Olivier CASTELNAU | Processes and Engineering in Mechanics and Materials

I am studying the mechanical behaviour of polycrystals, from both experimental and theoretical points of view, with emphasis on the link between microstructure, effective behaviour, and deformation mechanisms at the local (typically micrometric) scale. I work in particular on the mechanical interpretation of neutrons and X-ray diffraction techniques, that allow direct measurement of the elastic strain distribution in deformed materials. At present, I am strongly involved in the stress field analysis at a sub-micron scale, measured by Laue microdiffraction. Use of micromechanical models is necessary for the interpretation of diffraction data. I use and develop mean-field homogenization methods, in particular those based on the self consistent scheme, and their extensions to nonlinear behaviours such as viscoplasticity and elastoviscoplasticity. The reliability of these approaches can now be evaluated by means of systematic comparisons with full-field reference solutions (such as obtained by a FFT technique). Evaluation of intraphase heterogeneities and associated microstructure evolution (hardening, lattice rotation, recrystallization) was of special interest during the last years.

Investigated materials include pure metals and metallic alloys (steels, copper, zirconium alloys, …), ceramics (ex. zirconia), nanomaterials (thin films), architectured materials, as well as geomaterials (ice, minerals, ..).

Current research projects:

ERC FASTMAT concerning the study of Very High Cycle Fatigue (VHCF) of materials. We are developping an in situ time resolved (10ns) diffraction experiment at the beamline DiffAbs of the french synchrotron SOLEIL, that we interpret using micromechanical modeling approaches.
ANR-DFG HoTMiX to investigate the micromechanical behavior of nanostructured oxydes at very temperatures by using in situ synchrotron experiments.
ANR ForgeLaser in which we perform a mechanical analysis (modelling + experiments) of Laser shock used to generate residual stresses in metallic alloys.
ITN CESAREF , in particular PhD7 : stress field in refractory ceramics.
ERC TIMEMAN (collaborator)

Main responsabilities:

director of Fédération Francilienne de Mécanique - matériaux, structures, procédés (FR2609)
chair of peer review committee PRC3 of the synchrotron SOLEIL

Main publications

(If you don't have access to the journal, please contact me by email and I will send you the pdf of the paper)

2025

M. Tannous, C. Ghnatios, O. Castelnau, P. Ponte Castañeda, F. Chinesta, Machine learning-boosted nonlinear homogenization, Mech. Materials, vol. 201 (2025), 105229 (link)
T. Ors, N. Gey, M. Huger, O. castelnau, R. Guinebretière, Strains, stresses and microcracks in pure zirconia polycrystals, Mater. Charact., in press.

2024

Weidner T., Mussi A., Castelnau O., Kronenberg A., Law R., Cordier P., Evidence of Dislocation Mixed Climb in Quartz From the Main Central and Moine Thrusts: An Electron Tomography Study, J. Geophys. Res.: Solid Earth, 129 number 7, 2024. (link)(hal)
A. Rondepierre, Y. Rouchausse, L. Videau, R. Fabbro, O. Casagrande, Y. Sano, O. Castelnau, and L. Berthe, New advancements for laser-matter interaction applied to laser shock peening, Proc. SPIE 12939, High-Power Laser Ablation VIII, 129390K (11 April 2024) (link)
R.R.P Purushottam Raj Purohit, D. Fowan, S. Arnaud, N. Blanc, J.S. Micha, R. Guinebretière, O. Castelnau, Laue microdiffraction on polycrystalline samples above 1500 K achieved with the QMAX-microLaue furnace, J. Appl. Cryst., 57 (2024), p. 470-480 (link)(hal)
V. Jacquemain, C. Cheuleu, N. Ranc, O. Castelnau, V. Michel, D. Vinci, V. Favier, C. Mocuta, D. Thiaudière, Investigation of the mechanical work during ultrasonic fatigue loading using pulsed time-resolved X-ray diffraction, J. Synchr. Rad., 31 (2024), p.1-11 (link)(hal)

2023

E. E. Ledoux, M. Saki, J. P. Gay, M. Krug, O. Castelnau, W.-Y. Zhou, J. S. Zhang, J. Chantel, N. Hilairet, M. Bykov, E. Bykova, G. Aprilis, V. Svitlyk, G. Garbarino, C. Sanchez-Valle, C. Thomas, S. Speziale, S. Merkel, Deformation mechanisms, microstructures, and seismic anisotropy of wadsleyite in the Earth's transition zone, Geochemistry, Geophysics, Geosystems, 24 (2023), 11, p. e2023GC011026 (link)(hal).
L. Lapostolle, L. Morin, K. Derrien, L. Berthe, O. Castelnau, Exact expressions of the uniaxial perfectly elasto-plastic stress wave and induced mechanical fields in the case of a finite impact: application to Laser Shock Peening, Comptes Rendus Mécanique, Tome 351 (2023), pp. 459-484. (link)(hal)
L. Lapostolle, L. Morin, K. Derrien, L. Berthe, O. Castelnau, Modeling and simulation of laser shock waves in elasto-plastic polycrystalline microstructures, J. Mech. Phys. Solids 176 (2023) 105310 (link)(hal)
P. Cordier, K. Gouriet, T. Weidner, J. Van Orman, O. Castelnau, J. M. Jackson, P. Carrez, Periclase deforms more slowly than bridgmanite under mantle conditions, Nature 613, 303–307 (2023) (link)(hal)
L. Lapostolle, L. Morin, K. Derrien, L. Berthe, O. Castelnau, Fast numerical estimation of residual stresses induced by laser shock peening, Eur. J. Mech. / A Solids 97 (2023) 104844 (link)(hal)

