title: Imprecise knowledge based design and development of titanium alloys for prosthetic applications.
abstract: Imprecise knowledge on the composition-processing-microstructure-property correlation of titanium alloys combined with experimental data are used for developing rule based models for predicting the strength and elastic modulus of titanium alloys. The developed models are used for designing alloys suitable for orthopedic and dental applications. Reduced Space Searching Algorithm is employed for the multi-objective optimization to find composition, processing and microstructure of titanium alloys suitable for orthopedic applications. The conflicting requirements attributes of the alloys for this particular purpose are high strength with low elastic modulus, along with adequate biocompatibility and low costs. The 'Pareto' solutions developed through multi-objective optimization show that the preferred compositions for the fulfilling the above objectives lead to β or near β-alloys. The concept of decision making employed on the solutions leads to some compositions, which should provide better combination of the required attributes. The experimental development of some of the alloys has been carried out as guided by the model-based design methodology presented in this research. Primary characterizations of the alloys show encouraging results in terms of the mechanical properties.
authors.affiliation: B.U. Institute of Engineering Bankura 722146, India. Electronic address: shu.datt@gmail.com.
authors.forename: S
authors.initials: S
authors.lastname: Datta
authors.affiliation: Department of Automatic Control and Systems Engineering The University of Sheffield, Sheffield S1 3JD, UK.
authors.forename: M
authors.initials: M
authors.lastname: Mahfouf
authors.affiliation: School of Engineering and Digital Arts University of Kent, Canterbury CT2 7NT, UK.
authors.forename: Q
authors.initials: Q
authors.lastname: Zhang
authors.affiliation: National Institute of Foundry and Forge Technology Hatia 834003, Ranchi, India.
authors.forename: P P
authors.initials: PP
authors.lastname: Chattopadhyay
authors.affiliation: School of Materials Science and Engineering Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711103, India.
authors.forename: N
authors.initials: N
authors.lastname: Sultana
mesh_terms: D000497:Alloys; D055119:Elastic Modulus; D008422:Materials Testing; D011474:Prosthesis Design; D014025:Titanium
chemical_list: D000497:Alloys; D014025:Titanium
keywords: Alloy design; Evolutionary algorithm; Multi-objective optimization; Orthopedic application; Rule based modeling; Titanium alloy