Results 91 to 100 of about 33,394 (283)

From Shear to Sound: Mechanics–Acoustics Mapping of TPMS Lattices

open access: yesAdvanced Engineering Materials, EarlyView.
Triply periodic minimal surface (TPMS) lattices are mapped across mechanical and acoustic performance, revealing that descriptors validated in compression fail under shear. First‐time comparison with trusses included. A transition from porous to resonance‐driven absorption emerges at 25% density.
Lucía Doyle   +3 more
wiley   +1 more source

Estimation of Added Resistance in Waves in a Ballasted Condition

open access: yesJournal of the Japan Society of Naval Architects and Ocean Engineers, 2010
As for bulk carriers and tankers it is important to calculate added resistance in waves in a ballasted condition with accuracy,because they are operated in ballasted conditions for half of their operation time. However, it is difficult to estimate the resistance with accuracy by the numerical calculation since wave making phenomena in a ballasted ...
Ichinose, Yasuo   +4 more
openaire   +2 more sources

Designing Polymer Nanocomposites for X‐Ray Shielding: Mechanisms, Architectures, and Scalable Processing

open access: yesAdvanced Engineering Materials, EarlyView.
This review highlights advances in lightweight, lead‐free polymer nanocomposites for diagnostic X‐ray shielding. By linking filler chemistry, dispersion, architecture, and photon interaction mechanisms, it establishes structure–performance relationships guiding material design.
Aklilu G. Messele   +2 more
wiley   +1 more source

A Boundary Element Method for Motions and Added Resistance of Ships in Waves

open access: yes, 2014
The accurate prediction of ship’s resistance in waves is nowadays of increased importance, since it greatly influences the ship’s performance regarding sustainable service speed and fuel consumption in seaways.
BEGOVIC E.   +4 more
core  

Precipitation Simulations of the O‐Phase in Ti2AlNb Alloys Processed by Laser Powder Bed Fusion

open access: yesAdvanced Engineering Materials, EarlyView.
Simulated and experimental evolution of the O‐phase volume fraction during postprocessing of a Ti‐21Al‐25Nb (at.%) alloy processed by laser powder bed fusion. With results of sensitivity to input parameters from a thorough and quantified analysis, the interfacial energy matrix/precipitate is the most relevant input parameter for the simulation of the O‐
Silvana Tumminello   +7 more
wiley   +1 more source

Comparative study of prediction methods of power increase and propulsive performances in regular head short waves of KVLCC2 using CFD

open access: yesInternational Journal of Naval Architecture and Ocean Engineering, 2019
This paper employs computational tools to predict power increase (or speed loss) and propulsion performances in waves of KVLCC2. Two-phase unsteady Reynolds averaged Navier-Stokes equations have been solved using finite volume method; and a realizable k ...
Cheol-Min Lee   +4 more
doaj   +1 more source

A Dislocation Perspective on Strength and Toughness in Ceramics

open access: yesAdvanced Engineering Materials, EarlyView.
Dislocations in ceramics enjoy a long but yet under‐appreciated history. The three research waves for dislocations in ceramics highlight the topic evolution over the last 90 years. This review focuses on the impact of dislocation on strength and toughness in ceramics.
Xufei Fang
wiley   +1 more source

Research on Hydrodynamic Characteristics and Drag Reduction Optimization of Drillships with Moonpools

open access: yesJournal of Marine Science and Engineering
This paper analyzes the influence of moonpools on the hydrodynamic performance of drillships using the Reynolds-averaged Navier–Stokes (RANS) method.
Junming Hu   +5 more
doaj   +1 more source

Further development of ship added resistances in head waves [PDF]

open access: yes, 2009
This paper presents the result of analysis of ship added resistances in head waves for 100 m product tanker model no 7698 by using experiment techniques and also theoritical predictions.
Mustaffa Kamal, Iwan Zamil
core  

Development of a numerical model for the evaluation of the ship added resistance in waves

open access: yes, 2021
Procjena dodatnog otpora broda na valovima od velike je važnosti s ekološkog i ekonomskog aspekta. Dodatni otpor uzrokuje pad brzine plovidbe te utječe na povećanje zahtijevane snage i potrošnje goriva broda, a samim time i emisije štetnih plinova ...
Martić, Ivana
core  

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