2022

R.R.P. Purushottam Raj Purohit, D. Pepin Fowan, E. Thune, S. Arnaud, G. Chahine, N. Blanc, O. Castelnau, R. Guinebretière, Phase transition and twinning in polycrystals probed by in situ high temperature 3D reciprocal space mapping, Appl. Phys. Lett., 121, 181901 (2022). (link)(hal)
R. Guinebretière, T. Ors, V. Michel, E. Thune, M. Huger, S. Arnaud, N. Blanc, N. Boudet, O. Castelnau, Coupling between elastic strains and phase transition in dense pure zirconia polycrystals, Phys. Rev. Mater. 6, 013602 (2022) (doi)(hal)
L. Lapostolle, K. Derrien, L. Morin, L. Berthe, O. Castelnau, Modeling and simulation of laser shock waves in elasto-plastic 1D layered specimens, Int. J. Sol. Struct. 239–240 (2022) 111422 (doi)(hal)
R. Raj Purohit Purushottam Raj Purohit, S. Tardif, O. Castelnau, J. Eymery, R. Guinebretière, O. Robach,T. Ors, J.-S. Micha, LaueNN: neural-network-based hkl recognition of Laue spots and its application to polycrystalline materials, J. Appl. Cryst. (2022). 55, 737–750 (doi)(hal)
A. Rondepierre, O. Cassagrande, Y. Rouchausse,O. Castelnau, L. Berthe, Development and optimization of Laser Shock Repeated Dense Peening (LSRDP) using most advanced laser architectures, Optics Express Vol. 30, No. 7 (2022), 10528-10546. (doi)(hal)

2021

T. De Terris, O. Castelnau, Z. Hadjem-Hamouche, H. Haddadi, V. Michel, P. Peyre, Analysis of As-Built Microstructures and Recrystallization Phenomena on Inconel 625 Alloy Obtained via Laser Powder Bed Fusion (L-PBF). Metals, 2021, 11, 619. (doi)(hal)
R. Purushottam Raj Purohit, T. Richeton, S. Berbenni, L. Germain, N. Gey, T. Connolley, O. Castelnau, Estimating single-crystal elastic constants of polycrystalline β metastable titanium alloy: A Bayesian inference analysis based on high energy X-ray diffraction and micromechanical modeling, Acta Mater., 208 (2021) 116762 (doi)(hal)
T. Ors, F. Gouraud, V. Michel, M. Huger, N. Gey, J-S. Micha, O. Castelnau, R. Guinebretière, Huge local elastic strains in bulk nanostructured pure zirconia materials, Mater. Sci. Engin.-A, 806 (2021) 140817. (doi)(hal)
A. Rondepierre, Y. Rouchausse, L. Videau, O. Casagrande, O. Castelnau, L. Berthe, Laser interaction in a water tank configuration: Higher confinement breakdown threshold and greater generated pressures for laser shock peening, J. Laser Appl. 33, 042022 (2021) (doi)(hal)
V. Jacquemain, N. Ranc, C. Cheuleu, V. Michel, V. Favier, O. Castelnau, D. Vinci, D. Thiaudiere, C. Mocuta, Estimation of stress in specimens loaded with ultrasonic fatigue machines, Int. J. Fatigue 153 (2021) 106474 (doi)(hal)
A. Rondepierre, S. Ünaldi, Y. Rouchausse, L. Videau, R. Fabbro, O. Casagrande, C. Simon-Boisson, H. Besaucéle, O. Castelnau, L. Berthe, Beam size dependency of a laser-induced plasma in confined regime: Shortening of the plasma release. Influence on pressure and thermal loading, Optics & Laser Technol. 135 (2021) 106689 (doi) (hal)
A. Mussi, J. Gallet, O. Castelnau, P. Cordier, Application of electron tomography of dislocations in beam-sensitive quartz to the determination of strain components, Tectonophysics 803 (2021) 228754 (doi)(hal)

2020

O. Castelnau, K. Derrien, S. Ritterbex, P. Carrez, P. Cordier, H. Moulinec, Multiscale Modelling of the effective viscoplastic behavior of Mg2SiO4 wadsleyite: bridging atomic and polycrystal scales, Comptes Rendus Mécanique, 348, p.827-847 (2020) (doi)(hal)
M.C. Sow, T. De Terris, O. Castelnau, Z. Hamouche, F. Coste, R. Fabbro, P. Peyre, Influence of beam diameter on Laser Powder Bed Fusion (L-PBF) process, Additive Manufacturing 36 (2020) 101532 (doi) (hal)
P. Bonnet, V.A. Yastrebov, P. Queutey, A. Leroyer, A. Mangeney, O. Castelnau, A. Sergeant, E. Stutzmann, J-P Montagner, Modelling capsizing icebergs in the open ocean, Geophys. J. Int., (2020) 223, p.1265-1287. (doi) (hal)
R. Guinebretière, S. Arnaud, N. Blanc, N. Boudet, E. Thune, D. Babonneau, O. Castelnau, Full reciprocal-space mapping up to 2000 K under controlled atmosphere: the multipurpose QMAX furnace, J. Appl. Cryst. (2020). 53, 650–661 (doi) (hal)

