Results 81 to 90 of about 149,234 (263)

Distorted Universality: Universal Properties Modulo Controlled Distortion

Universal properties can be read as the transport of equality-based uniqueness "forall x, exists unique y, P(x,y)" to a categorical regime where object-level uniqueness is relaxed to "up to isomorphism." In many semantic models motivated by computation, physics, and resource-sensitive reasoning, even isomorphism is too rigid: exchange can be lossy or ...
openaire   +1 more source

A Simplified Laminar Flow Model for the Pultrusion of Glass Fiber/Polyethylene Terephthalate Commingled Yarns

Advanced Engineering Materials, EarlyView.
A simplified thermoplastic pultrusion model is developed to predict thermal fields in glass fiber/polyethylene terephthalate (GF/PET) composites with reduced computational cost. By combining effective material homogenization, validation against literature data, and Gaussian‐process‐based optimization, the study reveals how heating limits, pulling speed,
Elder Soares, Nadège Bouchonneau, Christian Jochum, Donald Radford   +3 more
wiley   +1 more source

Correction of Aero-Optical Effect with Blow–Suction Control for Hypersonic Vehicles

Applied Sciences
High-speed turbulence induces significant aero-optical effects that severely disrupt the functionality of imaging systems of hypersonic vehicles. In this study, the aero-optical correction of various jet cooling modes is investigated using a Terminal ...
Yubo Li, Shuanghou Deng, Caijun Xue, Tianhang Xiao   +3 more
doaj   +1 more source

Affecting the Properties of Copper–Graphene Electroconductive Composite by Severe Plastic Deformation

Advanced Engineering Materials, EarlyView.
Copper‐based composites enhanced with carbon feature convenient mechanical properties and favorable electric conductivity. Processing via deformation and thermomechanical treatments can introduce advantageous microstructures further enhancing their performance. Herein, copper–graphene powder‐based composites are directly consolidated via rotary swaging
Radim Kocich, Lenka Kunčická, Pavel Czernek, Zifan Wang   +3 more
wiley   +1 more source

Application of Space Vector Modulation in Direct Torque Control of PMSM

Advances in Electrical and Electronic Engineering, 2008
The paper deals with an improvement of direct torque control method for permanent magnet synchronous motor drives. Electrical torque distortion of the machine under original direct torque control is relatively high and if proper measures are taken it can
Michal Malek, Jan Vittek, Vladimir Vavrus, Marek Stulrajter   +3 more
doaj  

OPTIMIZATION OF PROCESS PARAMETERS TO MINIMIZE ANGULAR DISTORTION IN GAS TUNGSTEN ARC WELDED STAINLESS STEEL 202 GRADE PLATES USING PARTICLE SWARM OPTIMIZATION [PDF]

Journal of Engineering Science and Technology, 2012
This paper presents a study on optimization of process parameters using particle swarm optimization to minimize angular distortion in 202 grade stainless steel gas tungsten arc welded plates.
R. SUDHAKARAN, V. VEL MURUGAN, P. S. SIVASAKTHIVEL   +2 more
doaj  

Symbolic Regression and Multi‐Objective Optimization of the Flory–Huggins Interaction Parameter for Hydrogels

Advanced Engineering Materials, EarlyView.
We develop a data‐driven method to derive the mathematical expressions of the Flory–Huggins interaction parameter χ for the swelling behavior of temperature–responsive hydrogels. Starting from initial assumptions of χ, our workflow combines Bayesian optimization, Flory–Rehner theory, and symbolic regression to generate candidate χ expressions.
Yawen Wang, Adrian Ehrenhofer, Thomas Wallmersperger   +2 more
wiley   +1 more source

Performance and Adaptive Surge-Preventing Acceleration Prediction of a Turboshaft Engine under Inlet Flow Distortion

MATEC Web of Conferences, 2017
The intention of this paper is to research the inlet flow distortion influence on overall performance of turboshaft engine and put forward a method called Distortion Factor Item (DFI) to improve the fuel supply plan for surge-preventing acceleration when
Cao Dalu, Tang Hailong, Chen Min
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

Control device nonlinear distortion radioelement

VESTNIK of Samara University. Aerospace and Mechanical Engineering, 2014
Considered control device radioelements nonlinear distortion in the transmission path and the amplification of electrical signals. On the causes of non-linear distortion. Given the composition of the control device and communication between its units. Shows the process of converting radio signals. The device provides higher selectivity and precision of
G. P. Shopin, S. V. Tyulevin, M. N. Piganov, A. V. Nasedkin   +3 more
openaire   +2 more sources