Said Hariri - Academia.edu (original) (raw)

Papers by Said Hariri

Research paper thumbnail of Comportement mécanique en statique et en fatigue des aciers à 9% Nickel dans des conditions cryogéniques

HAL (Le Centre pour la Communication Scientifique Directe), 2017

Research paper thumbnail of Flambement d'une sphère sous sollicitations combinées

HAL (Le Centre pour la Communication Scientifique Directe), Apr 11, 2017

Research paper thumbnail of Contact fatiAoute and wear of roller mills. Influence of hafacing microstructure and residual stresses

Research paper thumbnail of Flambement d'une sphère sous cisaillement circonférentiel

Les structures de type coque sont tres utilisees dans l'industrie, notamment pour les apparei... more Les structures de type coque sont tres utilisees dans l'industrie, notamment pour les appareils a pres-sion, les transports et le bâtiment. Le choix de telles structures minces represente assurement un avan-tage economique mais pose naturellement des problemes de tenue mecanique, vis-a-vis de structures plus massives. Dans les appareils a pression en particulier, les sollicitations sont telles que la tenue au flambement doit etre consideree avec soin, compte tenu des risques materiels et humains associes. Depuis plus d'un siecle, le flambement des coques fait l'objet de nombreuses etudes, aussi bien fonda-mentales qu'appliquees, d'autant plus qu'il est frequemment caracterise par de grandes disparites entre les resultats experimentaux et les predictions theoriques (comme le montrent deja les resultats precur-seurs de Lorenz, Timoshenko et Southwell dans le cas d'un cylindre sous compression axiale). Il faut attendre les travaux de von Karman et Tsien, pui...

Research paper thumbnail of Sur la recherche académique à finalités industrielles

Research paper thumbnail of Comparaison entre la méthode GUM et Monte Carlo pour l'estimation de l'incertitude en mesure 3D: application à l'étude d'une planéité

a. Univesité Mohammed V de Rabat, Ecole Normale Supérieure d'Enseignement Technique (ENSET ) ... more a. Univesité Mohammed V de Rabat, Ecole Normale Supérieure d'Enseignement Technique (ENSET ) de Rabat, Laboratoire LaMIPI, Avenue de l'Armée Royale, Madinat Al Irfane, 10100 Rabat Maroc. Email: a.jalid@um5s.net.ma; a.algharad@um5s.net.ma b. Département Technologie des Polymères et Composites & Ingénierie Mécanique Ecole des Mines de Douai, 941 rue Charles Bourseul 59500 Douai France ; Email: said.hariri@mines-douai.fr c. Ecole Supérieure de Métrologie, Ecole des Mines de Douai, 59500 Douai, France. Email: jean-paul.senelaer@mines-douai.fr

Research paper thumbnail of Elastoplastic buckling and collapse of spherical shells under combined loadings

Thin-Walled Structures, 2018

Research paper thumbnail of Experimental and Numerical Study of Defects in Pressuresed Cylindrical Shells Instrumented by Acoustic Emission and Strain Gauges

International Journal of Research in Engineering and Technology, 2015

Research paper thumbnail of Comparison of the GUM and Monte Carlo methods on the flatness uncertainty estimation in coordinate measuring machine

International Journal of Metrology and Quality Engineering, 2016

Research paper thumbnail of Fracture mechanics defect assessment diagram on pipe from steel P264GH with a notch

International Journal of Mechanics and Materials in Design, 2015

Research paper thumbnail of Contribution to pressure vessels design of innovative methods and comparative application with standardized rules on a realistic structure – Part I

International Journal of Pressure Vessels and Piping, 2015

Research paper thumbnail of Expérience de l’enseignement de la résistance des matériaux

Les écoles des Mines d’Albi, d’Alès et de Douai ont mis en commun une Formation Continue Diplôman... more Les écoles des Mines d’Albi, d’Alès et de Douai ont mis en commun une Formation Continue Diplômante à Distance. Cette formation permet à des techniciens supérieurs, ayant 3 années d’expérience professionnelle d’accéder, par le biais de la formation continue, au diplôme d’ingénieur. La première année est constituée d’un enseignement à distance s’appuyant sur les technologies de l’information et de communication. Dans notre communication on abordera les objectifs pédagogiques, le contenu et le déroulement de la formation. Le retour d’expérience sera fait et illustré par des témoignages d’étudiants. L’enseignement de la résistance des matériaux servira de support à cet exposé.