2019

T. Ors, N. Ranc, M. Pelerin, V. Michel, V. Favier, O. Castelnau, C. Mocuta, D. Thiaudière, Microsecond time-resolved X-ray diffraction for the investigation of fatigue behavior during ultrasonic fatigue loading, J. Synchr. Rad., 2019, 26 (5), pp.1660-1670. ⟨doi⟩ (hal)
Neil M. Ribe, R. Hielsche, O. Castelnau. An analytical finite-strain parametrization for texture evolution in deforming olivine polycrystals, Geophys. J. Int., 2019, 216, pp.486-514. ⟨doi⟩(hal)
T. Gu, J.-R. Medy, V. Klosek, O. Castelnau, S. Forest, E. Hervé-Luanco, F. Lecouturier–Dupouy, H. Proudhon, P.-O. Renault, L. Thilly, P. Villechaise, Multiscale modeling of the elasto-plastic behavior of architectured and nanostructured Cu-Nb composite wires and comparison with neutron diffraction experiments, Int. J. Plasticity., 2019, 122, pp. 1-30. ⟨doi⟩ (hal)
A. Sergeant, A. Mangeney, V. A. Yastrebov, F. Walter, J.-P. Montagner, O. Castelnau, E. Stutzmann, P. Bonnet, V. J.-L. Ralairisoa, S. Bevan, A. Luckman, Greenland ice sheet buoyancy-driven calving discharge using glacial earthquakes, Annals Glaciol., 2019, pp.1- 21. ⟨doi⟩ ( hal)
E. Plancher, P. Tajdary, T. Auger, O . Castelnau, V. Favier, D. Loisnard, J.-B. Marijon, C. Maurice, V. Michel, O. Robach, J. Stodolna, Validity of crystal plasticity models near grain boundaries: a contribution of elastic strain measurements at the micron scale, Journal of Materials Science, 2019, 71 (10), pp.3543-3551. (doi⟩ (hal)

2018

J. Hektor, J.-B. Marijon, M. Ristinmaa, S. A. Hall, H. Hallberg, S. Iyengar, J.-S.Micha, O. Robach, F. Grennerat, O. Castelnau, Evidence of 3D strain gradients associated with tin whisker growth, Scripta Mater. 144 (2018) 1–4. (doi) (hal)
A. Sergeant, V.A. Yastrebov, A. Mangeney, O. Castelnau, J.-P. Montagner, E. Stutzmann, Numerical modeling of iceberg capsizing responsible for glacial earthquakes. J. Geophys. Res.: Earth Surface, 123, 3013–3033 (2018) (doi) (hal)
T. Ors, J.-S. Micha, N. Gey, V. Michel, O. Castelnau. R. Guinebretiere, EBSD-assisted Laue microdiffraction for microstrain analysis, J. Appl. Cryst. 51, 5567, 2018. (doi)(hal)

2017

H. Hallberg, F. Adamski, S. Baïz, O. Castelnau, Microstructure and Property Modifications of Cold Rolled IF Steel by Local Laser Annealing, Metall. Mater. Trans. A 48 (2017) 10, 4786-4802 (doi)(hal)
D.K. Blackman D.E. Boyce O. Castelnau P.R. Dawson G. Laske, Effects of crystal preferred orientation on upper-mantle flow near plate boundaries: rheologic feedbacks and seismic anisotropy, Geophys. J. Int., 210 3, 1481-1493, 2017. (doi) (hal)
P. Peyre, M. Dal, S. Pouzet, O. Castelnau, Simplified numerical model for the laser metal deposition additive manufacturing process, J. Laser Applications 29, 022304 (2017). (doi) (hal)
T. Ors, F. Gouraud, R. Guinebretiere, M. Huger, V. Michel, O. Castelnau, Neutron diffraction measurements of residual stress distribution in large zirconia based refractory bricks produced by electro-fusion and casting, J. Eur. Ceramic Soc. 37 (2017) 2295-2302. (doi) (hal)
T. Gu, O. Castelnau, S. Forest, E. Herve-Luanco, F. Lecouturier, H. Proudhon, L. Thilly, Multiscale modeling of the elastic behavior of architectured and nanostructured Cu-Nb composite wires, Int. J. Solids Struct. 121 (2017) 148-162. (doi) (hal)
T. Gu, J.-R. Medy, F. Volpi, O. Castelnau, S. Forest, E. Herve-Luanco, F. Lecouturier, H. Proudhon, P.-O. Renault, L. Thilly, Multiscale modeling of the anisotropic electrical conductivity of architectured and nanostructured Cu-Nb composite wires and experimental comparison, Acta Mater., 141 (2017) 131-141. (doi)(hal)
F. G. Zhang, M. Bornert, J. Petit, O. Castelnau, Accuracy of stress measurement by Laue microdiffraction (Laue-DIC method): the influence of image noise, calibration errors and spot number, J. Synchrotron Rad. (2017), 24, 802-817. (doi) (hal)
E. Plancher, V. Favier, C. Maurice, E. Bosso, N. Rupin, J. Stodolna, D. Loisnard, J.-B. Marijon, J. Petit, J.-S. Micha, O. Robach, and O. Castelnau, Direct measurement of local constitutive relations, at the micrometre scale, in bulk metallic alloys, J. Appl. Cryst. (2017), 50, 940-948. (doi) (hal)

