Concept

Essai de flexion par choc sur éprouvette entaillée Charpy

Publications associées (73)

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In this work we develop a methodology to probe the strength and toughness of microscopic brittle phases by combining focused ion beam (FIB) milling methods with microtesting techniques and finite element simulation. We present results from tests conducted ...

2013

Processing and Consolidation of TaC/HfC Based Composites Using MoSi2 and Carbon Nanotubes

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Tantalum and hafnium carbides are classified as Ultra High Temperature Ceramics (UHTC) because of their extreme melting temperatures (above 3900 degrees C). Therefore, these materials can safely operate in the range of temperature that any other materials ...

Trans Tech Publications Ltd2013

Review of dynamic testing methods and results of rock materials in tension

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The purpose of this review is to discuss the development and the state-of-the-art in dynamic testing methods and dynamic behaviour of rock materials in tension. Loading techniques commonly used for intermediate and high strain rate testing are pneumatic-hy ...

CRC Press2013

Probing the microscopic strength of alumina reinforcements

Andreas Mortensen, Goran Zagar, Raphaël Charvet, Cyril Dénéréaz, Andreas Rossoll, Martin Guillermo Mueller, Václav Pejchal, Willy Dufour

By combining focused ion beam milling methods with microtesting techniques and finite element simulation we probe the strength of microscopic alumina phases that can be used as reinforcements in the production of metal matrix composite materials. We presen ...

2013

Failure analysis of edge flat-slab column connections with shear reinforcement

Aurelio Muttoni, Dan Vasile Bompa

Flat-slab column connections are susceptible to brittle failure, which lead to the necessity of improving ductility and ultimate strength. In case of edge connections, the behaviour at ultimate state is highly influenced by nonsymmetrical distribution of s ...

fib Symposium Tel-Aviv 20132013

Influence of the load history on the edge strength of glass with arrised and ground edge finishing

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The edge strength of glass is affected by the load history. To quantify this effect, 12 series of glass specimens were subjected to either linearly increased (reference value), constant or cyclic loading. For constant loading the experimental values could ...

Elsevier2013

Fracture of convoluted and lamellar α2 + γ TiAl alloys

Andreas Mortensen, Frédéric Diologent, Nicolas Vincent Barbi

Fracture toughness tests are conducted at room temperature and 923 K (650 degrees C) on SENB (Single Edge Notched Bend) specimens of three different (alpha(2) + gamma ) TiAl-based alloys. One alloy is a conventional near fully lamellar Ti-45Al-2Mn-2Nb + 0. ...

Elsevier2012

The effect of processing conditions on the microstructure and impact behavior of melt infiltrated Al/SiCp composites

Mehdi Mazaheri

In the current research, pressureless melt infiltration (PM!) was applied to study the effect of different processing conditions on the final properties of Al/SiC composites, fabricated through the infiltration of aluminum melt into SiC particulates porous ...

Elsevier2011

Contribution to the Production and Characterization of W-Y, W-Y2O3 and W-TiC Materials for Fusion Reactors

Lyubomira Veleva

This PhD Thesis work was aimed at investigating the potentiality of tungsten-base materials as structural materials for the future thermonuclear fusion reactors in attempting to develop reduced activation tungsten-base materials with high strength and suff ...

EPFL2011

Silicon Flexures for the Sugar-Cube Delta Robot

Simon Nessim Henein

Fracture tests have been performed on 333 flexure hinges of various shapes machined in monocrystalline silicon by Deep Reactive Ion Etching. The results show the significant effects of stress concentration, crystalline orientation and surface treatments on ...

2011

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