Results 91 to 100 of about 61,385 (293)

A Workflow to Accelerate Microstructure‐Sensitive Fatigue Life Predictions

Advanced Engineering Materials, EarlyView.
This study introduces a workflow to accelerate predictions of microstructure‐sensitive fatigue life. Results from frameworks with varying levels of simplification are benchmarked against published reference results. The analysis reveals a trade‐off between accuracy and model complexity, offering researchers a practical guide for selecting the optimal ...
Luca Loiodice, Krzysztof S. Stopka, Michael D. Sangid   +2 more
wiley   +1 more source

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

Generation of New Frequencies by Nonlinear Interaction between Different Vortex Shedding Frequencies in Span Wise Direction of a Stepped Circular Cylinder [PDF]

, 2007
It is known that the low-frequency fluctuation about 1/20 of vortex shedding frequency exists in the irreqularity of the vortex shedding from a two-dimensional circular cylinder.
羽二生, 博之, 宮越, 勝美, 呉, 平   +2 more
core  

Multimodal Data‐Driven Microstructure Characterization

Advanced Engineering Materials, EarlyView.
A self‐consistent autonomous workflow for EBSP‐based microstructure segmentation by integrating PCA, GMM clustering, and cNMF with information‐theoretic parameter selection, requiring no user input. An optimal ROI size related to characteristic grain size is identified.
Qi Zhang, Santiago Benito, Özge Özgün, Sebastian Weber, Markus Stricker   +4 more
wiley   +1 more source

A Vortex Sheet/Point Vortex Dynamical Model For Unsteady Separated Flows [PDF]

, 2016
This paper presents a hybrid vortex sheet/point vortex method for modeling unsteady separated flows. We use vortex sheets to capture the dynamics of the shear layers immediately behind a wing in motion.
Darakananda, Darwin, Eldredge, Jeff D., Jeff Eldredge, Colonius, Tim, Darwin Darakananda, Tim Colonius, Williams, David R., David R. Williams   +7 more
core   +1 more source

Efficient approach for generating vortex sources with arbitrary orbital angular momentum in acoustic experiments

New Journal of Physics
In theoretical research framework of acoustics or optics, how to provide stable and efficient experimental vortex sources with arbitrary orbital angular momentum (OAM) (especially with larger OAM) is a highly challenging research topic.
Zhanlei Hao, Songsong Li, Yadong Xu, Shan Zhu, Huanyang Chen   +4 more
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source

Observations of meteoric material and implications for aerosol nucleation in the winter Arctic lower stratosphere derived from in situ particle measurements [PDF]

, 2005
Number concentrations of total and non-volatile aerosol particles with size diameters >0.01 μm as well as particle size distributions (0.4–23 μm diameter) were measured in situ in the Arctic lower stratosphere (10–20.5 km altitude). The measurements were
Curtius, Joachim, A. Roiger, C. Schiller, Werner, Anja, Werner, A., Vössing, H. J., Krebsbach, Michael, Schlager, H., Weigel, Ralf, Volk, Michael, Roiger, A., Roiger, Anke, M. Krebsbach, S. Borrmann, Volk, C.-Michael, Werner, Anja Sabine, Weigel, R., Wernli, H., Dreiling, Volker, A. Werner, Schiller, Cornelius, H. Wernli, C.-M. Volk, Vössing, H.-J., Schiller, C., P. Konopka, Borrmann, Stephan, Curtius, J., Dreiling, V., H.-J. Vössing, Vössing, Hermann-Josef, J. Curtius, R. Weigel, Borrmann, S., Krebsbach, M., J. Curtius, Volk, C.-M., Konopka, P., V. Dreiling, Bormann, Stephan, Volk, C. M., Konopka, Paul, Vössing, Hermann, H. Schlager, Schlager, Hans, Wernli, Heini   +45 more
core   +1 more source

Point-vortex model for Lagrangian intermittency in turbulence

Physical Review E, 2009
Experiments have shown that Lagrangian statistics in turbulent flows display Gaussianly distributed velocity values and non-Gaussianly distributed velocity differences or accelerations. Coherent flow structures in the form of vortices have often been proposed to play an important role in this behavior.
Rast, Mark Peter, Pinton, Jean-Francois
openaire   +4 more sources

Workflow for Design of Experiments‐Based Modeling of Species Transport and Growth Kinetics in GaN Hydride Vapor Phase Epitaxy

Advanced Engineering Materials, EarlyView.
A novel workflow for investigating hydride vapor phase epitaxy for GaN bulk crystal growth is proposed. It combines Design of experiments (DoE) with physical simulations of mass transport and crystal growth kinetics, serving as an intermediate step between DoE and experiments.
J. Tomkovič, G. Lukin, H. Torkashvand, A. Kerschbaum, M. Müller, S. Besendörfer, J. Heitmann, J. Friedrich   +7 more
wiley   +1 more source