2016

S. Pouzet, P. Peyre, C. Gorny, O. Castelnau, T. Baudin, F. Brisset, C. Colin, P. Gadaud, Additive layer manufacturing of titanium matrix composites using the direct metal deposition laser process, Mater. Sci. Engin. A677 (2016), 171-181 (doi) (hal)
A. Sergeant, A. Mangeney, E. Stutzmann, J.-P. Montagner, F.Walter, L. Moretti, O. Castelnau, Complex force history of a calving-generated glacial earthquake derived from broadband seismic inversion, Geophys. Res. Lett., 43, 3, p.1055-1065, 2016. (doi) (hal). See the Research Spotlight in EOS here.
C. Bollinger, P. Raterron, O. Castelnau, F. Detrez and S. Merkel (2016) Textures in deforming forsterite aggregates up to 8 GPa and 1673 K, Phys. Chem. Min., 43, 409-417 (doi) (hal)
E. Plancher, J. Petit, C. Maurice, V. Favier, L. Saintoyant, D. Loisnard, N. Rupin, J.-B. Marijon, O. Ulrich, M. Bornert, J.-S. Micha, O. Robach, O. Castelnau , On the accuracy of elastic strain field measurements by Laue microdiffraction and high-resolution EBSD : a cross-validation experiment, Exp. Mech., 56, p.48349, 2016. (doi) (hal)

2015

T. Gu, E. Herve-Luanco, H. Proudhon, L. Thilly, J.-B. Dubois, F. Lecouturier, O. Castelnau, S. Forest, Modélisation multi-échelle du comportement électrique de nano-composites Cu-Nb, Matériaux & Techniques, 103, 3 (2015), p. 309. (doi) (hal)
N. J. Goulding, N. M. Ribe, O. Castelnau, A. M. Walker, J. Wookey, Analytical Parameterization of Self-Consistent Polycrystal Mechanics: Fast Calculation of Upper Mantle Anisotropy, Geophys. J. Int, 203, p.334-350, 2015. (doi) (hal)
Zhang, F.G., Castelnau, O., Bornert, M., Petit, J., Marijon, J.B., Plancher, E., Determination of deviatoric elastic strain and lattice orientation by applying digital image correlation to Laue microdiffraction images - the enhanced Laue-DIC method, J. Appl. Cryst., 48, p.1805-1817, 2015. (doi) (hal). See also the 'Scientific Commentary' on that work here.
J. Petit, O. Castelnau, M. Bornert, F. Zhang, F. Hofmann, A.M. Korsunsky, D. Faurie, C. Le Bourlot, J.S. Micha, O. Robach, O. Ulrich, Laue-DIC: a new method for improved stress field measurements at the micron scale, J. Synchr. Rad., 22, p.980-994, 2015. (doi) (hal). Supplementary material here.
F. Detrez, O. Castelnau, P. Cordier, S. Merkel, P. Raterron, Effective viscoplastic behavior of polycrystalline aggregates lacking four independent slip systems inferred from homogenization methods; application to olivine. J. Mech. Phys. Solids, 83, p. 199-220, 2015. (doi) (hal)
Wauthier-Monnin, A., Chauveau, T., Castelnau, O., Réglé, H., Bacroix, B., The evolution with strain of the stored energy in different texture components of cold-rolled if steel revealed by high resolution X-ray diffraction, Mater. Characterization, 104, pp. 31-41, 2015. (doi) (hal)
D. Faurie, P. Djemia, O. Castelnau, R. Brenner, L. Belliard, E. Le Bourhis, Ph Goudeau, P.-O. Renault, Peculiar effective elastic anisotropy of nanometric multilayers studied by surface Brillouin scattering, Superlattices and Microstructures, 88 p.551-560, 2015. (doi) (hal)