Research paper thumbnail of Estimation of form deviation and the associated uncertainty in coordinate metrology

International Journal of Quality & Reliability Management, 2015

Purpose – The uncertainty evaluation for coordinate measuring machine metrology is problematic du... more Purpose – The uncertainty evaluation for coordinate measuring machine metrology is problematic due to the diversity of the parameters that can influence the measurement result. From discrete coordinate data taken on curve (or surface) the software of these machines proceeds to an identification of the measured feature, the parameters of the substitute feature serve in the phase of calculation to estimate the form error of form, and the decisions made based on the result measurement may be outliers when the uncertainty associated to the measurement result is not taken into account. The paper aims to discuss these issues. Design/methodology/approach – The authors relied on the orthogonal distance regression (ODR) algorithm to estimate the parameters of the substitute geometrical elements and their uncertainties. The solution of the problem is resolved by an iterative calculation according to the Levenberg Marquard optimization method. The authors have also presented in this paper the propagation model of un...

Research paper thumbnail of A Review of State-of-the-Art Methods for Pressure Vessels Design Against Progressive Deformation

Journal of Pressure Vessel Technology, 2015

Progressive plastic deformation is one of the damage mechanisms which can occur in pressure vesse... more Progressive plastic deformation is one of the damage mechanisms which can occur in pressure vessels subjected to cyclic loading. For design applications, the main rule proposed by codes against this failure mode is the so-called 3f (or 3Sm) criterion. During the last decade, studies have shown that this condition can be unreliable, and its application should be restricted. In parallel, theoretical developments enabled shakedown analyses to be considered in design methodology, and to be incorporated in codes and standards (EN13445, CODAP) from the early 2000s. This paper gives a review of innovative methods based on shakedown theory, which can be used in the determination of elastic shakedown limits, ratchet limits, or cyclic steady state. These approaches are based on different concepts, such as elastic compensation linear matching method (LMM), Gokhfeld theory (uniform modified yield, load dependent yield modification (LDYM)), or the research of stabilized cycle direct cyclic analy...

Research paper thumbnail of Influence of sand movement in the Sahara on the erosion of pipeline network

EPJ Web of Conferences, 2010

Research paper thumbnail of Burst Test and J-Integral Crack Growth Criterion in High Density Poly-Ethylene Pipe Subjected to Internal Pressure

Applied Condition Monitoring, 2015

In the present work we are interested on the analysis of the severity of crack defects created by... more In the present work we are interested on the analysis of the severity of crack defects created by a disc cutter and to study the behavior of a high density polyethylene pipe (HDPE pipe) when subjected to an internal pressure, either in the absence or presence of a pre-crack. In order to do this, experimental tests was performed to measure the toughness and to determine the mechanical behavior of HDPE. These features were used to perform numerical simulations using ABAQUS on pipe solicited by an increase in internal pressure. This allows to compare with burst tests of cracked pipes and to determine the fracture energy that will be compared to the toughness.

Research paper thumbnail of Failure of Cylindrical Shells: Numerical and Experimental Study

NATO Science for Peace and Security Series

Research paper thumbnail of Méthode d'analyse simplifiée appliquée aux structures tridimensionnelles

Revue européenne des éléments finis, 2002

Cet article présente une méthode d'analyse simplifiée des structures inélastiques. Ce... more Cet article présente une méthode d'analyse simplifiée des structures inélastiques. Cette approche a été proposée par J. Zarka et al. afin de prédire la nature de l'état limite et le comportement des structures sollicitées cycliquement. Elle permet une diminution du temps et de la complexité des calculs, comparée aux formulations incrémentales classiques. Suite à une décomposition de la réponse réelle

Research paper thumbnail of Comparison of semi-elliptical cracks in cylinders with a thickness transition and in a straight cylinders – Elastic–plastic behaviour

Engineering Fracture Mechanics, 2006

This paper presents a study of a circumferential external semi-elliptical crack in a cylinder wit... more This paper presents a study of a circumferential external semi-elliptical crack in a cylinder with a thickness transition. Crack harmfulness is compared to the harmfulness of a similar crack in a straight cylinder, on the basis of J-integral calculations. Loads considered are pure tensile stress and bending moment. A numerical analysis is performed considering elastic plastic behaviour of material. A

Research paper thumbnail of Static, dynamic and fatigue characteristics of the pipeline API 5L X52 steel after sandblasting

Engineering Failure Analysis, 2013

ABSTRACT The influence of sandblasting on a surface notched pipeline with API 5L X52 steel is stu... more ABSTRACT The influence of sandblasting on a surface notched pipeline with API 5L X52 steel is studied. The purpose of this study is to evaluate the mechanical characteristics of material in both directions of pipeline (longitudinal (L) and transverse (T)). Specimens were taken from a pipeline and material damage was made by projecting corundum particles (aluminium oxide). It has been shown that the sandblasting has little affect on the yield stress and ultimate strength. Erosion of surface layers, under the sand impacting, improves the material lifetime and elongation at fracture. The fracture toughness of sandblasted material manifests differently in both L and T directions. In order to justify these evolutions, a microstructural study was carried out. The observation of damage mode and distribution of residual stress under the notch tip show that the material hardening, the notch radius and the compressive stress play an important role in stabilizing the mechanical properties of material.

