Jacques Besson

Jacques Besson
MINES ParisTech | ParisTech · Centre des Matériaux PM FOURT CNRS UMR 7633 (MAT)

Ing PhD HDR
Fracture - Damage mechanics - FE simulation - C++ programming

About

305
Publications
43,116
Reads
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8,693
Citations
Additional affiliations
January 2005 - December 2005
EdF R&D Moret-sur-Loing
Position
  • Sabbatical leave
January 2000 - present
MINES ParisTech
Position
  • CNRS Research professor
September 1999 - August 2000
GKSS (now HEREON)
Position
  • Sabbatical leave à GKSS (then HZG now HEREON)
Education
September 1986 - June 1987
MINES ParisTech
Field of study
  • Mechanics of Materials
August 1986 - January 1990
MINES ParisTech
Field of study
  • Material science
September 1983 - June 1986
MINES ParisTech
Field of study
  • Engineering (materials and mechanics)

Publications

Publications (305)
Article
This study analyses the increase of crack propagations instabilities (pop-in) with irradiation during fracture toughness testing of aluminium alloy 6061 alloy after neutron irradiation. The aim is to identify if the crack propagation instabilities are related to microstructural heterogeneities, i.e. weak zones, or if they are linked to a competitio...
Article
Full-text available
The recently developed edge tracing (ET) method allows to estimate the radial deformation in axisymmetric tensile specimens via analysis of digital images recorded during the experiments. Images are processed to detect the sample's contours and therefore estimate the minimal cross‐section diameter. This technique was mainly developed to characteriz...
Article
Ductile failure prediction is essential to avoid loss of structural integrity or to control crack propagation during forming processes. One of the main difficulties is the prediction of complex crack paths. This study proposes a nonlocal extension of a local Gurson-Tvergaard-Needleman (GTN) ductile damage model at finite strains able to capture cup...
Article
The present study investigated the local arrestability of intergranular crack in high-strength martensitic steel through multi-scale three-dimensional (3D) analysis using X-ray computed tomography and focused ion beam machining (FIB)-scanning electron microscopy (SEM) serial sectioning combined with electron backscattering diffraction (3D EBSD). Ma...
Article
Strain localization often is a precursor to the ductile failure of materials. This paper investigates plastic strain localization phenomena in the case of random microstructures, namely cubic cells made of an elastic-perfectly plastic matrix embedding distribution of identical non-overlapping spherical voids. The consideration of random microstruct...
Article
Industries developing cold spray aim at dense and resistant coatings for component repair. However, as-sprayed 316L coatings display non-equilibrium microstructure and brittle fracture behavior. Improving their mechanical properties requires controlling their microstructure; post-spraying heat treatment is a promising approach. The recovery and rec...
Article
Full-text available
A load path change (LPC) from shear to tension has been studied for a recrystallized 2198 T8 aluminium alloy sheet material by 3D X-ray imaging combined with image correlation and interpreted by complementary 3D finite element (FE) simulations. A cross-shaped specimen was designed for the non-proportional loading and multiscale study. The effect of...
Preprint
Full-text available
The recently developed Edge Tracing (ET) method allows to estimate the radial deformation in axisymmetric tensile specimens via analysis of digital images recorded during the experiments. Images are processed to detect the sample’s contours and therefore, estimate the minimal cross–section diameter. This technique was mainly developed to characteri...
Article
Ductile tearing of a full size precracked pipe is experimentally investigated. In order to model and interpret the test, the pipe material is characterized using smooth and notched tensile bars and precracked C(T) specimens. This experimental database is used to fit the parameters of the non local Gurson–Tvergaard–Needleman (GTN) proposed in Zhang...
Chapter
A generic description of the nature of variables involved in constitutive models is provided. Their treatment within a finite element resolution of the set of differential equations defined by constitutive equations is described. In particular, a general form of the consistent tangent matrix is derived. Then, the proposed formalism is applied to de...
Preprint
Full-text available
The anisotropic material behaviour of a recrystallized AA2198 Al-Cu-Li alloy in T3 and T8 conditions was assessed by proportional loading of uniaxial-tension specimens in rolling (L), transverse (T) and diagonal (D) orientations. The width and longitudinal strains were measured to quantify plastic anisotropy. Notched-tension samples were tested in...
Article
Full-text available
We develop a methodology for classifying defects based on their morphology and induced mechanical response. The proposed approach is fairly general and relies on morphological operators (Angulo and Meyer in 9th international symposium on mathematical morphology and its applications to signal and image processing, pp. 226-237, 2009) and spherical ha...
Article
Full-text available
In continuum mechanics, the prediction of defect harmfulness requires to solve approximately partial differential equations with given boundary conditions. In this contribution boundary conditions are learnt for tight local volumes (TLV) surrounding cracks in 3D volumes. A non‐parametric data‐driven approach is used to define the space of defects,...