2014

M. Montagnat, O. Castelnau, P. D. Bons, S. H. Faria, O. Gagliardini, F. Gillet-Chaulet, F. Grennerat, A. Griera, R. A. Lebensohn, H. Moulinec, J. Roessiger, P. Suquet, Multiscale modeling of ice deformation behavior, J. Struct. Geology, 61, p.78-108, 2014. (doi) (hal)
P. Raterron, F. Detrez, O. Castelnau, C. Bollinger, P. Cordier, S. Merkel, Multiscale Modeling of Upper Mantle Plasticity: from Single-Crystal Rheology to Multiphase Aggregate Deformation, Phys. Earth Planet. Int., 228, 232-243, 2014. (doi) (hal)
O. Robach, C. Kirchlechner, J.S. Micha, O. Ulrich, X. Biquard, O. Geaymond, O. Castelnau, M. Bornert, J. Petit, S. Berveiller, O. Sicardy, J. Villanova, F. Rieutord, ”Chapter 5 : Laue microdiffraction at ESRF”, p 156-204, in Strain and dislocation gradients from diffraction, Eds: Barabash R.I., Ice G.E. ,”Imperial College Press” / ”World Scientific Publishing” (2014) (doi) (hal)
J-L Béchade, L. Toualbi, S. Bosonnet, O. Castelnau, Y. De Carlan, Macroscopic and microscopic determinations of residual stresses in thin Oxide Dispersion Strengthened steel tubes, Mater. Sci. Forum 768-769 p. 296-303, 2014. (doi) (hal)

2012

J. Petit, M. Bornert, F. Hofmann, O. Robach, J.S. Micha, O. Ulrich, C. Le Bourlot, D. Faurie, A.M. Korsunsky, O. Castelnau, Combining Laue microdiffraction and digital image correlation for improved measurements of the elastic strain field with micrometer spatial resolution, Procedia IUTAM 4, p. 133-143, 2012. Computational Methods for Microstructure-Property Relationships (doi) (hal)
P. Suquet, H. Moulinec, O. Castelnau, M. Montagnat, N. Lahellec, F. Grennerat, P. Duval, R. Brenner. Multiscale modeling of the mechanical behavior of polycrystalline ice under transient creep, Procedia IUTAM, 3, p. 64-78, 2012. (doi) (hal)
R. Masson, R. Brenner, O. Castelnau, Incremental homogenization approach for ageing viscoelastic polycrystals, C. R. Mécanique, 340, p378-386, 2012. (doi) (hal)
F. Grennerat, M. Montagnat, O. Castelnau, P. Vacher, H. Moulinec, P. Suquet, P. Duval, Intragranular strain field in columnar ice during transient creep, Acta Mater, 60, 8, 3655-3666, 2012. (doi) (hal)
C. Le Bourlot, P. Landois, S. Djaziri, P.-O. Renault, E. Le Bourhis, P. Goudeau, M. Pinault, M. Mayne-L’Hermite, B. Bacroix, D. Faurie, O. Castelnau, P. Launois, S. Rouzière, Synchrotron X-ray diffraction experiments with a prototype hybrid-pixel detector, J. App. Cryst., 45, 1, p.38-47, 2012 (doi) (hal)
Q.H. Vu, R. Brenner, O. Castelnau, H. Moulinec, P. Suquet, A self-consistent estimate for linear viscoelastic polycrystals with internal variables inferred from the collocation method, Model. Simul. Mater. Sci. Eng., 20, 2, p.024003, 2012 (doi) (hal)

2011

Q. H. Vu, R. Brenner, O. Castelnau, H. Moulinec, Effective behaviour of viscoelastic polycrystals and associated local fields inferred from homogenization : incremental collocation approach, Proc. Engin. 10 (2011) 177–182. (doi) (hal)
O. Castelnau, Mechanical behavior of polycrystalline materials, in: Mechanics of Nano-Objects, O. Thomas, A. Ponchet, S. Forest (editors), Presse des Mines, p301--321, 2011 (ISBN : 978-2-911256-67-7) (link) (hal)
E. Le Bourhis, D. Faurie, P. O. Renault, G. Geandier, D. Thiaudière, O. Castelnau, and P. Goudeau, X-ray elastic response of metallic thin film supported by polyimide substrates, J. Strain Analysis, 46, p.639--649, 2011 (doi)
D. Faurie, P.-O. Renault, E. Le Bourhis, T. Chauveau, O. Castelnau, Ph. Goudeau, X-ray strain analysis of {111} fiber-textured thin films regardless of grain-interaction models, J. Appl. Cryst., 44, 409–413, 2011 (doi) (hal)
Lebensohn R.A., P. Ponte Castañeda, R. Brenner, O. Castelnau, Full-field vs. Homogenization methods to predict microstructure-property relations for polycrystalline materials, Chap. 11, p.393-442, Ed. S. Ghosh and D. Dimiduk, Springer, 2011 (doi 10.1007/978-1-4419-0643-4). (link) (hal)

