Results 71 to 80 of about 329,096 (279)

Improved Stiffness Modeling for An Exechon-Like Parallel Kinematic Machine (PKM) and Its Application

Chinese Journal of Mechanical Engineering, 2020
Hole drilling or contour milling for the large and complex workpieces such as automobile panels and aircraft fuselages makes a high combined demand on machining accuracy, stiffness and workspace of machining equipment.
Nanyan Shen, Liang Geng, Jing Li, Fei Ye, Zhuang Yu, Zirui Wang   +5 more
doaj   +1 more source

Smart, Bio‐Inspired Polymers and Bio‐Based Molecules Modified by Zwitterionic Motifs to Design Next‐Generation Materials for Medical Applications

Advanced Functional Materials, EarlyView.
Bio‐based and (semi‐)synthetic zwitterion‐modified novel materials and fully synthetic next‐generation alternatives show the importance of material design for different biomedical applications. The zwitterionic character affects the physiochemical behavior of the material and deepens the understanding of chemical interaction mechanisms within the ...
Theresa M. Lutz, Jonas De Breuck, Sahar Salehi, Meike N. Leiske   +3 more
wiley   +1 more source

The control method of a quadrotor driven by bidirectional electronic speed controllers

Scientific Reports
In this paper, a dynamic quadrotor unmanned aircraft vehicle driven by bidirectional electronic speed controllers is proposed to enhance maneuverability and stability.
Lihao Xu, Zhiduan Cai, Yuling Wang, Zhongyi Shen   +3 more
doaj   +1 more source

Research on Elastic Composite Cylindrical Roller Bearing Contact Fatigue Based on the Subsurface Stress

International Journal of Rotating Machinery, 2023
In order to study the elastic contact fatigue problems of composite cylindrical roller bearing, through the three stages of contact fatigue crack initiation, propagation, and ablating of cylindrical roller bearing theoretically analyzed, the subsurface ...
Wen Yang, Qishui Yao, Jianghong Yu, Yunxin Kuang, Jianfeng Huang   +4 more
doaj   +1 more source

Maintenance management and operational support as services in reconfigurable manufacturing systems [PDF]

, 2009
Emergent architectures and paradigms targeting reconfigurable manufacturing systems increasingly rely on intelligent models to maximize the robustness and responsiveness of modern installations.
Barata, José, Leitão, Paulo, Ribeiro, Luis, Silvério, Nelson   +3 more
core   +1 more source

Functional Materials for Environmental Energy Harvesting in Smart Agriculture via Triboelectric Nanogenerators

Advanced Functional Materials, EarlyView.
This review explores functional and responsive materials for triboelectric nanogenerators (TENGs) in sustainable smart agriculture. It examines how particulate contamination and dirt affect charge transfer and efficiency. Environmental challenges and strategies to enhance durability and responsiveness are outlined, including active functional layers ...
Rafael R. A. Silva, Giulio Fatti, Emanuel Carlos, Guilherme Ferreira, Sumita Goswami, Suman Nandy, Luiz H. C. Mattoso, Elvira Fortunato, Caio G. Otoni, Rodrigo Martins   +9 more
wiley   +1 more source

Detection of Welding Defects Using the YOLOv8-ELA Algorithm

Applied Sciences
To address the issue of the low precision in detecting defects in aluminum alloy weld seam digital radiography (DR) images using the current target detection algorithms, a modified algorithm named YOLOv8-ELA based on YOLOv8 is proposed.
Yunxia Chen, Yangkai He, Lei Wu
doaj   +1 more source

Multicolor Optoelectronic Synapse Enabled by Photon‐Modulated Remote Doping in Solution‐Processed Van Der Waals Heterostructures

Advanced Functional Materials, EarlyView.
Multicolor optoelectronic synapses are realized by vertically integrating solution‐processed MoS2 thin‐film and SWCNT. The electronically disconnected but interactive MoS2 enables photon‐modulated remote doping, producing a bi‐directional photoresponse.
Jihyun Kim, Hyunbin Kim, Gang Jin Cheon, Dohyun Lee, In Soo Kim, Uiyeon Won, Jongseok Lee, Sang Min Won, Joohoon Kang   +8 more
wiley   +1 more source

Rake angle optimization for balanced efficiency and durability in PDC cutter cutting granite interaction via infrared thermal dynamics and fragmentation mechanism

Scientific Reports
In deep drilling operations, the interaction mechanism between the Polycrystalline Diamond Compact (PDC) cutter and the granite directly affects the granite breaking efficiency and the service life of the cutter.
Xiangjiang He, Bin Zheng, Zhecheng Luo, Peihao Hu, Yunjin Yang, Guofu Yin   +5 more
doaj   +1 more source

Multiband Switchable Microwave Absorbing Metamaterials Based on Reconfigurable Kirigami–Origami

Advanced Functional Materials, EarlyView.
A reconfigurable metamaterial featuring tunable microwave‐absorbing and load‐bearing performance is proposed. Stretchable kirigami and bistable origami configurations are integrated as actuating components, and the synergistic deformation mechanisms are systematically analyzed.
Weimin Ding, Zhong Zhang, Zeang Zhao, Shengyu Duan, Panding Wang, Xiaogang Guo, Hongshuai Lei, Daining Fang   +7 more
wiley   +1 more source