Conferences

[31] A. Khalfallah, Z. Ktari, LF. Menezes

Intelligent Approach for Accurately Identifying Constitutive Material Parameters of Anisotropic Tubular Materials, ESAFORM’2025, Paestum, Italy (07-09 May 2025).

[30] A. Khalfallah, Z. Ktari

Potential of the convolutional neural networks in prediction of the ring hoop tensile stress-strain curve for anisotropic tubes, 8th International Conference on Advances in Mechanical Engineering and Mechanics (ICAMEM2024), 28-30 June 2024, Sousse, Tunisia.

[29] Ali Khalfallah, L. Aissani, R. Silva, L. Vilhena, A. Ramalho. Friction and wear of DLC coatings lubricated with graphene oil suspensions. Paper presented in LUBMAT-IBERTRIB-2024, Kursaal, San Sebastian, Spain, 2024

[28] M. Nouira, M.C. Oliveira, Ali halfallah, J.L. Alves, L.F. Menezes.

The Role of the Yield Criterion on Stress and Strain Paths Under Non-proportional Loadings

14th International Conference on the Technology of Plasticity - Current Trends in the Technology of Plasticity, ICTP2023

ICTP2023, Sebtember 24-29, 2023, French Riviera, France 

[27] Zied Ktari, Pedro Prates, Ali Khalfallah

Machine learning for identifying behaviour parameters and friction for metallic tubes

10th International Conference Design and Modeling of Mechanical Systems,

CMSM'2023, 18 - 20 December 2023, Hammamet, Tunisia.

[26] Ali Khalfallah, S.A. Zoueghi, J.V. Fernandes

New approach for the identification of anisotropy material parameters using hydraulic bulge tests

41st IDDRG’2022, 6-10 June 2022, Lorient- France.

[25] Nasra Hannachi, Ali Khalfallah, Carlos Leitão, C. Dulce Rodrigues

Numerical Simulation of the Friction Stir Spot Welding Process (FSSW): Effect of the Friction Coefficient on the Heat Generation

9th International Conference Design and Modeling of Mechanical Systems,

CMSM’2021, 20-22 December 2021, Hammamet –Tunisia.

[24] Zied Ktari, Ali Khalfallah, Carlos Leitão

Development of Ring Hoop Shear Test for the Mechanical Characterization of Tubular Materials,

5th  International Conference on  Advanced  Materials Mechanics & Manufacturing

CoTuMe’2021, 22-24 March 2021, Hammamet – Tunisia.

[23] Ali Khalfallah,P.A. Prates, J.V. Fernandes. 2021, Effect of input variables uncertainty in free tube hydroforming process, ESAFORM 2021 - 24th International Conference on Material Forming, 2021, 2364,

[22] Zied Ktari, Ali Khalfallah, Carlos Leitão

Non-conventional Tensile Specimen for Mechanical Characterization of Tubular Materials

9th International Conference Design and Modeling of Mechanical Systems, CMSM’2021, 20-22 December 2021, Hammamet –Tunisia.

[21] Nasra Hannachi, Ali Khalfallah, Carlos Leitão, C. Dulce Rodrigues Comparison Between ALE and CEL Finite Element Formulations to Simulate Friction Stir Spot Welding,

5th  International   Conference on  Advanced Materials Mechanics & Manufacturing

CoTuMe’2021, 22-24 March 2021, Hammamet – Tunisia.

[20] N. Hannachi, Ali Khalfallah, C. Leitão, D.M. Rodrigues.

A Comparative Study on the Physical and Mechanical Behavior ofAA6082-T6 and AA5083- H116 Aluminum Alloys in Friction Stir Spot Welding

7th International Conference on Advances in Mechanical Engineering and Mechanics ICAMEM 2019, 16-18 December 2019, Hammamet – Tunisia.

[19] Meriem Nouira, Marta Oliveira, Ali Khalfallah, José Alves, & Luis Menezes

The Effect of the Loading Path History on the Fracture Loci

7th International Conference on Advances in Mechanical Engineering and Mechanics

ICAMEM 2019, 16-18 December 2019, Hammamet – Tunisia.

[18] Zied Ktari, Ali Khalfallah, Carlos Leitão

Design of a new tensile specimen for mechanical characterization of tubular materials

1er Congrès IC3M, 20-22 December 2019, Hammamet-Tunisia.