2010

G. Geandier, D. Thiaudière, R. N. Randriamazaoro, R. Chiron, S. Djaziri, B. Lamongie, Y. Diot, E. Le Bourhis, P. O. Renault, P. Goudeau, A. Bouaffad, O. Castelnau, D. Faurie, and F. Hild, Development of a synchrotron biaxial tensile device for in situ characterization of thin films mechanical response, Rev. Sci. Instrum. 81, 103903 (2010) (doi) (hal)
O. Castelnau, P. Cordier, R.A. Lebensohn, S. Merkel, P. Raterron, Microstructures and rheology of the Earth’s upper mantle inferred from a multiscale approach, C. R. Physique 11, (2010) 304–315 (doi) (hal)
D. Faurie, P. Djemia, E. Le Bourhis, P.-O. Renault, Y. Roussigné, S.M. Chérif, R. Brenner, O. Castelnau, G. Patriarche, Ph. Goudeau, Elastic anisotropy of polycrystalline Au films: Modelling and respective contributions of X-ray diffraction, nanoindentation and Brillouin light scattering, Acta Mater. 58 (2010) 4998–5008 (doi) (hal)
G. Geandier, P.-O. Renault, E. Le Bourhis, Ph. Goudeau, D. Faurie, C. Le Bourlot, Ph. Djémia, O. Castelnau, S. M. Chérif, Elastic-strain distribution in metallic film-polymer substrate composites, Appl. Phys. Letters 96, 2010 (doi) (hal)
S. Djaziri, D. Thiaudière, G. Geandier, P.-O. Renault, E. Le Bourhis, P. Goudeau, O. Castelnau, D. Faurie, Controlled biaxial deformation of nanostructured W/Cu thin films studied by X-ray diffraction, Surf. Coat. technol. 205 (2010) 1420–1425 (doi) (hal)
Lebensohn R.A., C.S. Hartley, C.N. Tomé, O. Castelnau, Modelling the mechanical response of polycrystals deforming by climb and glide, Phil. Mag., 90, 5, p.567–583, 2010 (doi) (hal)
S. Djaziri, D. Thiaudière, G. Geandier, P.-O. Renault, E. Le Bourhis, P. Goudeau, R.N. Randriamazaoro, R. Chiron, O. Castelnau, D. Faurie, F. Hild, Mechanical characterization of nanostructured thin films at different scales, EPJ Web of Conferences 6, 26003 (2010) (doi)
F. Grennerat, M. Montagnat, O. Castelnau, P. Vacher, P. Duval, Intragranular strain field in columnar ice during transient creep regime and relation with the local microstructure, EPJ Web of Conferences 6, 31001 (2010) (doi)
G. Geandier, D. Faurie, P.-O. Renault, C. Le Bourlot, P. Djemia, O. Castelnau, S. M. Chérif, E. Le Bourhis, Ph. Goudeau, X-ray strain analysis in thin films enhanced by 2D detection, EPJ Web of Conferences 6, 26008 (2010) (doi)

2009

Geandier G., L. Gélébart, O. Castelnau, E. Le Bourhis, P.-O. Renault, Ph. Goudeau, D. Thiaudière, Micromechanical modeling of the Elastic Behavior of Multilayer Thin Films; Comparison with in situ data from X-Ray Diffraction. IUTAM Symp. on Modelling Nanomaterials and Nanosystems, IUTAM Book Series (Springer), Eds. R. Pyrz, J.C. Rauhe, p.99-108, 2009 (doi)
Brenner R., R.L. Lebensohn, O. Castelnau, Elastic anisotropy and yield surface estimates of polycrystals, Int. J. Solids. Struct., 46, p.3018–3026, 2009 (doi)
Castelnau, O., D. K. Blackman, and T. W. Becker, Numerical simulations of texture development and associated rheological anisotropy in regions of complex mantle flow, Geophys. Res. Lett., 36, L12304, doi:10.1029/2009GL038027, 2009 (doi)
Faurie D., O. Castelnau, R. Brenner, P.O. Renault, E. Le Bourhis, P. Goudeau, In situ diffraction strain analysis of elastically deformed polycrystalline thin films, and micromechanical interpretation, J. Appl. Cryst., 42, p.1073-1084, 2009 (doi)
Zhu K.Y., B. Bacroix, T. Chauveau, D. Chaubet, O. Castelnau, Texture evolution and associated nucleation and growth mechanisms during annealing of a Zr alloy, Met. Mater. Trans., 40A, 2423-2434, 2009 (doi)

2008

Castelnau O., D. K. Blackman, R. A. Lebensohn, P. Ponte Castañeda, Micromechanical modeling of the viscoplastic behavior of olivine, J. Geophys. Res., 113, B09202, doi:10.1029/2007JB005444, 2008 (doi)
Castelnau O., P. Duval, M. Montagnat, R. Brenner, Elastoviscoplastic micromechanical Modelling of the Transient Creep of Ice, J. Geophys. Res., 113, B11203, doi:10.1029/2008JB005751, 2008 (doi)
Lebensohn R.A., R. Brenner, O. Castelnau, A.D. Rollett, Orientation image-based micromechanical modelling of subgrain texture evolution in polycrystalline copper, Acta Mater., 56, p. 3914-3926, 2008 (doi)
Castelnau O., R.A. Lebensohn, P. Ponte Castañeda, D.K. Blackman, Earth Mantle Rheology inferred from Homogenization Theories, Multi-scale modeling of heterogeneous materials, Chap. 4, p.55--70, Ed. O. Cazacu & F. Darve, John Wiley and Sons, 2008 (link)

