Filippo Maniero
DESIGN AND TENSILE TESTING OF 3D PRINTED MULTI-MATERIAL AND BIO-INSPIRED SPECIMENS THAT MIMIC THE MECHANICAL BEHAVIOR OF SOFT TISSUES.
Rel. Cecilia Surace, Mariana Rodriguez Reinoso, Oliver Grimaldo Ruiz. Politecnico di Torino, Corso di laurea magistrale in Ingegneria Biomedica, 2021
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Abstract
In this Thesis work, the 3D printing PolyJet technology was used to manufacture dog-bone-shaped multi-material specimens with bio-inspired pattern-embedded. The specimens were provided by Stratasys Ltd Company. This research work aimed to imitate and characterize the tendon and ligament behavior when these are subjected to uniaxial tensile strength while optimizing at the same time the tensile mechanical response of the multi-material specimen. The specimens were printed using the Stratasys J750 Digital Anatomy PrinterTM (DAP). The Agilus30 TM rubber-like material in different combinations of hardness Shore A scale (A50, A60, and A70) assigned to each pattern component was selected. First, specimens were produced with preliminary patterns based on regular fiber shapes (single and helical configuration).
Subsequently, a Finite Element Analysis was conducted to evaluate the proper arrangement of the pattern within the specimen
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