Bio-inspired Structures for Better Integrity and Durability (BiS-BID)

Research project financed by UEFISCDI
contract nr. 55PCE/03.01.2025, PN-IV-P1-PCE-2023-1446
​Project manager: Prof. Liviu MARSAVINA
Implementation period: January 2025 - December 2028

About BiS-BID
The project will induce a paradigm shift in the way we think of fatigue design, by fully exploiting biomimetic and bio-inspiration as a driving force in the design process (main scientific objective). A new and low-cost approach will be developed for designing smart optimized structures ideally fatigueless (engineering objective).
ABSTRACT
The excellent mechanical properties of natural biomaterials have attracted intense attention regarding the strengthening and toughening mechanisms. Natural systems are made of a wide range of composite functional materials that are able to develop themselves to best fulfil the necessities of long-term survival in specific and sometimes, harsh conditions. Learning by Nature, translating and formalizing this knowledge to mathematical/mechanics/physics models is a virtuous path that can open completely new horizons in structural design revolutionizing the current state of the art making a jump up to now impossible to do. The project will induce a paradigm shift in the way we think of fatigue design, by fully exploiting biomimetic and bio-inspiration as a driving force in the design process. A new and low-cost approach will be developed for designing smart optimized structures ideally fatigueless. The aim of the project will be to improve the design of the components for improved integrity and durability. The focus will be in reducing the Stress Concentration Factor combining experiments with numerical simulations on solutions inspired from Nature.
From nature to innovation in structural integrity
​Our passion is to innovate

Prof. Liviu Marsavina

Project director

Prof. Filippo Berto

Senior Researcher

Prof. Calin Popa

Senior Researcher

Prof. Dan Șerban

Senior Researcher

Prof. Emanoil Linul

Senior Researcher

Dr. Radu Negru

Senior Researcher

Dr. Dan Stoia

Senior Researcher

Dr. Sergiu Galatanu

Postdoctoral Researcher

Dr. Cosmin Marsavina

Postdoctoral Researcher

Mr. Cosmin Popa

PhD Student

Mr. Mihai Marghitas

PhD Student


Journal papers

Journal papers

2025 1. M. Marghitas, C.-F. Popa, L. Marsavina, On the Size and Notch Effect in AM Photo-Polymerized Components, Fatigue and Fracture of Engineering Materials and Structures, 48(9), 3790-3804, 2025, https://doi.org/10.1111/ffe.70001 2. E. Linul, New insights into tailoring anisotropy-driven shell design for enhanced compression performance in additively manufactured structures, Progress in Additive Manufacturing, 1–16, 2025, https://doi.org/10.1007/s40964-025-01394-w. 3. C. Öhl, E. Linul, Microstructure-property-performance relationships in the orientation-driven vibrational behavior of LPBF AlSi10Mg specimens, Journal of Materials Research and Technology, 39, 8035-8048, 2025, https://doi.org/10.1016/j.jmrt.2025.11.137. 4. C Vălean, S.V. Galațanu, N.A. Sîrbu, E. Linul, The scale effect of FFF-printed Polylactic Acid parts under quasi-static compression, Proceedings of the Romanian Academy, Series A, 26 (3), 2025, 269–275, Doi: 10.59277/Pra-Ser.A.26.3.07. 2026 1. E. Valean, L. Marsavina L, SV Galatanu, P Foti, F. Berto, Are carbon fibres beneficial to improve mechanical and fracture properties of FDM printed composites?, Engineering Fracture Mechanics, 332, 111791, 2026, DOI: 10.1016/j.engfracmech.2025.111791 2. HG Kouchaki, MRM Aliha, L Marsavina, E Linul, N Choupani, MM Mirsayar, T Sadowski, Mixed-mode tensile and in-plane shear fracture analysis for PUR foams using two sub-sized short bend beam configurations, Theoretical and Applied Fracture Mechanics, 141 A, 105282, 2026, DOI10.1016/j.tafmec.2025.105282 3. G Murariu, L Marsavina, INFLUENCE OF PRINTING ORIENTATION AND NOTCH ANGLE ON SLA 3D PRINTED RESIN: A THEORY OF CRITICAL DISTANCES APPROACH, PROCEEDINGS OF THE ROMANIAN ACADEMY SERIES A-MATHEMATICS PHYSICS TECHNICAL SCIENCES INFORMATION SCIENCE, 27 (3), 275-285, 2026. 4. L Marsavina, MP Marghitas, C Marsavina, D D'Andrea, D Santonocito, G Risitano, FRATTURA ED INTEGRITA STRUTTURALE-FRACTURE AND STRUCTURAL INTEGRITY, 77, 107-119, 2026, DOI:10.3221/IGF-ESIS.77.08 5. C Popa, L Marsavina, C Marsavina, C Popa, Optimal shape determination of shear specimens using Machine Learning. Fracture and Structural Integrity, 20(78), 118–128, 2026. https://doi.org/10.3221/IGF-ESIS.78.07

Conference papers

Conference papers

2025 1. C. Sosdean, S. Piçarra, S.-V. Galatanu, L. Marsavina, Tensile Behavior of Romanian 'Țurcana' sheep wool waste-fibers: Influence of Body region, International Conference of Engineering Against Failure (ICEAF) Kalamata, Greece 22 - 25 June 2025. 2. S.-V. Galatanu, V. T. Popi , C.-F. Popa, L. Marsavina, Bending behavior of the 95% and 99% Alumina Ceramics, International Conference of Engineering Against Failure (ICEAF) Kalamata, Greece 22 - 25 June 2025. 3. L. Marsavina, M. Marghitas, D. D'Andrea, D. Santonocito, G. Risitano, Bio-inspired structures for energy efficiency, IGF-MedFract 3 Conference, Catania, Italy, 15-18 September 2025. 4. C.F. Popa, S.V. Galațanu, L. Marșavina, O. Pop, Effect of Raster orientation and notch insertion on fracture toughness of PETG, 1st Biennial ESIS-CSIC Conference on Structural Integrity (BECCSI 2025), Belgrade, Serbia, 25-28 November 2025. 2026 1. PM Margitas, L Marsavina, C Marsavina, D D’Andrea, D Santonocito, G Risitano, Bio-inspired structures for energy efficiency, Procedia Structural Integrity, 79, 348–353, 2026, DOI: 10.1016/j.prostr.2025.12.344 2. L Marsavina, Application of modern methods to assess the integrity of polymeric notched AM components, Vicenza, Italy, 18-20 February, 2026, Keynote speaker 3. L. Marsavina, E. Linul, SV Galatanu, A review of the influence of manufacturing parameters on fracture toughness of additively manufactured polymers, Eighth IJFatigue & FFEMS Joint Workshop "Characterisation of Crack/Notch Tip Fields" Sheffield, UK, 2-4 June 2026. Invited speaker 4. G Murariu, SV Galatanu, VT Popi, R Iridon, L Marsavina, Fracture behavior of pre-cracked 99% Alumina ceramics structures under flexural loading, 25th European Conference on Fracture, Athens, Greece, 6-11 September 2026.

Patents

Patents



  • Universitatea Politehnica Timisoara, Department of Mechanics and Strength of Materials, Blvd. M. Viteazu, Nr. 1, Timisoara, Romania