Abstract
Additive manufacturing has experienced remarkable growth in recent years due to the customisation, precision, and cost savings compared to conventional manufacturing techniques. In parallel, materials with great potential have been developed, such as PC-ISO polycarbonate, which has biocompatibility certifications for use in the biomedical industry. However, many of these synthetic materials are not capable of meeting the mechanical stresses to which the biological structure of the human body is naturally subjected. In this study, an exhaustive characterisation of the PC-ISO was carried out, including an investigation on the influence of the printing parameters by fused filament fabrication on its mechanical behaviour. It was found that the effect of the combination of the printing parameters does not have a notable impact on the mass, cost, and manufacturing time of the specimens; however, it is relevant when determining the tensile, bending, shear, impact, and fatigue strengths. The best combinations for its application in biomechanics are proposed, and the need to combine PC-ISO with other materials to achieve the necessary strengths for functioning as a bone scaffold is demonstrated.
Highlights
In parallel with the development of biocompatible materials, the technological evolution of additive manufacturing (AM) has made possible a beneficial approach between both fields, which has opened new horizons for applications related to biomechanics and biomedical engineering [1,2]
The higher strength is observed forwith samples with ration
The lowest fatigue strength was obtained in the specimens with the rasters at 90°, since samples have intralayer filaments parallel to the stress plane, which favours the crack to
Summary
In parallel with the development of biocompatible materials, the technological evolution of additive manufacturing (AM) has made possible a beneficial approach between both fields, which has opened new horizons for applications related to biomechanics and biomedical engineering [1,2]. This technological advance and transformations have attracted the attention of the health sector to AM, especially in those areas in which a high degree of personalisation of treatments and devices is decisive for its success. Many and various solutions have been successfully implemented, both internal and external treatment of bone defects remains a scientific challenge, as materials with adequate mechanical performance and favourable biological properties are required simultaneously [5].
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