2007

Ungàr T., O. Castelnau, G. Ribàrik, M. Drakopoulos, J.L. Béchade, T. Chauveau, A. Snigirev, I. Snigireva, C. Schroer, B. Bacroix, Grain to grain activity in cold rolled Zr determined by X-ray microdiffraction line profile analysis, Acta Mater., 55, p.1117-1127, 2007 (doi)
Castelnau O., G. Geandier, P.O. Renault, P. Goudeau, E. Le Bourhis, Characterization and modelling of the elastic properties of nano-structured W/Cu multilayers, Thin Solid Films, 516, 320--324, 2007 (doi)
Zhu K.Y., B. Bacroix, T. Chauveau, D. Chaubet, O. Castelnau, Mechanism of texture evolution during primary recrystallization and grain growth in a Zr-2Hf alloy, Mater. Sci. Forum, 550, 545-550, 2007 (ldoi)
Bacroix B., R. Brenner, K. Zhu, H. Réglé, A. Wauthier, D. Chaubet, O. Castelnau, Relation between initial texture and microstructure and nucleation and growth mechanisms in metals, Mater. Sci. Forum, 558--559, 45--52, 2007 (doi).

2006

Faurie D., O. Castelnau, P.O. Renault, G. Patriarche, R. Brenner, E. Le Bourhis, P. Goudeau, Elastic properties of polycrystalline Gold thin films: mechanical modeling and X-Ray Diffraction experiments, Surface and Coatings Technology, 201, (2006), 4300-4304 (doi)
Faurie D., Renault P.O., Le Bourhis E., Goudeau P., Castelnau O., Brenner R., Patriarche G., Elastic behavior of polycrystalline thin film infered from in-situ micromechanical testing and modeling, Appl. Phys. Lett., 89, 061911, 2006 (doi)
Castelnau O., R. Brenner, R.A. Lebensohn, The effect of strain heterogeneity on the work-hardening of polycrystals predicted by mean-field approaches, Acta. Mater., 54, 2745-2756, 2006 (doi)
Bretheau T., O. Castelnau, Les contraintes résiduelles : d'où viennent-elles ? Comment les caractériser ?, Rayons X et Matière (RX2006), Chap. 5 (p. 123-154), Ed. R. Guinebretière, P. Goudeau, Hermès, 2006 (link)

2005

Lebensohn R.A., O. Castelnau, R. Brenner, P. Gilormini, Study of the antiplane deformation of linear 2-D polycrystals with different microstrutures, Int. J. Solids Struct. 42, p.5441-5459, 2005 (doi)
Gillet-Chaulet F., O. Gagliardini, J. Meyssonnier, M. Montagnat, O. Castelnau, A user-friendly anisotropic flow law for ice sheet modelling, J. Glaciol., 51, 172, p.3-14, 2005 (doi)

2004

Brenner R., O. Castelnau, B. Bacroix, Potentiality of mean-field approches for recrystallization : characterization of the deformed state of polycrystals, Mater. Sci. Forum, 467-470, p.33-38, 2004 (doi).
Brenner R., O. Castelnau, L. Badéa, Mechanical field fluctuations in polycrystals estimated by homogenization techniques, Proc. Roy. Soc. London A460, 2052, p.3589-3612, 2004 (doi)

2003

Brenner R., Castelnau O., Gilormini P., The modified affine homogenisation scheme for nonlinear composites : comparison with variational bounds and estimates, J. Phys. IV France105, 107-113, 2003 (doi)

2002

Letouzé N., R. Brenner, O. Castelnau, J.L. Béchade, M.H. Mathon, Residual strain distribution in zircaloy-4 measured by neutron diffraction and extimated by homogenization techniques, Scripta Mater. 47, p. 595-599, 2002 (doi)
Letouzé N., R. Brenner, J.L. Béchade, O. Castelnau, M.H. Mathon, B. Bacroix, Analyse par diffraction des neutrons des déformations résiduelles dans un alliage de zirconium après un chargement thermomécanique, J. Phys. IV France 12, Pr6, 125-136, 2002 (doi)
Brenner R., J.L. Béchade, O. Castelnau, B. Bacroix, Thermal creep of Zr-Nb1%-O alloys : experimental analysis and micromechanical modelling, J. Nucl. Mater., 305, 175-186, 2002 (doi)
Brenner R., R. Masson, O. Castelnau, A. Zaoui, A quasi-elastic affine formulation for the homogenised behaviour of nonlinear viscoelastic polycrystals and composites, Eur. J. Mech. A, 21, 943-960, 2002 (doi)
Letouzé N., R. Brenner, O. Castelnau, J.L. Béchade, Distribution of residual strain in polycrystals : analysis by diffraction and homogenisation techniques, Mater. Sci. Forum 404-407, p. 735-740, 2002 (doi)

2001

Castelnau O., H. Francillette, B. Bacroix, R. A. Lebensohn, Texture dependent plastic behavior of Zr 702 at large strain, J. Nuclear Mater., 297, p.14-26, 2001 (doi)
Castelnau O., M. Drakopoulos, C. Schroer, I. Snigireva, A. Snigirev, T. Ungar, Dislocation density analysis in single grains of steel by X-ray scanning microdiffraction, Nucl. Instr. and Meth. A, 467-468, P. 1245-1248, 2001 (doi)
Gilormini P., R. Brenner, O. Castelnau, A similarity between the classical and the modified secant extensions of the self-consistent model, C. R. Acad. Sci. Paris, t.329, Série IIb, p. 523-527, 2001 (doi)
Brenner R., O. Castelnau, P. Gilormini, A modified affine theory for the overall properties of nonlinear composites, C. R. Acad. Sci. Paris, t.329, Série IIb, p. 649-654, 2001 (doi)