Article
The present study investigated the relationship between the mechanical response and microscopic crack propagation behavior of hydrogen-related intergranular fractures in high-strength martensitic steel. In contrast to cracks in the uncharged specimen, the cracks in the hydrogen-charged specimen propagated under a small crack opening displacement. C...
Conference Paper
Full-text available
Toughness properties of metallic materials are often required for all fitness-for-service analyses. The determination of these characteristics can be done either by using literature data, correlations established from other non-destructively measurable mechanical characteristics or by measuring the actual characteristics of the materials. The latt...
Article
In the automotive industry, crack prediction is an important step of the design: its accuracy is crucial to avoid additional development costs and delays. However, its simulation is not always reliable yet which could be explained by the use of too simple fracture criteria. A possible solution could be the improvement of the fracture behavior predi...
Article
The plastic deformation and the failure behavior of a third generation magnesium AZ31 sheet is studied under quasi–static tensile, compressive, and mixed mode loading conditions at room temperature. While the deformation anisotropy is found to be less pronounced compared to previously investigated rolled sheets of this alloy, a strong dependence of...
Article
Full-text available
A strain gradient void-driven ductile fracture model of single crystals is proposed and applied to simulate crack propagation in single and oligo-crystal specimens. The model is based on a thermodynamical framework for homogenized porous solids unifying and generalizing existing thermodynamical formulations. This porous single crystal ductile fract...
Article
Full-text available
A reliable determination of the onset of void coalescence is critical to the modelling of ductile fracture. Numerical models have been developed but rely mostly on analyses on single defect cells, thus underestimating the interaction between voids. This study aims to provide the first extensive analysis of the response of microstructures with rando...
Conference Paper
Industries developing cold-spray processes aim at producing dense and resistant coatings. Controlling microstructure and inter-particular fracture characteristics of sprayed coatings is essential to improve their properties. To do so; post-spraying heat treatment is a promising approach. This work addresses the development of such heat treatments a...
Article
Full-text available
During a Reactivity Initiated Accident (RIA), nuclear fuel cladding experiences a multiaxial loading state in which the Pellet-Cladding Mechanical Interaction (PCMI) produces a strain biaxiality ratio (εzz/εθθ) of between 0 and 1. This study examines the effect of the strain biaxiality ratio on the fracture of Zircaloy-4 fuel cladding. A new mechan...
Article
Full-text available
Titanium alloys with twinning- and transformation-induced plasticity effects display promising mechanical properties, particularly, high impact toughness, unlike conventional titanium alloys. This work focuses on a highly strain-hardenable Ti–Cr–Sn alloy displaying both TRIP and TWIP effects upon quasi-static loading and an average impact toughness...
Article
The present study investigated the hydrogen-related fracture behavior of specimens with different stress concentration factors through microstructure observation, finite element (FE) simulation, and digital image correlation (DIC) analysis. The alloy studied was a simple model alloy (Fe-0.2C binary alloy) with fully martensite structure. When the h...
Article
Full-text available
In this article an “hyper-reduced” scheme for the Crisfield’s algorithm (Crisfield, 1981) applied to buckling simulations and plastic instabilities is presented. The two linear systems and the ellipse equation entering the algorithm are projected on a reduced space and solved in a reduced integration domain, resulting in a system of “hyper-reduced”...
Article
Full-text available
A reduced strain gradient crystal plasticity theory which involves the gradient of a single scalar field is presented. Rate-dependent and rate-independent crystal plasticity settings are considered. The theory is then reformulated following first the micromorphic approach and second a Lagrange multiplier approach. The finite element implementation...
Conference Paper
This paper presents an assessment of the thermo-mechanical behavior of non-irradiated Cold-Worked Stress Relieved (CWSR) Zircaloy-4 nuclear fuel cladding, the first of the three containment barriers for the radioactive matter, under thermo-mechanical loading conditions representative of the first phase of a Reactivity Initiated Accident (RIA) in a...
Article
Full-text available
Fracture properties of a mother plate for API grade X100 line pipe after pre-straining up to 6% are investigated using tensile notched bars and CT precracked specimens. The material has an anisotropic plastic and damage behavior due to the thermomechanical control rolling process. Experiments evidence a decrease in both ductility and toughness for...
Article
Crack prediction is an important step of car design: its accuracy is crucial to avoid additional development costs and delays. The prediction of steel or aluminium sheets tearing is particularly challenging, and its simulation is not always reliable yet. This could be explained by the use of too simple fracture criteria based on a critical plastic...
Article
Sheet metals exhibits plastic anisotropy due to the rolling process. This article focuses on the particular case of an 2024T351 Aluminium alloy thick sheet which showed in addition to the anisotropy of mechanical properties an important evolution of the these properties along the thickness. A large series of tension tests performed is carried out u...
