Publications related to Residual stress characterization in a single fibre composite specimen by using FBG sensor and the OLCR technique

3D laser shock peening - A new method for improving fatigue properties of selective laser melted parts

Roland Logé, Christian Leinenbach, Nikola Kalentics, Manuel Ortega Varela De Seijas

Although Selective Laser Melting (SLM) currently revolutionizes the way parts are being manufactured, certain process inherent limitations such as accumulation of residual stresses and increased porosity content can lead to a decrease in fatigue life of pr ...

ELSEVIER2020

Flexopiezoelectricity at ferroelastic domain walls in WO3 films

Kanghyun Chu

The emergence of a domain wall property that is forbidden by symmetry in bulk can offer unforeseen opportunities for nanoscale low-dimensional functionalities in ferroic materials. Here, we report that the piezoelectric response is greatly enhanced in the ...

2020

Improving delamination resistance through tailored defects

John Botsis

Delamination is a well-known damage mode exhibited by laminated composites which has been extensively studied in unidirectional laminates (UD). In this work, a novel strategy consisting of the introduction of a small interlaminar defect to enhance the frac ...

2020

Finite element modeling of dynamic frictional rupture with rate and state friction

Jean-François Molinari, Fabian Barras, Roozbeh Rezakhani, Michael Ludovic Brun

Numerous laboratory experiments have demonstrated the dependence of the friction coefficient on the interfacial slip rate and the contact history, a behavior generically called rate and state friction. Although numerical models have been widely used for an ...

PERGAMON-ELSEVIER SCIENCE LTD2020

Yielding of a quartz sand from saturated to dry state

Alessio Ferrari

The paper presents the results of an experimental work where we analyse the behaviour of an unsaturated quartz sand in a wide range of degree of saturation (from saturated to dry state). The possibility of anticipating the hydro-mechanical behaviour of the ...

E D P SCIENCES2020

Crack front deformation during dynamic heterogeneous fracture

Jean-François Molinari, Thibault Didier Roch

The standard method to study crack front deformation is based on the perturbation approach proposed by Rice , in which the crack front is represented as a line. However, recent studies have shown the importance of the fracture process zone for dynamic hete ...

2020

Two-dimensional crack growth in FRP laminates and sandwich panels

Aida Cameselle Molares

Fiber-reinforced polymer (FRP) composite materials are currently being selected for the design of lightweight and efficient structural members in a wide number of engineering applications. Sandwich panels with glass fiber-reinforced polymer (GFRP) face she ...

EPFL2019

Load history effects in fibre-reinforced polymer composite materials

Abdolvahid Movahedirad

Today, it is widely accepted that fatigue is one of the most common failure mechanisms in structural components, and pure static failure is rarely observed. Engineering structures are subjected to complex mechanical fatigue loading histories, which cause d ...

EPFL2019

The mechanics of crack-tip dislocation emission and twinning

Predrag Andric

Dislocation emission from a crack tip is a necessary mechanism for crack tip blunting and toughening. A material is intrinsically ductile under Mode I loading when the critical stress intensity

K_{Ie}

for dislocation emission is lower than the critical s ...

EPFL2019

Propagation of a planar hydraulic fracture perpendicular to the isotropy plane of a transversely isotropic material

Brice Tanguy Alphonse Lecampion, Haseeb Zia, Fatima-Ezzahra Moukhtari

We investigate the case of a hydraulic fracture (HF) propagating perpendicular to the isotropy plane of a transversely isotropic material: a relevant configuration for the growth of HFs in sedimentary rocks where fractures are propagating vertically across ...

53rd US Rock Mechanics/Geomechanics Symposium2019

Residual stress characterization in a single fibre composite specimen by using FBG sensor and the OLCR technique

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3D laser shock peening - A new method for improving fatigue properties of selective laser melted parts

Flexopiezoelectricity at ferroelastic domain walls in WO3 films

Improving delamination resistance through tailored defects

Finite element modeling of dynamic frictional rupture with rate and state friction

Yielding of a quartz sand from saturated to dry state

Crack front deformation during dynamic heterogeneous fracture

Two-dimensional crack growth in FRP laminates and sandwich panels

Load history effects in fibre-reinforced polymer composite materials

The mechanics of crack-tip dislocation emission and twinning

Propagation of a planar hydraulic fracture perpendicular to the isotropy plane of a transversely isotropic material

Improving delamination resistance through tailored defects

Flexopiezoelectricity at ferroelastic domain walls in WO3 films

Yielding of a quartz sand from saturated to dry state

Two-dimensional crack growth in FRP laminates and sandwich panels

Finite element modeling of dynamic frictional rupture with rate and state friction

The mechanics of crack-tip dislocation emission and twinning

Propagation of a planar hydraulic fracture perpendicular to the isotropy plane of a transversely isotropic material

Load history effects in fibre-reinforced polymer composite materials

3D laser shock peening - A new method for improving fatigue properties of selective laser melted parts

Crack front deformation during dynamic heterogeneous fracture