Results 81 to 90 of about 2,034 (236)

Designing γ‐TiAl Alloys With Refined Twin‐Lamellar Microstructures via Machine Learning‐Driven Phase‐Field Methods

Materials Genome Engineering Advances, EarlyView.
Dual‐phase γ‐TiAl alloys with refined twin‐lamellar (RTL) structures exhibit optimal strength‐ductility synergy. Here, phase‐field simulations reveal composition‐stress‐dependent refined twin‐lamellar (RTL) microstructure evolution. Machine learning (CatBoost + NSGA‐III) trained on phase‐field images predicts optimal RTL‐stress‐composition design space.
Jianwei Li, Zhenqiang Xiong, Chuanxin Liang, Tianjiao Dong, Heran Wang, Mengyuan Hao, Liqiang He, Tianlong Zhang, Dong Wang   +8 more
wiley   +1 more source

Development of an exhaust air turbine engine

Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2016
The article discusses ways of utilizing exhaust gas heat to improve the power efficiency of heat engines. The concept of an air turbine engine is chosen to make a generator drive with the capacity of 150 kW intended to produce energy for a gas-pumping ...
Yu. S. Yeliseev, D. G. Fedorchenco, Yu. I. Tsibizov, D. D. Tyulkin, A. Yu. Tkachenko   +4 more
doaj   +1 more source

Vibration Attenuation of Cantilever Beam Using Electromagnetic Delayed Feedback

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT This study presents a combined analytical and numerical investigation of a single‐input single‐output delayed feedback controller designed to suppress vibrations in a cantilever beam actuated by an electromagnet positioned beneath its free end. An analytical model was developed using the linearized equation of motion for a transversely excited
Mohammad Alabdullah, Khaled Alhazza
wiley   +1 more source

A Multi-Parameter Iterative Design-Correction Method and Performance Analysis for sCO₂ Axial Turbine Stages

Applied Sciences
To facilitate accurate physical interpretation and representation of various design concepts for supercritical carbon dioxide (sCO2) axial turbines and to improve both the efficiency and accuracy of their thermodynamic design, two conceptual design ...
Luhan Yin, Lei Zhang, Yuang Shi, Luotao Xie, Zichun Yang   +4 more
doaj   +1 more source

On the Aeroacoustic Scaling of Axial Flow Turbines

International Journal of Gas Turbine, Propulsion and Power Systems
Experimental investigations of acoustic excitation and noise propagation in turbomachines require specialized rigs with sophisticated instrumentation. As it remains challenging to integrate such measurements into a real engine, sub-scale test rigs are required with acoustically optimized boundary conditions to isolate acoustic sources.
Lohse, Stefanie, Schuler, Johanna, Fischer, Felix, Seume, Joerg R., Moreau, Stéphane   +4 more
openaire   +1 more source

Fault Detection of Electric Motors via Symmetrized Dot Pattern‐Based Features

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT This study proposes a novel symmetrized dot pattern (SDP) approach using designed SDP‐based features, extracted from transformed vibration signals, for fault detection. These features describe the compactness, inclination, and shape of the “snowflake” diagram distributions.
Mario Spirto, Pierangelo Malfi, Armando Nicolella, Francesco Melluso, Chiara Cosenza, Sergio Savino, Vincenzo Niola   +6 more
wiley   +1 more source

In Situ Curing‐Enabled 3D Printing of Continuous Fiber‐Reinforced Thermosetting Composites

Journal of Polymer Science, EarlyView.
In situ curing‐enabled the 3D printing of continuous fiber/thermoset composites, which were reviewed. Particularly, four types of in situ curing, were discussed, including Radiation‐induced curing, photothermal curing, electrothermal curing, and frontal polymerization. AI‐integrated printing was also analyzed.
Xiaofei Wu, Harrison Hayworth, Shiren Wang   +2 more
wiley   +1 more source

Design and analysis of 10MW 1 + 1/2 supercritical carbon dioxide counter-rotating turbine

Propulsion and Energy
In order to reduce the axial size of the supercritical carbon dioxide (SCO2) Brayton cycle system and enhance its power-weight ratio, this paper proposes a counter-rotating design approach for SCO2 turbines.
Longgang Wu, Chen Yang, Xin Wei, Jinguang Yang, Dayong Wang, Michele Ferlauto   +5 more
doaj   +1 more source

Unmanned Aerial Systems for Corrosion Detection: Multi‐Sensor Technologies, Challenges, and Opportunities for Next‐Generation Inspection

Quality and Reliability Engineering International, EarlyView.
ABSTRACT Corrosion remains a critical threat to the integrity and service life of infrastructure in industries such as oil, gas, construction, renewable energy, and transportation. Traditional inspection methods, being labor‐intensive, hazardous, and often subjective, fall short in addressing modern inspection demands.
Alhossein Alharbi, Yunes Alqudsi, Alhasan Ali Alharbi, Mohammed Basheer Mohiuddin   +3 more
wiley   +1 more source

Sliding Mode Control in Aerospace Applications: A Survey

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT Sliding mode control (SMC) enjoys robustness to matched and unmatched (in the case of minimum phase input‐output dynamics) bounded perturbations, and finite time convergence. Second‐order and higher‐order sliding mode control systems (2‐SMC/HOSMC) retain all the advantages of sliding mode control, but in addition can be applied to systems of ...
Yuri Shtessel, Christopher Edwards
wiley   +1 more source