Results 71 to 80 of about 908 (188)

Analysis of the Effect of Ultrasonic Welding on Microstructure [PDF]

, 2018
Ultrasonic welding is very useful for joining thin metal sheets. The effect of ultrasound on microstructure is currently not well understood because the changes produced depend very much on the welding parameters and the properties of the metal being ...
Pinke, Péter, Kovács, Tünde
core   +1 more source

Resource‐Aware Contrastive Scattering Meta‐Learning for Efficient Few‐Shot Acoustic Anomaly Detection

Advanced Intelligent Systems, EarlyView.
This paper introduces a resource‐aware Contrastive Scattering Meta‐Learning (CSML) framework for acoustic anomaly detection. By leveraging training‐free wavelet scattering and metric‐based meta‐learning, the model achieves competitive performance with only 50 K learnable parameters—a 98% reduction compared to state‐of‐the‐art frameworks—enabling ...
Rami Zewail, Bassem Mokhtar
wiley   +1 more source

Numerical analysis of ultrasonic spot welding of metal sheets: a review

, 2023
Ultrasonic spot welding has recently garnered significant attention as a method for joining metal sheets. Numerical simulation plays an important role in understanding the principles of this process and improving the quality of the ultrasonic spot welded
Z. L. Ni (17052973), L. Huang (680452), Y. Liu (543492), A. Nazarov (17052979), Z. P. Yuan (17052982), X. X. Wang (12086391), F. X. Ye (17052985), B. H. Li (17052976)   +7 more
core   +1 more source

Design of High‐Performance MnCo1.5Cu0.5O4 Spinel Contact Material with Optimized Electrical Conductivity and Thermal Stability for Solid Oxide Electrolysis Cells by Cu Doping

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Cu‐doped spinel MnCo1.5Cu0.5O4 exhibits excellent conductivity and stability as SOC contact material. After 1000‐h aging at 850 °C, the contact layer maintains a 10 mΩ cm2 ASR value, and a single‐cell stack achieves a H2O/CO2 co‐electrolysis power density of 0.52 W cm−2.
Haozhen Li, Shuai Yuan, Xingtong Mao, Hao Shi, Hengyong Tu, Chao Ma, Lei Zhu, Zhen Huang   +7 more
wiley   +1 more source

Entropy‐Driven Innovations: Entropy Stabilized Oxides for High‐Performance Next‐Generation Lithium–Sulfur Batteries

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This article explores high‐entropy‐stabilized oxides (HEOs) as novel functional materials for addressing critical issues in lithium–sulfur (Li–S) batteries, including lithium polysulfide (LPS) shuttling, inadequate conductivity, and slow redox kinetics.
Hassan Raza, Jialiang Wei, Zhicai Wang, Zhaoyang Lv, Junye Cheng, Jia Xu, Liang An, Yuliang Liu, Sergey Ryazantsev, Shukui Li, Guangping Zheng   +10 more
wiley   +1 more source

Orthogonal experiments and bonding analysis of ultrasonic welded multi-layer battery foils and tabs

Engineering Science and Technology, an International Journal
The motivation for this research stems from the growing demand for solid-phase welding technology to join multilayers metals, particularly in green electric vehicles.
Lun Zhao, Jianxiong Su, Jiguang Li, Zeshan Abbas, Haiping Dai, Long Ma   +5 more
doaj   +1 more source

Real time defect detection in welds by ultrasonic means

, 1992
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.A computer controlled weld quality assurance system has been developed to detect weld defects ultrasonically whilst welding is in progress.
Lu, Yicheng, Lu, Y
core  

Ultrasonic metal welding of AA6022- T4 lap joints. Part II: fatigue behaviour, failure analysis and modelling

, 2011
The present paper reports the second part of a research carried out by the authors on the application of ultrasonic metal spot welding to lap joints made of AA 6022-T4 thin sheets.
ANNONI, MASSIMILIANO PIETRO GIOVANNI, M Annoni, CARBONI, MICHELE, M Carboni   +3 more
core   +1 more source

Experimental and Comparative Study of the Corrosion Behavior of Lean Duplex Stainless Steel in Seawater

Materials and Corrosion, EarlyView.
The localized corrosion behavior of lean duplex stainless steel EN 1.4062 is systematically compared with austenitic and higher‐alloyed duplex grades in natural seawater. A clear resistance ranking is established, highlighting EN 1.4062 as a cost‐effective alternative for limited marine exposure.
Mohammad Hassanzadeh, Nicolas Larché, Audrey Allion‐Maurer, Raf Dewil, Barbara Rossi   +4 more
wiley   +1 more source

Surface crack detection in Cu/Al ultrasonic welding based on improved CenterNet

Hanjie xuebao
Micro-cracks generated during ultrasonic welding of thin sheet metal seriously affect the welding quality. By taking Cu/Al ultrasonic welded joints as objects, an improved CenterNet network was proposed and applied to ultrasonic welding crack detection ...
Huan LI, Jun LI, Linqian XU, Zhenze GAO, Chengyu XIA, Xu ZHENG, Zenglei NI   +6 more
doaj   +1 more source