In this report we develop a complete mathematical model for a porous scaffold from nitinol (NiTi - intermetallic phase) with a shape memory effect (SME), fabricated layerwise via the selective laser sintering (SLS) process. The operation of the SME bio-fluidic MEMS involves such physical process as a heat transfer, a phase transformation with a temperature hysteresis, stress-strain and electrical resistance variations accompanied the phase transformation. The simulations were conducted for the electro- and a thermo- mechanical hysteresis phenomenon, during the SME in the porous nitinol structures of the cylinder shape, which allow to formulate a recommendations for SLS. Previously done the temperature evolution of electrical resistivity was compared with our present calculations as a function of the laser-processing parameters for three dimensional nitinol samples. This model can be used for an estimation of a drug delivery system route during a porous phase volume changing.
|Journal||Materials Research Society Symposium - Proceedings|
|Publication status||Published - 2013|
|Event||2013 MRS Spring Meeting - San Francisco, CA, United States|
Duration: 1 Apr 2013 → 5 Apr 2013
- Microelectro-mechanical (MEMS)