Category
Welding
Related publications (153)
Quantifying mass transport limitations in a microfluidic CO2 electrolyzer with a gas diffusion cathode
Sophia Haussener, Venu Gopal Agarwal
A gas diffusion electrode (GDE) based CO2 electrolyzer shows enhanced CO2 transport to the catalyst surface, significantly increasing current density compared to traditional planar immersed electrodes. A two-dimensional model for the cathode side of a micr ...
2024Piezoelectric and elastic properties of Al0.60Sc0.40N thin films deposited on patterned metal electrodes
Luis Guillermo Villanueva Torrijo, Silvan Stettler, Marco Liffredo, Nan Xu, Federico Peretti
Sc-doped aluminum nitride (AlScN) allows for piezoelectric devices with large electromechanical coupling and the benefits increase with larger Sc doping in the film. However, with a larger Sc concentration, the process window narrows, and it is necessary t ...
2024Experimental Investigation of Instability-Free Welded Moment Connections With Simplified Weld Details
Dimitrios Lignos, Andronikos Skiadopoulos
In capacity designed steel moment resisting frames, inelastic deformations are mostly concentrated in the steel beams and the column fixed ends of the first story. This design concept limits the participation of the column web’s panel zone in the energy di ...
2023Control of intermetallics in the interface in directed energy deposition of titanium on stainless steel 316L
Application of a single metal or alloy is often restricted by its properties from optimal combination of performance and cost. Therefore, there is a vast need of joining dissimilar metals for various applications in biomedical, aerospace, automobile and ma ...
EPFL2023Simultaneous strength and ductility enhancement of wire-arc directed energy deposited Al-Cu alloy by interlayer laser shock peening
Wire-arc directed energy deposition (wire-arc DED), recognized for its ability to produce large-scale parts, has gained considerable attention. However, a critical issue with this method is the high prevalence of internal porosity defects found in the manu ...
Lausanne2023Hysteretic behaviour of welded connections with highly inelastic panel zones
Dimitrios Lignos, Andronikos Skiadopoulos
The current practice in capacity-designed steel moment resisting frames (MRFs) worldwide allows for limitedshear yielding in the column web panel zone. As such, inelastic deformations concentrate near the beam ends, thereby leading to flexural stre ...
Ernst & Sohn2023Full-scale testing of European steel beams with reduced beam section under reversed cyclic loading
Dimitrios Lignos, Hiroyuki Inamasu
Steel beams with reduced beam section (RBS) are often used as part of prequalified connections in seismic regions. However, RBS connections are not as common in Europe. Reasons relate to easiness in fabrication, which requires on-site welding, and the seis ...
Springer Nature2022Realistic Modelling of Dynamics at Nanostructured Interfaces Relevant to Heterogeneous Catalysis
The focus of this short review is directed towards investigations of the dynamics of nanostructured metallic heterogeneous catalysts and the evolution of interfaces during reaction-namely, the metal-gas, metal-liquid, and metal-support interfaces. Indeed, ...
MDPI2022Experimental Investigation of the Inelastic Cyclic Behavior of Concrete-Filled Double-Skin Tubular Beam-Columns with Corrugated Inner Skins and Ultrahigh-Strength Corner Tubes
Dimitrios Lignos, Mojtaba Farahi
This paper presents the experimental results from nine full-scale concrete-filled double-skin tubular (CFDST) beam-columns. The test specimens exploited two fabrication strategies, featuring either hollow steel inner skins with corrugated geometry or ultra ...
ASCE-AMER SOC CIVIL ENGINEERS2022Welded moment connections with highly dissipative panel zones for enhanced seismic performance of steel moment frames
Research conducted after the 1994 Northridge earthquake in the U.S. and the 1995 Kobe earthquake in Japan led to the development of today's pre-qualified beam-to-column connections for capacity-designed steel moment resisting frames (MRFs). Welded moment c ...
EPFL2022