Results 41 to 50 of about 964 (172)

Flexibilizing inorganic thermoelectrics

FlexMat, EarlyView.
This perspective reviews advances in flexible inorganic thermoelectric materials, covering ductile bulks, thin films, and fibers/yarns. It highlights strategies like warm metalworking, van der Waals material screening, orientation and sandwich engineering, and device integration, offering pathways to combine flexibility and performance for wearable ...
Xiao‐Lei Shi, Nan‐Hai Li, Meng Li, Zhi‐Gang Chen   +3 more
wiley   +1 more source

PROCESSING OF COPPER AND METAL MELTS BY ELECTROMAGNETIC PULSES

Надежность и качество сложных систем, 2023
Background. Electromagnetic Pulse Technology (TEM) is a non-contact pulse process with great potential for connecting dissimilar materials. This method uses pulsed electromagnetic fields to form and connect metals with high conductivity, such as ...
D.V. Deryabin, N.V. Goryachev, N.K. Yurkov   +2 more
doaj   +1 more source

A Fully‐Connected Chip‐Integrated Reconfigurable Mode‐Pairing Quantum Key Distribution Network

Laser &Photonics Reviews, EarlyView.
This work constructs a fully connected reconfigurable chip‐integrated quantum key distribution network via the mode‐pairing protocol. Hybrid ECL and WSS chips cut wavelength and port overhead, realizing arbitrary‐user key sharing with merely two wavelengths.
Xiao‐Lei Jiang, Wei Gao, Yan‐Yang Zhou, Yu Zhou, Yu‐Yao Guo, Yi‐Fei Lu, Yuan‐Chao Yu, Yang Wang, Jia‐Ji Li, Chun Zhou, Hong‐Wei Li, Liang‐Jun Lu, Lin‐Jie Zhou, Jian‐Ping Chen, Wan‐Su Bao   +14 more
wiley   +1 more source

Pulse diffusion welding of female joints

Frontier Materials & Technologies
Special feature of operation of electrovacuum tubes, in particular the cathode assembly, is constant heating due to bombardment of its surface with electrons. Stable characteristics and durability of the cathode assembly depend on high-quality connection
Evgeny L. Strizhakov, Stanislav V. Nescoromniy, Yury G. Lyudmirsky, Nikolay A. Mordovtsev   +3 more
doaj   +1 more source

Transformation sequence of Mg-Si precipitates towards a precipitation of Mn and Cr containing phase governed by the high strain-rate collision during magnetic pulse welding of Al-Mg-Si alloy

Journal of Alloys and Metallurgical Systems, 2023
This paper investigates the transformation of Mg-Si precipitates formed at an interface of an Al-Mg-Si alloy joint, welded by the high strain-rate collision during magnetic pulse impact welding.
R.N. Raoelison, T. Sapanathan, J.S. Li, Z. Zhang, D. Racine, X.-G. Chen, D. Marceau, M. Rachik   +7 more
doaj   +1 more source

Detecting Loosening of Bolt‐Flanged Pipe Using Smoothed Pseudo Wigner–Ville Distribution: Digital Twin‐Based Approach Using Convolution Neural Networks

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT In this paper, an integrated digital twin‐based fault‐diagnosis framework is proposed to detect bolt loosening in flanged pipe connections. The approach combines finite element‐based numerical modeling, experimental modal analysis, and advanced signal processing‐assisted deep learning to achieve reliable loosening detection under operational ...
Milad Shabani Yousefabad, Behzad Totakhaneh Bonab, Morteza Homayoun Sadeghi, Mir Mohammad Ettefagh, Mohammad Reza Chalak Qazani   +4 more
wiley   +1 more source

METHODS OF MAGNETIC PULSE WELDING

IZVESTIA VOLGOGRAD STATE TECHNICAL UNIVERSITY
The article presents the features of various methods of pulsed welding in the solid phase using magnetic pressure according to a scheme with normal loading. A scheme of magnetic-pulse welding, implemented through electrical discharge cleaning without oblique impact, is described. Magnetic pressure is used for forming and welding.
E.L. STRIZHAKOV, S.V. NESCOROMNIY, YU.G. LYUDMIRSKY, N.A. MORDOVTSEV   +3 more
openaire   +1 more source

Highly integrated, alignment healing, and full‐recyclable multifunctional flexible devices based on dynamic covalent bonds

Smart Molecules, EarlyView.
This study addresses stability, repair, and recycling in flexible devices using polymers with identical dynamic bonds but incompatible backbones. This enables robust integration, precise self‐healing, and full recyclability. We demonstrate optoelectronic sensors that, after damage, magnetically self‐assemble and heal upon heating.
Xianfei Cao, Yong Qi, Wenbin Niu, Bingtao Tang, Shufen Zhang   +4 more
wiley   +1 more source

Microstructure characteristics and mechanical properties of Al/Mg joints manufactured by magnetic pulse welding

Journal of Magnesium and Alloys, 2023
The effective connection of 1050 Al and AZ31 Mg was realized by magnetic pulse welding. The maximum tensile-shear force of the dissimilar Al/Mg metal lap joint reached 97% of that of the 1050 Al alloy base material by optimizing the process parameters ...
Congcong Zhu, Shiwei Xu, Wenli Gao, Yifan Meng, Sen Lin, Lu Dai   +5 more
doaj   +1 more source

Arc Resistance Enhancement of Converter Transformer Tank Through Structural Improvements: Simulation and Experimental Validation

High Voltage, EarlyView.
ABSTRACT Currently, limited research exists on the structural response and protection methods of the converter transformer tank for ± 800 kV ultra‐high voltage direct current transmission project to high energy arc faults. This research investigates the dynamic response and the vulnerable areas of the ultra‐high voltage converter transformer under the ...
Ke Wang, Shuqi Zhang, Yikun Zhao, Yichen Wang, Zongliang Zhang, Jinhua Zhang   +5 more
wiley   +1 more source