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Robotic Assistance by Impedance Compensation for Hand Movements While Manual Welding

Related publications (39)

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Soudage laser or-acier

Denis Favez

In jewelry manufacturing, joining dissimilar materials is usually achieved by brazing or soldering, in which the materials comprising the joint are heated to a suitable temperature in the presence of a filler metal having a liquidus below the solidus of th ...

EPFL2009

Nd:YAG laser joining between stainless steel and nickel-titanium shape memory alloys

Michel Rappaz, Aïcha Hessler-Wyser, Jonas Vannod

Nickel-Titanium (NiTi) shape memory alloys are often used in medical component devices, for instance as guide wires for neurological surgery applications. The manufacture of such devices becomes more and more challenging, especially considering the need to ...

2008

On the Damper-Bar Current Calculation For High Power Salient Poles Synchronous Machines

Jean-Jacques Simond, Basile Kawkabani, György Atilla Bànyai

The goal of the paper was to analyze the current distribution of a high-power salient-pole synchronous machine damper winding. A few methods were considered but only two analytical methods are highlighted. Both methods arc based on parameter calculation by ...

2008

Development of friction welding of wood

Bernhard Stamm

For several decades friction welding technology has found broad application in many fields of the metal and plastic connection industry. The fabricated joints are laminar or punctiform depending upon the shape of the parts to be welded. The work presented ...

EPFL2005

Joining wood by friction welding

Bernhard Stamm, Julius Natterer

At the Chair of Timber Constructions of the Swiss Federal Institute of Technology in Lausanne (EPFL) tests were carried out to join wooden work pieces by friction welding without any additional welding deposit. It could be determined that this kind of tech ...

2005

Laser micro-spot welding of copper by real-time process monitoring

Simone Amorosi

A new laser micro-spot welding procedure for copper has been developed in order to eliminate the shortcomings of existing techniques based on laser pulse shaping or in-situ temperature control. This procedure consists in dividing the welding process in fou ...

EPFL2004

Process for avoiding cracking in welding

Michel Rappaz, Wilfried Kurz, Jean-Daniel Wagnière

The new welding process avoids cracking in welding, in repair welding or in cladding of parts of metallic alloys which are sensitive to hot cracking. The process is using a first heat source (15), directed to the parts (11, 12) of the metallic alloy formin ...

2003

Reliable laser micro-spot welding of copper

René Salathé, Thomas Sidler, Simone Amorosi

Nd:YAG laser welding of high reflectivity metals is difficult because of the highly non-linear light-material interaction yielding a narrow process window and poor reliability. However, achieving high reliability is mandatory for applying this technique in ...

2003

Characterisation and origin of arc fluctuations in a F4 DC plasma torch used for thermal spraying

Christoph Hollenstein

The fluctuating behaviour of a Sulzer Metco F4 DC plasma gun has been investigated. The time dependencies of the arc voltage and current and of the optical emission of the plasma jet have been measured. An optical fibre inside the gun allows direct measure ...

2001