Results 21 to 30 of about 143,374 (309)

Combined Process‐ and Phase‐Field‐Simulation to Predict the Microstructure of Single‐Crystal Ni‐Based Superalloys

Advanced Engineering Materials, EarlyView.
A combined finite element and phase‐field approach predicts the evolution of microstructure during the directional solidification of Ni‐based superalloys. The model reveals how withdrawal rate, temperature gradient, and wall thickness control the dendrite spacing, highlighting the strong effect of surface regions in thin sections where dendrite growth ...
Sean Böhm, André B. Baldissera, Rainer Völkl, Uwe Glatzel   +3 more
wiley   +1 more source

Design, Fabrication, and Commissioning of Transonic Linear Cascade for Micro-Shock Wave Analysis

Journal of Manufacturing and Materials Processing
Understanding shock wave behavior in supersonic flow environments is critical for optimizing the aerodynamic performance of turbomachinery components. This study introduces a novel transonic linear cascade design, focusing on advanced blade manufacturing
Mihnea Gall, Valeriu Drăgan, Oana Dumitrescu, Emilia Georgiana Prisăcariu, Mihaela Raluca Condruz, Alexandru Paraschiv, Valentin Petrescu, Mihai Vlăduț   +7 more
doaj   +1 more source

Seal Related Development Activities at EG/G [PDF]

, 1991
Seal related development activities including modeling, analysis, and performance testing are described for several current seal related projects.
Greiner, Harold F.
core   +1 more source

The comparison of various gas turbine inlet aircooling methods for various ambient condition trough energy and exergy analysis [PDF]

, 2012
The strong influence of climate conditions on gas turbine behavior is well known. During the summer season the output of gas turbines falls to a value that is less than the rated output under high temperature conditions. Cooling the turbine inlet air can
Kaviri, A. Ganjeh, Kaviri, H. Ganjeh, Mat Lazim, Tholudin, Mohd. Jaafar, Mohammad Nazri   +3 more
core   +1 more source

Low‐Angle Grain Boundaries and Re‐Segregation in Single‐Crystalline Ni‐Base Superalloys

Advanced Engineering Materials, EarlyView.
This work demonstrates that Re‐segregation at low‐angle grain boundaries (LAGBs) in Ni‐base superalloys is influenced by misorientation angle. Advanced microscopy and atom probe tomography reveal that higher misorientation angles increases Re‐segregation.
Alireza B. Parsa, Aparna Saksena, Alesander Kostka, Pascal Thome, Felicitas Scholz, Alexandre Mussi, Christoph Somsen, Baptiste Gault, Jan Frenzel, Gunther Eggeler   +9 more
wiley   +1 more source

An Analytical Study on the Performance and Feasibility of Converting a Combined Gas or Gas Propulsion System to a Combined Gas Turbine–Electric and Steam System for a Type 22 Frigate

Journal of Marine Science and Engineering
A Type 22 Broadsword class of frigate uses a combined gas or gas (COGOG) propulsion system that utilizes four different gas turbines, depending on the mode of operation.
Calin Profir, Theodor Mihnea Sirbu, Razvan Edmond Nicoara, Alexandru Hank, Bogdan Catalin Navligu, Cosmin Petru Suciu, Jeni Alina Vilag, Dan Glasberg   +7 more
doaj   +1 more source

Exploring and contextualizing public opposition to renewable electricity in the United States [PDF]

, 2009
This article explores public opposition to renewable power technologies in the United States. It begins by discussing the genesis of environmental ethics, or how some Americans have come to place importance on the protection of the environment and ...
Allen, Anders, Awerbuch, Barbour, Barclay, Bauen, Benjamin Sovacool, Berinstein, Bishnu, Boone, Carson, Coburn, Devine-Wright, Devine-Wright, Diesendorf, Duffield, Elton, Fielding, Flavin, Gagnon, Green, Kagel, Kahn, Kaplan, Karmis, Keating, Lee, Leopold, Mahapatra, Mohai, Nash, Norland, Ottaviano, Pasqualetti, Pasqualetti, Pater, Podlas, Roth, Sovacool, Sovacool, Sundqvist, Swartz, Thoreau, Upham, Upham   +44 more
core   +2 more sources

Productivity‐Driven Optimization of Laser Powder Bed Fusion Parameters for IN718 Superalloy: Process Control, Microstructure, and Mechanical Properties

Advanced Engineering Materials, EarlyView.
This study demonstrates how optimizing laser power, scanning speed, and hatching distance in laser powder bed fusion can boost the productivity of Inconel 718 manufacturing by up to 29% while maintaining mechanical integrity. The work delivers a validated process window and cost–time analysis, offering industry‐ready guidelines for efficient additive ...
Amir Behjat, Guido Barale, John Stavridis, Ehsan Norouzi, Jin‐Yoo Suh, Dong‐Ik Kim, Luca Iuliano, Abdollah Saboori   +7 more
wiley   +1 more source

Additively Manufactured Dragonfly-Inspired Wings for Bio-Faithful Flapping MAV Development

Biomimetics
This work presents a first-iteration bio-faithful dragonfly-inspired wing designed for future flapping micro air vehicle (MAV) applications. Using high-resolution imaging, the natural venation pattern of fore- and hindwings was reconstructed in CAD and ...
Emilia Georgiana Prisăcariu, Oana Dumitrescu, Sergiu Strătilă, Mihail Sima, Claudia Săvescu, Iulian Vlăducă, Cleopatra Cuciumita   +6 more
doaj   +1 more source

Pyramidal Structures on Yttria‐Stabilized Zirconia after High Temperature Exposure at 1500°C: New Features on an Old Material

Advanced Engineering Materials, EarlyView.
New features on yttria‐stabilized zirconia after exposure at 1500°C: Newly discovered pyramidal structures on an old material. After exposure at 1550°C on the cross section of YSZ new features, namely pyramidal structures are discovered. These structures grow with time, increase in numbers, appear as singularities, are often arranged in strings, and ...
Doris Sebold, Dylan Jennings, Robert Vaßen   +2 more
wiley   +1 more source