Publications

Structural mechanics

Development of a Homogenized Thermomechanical Model for the Optimized Design of Fiber Optic Gyroscopes

Fiber Optic Gyroscopes (FOG) are high-precision measurement devices that measure the rotation rate of a fiber optic coil along its axis thanks to the Sagnac effect. Two counterpropagative waves are sent into an optical fiber coil. The…

Pierre Busnel, Jeremie Pillon, François Louf, Maxime Rattier, Pierre-Alain Boucard

COMPLAS 2023 - XVII International Conference on Computational Plasticity - 2023

Materials

Stability of the critical distance method for fretting cracking prediction: influence of microstructure and crack nucleation size

To provide lifetime predictions of metal pieces under fretting-fatigue loading, the crack initiation process has to be understood. However, there is no consensus in the literature over the crack nucleation length. The objective of this study is to…

Hugo Lannay, Siegfried Fouvry, Bruno Berthel, Camille Gandiolle, Jan Neggers, Gabriel Paramucchio

Tribology International - 2023

Engineering Sciences

Effect of near-fault directivity pulses on ground-motion intensity measure correlations from the NGA-West2 data set

This article investigates the correlation coefficients of ground-motion intensity measures for ground motions containing near-fault directivity velocity pulses. These correlation coefficients are necessary to quantify conditional multivariate…

Karim Tarbali, Brendon Bradley, Jack Baker

Earthquake Spectra - 2023

Geophysics

Damage evolution in coal under different loading modes using advanced digital volume correlation based on X-ray computed tomography

To investigate the damage development of coal under different loading conditions, in-situ tests in uniaxial and triaxial compression were carried out. Advanced digital volume correlation based on finite element discretization was utilized to…

Haizhou Liu, Lingtao Mao, Yang Ju, François Hild

Energy - 2023

Electric power

Multimaterial Filtering applied to Topology Optimization of a Permanent Magnet Synchronous Machine

This paper proposes a generalized multi-material filtering formalism in density-based topology optimization. This work’s novelty is the consideration of the periodic and anti-periodic boundary conditions commonly used to simulate electrical machines…

Théodore Cherrière, S Hlioui, François Louf, Luc Laurent

17th International Workshop on Optimization and Inverse Problems in Electromagnetism 2023 - 2023

Engineering Sciences

Shear loading dominated damage mechanisms and strain localization studied by in situ 3D laminography imaging and Digital Volume Correlation for AA2198-T8

Damage and strain changes during shear dominated loading were assessed in situ via synchrotron laminography. In combination with digital volume correlation (DVC), local strain fields inside the material were determined thanks to the contrast…

Ante Buljac, Xiang Kong, Lukas Helfen, François Hild, Thilo F. Morgeneyer

Mechanics of Materials - 2023

Engineering Sciences

Estimation of laser-induced damage depth from surface image features

In laser damage experiments, damage initiation and growth are typically monitored by imaging the surface of the tested fused silica sample, ignoring their bulk morphology. The depth of a damage site in fused silica optics is considered to be…

Guillaume Hallo, Yanis Abdelmoumni-Prunes, Sylvain Grosjean, Jérôme Néauport, Chloé Lacombe, Laurent Lamaignère, François Hild

Applied optics - 2023

Engineering Sciences

Proper Generalized Decomposition stereocorrelation to measure kinematic fields for high speed impact on laminated glass

Stereocorrelation (SC) is a powerful tool for measuring 3D surface deformations in mechanical tests. However, it may suffer from convergence issues for large displacements or speckle changes. A global space-time formulation is proposed herein using…

Xuyang Chang, Corentin Le Gourriérec, François Hild, Léonard Turpin, Myriam Berny, Stéphane Roux

Computer Methods in Applied Mechanics and Engineering - 2023

Mechanical engineering

Damage Detection in a Polymer Matrix Composite from 4D Displacement Field Measurements

Standard Digital Volume Correlation (DVC) approaches enable quantitative analyses of specimen deformation to be performed by measuring displacement fields between discrete states. Such frameworks are thus limited by the number of scans (due to…

Ana Mandić, Viktor Kosin, Clément Jailin, Zvonimir Tomičević, Benjamin Smaniotto, François Hild

Materials - 2023

Neural and Evolutionary Computing

A neural network-based data-driven local modeling of spotwelded plates under impact

Solving large structural problems with multiple complex localized behaviors is extremely chal- lenging. To address this difficulty, both intrusive and non-intrusive Domain Decomposition Methods (DDM) have been developed in the past, where the…

Afsal Pulikkathodi, Elisabeth Longatte-Lacazedieu, Ludovic Chamoin, Juan-Pedro Berro Ramirez, Laurent Rota, Malek Zarroug

Mechanics & Industry - 2023