Research paper thumbnail of Comportement mécanique en statique et en fatigue des aciers à 9% Nickel dans des conditions cryogéniques

HAL (Le Centre pour la Communication Scientifique Directe), 2017

Research paper thumbnail of Flambement d'une sphère sous sollicitations combinées

HAL (Le Centre pour la Communication Scientifique Directe), Apr 11, 2017

Research paper thumbnail of Contact fatiAoute and wear of roller mills. Influence of hafacing microstructure and residual stresses

Research paper thumbnail of Flambement d'une sphère sous cisaillement circonférentiel

Les structures de type coque sont tres utilisees dans l'industrie, notamment pour les apparei... more Les structures de type coque sont tres utilisees dans l'industrie, notamment pour les appareils a pres-sion, les transports et le bâtiment. Le choix de telles structures minces represente assurement un avan-tage economique mais pose naturellement des problemes de tenue mecanique, vis-a-vis de structures plus massives. Dans les appareils a pression en particulier, les sollicitations sont telles que la tenue au flambement doit etre consideree avec soin, compte tenu des risques materiels et humains associes. Depuis plus d'un siecle, le flambement des coques fait l'objet de nombreuses etudes, aussi bien fonda-mentales qu'appliquees, d'autant plus qu'il est frequemment caracterise par de grandes disparites entre les resultats experimentaux et les predictions theoriques (comme le montrent deja les resultats precur-seurs de Lorenz, Timoshenko et Southwell dans le cas d'un cylindre sous compression axiale). Il faut attendre les travaux de von Karman et Tsien, pui...

Research paper thumbnail of Sur la recherche académique à finalités industrielles

Research paper thumbnail of Comparaison entre la méthode GUM et Monte Carlo pour l'estimation de l'incertitude en mesure 3D: application à l'étude d'une planéité

a. Univesité Mohammed V de Rabat, Ecole Normale Supérieure d'Enseignement Technique (ENSET ) ... more a. Univesité Mohammed V de Rabat, Ecole Normale Supérieure d'Enseignement Technique (ENSET ) de Rabat, Laboratoire LaMIPI, Avenue de l'Armée Royale, Madinat Al Irfane, 10100 Rabat Maroc. Email: a.jalid@um5s.net.ma; a.algharad@um5s.net.ma b. Département Technologie des Polymères et Composites & Ingénierie Mécanique Ecole des Mines de Douai, 941 rue Charles Bourseul 59500 Douai France ; Email: said.hariri@mines-douai.fr c. Ecole Supérieure de Métrologie, Ecole des Mines de Douai, 59500 Douai, France. Email: jean-paul.senelaer@mines-douai.fr

Research paper thumbnail of Elastoplastic buckling and collapse of spherical shells under combined loadings

Thin-Walled Structures, 2018

Research paper thumbnail of Experimental and Numerical Study of Defects in Pressuresed Cylindrical Shells Instrumented by Acoustic Emission and Strain Gauges

International Journal of Research in Engineering and Technology, 2015

Research paper thumbnail of Comparison of the GUM and Monte Carlo methods on the flatness uncertainty estimation in coordinate measuring machine

International Journal of Metrology and Quality Engineering, 2016

Research paper thumbnail of Fracture mechanics defect assessment diagram on pipe from steel P264GH with a notch

International Journal of Mechanics and Materials in Design, 2015

Research paper thumbnail of Contribution to pressure vessels design of innovative methods and comparative application with standardized rules on a realistic structure – Part I

International Journal of Pressure Vessels and Piping, 2015

Research paper thumbnail of Expérience de l’enseignement de la résistance des matériaux

Les écoles des Mines d’Albi, d’Alès et de Douai ont mis en commun une Formation Continue Diplôman... more Les écoles des Mines d’Albi, d’Alès et de Douai ont mis en commun une Formation Continue Diplômante à Distance. Cette formation permet à des techniciens supérieurs, ayant 3 années d’expérience professionnelle d’accéder, par le biais de la formation continue, au diplôme d’ingénieur. La première année est constituée d’un enseignement à distance s’appuyant sur les technologies de l’information et de communication. Dans notre communication on abordera les objectifs pédagogiques, le contenu et le déroulement de la formation. Le retour d’expérience sera fait et illustré par des témoignages d’étudiants. L’enseignement de la résistance des matériaux servira de support à cet exposé.