2000

Castelnau O., T. Chauveau, M. Drakopoulos, A. Snigirev, I. Snigireva, C. Schroer, T. Ungar, Single grain analysis of dislocation density in cold rolled IF-Ti steel with a new high-resolution microdiffraction technique, Mater. Sci. Forum, 347-349, 297-302, 2000 (doi).
Castelnau O., T. Ungar, A. Miroux, T. Chauveau, B. Bacroix, Orientation dependent intragranular stored energy in polycrystalline Ti-IF steel, Mater. Sci. Forum, 321-324, p.720-725, 2000 (doi).
Castelnau O., T. Ungar, M. Drakopoulos, A. Snigirev, I. Snigireva, C. Schroer, T. Chauveau, B. Bacroix, Single grain analysis of strain hardening and internal stresses in cold rolled IF-Ti steel with a new high resolution microdiffraction technique, Key Engin. Mater.177-180, 147-152, 2000 (doi).
Brenner R., O. Castelnau, R. Masson, B. Bacroix, A. Zaoui, Self-consistent estimates for non-linear viscoelastic polycrystals : a simplified resolution of the affine formulation adapted to monotonic loading paths, Key Engin. Mater.177-180, 153-180, 2000 (doi).

1999

De La Chapelle S., H. Milsch, O. Castelnau, P. Duval, Compressive creep of ice containing a liquid intergranular phase: rate-controlling processes in the dislocation creep regime, Geophys. Res. Lett., 26, 2, 251-254, 1999 (doi)
Wierzbanowski K., J. Tarasiuk, B. Bacroix, A. Miroux, O. Castelnau, Deformation characteristics important for nucleation process : case of low carbon steel, Archiv. Metall., 44, 2, 183-201, 1999.
Bacroix B., A. Miroux, O. Castelnau, Simulation of the orientation dependence of stored energy during rolling deformation of low carbon steels, Model. Simul. Mater. Sci. Eng., 7, 5, 851-864, 1999 (doi)

1998

De La Chapelle S., O. Castelnau, V. Lipenkov, P. Duval, Dynamic recrystallization and texture development in ice as revealed by the study of deep ice cores in Antarctica and Greenland, J. Geophys. Res., 103, B3, 5091-5105, 1998 (doi)
Castelnau O., H. Shoji, A. Mangeney, H. Milsch, P. Duval, A. Miyamoto, K. Kuwabara, O. Watanabe, Anisotropic behavior of GRIP ices and flow in Central Greenland, Earth Planet. Sci. Letters, 154, 307-322, 1998 (doi)
Francillette H., O. Castelnau, B. Bacroix, J.L. Béchade, Experimental and predicted texture evolution in zirconium alloys deformed in channel die compression, Mater. Sci. Forum, 273-275, 523-528, 1998 (doi).

1997

Castelnau O., G.R. Canova, R.A. Lebensohn, P. Duval, Modelling viscoplastic behavior of anisotropic polycrystalline ice with a self-consistent approach, Acta Mater., 45, 11, 4823-4834, 1997 (doi)

1996

Castelnau O., P. Duval, R. A. Lebensohn, G.R. Canova, Viscoplastic modelling of texture development in polycrystalline ice with a self-consistent approach: comparison with bound estimates, J. Geophys. Res., 101, B6, 13851-13868, 1996 (doi)
Castelnau O., T. Thorsteinsson, S. Kipfstuhl, P. Duval, G. R. Canova, Modelling fabric development along the GRIP ice core, central Greenland, Ann. Glaciol., 23, 194-201, 1996 (doi)
Mangeney A., F. Califano, O. Castelnau, Isothermal flow of anisotropic ice sheet in the vicinity of an ice divide, J. Geophys. Res., 101, B12, 28189-28204, 1996 (doi)

1995

Duval P., O. Castelnau, Dynamic recrystallization of ice in polar ice sheets, J. de Physique, IV (suppl. J. Phys. III), C3, 5, 197-205, 1995 (link)

1994

Castelnau O., P. Duval, Simulations of anisotropy and fabric development in polar ices, Ann. Glaciol., 20, 277-282, 1994 (doi)

Cursus

PhD (1996) in Mechanics at Univ. Joseph Fourier, Grenoble, France (Laboratoire de Glaciologie et Géophysique de l'Environnement). (pdf)
1996-2009 : Laboratoire des Propriétés Mécaniques et Thermodynamiques des Matériaux, Villetaneuse.
CNRS Bronze medal in 1999
2006 : Habilitation, Univ. Paris 13 (pdf)
2006/2007 : sabbatical leave at the Institute of Geophysics and Planetary Physics, Univ. California San Diego, USA.
At PIMM since 2010.
2009-2015 : External collaborator of the Laboratoire Léon Brillouin (french neutrons source), Saclay.
Director of the Federation of Mechanics of the parisian region (Fédération Francilienne de Mécanique) since jan. 2019.