A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Ultrasonic-assisted brazing of titanium joints using Al-Si based fillers: numerical and experimental process design
The ultrasonic-assisted brazing process was studied both numerically and experimentally. The ultrasonic brazing system was modeled by considering the actual brazing conditions. The numerical model showed the distribution of acoustic pressure within the filler and its variations according to the gap distance at different brazing temperatures. In the experimental part, brazing joints were studied and evaluated under multiple conditions and parameters. Although either the initial compression load or the ultrasonic vibration (USV) can initiate the interaction at the interface, the combined effect of both helped to produce joints of a higher quality with a relatively short brazing time, which can be further optimized in terms of their mechanical strength. The effect of the Si content on the joint interface, and the effect of the brazing conditions on the microstructures were studied and discussed. ; This work was done with the support of the PEACE II, Erasmus Mundus Lot 2 Project (2013-2443/001-001-EMA2) and the Global Platform for Syrian Students in Portugal.
Ultrasonic-assisted brazing of titanium joints using Al-Si based fillers: numerical and experimental process design
The ultrasonic-assisted brazing process was studied both numerically and experimentally. The ultrasonic brazing system was modeled by considering the actual brazing conditions. The numerical model showed the distribution of acoustic pressure within the filler and its variations according to the gap distance at different brazing temperatures. In the experimental part, brazing joints were studied and evaluated under multiple conditions and parameters. Although either the initial compression load or the ultrasonic vibration (USV) can initiate the interaction at the interface, the combined effect of both helped to produce joints of a higher quality with a relatively short brazing time, which can be further optimized in terms of their mechanical strength. The effect of the Si content on the joint interface, and the effect of the brazing conditions on the microstructures were studied and discussed. ; This work was done with the support of the PEACE II, Erasmus Mundus Lot 2 Project (2013-2443/001-001-EMA2) and the Global Platform for Syrian Students in Portugal.
Ultrasonic-assisted brazing of titanium joints using Al-Si based fillers: numerical and experimental process design
Muhrat, Abdulsalam (author) / Barbosa, J. (author)
2021-10-23
1686
Article (Journal)
Electronic Resource
English
DDC:
690
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