Publication
Breakdown of Reye's theory in nanoscale wear
Publications associées (34)
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Brice Tanguy Alphonse Lecampion, Andreas Möri, Carlo Peruzzo
Hydraulic fractures are driven by an internal fluid pressure exceeding the minimum compressive stress, propagating in a direction perpendicular to the latter. This class of tensile fractures has gained interest over the last fifty years due to the developm ...
2023Understanding the mechanisms of adhesive wear for heterogeneous materials through atomistic simulations
Jean-François Molinari, Antonio Joaquin Garcia Suarez, Sacha Zenon Wattel
When two rough surfaces slide against each other, two main behaviors can be observed at the asperity level: A ductile behavior where the asperities tend to smooth out or a brittle behavior where the asperities detach and form debris. Recently, a critical l ...
ELSEVIER2022Adhesive wear with a coarse-grained discrete element model
Jean-François Molinari, Son-Jonathan Pham-Ba
The use of molecular dynamics (MD) simulations has led to promising results to unravel the atomistic origins of adhesive wear, and in particular for the onset of wear at nanoscale surface asperities. However, MD simulations come with a high computational c ...
ELSEVIER SCIENCE SA2022Multi-scale modeling of aggregate interlock phenomena in concrete
In concrete structures, opened cracks contribute significantly to the transfer of shear and normal stresses through the contact forces occurring between fractured surfaces. Such contact forces are due to protruding asperities, engaged by interlocking and f ...
EPFL2021First principles study of the effect of hydrogen in austenitic stainless steels and high entropy alloys
Hydrogen (H) embrittlement in multicomponent austenitic alloys is a serious limitation to their application in many environments. Recent experiments show that the High-Entropy Alloy (HEA) CoCrFeMnNi absorbs more H than 304 Stainless Steel but is less prone ...
PERGAMON-ELSEVIER SCIENCE LTD2020First principles study of the effect of hydrogen in austenitic stainless steels and high entropy alloys
Hydrogen (H) embrittlement in multicomponent austenitic alloys is a serious limitation to their application in many environments. Recent experiments show that the High-Entropy Alloy (HEA) CoCrFeMnNi absorbs more H than 304 Stainless Steel but is less prone ...
2020Distributed Coupled Multiagent Stochastic Optimization
Ali H. Sayed, Sulaiman A S A E Alghunaim
This paper develops an effective distributed strategy for the solution of constrained multiagent stochastic optimization problems with coupled parameters across the agents. In this formulation, each agent is influenced by only a subset of the entries of a ...
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2020Time-lapse reconstruction of the fracture front from diffracted waves arrivals in laboratory hydraulic fracture experiments
Brice Tanguy Alphonse Lecampion, Dong Liu, Thomas Emmanuel Blum
4-D acoustic imaging via an array of 32 sources/32 receivers is used to monitor hydraulic fracture (HF) propagating in a 250 mm cubic specimen under a true-triaxial state of stress. We present a method based on the arrivals of diffracted waves to reconstru ...
2020Statistical Model of Measurement Noise in Real-World PMU-based Acquisitions
Mario Paolone, Asja Derviskadic, Guglielmo Frigo, Alexandre Bach
In this paper, we present a processing technique to determine the statistical distribution of additive measurement noise in real-world acquisitions, with specific reference to Phasor Measurement Unit (PMU) applications in Active Distribution Networks (ADNs ...
IEEE2019Continuum 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