Publications related to Roughness Evolution Induced by Third-Body Wear

Fractal surfaces in adhesive wear processes.

Jean-François Molinari, Enrico Milanese, Ramin Aghababaei, Tobias Brink

Wear of materials plays a key role in the durability of manifactured objects and it has thus an economical importance in our society. In spite of the efforts, a unified picture of the underlying physics of the phenomenon is still far from being reached, be ...

2018

Continuum versus discrete approach in modeling of wear processes

Enrico Milanese, Lucas Henri Galilée Frérot

Wear of materials is a very complex phenomenon due to its tight correlation with all the other phenomena that take place at the interface of two bodies interacting with one another, like friction, contact and lubrication. When two opposing surfaces slide o ...

2018

A mechanistic understanding of the wear coefficient: From single to multiple asperities contact

Jean-François Molinari, Ramin Aghababaei, Lucas Henri Galilée Frérot

Sliding contact between solids leads to material detaching from their surfaces in the form of debris particles, a process known as wear. According to the well-known Archard wear model, the wear volume (i.e. the volume of detached particles) is proportional ...

2018

Comparison of permutationally invariant polynomials, neural networks, and Gaussian approximation potentials in representing water interactions through many-body expansions

Michele Ceriotti, Giulio Imbalzano

The accurate representation of multidimensional potential energy surfaces is a necessary requirement for realistic computer simulations of molecular systems. The continued increase in computer power accompanied by advances in correlated electronic structur ...

2018

Pattern formation in thin liquid films: from coating-flow instabilities to microfluidic droplets

Gioele Mariano Nicolò Balestra

Nature and technical applications abound with thin viscous flows, ranging from the lava flow on volcanoes to the lubricating layer around confined bubbles in the microchannels of Lab-on-a-Chip devices. Countless are the examples where coating flows arise i ...

EPFL2018

STEP-NC compliant process planning of additive manufacturing: remanufacturing

Ian Anthony Stroud, Jumyung Um

Additive manufacturing is becoming one of the key methods for reproducing repair sections in remanufacturing processes. The major advantage of using additive processes is to minimize production time and waste. However, the surface quality and shape accurac ...

Springer London Ltd2017

Micromechanical Origins of Adhesive Wear Mechanisms: From Asperity Smoothing to Debris Creation

Jean-François Molinari, Ramin Aghababaei, Derek Warner

The adhesive wear process consists of several physical phenomena including plasticity and fracture which occur at different length and time scales. Despite the critical importance of the adhesive wear process in all engineering applications, it is still de ...

2017

Characterization of Grey Cast Iron-Steel Tribo-system under Starved Lubrication Conditions

Fatemeh Saeidi

Reducing friction and wear is essential for building efficient systems with low energy consumption and a long lifetime. Surface texturing is one of the methods to reduce friction and wear, especially in oil-lubricated systems. However, there is still a lac ...

EPFL2016

Wear at the asperity level: An atomistic viewpoint

Jean-François Molinari, Ramin Aghababaei, Derek Warner

Tribological problems are particularly difficult to comprehend. Different physical mechanisms (including the environment, plastic deformation, third body interactions, phase transformations, recrystallization) interact at disparate length and time scales. ...

2015

Optimal polynomial blow up range for critical wave maps

Can Gao

We prove that the critical Wave Maps equation with target

S^2

and origin ℝ

^{2+1}

admits energy class blow up solutions of the form [ u(t, r) = Q(\lambda(t)r) + \epsilon(t, r) ] where

Q:ℝ²\rightarrow S^2

is the ground state harmonic map and $\lambda ...

EPFL2015

Roughness Evolution Induced by Third-Body Wear

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Fractal surfaces in adhesive wear processes.

Continuum versus discrete approach in modeling of wear processes

A mechanistic understanding of the wear coefficient: From single to multiple asperities contact

Comparison of permutationally invariant polynomials, neural networks, and Gaussian approximation potentials in representing water interactions through many-body expansions

Pattern formation in thin liquid films: from coating-flow instabilities to microfluidic droplets

STEP-NC compliant process planning of additive manufacturing: remanufacturing

Micromechanical Origins of Adhesive Wear Mechanisms: From Asperity Smoothing to Debris Creation

Characterization of Grey Cast Iron-Steel Tribo-system under Starved Lubrication Conditions

Wear at the asperity level: An atomistic viewpoint

Optimal polynomial blow up range for critical wave maps

Continuum versus discrete approach in modeling of wear processes

Fractal surfaces in adhesive wear processes.

A mechanistic understanding of the wear coefficient: From single to multiple asperities contact

Comparison of permutationally invariant polynomials, neural networks, and Gaussian approximation potentials in representing water interactions through many-body expansions

Pattern formation in thin liquid films: from coating-flow instabilities to microfluidic droplets

Wear at the asperity level: An atomistic viewpoint

STEP-NC compliant process planning of additive manufacturing: remanufacturing

Optimal polynomial blow up range for critical wave maps

Characterization of Grey Cast Iron-Steel Tribo-system under Starved Lubrication Conditions

Micromechanical Origins of Adhesive Wear Mechanisms: From Asperity Smoothing to Debris Creation