Results 21 to 30 of about 138,779 (266)

Influence of width on the tensile properties of ±45° fiber-reinforced composites using DIC and AE

Materials & Design
This study investigates the width-dependent tensile behavior and damage mechanisms of ±45° carbon fiber–reinforced polymer (CFRP) laminates through an integrated Digital Image Correlation (DIC) and Acoustic Emission (AE) monitoring framework.
Yi Long, Changfeng Qi, Ruifeng Han, Caigang Guo, Huajie Qiao, Wenfeng Hao   +5 more
doaj   +1 more source

Finds of pre-Scythian bimetallic daggers in the vicinity of Stavropol and in the adjacent areas

Материалы по археологии и истории античного и средневекового Причерноморья, 2021
The article is devoted to the description of four bimetallic daggers of the pre-Scythian time, discovered in the vicinity of Stavropol and in the adjacent regions.
Prokopenko, Yu.A.
doaj   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

AI-Driven Fault Detection and O&M for Wind Turbine Drivetrains: A Review of SCADA, CMS and Digital Twin Integration

Energies
The rapid expansion of wind energy has increased the operational complexity of wind turbines, where component degradation, environmental variability, and maintenance decisions are tightly coupled.
Ning Jia, Jiangzhe Feng, Zongyou Zuo, Zhiyi Liu, Tengyuan Wang, Chang Cai, Qingan Li   +6 more
doaj   +1 more source

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur, Faruk Kaya, Bora Derin, Mustafa Lütfi Öveçoğlu, Ju Li, Duygu Ağaoğulları   +5 more
wiley   +1 more source

Design and Performance Evaluation of a Flexible Lightweight Heating Blanket for Wind Turbine Blade Reinforcement

Applied Sciences
The curing quality of epoxy resin at wind turbine blade joint seams critically affects blade integrity and service reliability, yet conventional metallic heating systems often suffer from poor temperature uniformity, limited flexibility, and slow thermal
Jiaqi Lu, Xuan Cao, Guangjie Yang, Wanjuan Zhang, Yawen Wu, Hui Jiang, Shaochun Tang   +6 more
doaj   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

Insight into Damping Sources in Turbines

Fatigue of Aircraft Structures, 2023
Blade vibrations in aircraft engines are a significant challenge that must be overcome during the design and development of modern turbine engines.
Moneta Grzegorz
doaj   +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

Ti₃C₂T_x-Based Materials and Coatings for De-Icing and Defogging of Wind Turbine Blades: Materials Basis, Structural Design, Engineering Integration, and Future Opportunities

Nanomaterials
In cold, humid environments, even a small amount of ice accumulation on the blade surface can degrade aerodynamic performance, increase drag, induce premature stall and vibration, and raise the risks of shutdown, fatigue, and ice throw.
Weiwei Wu, Kening Peng, Kunqi Zhang, Zhifang Liu, Nana Yao   +4 more
doaj   +1 more source