MRI-Compatible Piezoelectric Actuator
Y. Bernard1*, R. Khairi1, A. Razek1, M. Poirier-Quinot2, J-C. Ginefri2, R-M. Dubuisson2
1GeePs, UMR 8507, CentraleSupelec, UPMC, Univ Paris-Sud,
11 rue Joliot-Curie, Gif Sur Yvette, France
2IR4M, UMR 8081, Univ Paris-Sud
Campus d'Orsay Bat 220, Orsay, France
The MRI employs an extreme static magnetic field (1-7 Tesla), gradient magnetic fields and electromagnetic radio frequency pulses. In this particular environment, classical electromagnetic actuators, generally based on ferromagnetic and conductor, cannot work correctly. The work is started with a numerical simulation. The MRI environment is presented using a finite element approach. Different piezoelectric materials and structures are then introduced into this environment to determine the optimal configuration. This work is completed with an experimental validation using a standard hospital MRI (static field of 1.5 T and radio frequency field of 63.9 MHz). Finally, the simulation and experiment results are used to give some recommendations in the design of MRI-compatible piezoelectric actuator.
ACTUATOR 2016 Manuscript P 58
Publication date: 01/06/2016
Manuscript P 58 published in Conference Proceedings ACTUATOR 2016
El vendedor asume toda la responsabilidad de esta entrada.