Concept

Gas tungsten arc welding

Related publications (109)

End-point Impedance Measurements at Human Hand during Interactive Manual Welding with Robot

This paper presents a study of end-point impedance measurement at human hand, with professional and novice manual welders when they are performing Tungsten Inert Gas (TIG) welding interactively with the KUKA Light Weight Robot Arm (LWR). The welding torch ...

2014

Growth kinetics of Al-Fe intermetallic compounds during annealing treatment of friction stir lap welds

Hossein Najafi

In this study, we explored the growth kinetics of the Al-Fe intermetallic (IM) layer at the joint interface of the St-12/Al-5083 friction stir lap welds during post-weld annealing treatment at 350, 400 and 450 degrees C for 30 to 180 mm. Optical microscope ...

Elsevier Science Inc2014

Well-defined mono(eta(3)-allyl)nickel complex MONi(eta(3)-C3H5) (M = Si or Al) grafted onto silica or alumina: a molecularly dispersed nickel precursor for syntheses of supported small size nickel nanoparticles

David Lyndon Emsley, Lu Zhou, Lidong Li

Preparing evenly-dispersed small size nickel nanoparticles over inert oxides remains a challenge today. In this context, a versatile method to prepare supported small size nickel nanoparticles (ca. 1-3 nm) with narrow size distribution via a surface organo ...

ROYAL SOC CHEMISTRY2014

Origin of Anomalous Slip in Tungsten

Helena Van Swygenhoven, Steven Van Petegem, Cécile Renée Maria Marichal

Low-temperature deformation of body-centered cubic metals shows a significant amount of plastic slip on planes with low shear stresses, a phenomenon called anomalous slip. Despite progress in atomistic modeling of the consequences of complex stress states ...

American Physical Society2014

Thermo-mechanical fatigue behaviour of welded tubular parts made of ferritic stainless steel

Roland Logé

Car exhaust manifolds are critical components subjected to cyclic thermo-mechanical fatigue (TMF) during function. To reduce design costs, robust numerical design tools are required to assess their behaviour and lifetime. Manifolds are constructed by weldi ...

2013

Simulation of welding stresses for fatigue design of welded tubular connections

Alain Nussbaumer, Jean-Marie Drezet, Claire Acevedo

This paper presents a 3D thermo-mechanical model of arc-welding applied to tubular K-joints susceptible to fatigue cracking. The 3D torch trajectory is reproduced to simulate both temperatures and stresses during welding and ultimately the 3D residual stre ...

TU-Graz2013

Dynamic Response of a Chevron Concentrically Braced Frame

Dimitrios Lignos

Large-scale shake table tests were conducted at E-Defense, Japan, to examine the dynamic response of a steel concentrically braced frame. The specimen was a single-bay, single-story frame with a pair of square hollow structural section braces placed in a c ...

American Society of Civil Engineers2013

Three-dimensional chemical analysis of laser-welded NiTi–stainless steel wires using a dual-beam FIB

Michel Rappaz, Aïcha Hessler-Wyser, Marco Cantoni, Pierre Burdet, Jonas Vannod

The biomedical industry has an increasing demand for processes to join dissimilar metals, such as laser welding of NiTi and stainless steel wires. A region of the weld close to the NiTi interface, which previously was shown to be prone to cracking, was fur ...

Elsevier2013

Numerical modelling and experimental investigation on welding residual stresses in large-scale tubular K-joints

Alain Nussbaumer, Jean-Marie Drezet, Claire Acevedo

This paper is devoted to the experimental and numerical assessment of residual stresses created by welding in the region surrounding the weld toe of tubular K-shaped joints (i.e. region most sensitive to fatigue cracking). Neutron-diffraction measurements ...

Wiley-Blackwell2013

Multiscale, Multiphysics Numerical Modeling of Fusion Welding with Experimental Characterization and Validation

Jonathan Dantzig, Jun Liu, Yu Xie

Various physical interfacial phenomena occur during the process of welding and influence the final properties of welded structures. As the features of such interfaces depend on physics that resolve at different spatial scales, a multiscale and multiphysics ...

Springer Verlag2013

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