Article
This study aims at investigating a non-local Gurson-Tvergaard-Needleman (GTN) ductile damage model at finite strains within the framework of small-scale yielding. This model solves the problems of spurious strain localization and volumetric locking. The model is applied to simulate large crack propagation under small-scale yielding and plane-strain...
Article
Full-text available
Titanium alloys possessing Twinning and Transformation Induced Plasticity effects show promising mechanical properties, particularly high ductility, hardenability, impact and fracture toughness. This work focuses on a strain-transformable, coarse-grained β-Ti-Cr-Sn alloy displaying TWIP effect. To account for the enhanced properties of this alloy,...
Article
Full-text available
In this study, anisotropic ductility and associated damage mechanisms of a grade X100 line pipe steel previously studied at the macroscopic scale were investigated using in situ synchrotron radiation computed tomography of notched round bars. Line pipe materials have anisotropic mechanical properties, such as tensile strength, ductility and toughne...
Article
Full-text available
A deterioration of fracture toughness, especially of the tearing modulus, with aging time and associated strength increase is observed for aluminum 6061 and reproduced here numerically thanks to a stress-based damage nucleation criterion. A correlative multiscale analysis by scanning electron microscopy, atom probe tomography as well as 3D X-ray...
Presentation
Full-text available
Fatigue and Fracture, a symposium in memory of Paul C. Paris
Article
The present study quantitatively evaluated mechanical response of hydrogen-related fracture in the as-quenched martensitic steel and correlated it to crack propagation behavior analyzed by microstructure observations. The crack-growth resistance curves revealed that the hydrogen-related intergranular cracks propagated in a stable manner even when t...
Presentation
Full-text available
Local approach to fracture for ductile failure ESIS summer school in Krakow September 2019
Article
This work addressed fracture mechanisms of nuclear fuel claddings in hypothetical Loss-Of-Coolant-Accident (LOCA) conditions. To this aim, laboratory-scale “semi-integral” thermal-mechanical tests were carried out, using an oxidation temperature of 1200 °C, slow cooling down to 700 °C and a final quench by reflooding under an axial load. Two fractu...
Conference Paper
This paper will assess the capability of the shear modified Gurson model developed by Nahshon and Hutchinson which is used by Kiwa Inspecta within the ATLAS+ project. This is done by comparison to experimental results from SENT fracture tests performed by EDF and ARMINES. The procedure for parameter identification for the standard and shear modifie...
Conference Paper
Full-text available
Expansion Due to Compression (EDC) tests were conducted in order to reproduce the mechanical conditions during the low temperature phase of a power transient in a reactor, also called the Pellet Cladding Mechanical Interaction (PCMI) phase. The tests are intended to reproduce, as closely as possible, the loading mode and macroscopic failure aspects...
Presentation
A deterioration of fracture toughness, especially of tearing modulus, with aging time and associated strength increase is observed for aluminum 6061 and reproduced here numerically thanks to a new stress based damage nucleation criterion. Indeed, a correlative multiscale analysis by Scanning Electron Microscopy, Atom Probe Tomography as well as 3D...
Article
Full-text available
A micromorphic crystal plasticity model is used to simulate slip band localization in single crystals under simple shear at finite deformations. Closed form analytical solutions are derived for single slip in the case of positive, zero and negative strain hardening. Linear negative strain hardening, i.e. linear softening, leads to a constant locali...
Presentation
Full-text available
Une propagation rapide mais limitée de la fissure est parfois observée lors d’essais de ténacité. Ce phénomène, appelé « pop-in », se traduit par une chute brusque de la force sur la courbe force-ouverture de l’entaille. Ce comportement peut être causé par la présence d’une zone faible hétérogène dans le matériau, ou être le résultat d’une instabil...
Presentation
Full-text available
Rapid but limited crack propagation associated with a sudden decrease in load is sometimes observed during fracture toughness tests. This phenomenon is often referred to as “pop-in”. This behavior can be caused by local “weak” areas within the material or by a purely mechanical instability. In this study, such a behavior was observed in a 6061 alu...
Conference Paper
Expansion Due to Compression (EDC) tests were conducted in order to reproduce the mechanical conditions during the low temperature phase of a power transient in a reactor, also called the Pellet Cladding Mechanical Interaction (PCMI) phase. The tests are intended to reproduce, as closely as possible, the loading mode and macroscopic failure aspects...
Presentation
Full-text available
This study investigates rapid but limited crack propagation associated with a sudden decrease in load some-times observed during fracture toughness tests. This phenomenon is often referred to as “pop-in”. Tensile and compact tension specimens made of 6061 Al-alloy were machined from blocks which had been subjected to different isothermal ageing (4...
