Concept

Hydrogen embrittlement

Related publications (137)

Investigation of hydrogen storage in carbon nanotube-magnesium matrix composites

Daniele Mari, Robert Schaller, Iva Tkalcec Vâju

Magnesium (Mg) and magnesium nickel (Mg-23.5 wt%Ni) reinforced with multiwalled carbon nanotubes (CNTs) were processed by powder metallurgy and then charged with hydrogen by annealing at 620 K under a pressure of 0.4 MPa of hydrogen. Mechanical spectroscop ...

2009

Kondo-effect of substitutional cobalt impurities at copper surfaces

Klaus Kern, Peter Wahl

The influence of the coordination on the Kondo temperature of a magnetic impurity at a noble metal surface and the line shape observed in low temperature scanning tunneling spectroscopy (STS) is investigated for single cobalt atoms adsorbed on and embedded ...

2009

Development of low-firing lead-free thick-film materials on steel alloys for piezoresistive sensor applications

Peter Ryser, Thomas Maeder, Caroline Jacq

Piezoresistive sensors based on steel and other metallic substrates provide higher strain response than on standard ceramic substrates and are more easily packaged. But exposing high-strength steels to the standard high- temperature 850°C thick-film firing ...

IEEE Service Center2009

Experimental identification of adhesive properties between epoxy and glass

Aleksandar Sekulic

In this thesis, a simple law of adhesion with "digital" decohesion is proposed for modeling unilateral contact with adhesion, together with a stable experiment based on an original axisymmetric epoxy-stamp on glass-disc specimen for measuring the relevant ...

EPFL2008

Evaluation of toughness by finite fracture mechanics from crack onset strain of brittle coatings on polymers

Yves Leterrier, Grégory Tornare

Crack onset strain measurements of a confined layer in tension provide the means for layer toughness estimation. The procedure can be simplified if steady-state conditions prevail starting from the commencement of crack propagation, an assumption frequentl ...

Elsevier2008

Probabilistic fatigue analysis of shop and field treated tubular truss bridges

Alain Nussbaumer, Scott Walbridge

This article examines the extent to which post-weld treatment by needle peening can improve the fatigue performance of tubular truss bridges. To do this, the various potential crack sites on several variants of a typical bridge are analyzed using a probabi ...

Elsevier2008

Pulse plating of Ni-W alloys from model electrolytes

Dieter Landolt

Pulse plating of nickel-tungsten alloys has been studied from two citrate ammonia based model electrolytes containing either an excess of nickel or an excess of tungsten. The alloy composition and current efficiency were determined for pulse periods rangin ...

2008

Monitoring of process induced strains in a single fibre composite using FBG sensor: A methodological study

John Botsis, Joël Cugnoni, Dimitrios Karalekas

A partially embedded long fibre-Bragg grating (FBG) into an epoxy cylindrical specimen is used to monitor the strain distribution evolution along its axis when subjected to subsequent cycles of thermal ageing at 70 and 110 degrees C. Assuming a total volum ...

2008

A probabilistic assessment of the effect of post-weld treatment on the fatigue performance of tubular truss bridges

Alain Nussbaumer, Scott Walbridge

In the design of tubular truss bridges, engineers have found the fatigue performance of the joints to be a critical aspect. In looking for ways to improve this performance, the use of residual stress-based post-weld treatments has been suggested. Although ...

Elsevier2008

Elastic properties of chemically derived single graphene sheets

Klaus Kern, Marko Burghard

The elastic modulus of freely suspended graphene monolayers, obtained via chemical reduction of graphene oxide, was determined through tip-induced deformation experiments. Despite their defect content, the single sheets exhibit an extraordinary stiffness ( ...

2008

Graph Chatbot

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.