Texas A&M University                                                       Pennsylvania State University                                                       University of Houston                                                        NSF

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US-France

The activities between the US and France currently involve research groups of Dimitris Lagoudas (Texas A&M University), Ibrahim Karaman (Texas A&M University), Etienne Patoor and Yves Chemisky (ENSAM – Metz, France) and Tarak Ben Zineb (LEMTA – University of Lorraine - CNRS). 

 In August 2011, Dr. Yves Chemisky, a new faculty member at Arts et Metiers ParisTech and former postdoctoral researcher with Dr. Dimitris Lagoudas at Texas A&M University, has been involved with collaborations with the IIMEC. He was previously involved in the IMI as a Postdoc at Texas A&M University.

 The activities led by Tarak Ben Zineb and his group in the past year have included collaborations with D. Lagoudas and I. Karaman (Texas A&M University), B. Kockar (Hacettepe University, Turkey), and T. Bouraoui (The National Engineering School of Monastir – University of Monastir,Tunisia) among the IIMEC members. Currently an M.S. student from LEMTA, Florent Righi, is working on his M.S. thesis at Texas A&M University under the guidance of Dr. Lagoudas, funded by the IIMEC program.

 The IIMEC related research accomplishments in 2011 can be summarized as:

  • Fe-based SMA behavior modeling and development of finite element based numerical tool for design of corresponding applications (France, Tunisia, U.S., Germany collaboration)
  • Experimental analysis of hydrogen diffusion effect on NiTi superelastic behavior (France-Tunisia collaboration)
  • Modeling of the NiTi SMA thermomechanical behavior (France – U.S. collaboration)

 The plans for the coming year are:

  • Energy harvesting based on hybrid SMA-Ferroelectric thin films
  • Modeling of hydrogen diffusion effect on NiTi superelastic behavior
  • Modeling of the coupling between phase transformation and plasticity and its effects on phase transformation characteristics (C. Bouby, A. Mikolajczak, T. Ben Zineb, B. Kiefer, T. Bouraoui, P. Sedlak, M. Frost, T. Ara, Y. Chemisky, B. Piotrowski, E. Patoor)
  • Porous SMA behavior modeling considering biomechanical and civil engineering applications (C. Bouby, A. Mikolajczak, F. Thiebaud, T. Ben Zineb, M. Haboussi, Y. Chemisky, B. Piotrowski, E. Patoor, B. Kockar)

The activities led by Etienne Patoor at Art et Metiers Paris Tech as his group counted with the visit or collaboration of several researches such as Hamid Garmestani (GeorgiaTech), Theocharis Baxevanis (Texas A&M), Lahcen Azrar (FST Tangier, Morocco), Dimitris Lagoudas (Texas A&M), Darren Hartl (Texas A&M), Ibrahim Karaman (Texas A&M) and, Tarak Ben Zineb (Université de Lorraine).

The accomplishments made by the groups in 2011 were:

  •  Yves Chemisky, Fodil Meraghni and Etienne Patoor served as instructor in the Winter School on Computational Material Science Across Scale held in January 2012 at College Station.
  • Synthesis and characterization of nickel-free SMA (W. Elmay, P. Laheurte, S. Berveiller, E. Patoor)
  • Synthesis and characterization of TiNb based alloys for high temperature applications (T. Ara, S. Berveiller, E. Patoor)
  • Stress analysis by Kossel Microdiffraction on a SMA multicrystal during in-situ loading test (D. Bouscaud, S. Berveiller, E. Patoor)
  • Identification of thermodynamical model parameters for superelastic alloys (F. Meraghni, Y. Chemisky, B. Piotrowski, R. Echchorfi, N. Bourgeois, E. Patoor)
  • Multiaxial loading of NiTi SMA (F. Meraghni, Y. Chemisky, R. Echchorfi, N. Bourgeois, E. Patoor)

The plans for 2012 are: 

  • Hosting the 2013 IIMEC annual meeting in collaboration with Georgia Tech Lorraine
  • Organization of a school on experimental analysis for multifunctional materials
  • Multiaxial characterization of shape memory alloys and Identification of model parameters for the numerical simulation of smart structures (F. Meraghni, Y. Chemisky, N. Bourgeois, E. Patoor).
  • For this task a graduate student from the department of Aerospace engineering at Texas A&M will join the group of Arts et Métiers ParisTech for a 2 month internship (June-July 2012)
  • Micromechanical modeling of the behavior of nickel-free SMA (W. Elmay, B. Piotrowski, E. Patoor)
  • Micromechanical modeling of the behavior of high temperature SMA (T. Ara, C. Bouby, T. Ben Zineb, B. Piotrowski, S. Berveiller, E. Patoor)
  • Size effect analysis in SMA from nanoindentation tests (C. Caer, J.S. Lecomte, S. Berbenni, E. Patoor)
  • Modeling of the coupling between phase transformation and plasticity (C. Bouby, A. Mikolajczak, T. Ben Zineb, B. Kiefer, T. Bouraoui, P. Sedlak, M.
    Frost, T. Ara, Y. Chemisky, B. Piotrowski, E. Patoor)
  • Porous SA behavior modeling (C. Bouby, A. Mikolajczak, F. Thiebaud, T. Ben Zineb, M. Haboussi, Y. Chemisky, B. Piotrowski, E. Patoor, B. Kockar)
  • Prediction of damage evolution in shape memory alloys (Y. Chemisky, F. Meraghni, E. Patoor). A strong collaboration is scheduled with the research group at Texas A&M (D. Hartl, D.C. Lagoudas).
  • Micromechanical modeling coupled with statistical functions (F. Meraghni, H. Garmestani)
  • Experimental investigation and multiscale modeling of electromechanically induced cracks in nanoreinforced polymer composites (F. Meraghni, Y. Chemisky, Z. Ounaies, S. El-Borgi, M. Naraghni).
  • Micromechanical modeling of defects coalescence and localization in polyaminde reinforced composite (F. Meraghni, A. Benzerga, S. Ahzi, M. Nait-Abdelaziz).
  • Zoubeida Ounaies (Penn State) invited professor for one month at Arts et Métiers ParisTech.