Article
This study investigates ‘‘pop-in’’ phenomenon, i.e. unstable but limited crack propagation associated with a sudden decrease in load. Its origin is linked to an interaction between material tearing modulus and machine stiffness. Small scale yielding criterion for instability is applied to compact tension (CT) samples. To validate this criterion exp...
Article
This study is part of a work dedicated to predicting the overall thermoelastic properties of microcracked polycrystals. In the present part, the suitability of Fourier-based methods to estimate the mechanical response of a homogeneous body containing cracks is explored. The effect of the Green operator's discretization on the local elastic fields s...
Conference Paper
The 4-years European project ATLAS+ project was launched in June 2017. Its main objective is to develop advanced structural assessment tools to address the remaining technology gaps for the safe and long term operation of nuclear reactor pressure coolant boundary systems. The transferability of ductile material properties from small scale fracture...
Article
Full-text available
The plastic deformation of two different rolled magnesium sheets (AZ31 and ZE10) under quasi-static tensile and compressive loading conditions at room temperature is studied. Beside glide by dislocation motion, deformation twinning leads to evolving flow stress asymmetry and evolving plastic anisotropy in these alloys. These mechanisms cause a sign...
Presentation
Full-text available
This study investigates rapid but limited crack propagation associated with a sudden decrease in load sometimes observed during fracture toughness tests. This phenomenon is often referred to as "pop-in". Tests are performed on an age hardened aluminum alloy subjected to various heat treatments to obtain various metal-lurgical states. Longer aging i...
Article
Aeronautical structures such as landing gears, wheels or turbine shaft are designed to withstand predefined loadings corresponding to critical scenarios. This work addresses the definition of a ductile failure initiation criterion under multiaxial loading for ML340©™ ultra high strength steel employed in such structures. The experimental testing ca...
Patent
The disclosure relates to a seal inserted between two elements having different coefficients of thermal expansion, the seal includes a first and a second metallic contact portion spaced along an axial stacking direction orthogonal with respect to a radial direction. Tight connection means between the first and second contact portions allow a relati...
Article
A two-surface, pressure-insensitive plasticity model is further developed to represent the mechanical response of hexagonal close packed metals. The model describes the 3D plastic anisotropy of a material, the tension–compression asymmetry, and the consistent evolution upon straining of both the net anisotropy and the asymmetry. The model may be vi...
Article
The major goal of this work is to develop a robust modelling strategy for the simulation of ductile damage development including crack initiation and subsequent propagation. For that purpose, a Gurson-type model is used. This model class, as many other damage models, leads to significant material softening and must be used within a large deformatio...
Article
A micromorphic single crystal plasticity model is formulated at finite deformations as an extension of Mandel’s classical theory based on a multiplicative decomposition of the deformation gradient. It involves a single microslip degree of freedom in addition to the usual displacement components. Two main variants of the constitutive equations are p...
Article
A welded pipeline segment containing a girth weld defect is tested under combined internal pressure and bending. The test is then analyzed with respect to both overall elasto-plastic behavior and crack propagation up to failure. The analysis is carried out using the finite element method. Constitutive equations for the plastic behavior of both weld...
Presentation
Full-text available
This study investigates a phenomenon observed during some fracture toughness tests called "pop-in" phenomenon, an instability leading to rapid but limited crack propagation associated with a sudden decrease in load. Analyzes are performed on age hardened aluminum alloy used after various heat treatments to obtain various metallurgical states ; whic...
Article
Void growth and coalescence, known as main mechanisms of ductile fracture, are investigated for irradiated FCC single crystals. Finite element simulations of voided unit cells are performed with a single crystal plasticity model accounting for strain hardening and softening associated with irradiation-induced defects. The simulations predict a rath...
Conference Paper
Full-text available
In this paper, the quasi-static plastic deformation of a hot-rolled magnesium AZ31B thick plate is investigated at room temperature in both tension and compression. A macroscopic two-surface model is used to describe the complex anisotropic behavior of this material. The model accounts for plastic anisotropy as well as yielding asymmetry due to twi...
Conference Paper
Full-text available
In strain based design applications, it is necessary to demonstrate that the weld overmatches the parent metal properties to avoid strain localization at the pipeline girth weld. From an experimental point of view, it is always a challenge to accurately and consistently measure tensile properties in the weld metal area in particular in narrow-gap w...
Article
An elastoviscoplastic model is formulated at finite strains for porous single crystals. The model extends the yield function developed by Han et al. (2013) for porous single crystals at infinitesimal strains to finite strains, incorporating the evolution of void volume fraction and strain hardening of single crystal matrix. The model is assessed th...
Article
Full-text available
Ductile failure of structural metals is relevant to a wide range of engineering scenarios. Computational methods are employed to anticipate the critical conditions of failure, yet they sometimes provide inaccurate and misleading predictions. Challenge scenarios, such as the one presented in the current work, provide an opportunity to assess the bli...