Abstract
Bones in the human body are a natural composite material that can be fractured due to impact stress and excessive loads. Human bones become less dense and strong when age increases, thereby they become more susceptible to fracture. The present work aims to study the effect of adding nano-ceramic particles on the mechanical properties to fabricate four types of hybrids of Titanium dioxide (TiO2) and Alumina (Al2O3) reinforced polyetheretherketone (PEEK) biocomposites. The objective of this study is to develop and improve the biomechanical properties of the fabricated biomaterials to withstand the loads of the daily human activities. Modeling and analysis of femur bone biomechanics were implemented by using the SOLIDWORKS 17.0 and the finite element ANSYS 15.0 software programs. The response surface methodology (RSM) technique and the Design Expert 11.0 software program were used to improve and verify the results of biomechanical performance of the fabricated biocomposites. From the current research results, it was deduce that the maximum equivalent (von- Misses) and shear stresses on the modeled femur bone are 120,93 and 60,80 MPa. The tensile for modeling the fabricated 20 vol. % TiO2/5 vol. % Al2O3/PEEK biocomposite material is higher than the one of natural femur bone by 10%. The maximum strain energy and the maximum equivalent elastic strain were reduced by 20% and 26,09 %, respectively. The stress safety factor values increased in 5,81%, and the fatigue life for the fabricated biocomposite is more than 40,43%, when compared with natural femur bone material.
Highlights
Bones are natural composite living tissues supporting the softer parts of the human body (Maharaja et al, 2013)
The durability of biomaterials for prosthesis and orthopedic implants are of critical importance, mainly fabricated by using various alloys and metals to achieve the sufficient strength covered by the polymers biomaterials (Dhanopia and Bhargava, 2016)
These results show that the fatigue life for the fabricated biocomposite is 40,43 % more than that of the natural femur bone life
Summary
Bones are natural composite living tissues supporting the softer parts of the human body (Maharaja et al, 2013). They are approximately 60 % inorganic on a weight basis, 30 % organic, and 10 % water (Keaveny, Morgan and Yeh, 2004). Femur bone is the longest, strongest and heaviest bone in the human body with a length that is almost 26 % of the person height and a mass of about 0,455 kg (Popa, Gherghina, Tudor and Tarnita, 2006; Mughal, Khawaja and Moatamedi, 2015). Different ceramic materials like alumina (Al2O3), hydroxyapatite, zirconia (ZrO2), Ti6Al4V and Al2O3/Al FGM are widely researched for implant applications due to their good biocompatibility (Ahmed, Rahman and Adhikary, 2013; Reddy et al, 2016)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
