Understanding compressive deformation behavior of porous Ti using finite element analysis

Sandipan Roy; Niloy Khutia; Debdulal Das; Mitun Das; Vamsi Krishna Balla; Amit Bandyopadhyay; Amit Roy Chowdhury

doi:10.1016/j.msec.2016.03.066

Understanding compressive deformation behavior of porous Ti using finite element analysis

Mater Sci Eng C Mater Biol Appl. 2016 Jul 1:64:436-443. doi: 10.1016/j.msec.2016.03.066. Epub 2016 Mar 24.

Authors

Sandipan Roy¹, Niloy Khutia¹, Debdulal Das², Mitun Das³, Vamsi Krishna Balla⁴, Amit Bandyopadhyay⁵, Amit Roy Chowdhury⁶

Affiliations

¹ Department of Aerospace Engineering and Applied Mechanics, Indian Institute of Engineering Science and Technology, Shibpur, India.
² Department of Metallurgy and Materials Engineering, Indian Institute of Engineering Science and Technology, Shibpur, India.
³ Bioceramics and Coating Division, CSIR-Central Glass and Ceramic Research Institute, Kolkata, India. Electronic address: mitun@cgcri.res.in.
⁴ Bioceramics and Coating Division, CSIR-Central Glass and Ceramic Research Institute, Kolkata, India.
⁵ W. M. Keck Biomedical Materials Research Laboratory, School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164, USA.
⁶ Department of Aerospace Engineering and Applied Mechanics, Indian Institute of Engineering Science and Technology, Shibpur, India. Electronic address: arcbesu@gmail.com.

PMID: 27127074
DOI: 10.1016/j.msec.2016.03.066

Abstract

In the present study, porous commercially pure (CP) Ti samples with different volume fraction of porosities were fabricated using a commercial additive manufacturing technique namely laser engineered net shaping (LENS™). Mechanical behavior of solid and porous samples was evaluated at room temperature under quasi-static compressive loading. Fracture surfaces of the failed samples were analyzed to determine the failure modes. Finite Element (FE) analysis using representative volume element (RVE) model and micro-computed tomography (CT) based model have been performed to understand the deformation behavior of laser deposited solid and porous CP-Ti samples. In vitro cell culture on laser processed porous CP-Ti surfaces showed normal cell proliferation with time, and confirmed non-toxic nature of these samples.

Keywords: Biocompatibility; CP-Ti; Finite Element Analysis; LENS; Porous materials; Static loadings.

MeSH terms

Cell Line
Cell Proliferation*
Compressive Strength*
Finite Element Analysis
Humans
Osteoblasts / cytology
Osteoblasts / metabolism*
Porosity
Titanium / chemistry*
X-Ray Microtomography

Substances

Titanium