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- Conference Paper:
Garcia-Teruel et al.
… Wave Energy Converter structures are associated with the highest percentage share of LCOE costs, however, existing geometry optimization studies just consider maximization of power production and, in some cases, mass as a proxy for structural costs. How to include cost … discussed here. Two different methodologies - depending on the available information and goal of the study - are presented, and example cases for these are given. The results show the …
- Conference Paper:
Robert et al.
… Tidal turbine arrays have considerable potential in providing a reliable source of renewable energy. Technology limitations are obstructing the fast development of the sector, however, one of which is the lack of knowledge of mechanical properties of submerged composites used to build …
- Journal Article:
Alam et al.
… The aging of polymer-composites is a ubiquitous problem that leads to the degradation of mechanical properties, reducing the service life of an engineered structure, and potentialising premature, catastrophic modes of failure. …
- Journal Article:
Hassan et al.
… Erosion of tidal turbine blades in the marine environment is a major material challenge due to the high … can exhibit leading-blade edge erosion due to marine flows containing salt and solid particles of sand. Anti-erosion coatings can be used for more ductility at the blade surface, but the discontinuity between the coating and the stiffer composite can be a site of failure. Therefore, it is desirable to have a polymer matrix with a gradient of toughness, …
- Conference Paper:
Dooher et al.
… A great deal of energy can potentially be generated using underwater tidal current turbines. These operate in … is roughly 800 times denser than air can harvest more energy. Moreover, one major advantage of tidal current energy over other forms of renewable energy is that underwater currents and tides are predictable and the energy …
- Journal Article:
McGilton et al.
… The marine energy industry is in its early stages but has a large potential for growth. One of the most significant challenges is the reduction of operation and maintenance costs. Magnetic gears (MGs) offer the potential for long periods … frictionless torque transmission which could reduce these costs. This study presents a summary of the state of the art in MG technology and then investigates its potential for marine energy …
- Journal Article:
Grogan et al.
… The lifespan and economic viability of tidal energy devices are constrained, in part, by the complex degradation of the tidal turbine blade materials due to prolonged immersion in a hostile sub-sea environment. … degradation mechanism in composite materials. This work aims to investigate the influence of microstructure and hydrostatic pressure on water absorption in four polymer composites which …
- Journal Article:
Nambiar et al.
… options for marine energy converter (MEC) farms. On the technical front, the feasibility of the transmission options considering supply quality constraints and the optimal sizing of reactive power compensation to allow maximum real power transfer capability in the subsea transmission cable have been considered. The economic viability of different transmission options are measured based on component costs and the costs associated …
- Conference Paper:
Jaksic et al.
… high cost and reliability during its life expectancy. The blades make up a significant part of total tidal turbine cost. Hence, the capital cost reduction and the structural reliability of blades are the key factors in a tidal turbine development. This study examines the possibility of replacing Glass Fibre Reinforced Composites (GFRP) with Carbon Fibre Reinforced Composites …
- Journal Article:
Kennedy et al.
… large thrust and torsional loadings, relative to wind turbine blades, due to the high density of seawater, among other factors. The complex combination of these loadings, as well as water ingress and associated composite laminate saturation, have … scalability, energy production and cost-effectiveness. This study investigates the effect of seawater ingress on composite material properties, and the associated design and life …
- Journal Article:
Borg et al.
… Establishing a design and material evaluation of unique tidal turbine rotors in true hydrodynamic conditions by means of a numerical structural analysis has presented inadequacies in implementing spatial and … along the blade surfaces. This study puts forward a structural performance investigation of true-scale, ducted, high-solidity, fibre-composite tidal turbine rotor configurations in …
- Book Chapter:
Jaksic et al.
… The structural design of marine tidal turbine blades is governed by the hydrodynamic shape of the aerofoil, extreme loadings and composite material mechanical properties. The design of the aerofoil, chord and twist distribution along the blade is generated to optimise turbine …
- Journal Article:
Kennedy et al.
… This work presents an experimental study on the fatigue of glass fibre-reinforced polymers (GFRP) for use in ocean energy structures, with particular emphasis on the effects of water saturation. Quasi-isotropic specimens with either epoxy or vinyl-ester matrix were reinforced with E-glass or E-CR glass and immersion-aged for a period of up to two and a half years, using a moderately accelerated ageing technique. A number of the …
- Journal Article:
Noble et al.
… Marine renewable energy (MRE) is still an emerging technology. As such, there is still a lack of mature standards and guidance for the development and testing of these devices. The sector covers a wide range of disciplines, so there is a need for more comprehensive guidance to cover these. This paper …
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