Academics > Undergraduate Degree Programs > College of Engineering > COE Department > Mechanical Engineering > Senior Design Projects List > Torsional property of Nano Structured Titanium for use in Biomedical Application
Torsional property of Nano Structured Titanium for use in Biomedical Application

Project Overview

  • Early uses of biomaterials

    In the early stages of arthroplastic surgery, stainless steel (316L) was the preferred material for biomedical uses. Mainly because of its availability and ease of processing. One major issue accompanied with stainless steel is that high modulus compared to the bone modulus. This big difference in the module has major effects on bones because bones need stresses to live. Knowing that the material with a higher module will carry most of the load, the need arises for other materials offering better properties and a lower module. People used titanium alloys in biomedical applications and it is considered to be the most attractive metallic material. Titanium and its alloys, as one of the important biomaterials for orthopedic, have been tremendously used because of their good mechanical properties as well as its excellent corrosion resistance and adequate biocompatibility.
  • Titanium alloys in biomedical

    Ti-6Al-4V alloys play the main role in the biomedical applications for their good mechanical properties and corrosion resistance. However, their elastic modulus is more than that of human bone resulting in the problem of “stress-shielding” or osteopenia. The stress shielding effect which forms from the variance of elastic modulus between human bones and implant materials causes a reduction in bone density and results in the disassembling of implants in the long-term. In addition, the toxic vanadium (V) element in the Ti-6Al-4V alloy also creates toxic ion release near the implanted area.
    The uses of titanium alloys in biomedical applications are critical and at a certain age, it may need some revision surgeries. Titanium can be used as an implant for hip, knee, and shoulder replacements. It is estimated that the number of total hip and knee replacements will rise by the end of the year 2030.
  • Economic value of biomaterials

    When people get older that means that the need of titanium is going to rise and this kind of operation will cost a lot which leads to a strong business in the future that will attract a lot of traders to invest in this field. The population is increasing all over the world and if we focus in the provided date from the US that a lot of hip replacements is done by the end of the year 2000 and it is estimated that the numbers are going to increase by the year of 2030. In addition a lot of people are involved to do revisions of previous hip replacements. Usually people below the age of 65 there are a 30% of them that need hip replacements. However, people over the age of 65 have a life expectancy of 17.9 years. In addition, female patients at the age of 65 have a life expectancy of 19.2 years. Most of the people at age of 65 will require at least one revision surgery.

Project Objectives

The project aims to tackle some key features in order to ensure its success, these features are as follows.
  • Production of commercially pure titanium (cp-ti) using ECAP.
  • Machining of the nano-structured Titanium.
  • Simulation of ECAP cp-ti for the torsion test.
  • Verification of Finite Element Module (F.E.M.) analysis through test.
  • Torsion test using standard.
  • Comparison of F.E.M. and tests.


Final Report

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