stefanm3

Experience

• Founder and Biomedical Engineer (R&D) Enfebiome · Freelance May 2025 – Present 6 mos Bucharest, Bucharest, Romania - Independent research and development activity in applied biomechanics and computational modeling.
  - Project example: conducted vibrational analysis of 3D-printed orthoses (PETG and PLA) in collaboration with a PhD researcher and academic partners, combining in vitro testing with in silico simulations to evaluate dynamic response.
• Biomedical Engineer, R&D Nuvola (GEO Srl) · Full-time Nov 2023 – Apr 2025 1 yrs 5 mos San Cesareo, Lazio, Italy - Contributed to the research and development of Nuvola® clear aligners and related medical devices, integrating clinical feedback with biomechanical simulations to optimize product performance and workflow efficiency across departments (from digital scans to final manufacturing).
  - Developed and validated finite element models using PETG polymer with a hyper-viscoelastic formulation to simulate the periodontal ligament’s time-dependent response (in FEBio); results are included in the preprint currently under review at Progress in Orthodontics (https://www.researchsquare.com/article/rs-7386790/v1).
• Biomedical Engineer, R&D Incite Medical Engineering · Full-time Jan 2023 – Aug 2023 7 mos Bucharest, Bucharest, Romania - Involved in R&D activities for Class III cardiovascular catheter-based devices, covering the full development cycle from design to functional validation.
  - Performed mechanical testing including tensile, compression, buckling, and three-point bending analyses as well as FEA (Solidworks and Abaqus) to assess device performance and reliability.
• Startup partnership Novalimb · Contract Mar 2022 – Oct 2022 7 mos Lazio, Italy Developed advanced finite element models for transtibial prosthetic sockets using Abaqus. The study involved:
  - Material modeling of hyperelastic polymers and elastomers (e.g., silicone liners, EVA, and biological tissues such as ligaments, skin, and muscle).
  - Thin laminate / multiscale analysis for cubic-symmetry polymers and metal alloys.
  - Nonlinear contact and high-friction interfaces between socket components and stump tissues.
  - Load cases up to half and full body weight for optimization of comfort parameters.
  - Results contributed to identifying new lower-limb prosthetic socket designs and improving interface performance.