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Now showing items 1-15 of 15

  • Addressing failure rate uncertainties of marine energy converters 

    Thies, Philipp R.; Smith, George H.; Johanning, Lars (Elsevier, 2012)
    The interest in marine renewable energy is strong, but has not led to significant commercial-scale investment and deployment, yet. To attract investors and promote the development of a marine renewable industry a clear ...
  • Assessing loading regimes and failure modes of marine power cables in marine energy applications 

    Thies, Philipp R.; Johanning, Lars; Smith, George H. (2011)
    Highly reliable marine power cables are imperative for the cost-effective operation of marine energy conversion systems. Cable manufacturers and installers have considerable experience with marine power cables when deployed ...
  • Assessing mechanical loading regimes and fatigue life of marine power cables in marine energy applications 

    Thies, Philipp R.; Johanning, Lars; Smith, GH (Sage, 2012)
    Reliable marine power cables are imperative for the cost-effective operation of marine energy conversion systems. There is considerable experience with marine power cables under static and dynamic load conditions but the ...
  • Component reliability testing for wave energy converters: Rationale and implementation 

    Thies, Philipp R.; Johanning, Lars; Gordelier, T (European Wave and Tidal Energy Conference, 2013)
    The reliability of marine renewable energy (MRE) converters is a key issue that has to be addressed and included in a whole system approach, in order to make the energy extraction from these sources a viable option. At the ...
  • Component test facilities for marine renewable energy converters 

    Johanning, Lars; Thies, Philipp R.; Smith, George H. (Royal Institution of Naval Architechts, 2010-04-21)
    This paper describes how the PRIMaRE group at University Exeter is engaging in the establishment of appropriate reliability methods suitable for application to marine renewable devices with a key area being the production ...
  • Development of a marine component testing facility for marine energy converters 

    Thies, Philipp R.; Johanning, Lars (2010)
    High reliability and availability of marine energy devices are key for successful and viable commercial-scale projects. This paper briefly reviews applicability and uncertainties of available component failure rate data ...
  • Durability of synthetic mooring lines for ocean energy devices 

    Weller, S.D.; Davies, P.; Thies, Philipp R.; Harnois, Violette; Johanning, Lars (ICOE, 2012-10)
    The mooring systems of Marine Energy Converters (including wave energy, tidal energy and offshore floating wind systems) are critical elements and a thorough understanding of their long term durability is essential to ...
  • Lifecycle fatigue load spectrum estimation for mooring lines of a floating marine energy converter 

    Thies, Philipp R.; Johanning, Lars; Smith, George H. (ASME, 2012)
    One of the key engineering challenges for the installation of floating marine energy converters is the fatigue of the load-bearing components. In particular the moorings which warrant the station-keeping of such devices ...
  • Mooring line fatigue damage evaluation for floating marine energy converters: Field measurements and prediction 

    Johanning, Lars; Harnois, Violette; Smith, Helen C.M.; Parish, David; Thies, Philipp R. (Elsevier, 2013-09-30)
    The vision of large-scale commercial arrays of floating marine energy converters (MECs) necessitates the robust, yet cost-effective engineering of devices. Given the continuous environmental loading, fatigue has been iden- ...
  • A novel mooring tether for peak load mitigation: Initial performance and service simulation testing 

    Thies, Philipp R.; Johanning, Lars; McEvoy, Paul (Elsevier, 2014)
    One of the main engineering challenges for floating marine renewable energy devices is the design of reliable, yet cost-effective mooring solutions for the harsh and dynamic marine environment. The mooring system must be ...
  • Offshore reliability approach for floating renewable energy devices 

    Johanning, Lars; Thies, Philipp R.; Parish, David; Smith, George H. (ASME, 2011)
    The viability and success of Marine Renewable Energy installations is strongly dependent on the reliability of devices as this determines the amount of generated electricity and the cost for operation and maintenance. ...
  • Physical component testing to simulate dynamic marine load conditions 

    Thies, Philipp R.; Johanning, Lars; Gordelier, Tessa; Vickers, Andrew; Weller, S.D. (ASME, 2013)
    One of the key engineering challenges for the installation of floating marine energy converters is the fatigue of the load-bearing components. In particular the moorings which warrant the station-keeping of such devices ...
  • Flowbec 

    Ashton, Ian; Johanning, Lars; Smith, GH; Harnois, Violette; Van Nieuwkoop, J; Smith, Helen C.M. (University of Exeter, 2012-08)
    This document provides an overview of the resources available for the description of the natural environment at the Wave Hub site, and surrounding region. It aims to provide the reader with an understanding of the ...
  • Towards component reliability testing for marine energy converters 

    Thies, Philipp R.; Johanning, Lars; Smith, GH (Elsevier, 2011)
    The dearth of generally available, failure data that can be directly applied to marine energy converters (MECs) has been commented on for some years. The advancement of the industry will be fundamentally linked to proven ...
  • Towards component reliability testing for marine energy converters 

    Thies, Philipp R.; Johanning, Lars; Smith, George H. (Elsevier, 2011)
    The dearth of generally available, failure data that can be directly applied to marine energy converters (MECs) has been commented on for some years. The advancement of the industry will be fundamentally linked to proven ...