Investigation on mechanical properties of additive manufactured bone scaffold

Yee, Sze Ling (2017) Investigation on mechanical properties of additive manufactured bone scaffold. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Bone scaffold is made through the process of Additive Manufacturing (AM) Technologies due to its advantages of design complexity and parts consolidation. Additive manufactured bone scaffold used to replace damage part on the bone as it provides a temporary structural framework for development of tissue. Additive manufactured bone scaffold able to solve bone disorder problem since the cases of bone disorder expected to double up in year 2020. The development of bone scaffold also helps to decrease the rejection issue which normally rejected by recipient’s own immune system after transplantation process. Since bone scaffold has a high demand in biomedical field, so this project was proposed with four designs of bone scaffold and simulation together with mechanical testing have been done to choose the best structure and material of bone scaffold which performed the best mechanical properties. After undergone those testing, Design 3 scaffold with square shape, 0.4mm pore size and fabricated with PLA is selected among others designs due to its high value of stress. High value of stress implies that the scaffold has high mechanical strength due to the high amount of force it can withstand. This is because scaffold with high strength allows easier surgical handling and reconstruction of hard bone tissues after implantation process. Therefore, design 3 is the most suitable structure while PLA is the best suitable material to fabricate scaffold.

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