Results 31 to 40 of about 20,755 (235)

The technology of thermal welding of the circulation piping of NPPS containing the influence of ultrasound

Nuclear Energy and Technology, 2017
The authors propose a thermal welding technology with ultrasound treatment for NPP circulation pipe-lines. This technology can significantly increase the strength of welded connections by reducing residual stresses, grain size and welded joint degassing.
S.I. Minin, A.I. Trofimov, M.A. Trofimov
doaj   +1 more source

Influence of Single-Sided Ultrasonic Assistance on the Double-Sided Welding Forming Quality of Q355 Thin Plates

Metals
To solve the problems of large deformation and poor welding quality commonly observed during the double-sided welding of Q355 thin plates, this study systematically investigated the effects of single-sided ultrasonic-assisted welding on the weld ...
Peng Yin, Wenkai Li, Chunguang Xu, Zekai Wang, Tingting Hao, Lin Wang   +5 more
doaj   +1 more source

Ultrasonic Inspection of a 9% Ni Steel Joint Welded with Ni-based Superalloy 625: Simulation and Experimentation

Metals, 2018
The ultrasonic inspection of thick-walled welded joint with austenitic weld metal has proven to be a challenge due to its anisotropic microstructure that can promote ultrasonic waves attenuation.
João da Cruz Payão Filho, Elisa Kimus Dias Passos, Rodrigo Stohler Gonzaga, Ramon Fonseca Ferreira, Daniel Drumond Santos, Diego Russo Juliano   +5 more
doaj   +1 more source

Microstructure investigation and optimization of process parameters of ultrasonic welding for Al–Cu dissimilar joints using design of experiment

Journal of Materials Research and Technology
Ultrasonic Metal Welding (UMW) employs high-power ultrasonic vibrations to join thin metal sheets of different materials, effectively addressing the thermal damage issues associated with traditional welding methods.
Negin Goodarzi, Ramin Hashemi, Rezvan Abedini   +2 more
doaj   +1 more source

Development of a High-Frequency Test System to Study the Wear of Ultrasonic Welding Tools

Metals, 2023
In current automotive lithium-ion battery manufacturing, Ultrasonic Metal Welding (USMW) is one of the major joining techniques due to its advantages in welding multiple thin sheets of highly conductive materials.
Junqi Li, Michael Rienks, Frank Balle
doaj   +1 more source

Multi-Spot Ultrasonic Welding of Aluminum to Steel Sheets: Process and Fracture Analysis

Metals, 2021
Ultrasonic metal welding is an energy-efficient, fast and clean joining technology without the need of additional filler materials. Single spot ultrasonic metal welding of aluminum to steel sheets using automotive materials has already been investigated.
Michael Becker, Frank Balle
doaj   +1 more source

Process Parameters Optimization for Ultrasonically Consolidated Fiber-Reinforced Metal Matrix Composites [PDF]

, 2006
As an emerging rapid prototyping technology, Ultrasonic Consolidation (UC) has been used to successfully fabricate metal matrix composites (MMC). The intent of this study is to identify the optimum combination of processing parameters, including ...
Janaki Ram, G. D., Stucker, B. E., Yang, Y.   +2 more
core   +1 more source

Dynamic control of current and voltage waveforms and droplet transfer for ultrasonic-wave-assisted underwater wet welding

Materials & Design, 2019
Ultrasonic vibration can change the dynamic behavior of the bubble and improve the process stability in underwater wet welding (UWW); thus, it has been attempted to profitably control metal transfer process.
Jianfeng Wang, Qingjie Sun, Shaojun Hou, Tao Zhang, Peng Jin, Jicai Feng   +5 more
doaj   +1 more source

Conductive Bonding and System Architectures for High‐Performance Flexible Electronics

Advanced Functional Materials, EarlyView.
This review outlines bonding technologies and structural design strategies that support high‐performance flexible and stretchable electronics. Bonding approaches such as surface‐activated bonding and anisotropic conductive films, together with system‐level architectures including buffer layers and island‐bridge structures, possess distinct mechanical ...
Kazuma Nakajima, Kenjiro Fukuda
wiley   +1 more source

Study on Ultrasonic Welding of Aluminimum Sheets [PDF]

, 2015
Ultrasonic welding is used to weld thin sheet metals of similar or dissimilar couples of non-ferrous alloys like copper, aluminum and magnesium without addition of filler material resulting in high quality weld; it can count on a low energy consumption ...
Sahoo, Ajitesh
core