Partenaires

Logo tutelle
CNRS



Rechercher

Sur ce site

Sur le Web du CNRS


Accueil du site > Pages personnelles > HAUPERT Sylvain > Sylvain Haupert

Sylvain Haupert

CNRS Research Engineer (IR1)

Contact

  • Email : sylvain.haupert (at) upmc.fr
  • Phone : +33 6 08 10 11 92

The purpose of my research is to evaluate the potential of new methods based on nonlinear elasticity measurement that have emerged in the fields of geophysics and non-destructive testing, and which showed greater sensitivity than the linear elastic response to the presence of weak contacts within a rigid structure, such as cracks. Our work can be separated in two different topics :

  • Topic 1 : Nonlinear ultrasound monitoring of bone microdamage in cortical bone. Bone microdamage characterization as well as its involvement in bone metabolism or bone fragility remains a challenge, especially because no existing techniques are well suited to its measurement. Non invasive techniques for detecting and monitoring bone microcracks accumulation and propagation are thus highly desirable. The objective of this study was to evaluate the sensitivity of nonlinear resonant ultrasound spectroscopy (NRUS) measurements to the accumulation of damage in cortical bone by fatigue or by controlled crack propagation.
  • Topic 2  : Nonlinear ultrasound monitoring of bone prostheses sealing and osseointegration (dental implants, hip prostheses). The long-term perspective of this topic is to implement new non-destructive methods in-vivo more reliable and sensitive than actual methods (linear acoustics methods, X-ray…) to the detection of early loosening of prosthesis. For this, several osseointegration and sealing models (with manifold damping and boundary conditions) have been studied experimentally using different nonlinear elasticity techniques.

Collaborations

  • Biomechanics  : David MITTON (Université de Lyon, F-69622, Lyon, France ; IFSTTAR, LBMC, F-69675 Bron ; Université Lyon 1, LBMC, F-69373 Lyon)
  • 3-D bone imaging : Françoise PEYRIN (CREATIS, Inserm U1044, CNRS 5220, INSA Lyon, Université Lyon I, Lyon, France, ESRF, Grenoble, France)
  • Nonlinear acoustics : Paul A. JOHNSON (Los Alamos National Laboratory (LANL), NM, USA)

Publications

Other activity

  • Support engineer : As experimental engineer, I support research by developing and maintaining experimental setups : development of the nonlinear acoustics experimental setup of the laboratory ; development and validation of a new home-made scanning acoustics microscope (200MHz) ; development of ultrasonic experimental device dedicated to microbubble characterization. Besides, I work on specific problems according to user needs (programming issues, transducers characterization, digital acquisition card selection...)

Price - Distinction

  • 2013 : Crystal Price. The Crystal of CNRS, established in 1992, annually honors engineers, technicians and administrative staff. It rewards those who, by their creativity, technical skill and sense of innovation,contribute to the advancement of knowledge and excellence of French research.

Education

  • 2008-2012 PhD, Biomechanics and Acoustics, Université Pierre & Marie Curie (France). Title : Bone microdamage assessment by Nonlinear Resonant Ultrasound Spectroscopy (NRUS). Toward a quantitative measurement. Advisor : P. Laugier.
  • 2006-2007 Msc, Applied physics, Université Pierre & Marie Curie (France)
  • 2001-2002 Msc, Distributed Virtual Reality, Ecole Nationale d’Ingénieur (France).
  • 1996-2001 MSc, Biomedical engineering, Université de Technologie de Compiègne (France).

.

Haupert_JASA_2012 - 811.8 ko

Riviere_JAP_2010.pdf - 2.9 Mo

Riviere_JASAEL_2012. pdf - 504.7 ko

Riviere_JASA_2012.pdf - 792 ko

Renaud_JASA_2013.pdf - 3.1 Mo

Rupin_JJAP_2009.pdf - 248.8 ko

Grimal_MedicalEngiPhysics_2009.pdf - 629.1 ko

Dong Bone 2013 - 1001.8 ko

HAUPERT PLOS ONE 2014 - 1008.8 ko