Results 41 to 50 of about 163,069 (305)

The effects of geometrical buoy shape with nonlinear Froude-Krylov force on a heaving buoy point absorber

International Journal of Naval Architecture and Ocean Engineering, 2021
This study examined the effects of buoy shape and Nonlinear Froude-Krylov force (NFK) on a heaving-buoy-type Wave Energy Converter (WEC). Based on the Maclaurin expansion, the theoretical solutions of the NFK were derived for three different buoy shapes;
Sung-Jae Kim, Weoncheol Koo, Moo-Hyun Kim   +2 more
doaj   +1 more source

Shallow water effects on wave energy converters with hydraulic power take-off system

The International Journal of Ocean and Climate Systems, 2016
The effect of water depth on the power absorption by a single heaving point absorber wave energy converter, attached to a hydraulic power take-off system, is simulated and analysed. The wave energy flux for changing water depths is presented and the study is carried out at a location in the north-west Portuguese coast, favourable for wave power ...
Ashank Sinha, D Karmakar, C Guedes Soares   +2 more
openaire   +1 more source

Analysis of the potential of a wave energy conversion system for Maltese waters [PDF]

, 2013
This paper presents the analysis of waves in the Maltese waters. Through data analysis the results will highlight the most common waves together with others which yield the largest power. The paper also presents a novel type of wave energy converter with
Azzopardi, J., Drago, Aldo, Gauci, A., Mule Stagno, Luciano, Sant, Tonio, Spiteri Staines, Cyril, Sustainable Energy 2013 : the ISE Annual Conference, Xuereb, Annalise   +7 more
core  

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

Advanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar, Dhanadeep Dutta, G. Bharat Reddy   +2 more
wiley   +1 more source

Dynamic performance of a point absorber WEC considering nonlinear hardening spring under irregular waves

International Marine Energy Journal, 2023
Wave energy is a kind of clean renewable energy that is huge and still need further research. Point absorber wave energy converter (PA-WEC) is widely utilized for offshore power devices.
Zongyu Chang, Zhenhua Hou, Zhongqiang Zheng   +2 more
doaj   +1 more source

Assembled PTO based on an array of double-acting hydraulic cylinders for WECs: From Conceptual Design to an Adjusted Detailed Model [PDF]

, 2015
All Wave Energy Converters (WECs) based on wave activated bodies comprises a Power Take- Off (PTO) system among other subsystems like the reaction mechanism, the supervisor of the system and the electrical generator. One of the most applied PTO systems
Antolín-Urbaneja, Juan Carlos, Cabanes, Itziar, Cortes, A., Estensoro, Patxi, Lasa, Joseba, Marcos, Marga   +5 more
core   +1 more source

Reduction of Oxide Inclusions During the High‐Frequency Welding of Steel via a Nonthermal Ar/H2 Plasma Jet

Advanced Engineering Materials, EarlyView.
High‐frequency (HF) welding of steel is limited by oxide inclusions that degrade weld quality. This study demonstrates, for the first time, the integration of a nonthermal Ar/H2 dielectric barrier discharge (DBD) plasma jet into HF welding. Local plasma treatment provides effective shielding and in‐situ oxide reduction, resulting in markedly fewer and ...
Viktor Udachin, Lienhard Wegewitz, René Gustus, Henning Wiche, Wolfgang Maus‐Friedrichs   +4 more
wiley   +1 more source

Tractor Test 2172: John Deere 8400R e23 [PDF]

, 2017
ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications ...
Nebraska Tractor Test Lab,
core   +1 more source

On‐Demand Activation of Thin Alginate Shell Encapsulated Volatile Liquid for Untethered Pneumatic Soft Actuation

Advanced Engineering Materials, EarlyView.
Phase‐changing liquids enable untethered pneumatic actuation in soft robotics but suffer from volatility and storage challenges. This work reports a simple method to encapsulate Novec 7000 within micron‐thin alginate shells via in situ injection and ionic crosslinking.
Rayan A. M. Basodan, Jack Keddie, Byoungyoul Park, Hyun‐Joong Chung   +3 more
wiley   +1 more source

Optimizing the hydraulic power take-off system in a wave energy converter

Ocean Engineering
This study aims to determine the optimal pressure for the accumulator tank in a wave energy converter (WEC) with hydraulic power take-off (PTO) to maximize energy generation. A simulation-based approach was employed to analyze the buoy's performance with wave data generated from the Wafo toolbox using the generalized Pierson–Moskowitz (GPM) spectrum ...
Shokoufa Zeinali, Magnus Wiktorsson, Jan Forsberg, Georg Lindgren, Johan Lindström   +4 more
openaire   +2 more sources