema Archiv | 2015
    Offshore pipeline ploughs are used for laying pipelines in seabed trenches; these devices primarily consist of a plough body and skid and ...