Results 91 to 100 of about 278,878 (295)
Advanced Science, EarlyView.A Janus‐like bio‐inspired strategy is proposed for integrally 3D‐printed bimetallic metamaterials. Inspired by shell bilayers, a heat‐resistant AlSiFeMnNiMg alloy and a SiC‐reinforced AlSi10Mg with different SiC volume fractions are arranged as an architected pair.
Zhicheng Dong +5 more
wiley +1 more source
Advanced Science, EarlyView.A thermally programmable two‐port non‐Hermitian acoustic metastructure is presented, where temperature acts as a non‐geometric tuning variable. Thermal modulation reconfigures impedance matching and loss‐leakage coupling, enabling exceptional‐point driven, broadband, and direction‐dependent sound absorption without requiring geometric reconfiguration ...
Zichao Guo +6 more
wiley +1 more source
Large-Scale Piezoelectric-Based Systems for More Electric Aircraft Applications. [PDF]
Micromachines (Basel), 2021 Vo TVK +4 more
europepmc +1 more source
State-of-the-Art Lightweight Implementation Methods in Electrical Machines
MachinesThe demand for high-power density motors has been increasing due to their remarkable output capability and compact construction. To achieve a significant improvement in motor power density, lightweight design methods have been recognized as an effective ...
Han Zhao +10 more
doaj +1 more source
Advanced Science, EarlyView.Graphene‐skinned alumina fiber (GAF) is a new composite with graphene conformally grown on individual alumina fibers via chemical vapor deposition (CVD). GAF's dynamic, continuous and scalable production is achieved by using a home‐made roll‐to‐roll (RTR) CVD system featuring integrated degumming and growth chambers. GAF possesses tunable conductivity,
Xiaobai Wang +13 more
wiley +1 more source
Dahlin-Based Fast and Robust Current Control of a PMSM in Case of Low Carrier Ratio
IEEE Access, 2019 The low ratio of sampling frequency to electrical frequency (carrier ratio) is a challenging issue for applications, such as high-speed or high-power drives.
Stefan Walz +3 more
doaj +1 more source
Power Electronics Application for More Electric Aircraft [PDF]
, 2012 In the competitive world of airline economics, where low cost carriers are driving dawn profit margins on airline seat miles, techniques for reducing the direct operating costs of aircraft are in great demand. In effort to meet this demand, the aircraft manufacturing industry is placing greater emphasis on the use of technology, which can influence ...
openaire +2 more sources
Scalable Laser Processing Enables Transparent, Accretion Scale‐Independent, Ice‐Shedding Glass
Advanced Science, EarlyView.We demonstrate a scalable laser‐based method to create wave‐like micro‐patterns on glass surfaces that counter the conventional view that roughness increases ice adhesion. These patterns direct crack propagation at the ice–glass interface, enabling low‐force, multi‐directional ice detachment while maintaining substrate transparency. A theoretical model
Fan‐Wei Wang +4 more
wiley +1 more source
Energies, 2019 This paper analyzes the performance of a three-phase converter architecture with a reduced common mode voltage to be used in electric motor drives. Starting from the classical three-phase bridge architecture, two additional switches are inserted in the ...
Luca Concari +7 more
doaj +1 more source
Active Metamaterials with Tunable Shear Nonreciprocity and Nonlinear Dynamics
Advanced Science, EarlyView.Active gear‐based mechanical metamaterials enable simultaneous control of translational and torsional stiffnesses by 30–100×, break shear reciprocity under positive versus negative loads, broadly tune resonant frequencies, and offer programmable dynamic responses.
Xin Fang, Miao Yu, Dianlong Yu, Li Cheng
wiley +1 more source