[17] Nasra Hannachi, Ali Khalfallah, Carlos Leitão and Dulce Rodrigues

Application of the Arbitrary Lagrangian Eulerian (ALE) method to the modeling of Friction Stir Welding

8th CMSM’2019, 18-20 March, 2019, Hammamet-Tunisia.

[16] Meriem Nouira, Marta Oliveira, Ali Khalfallah, J.L Alves, L.F Menezes

Analysis on the dependence of the fracture locus on the pressure and Lode angle

8th CMSM’2019, 18-20 March, 2019, Hammamet-Tunisia.

[15] Zied Ktari, Ali Khalfallah

Optimisation d’une éprouvette de traction sur anneau pour la caractérisation

mécanique des tubes métalliques

4eme COTUME’2018, 13-15 October, 2018, Hammamet-Tunisia.

[14] Temim Zribi and Ali Khalfallah

Numerical investigation of tube hydroforming of TWT using Corner Fill Test

21st International ESAFORM Conference on Material Forming, 23-25 April, 2018, Palermo-Italy.

[13] Temim Zribi and Ali Khalfallah

Evaluation   de   la   formabilité   des   tubes   bi-matériaux   par    simulation numérique du Corner Fill Test

7ème CMSM’2017, 27-29 March, 2017, Hammamet- Tunisia.

[12] Ali Khalfallah, Mohamed Tlijani

Experimental and numerical study of tubular material by lateral indentation test

6th CMSM’2015, 23-25 March, 2015, Hammamet-Tunisia

[11] Temim Zribi, Ali Khalfallah, H Belhadjsalah

Etude comparative pour la caractérisation des tubes hydroformés

Congrès Tunisien de Mécanique, 24-26 March, 2014, Sousse- Tunisia.

[10] Ali Khalfallah,, Temim Zribi, H Belhadjsalah

Application of tube hydroforming in square cross-section die for inverse identification method validation

17th International ESAFORM Conference on Material Forming ESAFORM’2013, 22 - 24 April, 2013, Aveiro- Portugal.

[9] Ali Khalfallah, Seifallah Zouegui

Identification des lois de comportement des tôles à partir des essais de gonflement hydraulique

5th CMSM’2013, 25-27 March 2013, Djerba –Tunisia.

[8] Temim Zribi, Ali Khalfallah, H Belhadjsalah

Analyse de la formabilité en hydroformage des tubes

5th CMSM ‘2013, 25-27 March, 2013, Djerba-Tunisia.

[7] Ali Khalfallah, Temim Zribi, M Zidi, H Belhadjsalah

Détermination du comportement plastique d’un joint soudé de tubes à partir de l’essai de traction simple et des mesures de la microdureté

7th JSTMM’2010, 26-27 November, 2010, Hammamet- Tunisia.

[6] Temim Zribi, Ali Khalfallah, H Belhadjsalah

Inverse method for flow stress parameters identification of tube hydroforming considering anisotropy

7th EUROMECH Solid Mechanics Conference, 7-11 September, 2009, Lisbon- Portugal.

[5] Temim Zribi , Ali Khalfallah, H Belhadjsalah

Analyse de l’effet des paramètres matériaux sur l’hydroformage des tubes

1st Congrès Tunisien de Mécanique, 17-19 March, 2008, Hammamet- Tunisia.

[4] H. Aguir, Ab. Chameck, Ali Khalfallah, H. Belhadjsalah, R. Hambli

Stratégie d’identification par réseaux de neurones artificiels basée sur

analyse de sensibilité

2nd CMSM’2007, 19-21 March, 2007, Monastir-Tunisia

[3] Ali Khalfallah, H Belhadjsalah, José L. Alves

Strategies for parameter identification

9th International ESAFORM’2006, 26-28 April, 2006, Glasgow-UK.

[2] Ali Khalfallah, H Belhadjsalah, A Dogui

Identification paramétrique et analyse de sensibilité

2nd JSTMM’2002, 25-26 October, 2002, Monastir-Tunisia.

[1] Ali Khalfallah, H. Belhadjsalah, A. Dogui

Anisotropic parameter identification using inverse method

4th International ESAFORM’2001, 23-25 April, 2001, Liège-Belgium.