Research paper thumbnail of Estimation of form deviation and the associated uncertainty in coordinate metrology

International Journal of Quality & Reliability Management, 2015

Purpose – The uncertainty evaluation for coordinate measuring machine metrology is problematic du... more Purpose – The uncertainty evaluation for coordinate measuring machine metrology is problematic due to the diversity of the parameters that can influence the measurement result. From discrete coordinate data taken on curve (or surface) the software of these machines proceeds to an identification of the measured feature, the parameters of the substitute feature serve in the phase of calculation to estimate the form error of form, and the decisions made based on the result measurement may be outliers when the uncertainty associated to the measurement result is not taken into account. The paper aims to discuss these issues. Design/methodology/approach – The authors relied on the orthogonal distance regression (ODR) algorithm to estimate the parameters of the substitute geometrical elements and their uncertainties. The solution of the problem is resolved by an iterative calculation according to the Levenberg Marquard optimization method. The authors have also presented in this paper the propagation model of un...

Research paper thumbnail of A Review of State-of-the-Art Methods for Pressure Vessels Design Against Progressive Deformation

Journal of Pressure Vessel Technology, 2015

Progressive plastic deformation is one of the damage mechanisms which can occur in pressure vesse... more Progressive plastic deformation is one of the damage mechanisms which can occur in pressure vessels subjected to cyclic loading. For design applications, the main rule proposed by codes against this failure mode is the so-called 3f (or 3Sm) criterion. During the last decade, studies have shown that this condition can be unreliable, and its application should be restricted. In parallel, theoretical developments enabled shakedown analyses to be considered in design methodology, and to be incorporated in codes and standards (EN13445, CODAP) from the early 2000s. This paper gives a review of innovative methods based on shakedown theory, which can be used in the determination of elastic shakedown limits, ratchet limits, or cyclic steady state. These approaches are based on different concepts, such as elastic compensation linear matching method (LMM), Gokhfeld theory (uniform modified yield, load dependent yield modification (LDYM)), or the research of stabilized cycle direct cyclic analy...

Research paper thumbnail of Influence of sand movement in the Sahara on the erosion of pipeline network

EPJ Web of Conferences, 2010

Research paper thumbnail of Burst Test and J-Integral Crack Growth Criterion in High Density Poly-Ethylene Pipe Subjected to Internal Pressure

Applied Condition Monitoring, 2015

In the present work we are interested on the analysis of the severity of crack defects created by... more In the present work we are interested on the analysis of the severity of crack defects created by a disc cutter and to study the behavior of a high density polyethylene pipe (HDPE pipe) when subjected to an internal pressure, either in the absence or presence of a pre-crack. In order to do this, experimental tests was performed to measure the toughness and to determine the mechanical behavior of HDPE. These features were used to perform numerical simulations using ABAQUS on pipe solicited by an increase in internal pressure. This allows to compare with burst tests of cracked pipes and to determine the fracture energy that will be compared to the toughness.

Research paper thumbnail of Failure of Cylindrical Shells: Numerical and Experimental Study

NATO Science for Peace and Security Series

Research paper thumbnail of Méthode d'analyse simplifiée appliquée aux structures tridimensionnelles

Revue européenne des éléments finis, 2002

Cet article présente une méthode d'analyse simplifiée des structures inélastiques. Ce... more Cet article présente une méthode d'analyse simplifiée des structures inélastiques. Cette approche a été proposée par J. Zarka et al. afin de prédire la nature de l'état limite et le comportement des structures sollicitées cycliquement. Elle permet une diminution du temps et de la complexité des calculs, comparée aux formulations incrémentales classiques. Suite à une décomposition de la réponse réelle

Research paper thumbnail of Comparison of semi-elliptical cracks in cylinders with a thickness transition and in a straight cylinders – Elastic–plastic behaviour

Engineering Fracture Mechanics, 2006

This paper presents a study of a circumferential external semi-elliptical crack in a cylinder wit... more This paper presents a study of a circumferential external semi-elliptical crack in a cylinder with a thickness transition. Crack harmfulness is compared to the harmfulness of a similar crack in a straight cylinder, on the basis of J-integral calculations. Loads considered are pure tensile stress and bending moment. A numerical analysis is performed considering elastic plastic behaviour of material. A

Research paper thumbnail of Static, dynamic and fatigue characteristics of the pipeline API 5L X52 steel after sandblasting

Engineering Failure Analysis, 2013

ABSTRACT The influence of sandblasting on a surface notched pipeline with API 5L X52 steel is stu... more ABSTRACT The influence of sandblasting on a surface notched pipeline with API 5L X52 steel is studied. The purpose of this study is to evaluate the mechanical characteristics of material in both directions of pipeline (longitudinal (L) and transverse (T)). Specimens were taken from a pipeline and material damage was made by projecting corundum particles (aluminium oxide). It has been shown that the sandblasting has little affect on the yield stress and ultimate strength. Erosion of surface layers, under the sand impacting, improves the material lifetime and elongation at fracture. The fracture toughness of sandblasted material manifests differently in both L and T directions. In order to justify these evolutions, a microstructural study was carried out. The observation of damage mode and distribution of residual stress under the notch tip show that the material hardening, the notch radius and the compressive stress play an important role in stabilizing the mechanical properties of material.