Failure Analysis of an Additive Manufactured Porous Titanium Structure for Orthopedic Implant Applications

Wen Ming Chen; Sung Jae Lee; Peter Vee Sin Lee

doi:10.4028/www.scientific.net/MSF.863.45

Paper Titles

On the Bead Geometry of Dissimilar Joints between SA516Gr65 and 304L Produced by TIG and A-TIG Welding
p.19

Transition from Superplastic Behavior - Viscous Glide - Dislocation Climb - Power-Law Break down Regimes in Friction Stir Processed AA5083
p.23

Microstructural and Mechanical Characterization of Artificially-Aged Power Plant Steel
p.31

Effect of Composition on Tensile and Impact Properties of Tungsten-Based Heavy Alloy
p.40

Failure Analysis of an Additive Manufactured Porous Titanium Structure for Orthopedic Implant Applications
p.45

Friction and Wear of Commercially Pure Titanium with Different Microstructure from the View Point of Thermodynamic Analysis
p.50

Down Milling Cutting Parameters Optimization Utilizing the Two Level Full Factorial Design Approach
p.57

Electrochemical Corrosion of As-Cast and Annealed Zr₄₈Cu₃₆Al₈Ag₈ BMG in 0.1 M NaCl Solution
p.65

Elastic Properties of Thulium Doped Zinc Borotellurite Glass
p.70

HomeMaterials Science ForumMaterials Science Forum Vol. 863Failure Analysis of an Additive Manufactured...

Failure Analysis of an Additive Manufactured Porous Titanium Structure for Orthopedic Implant Applications

Abstract:

Porous metallic biomaterials produced using additive manufacturing technologies have gained popularity in orthopaedic implant applications. Porous metals provide enhanced biological anchorage for the bone tissue surrounding implants, and to promote rapid bone ingrowth. However, fragility associated with highly-porous metals is still a major concern. Standard mechanical testing yields merely structural parameters (i.e. stiffness and strength), but infers nothing about local strains in the micro-architecture such as struts. This study aims to develop a technique applicable for direct measurement of strain in porous titanium (Ti) structures. A low rigidity lattice Ti sample was specifically designed and fabricated using the Selective Laser Melting (SLM) technology. A novel compression test was performed, in which the surface lattice pattern of the Ti cube during the entire compression process was captured. Customized Matlab code was then used to compare lattice images in the unloaded and loaded states to compute strains. The results of full-field strain calculations were presented to demonstrate the capacity of the method. The characterization of localized strains from experiments can aid in the understanding of the mechanics of porous Ti structures, the relationship between microstructures and overall mechanical property, and the interpretation of failure patterns observed in complicated microstructures such as strut.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Materials Science Forum (Volume 863)

Pages:

45-49

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.863.45

Citation:

Cite this paper

Online since:

August 2016

Authors:

Wen Ming Chen*, Sung Jae Lee, Peter Vee Sin Lee

Keywords:

Additive Manufacturing, Failure Mechanisms, Metallic Biomaterials, Porous Structure

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

* - Corresponding Author

References

[1] M. Long, H. Rack, Titanium alloys in total joint replacement-a materials science perspective, Biomaterials. 19 (1998) 1621–39.

DOI: 10.1016/s0142-9612(97)00146-4

Google Scholar

[2] Y. Ahn, W. -M. Chen, K. Lee, K. Park, S.J. Lee, Comparison of the load-sharing characteristics between pedicle-based dynamic and rigid rod devices, Biomed. Mater. 3 (2008) 044101.

DOI: 10.1088/1748-6041/3/4/044101

Google Scholar

[3] R. Huiskes, H. Weinans, B. van Rietbergen, The relationship between stress shielding and bone resorption around total hip stems and the effects of flexible materials, Clin. Orthop. Relat. Res. 274 (1992) 124–34.

DOI: 10.1097/00003086-199201000-00014

Google Scholar

[4] S. Goldstein, The mechanical properties of trabecular bone: dependence on anatomic location and function, J. Biomech. 20 (1987) 1055–61.

DOI: 10.1016/0021-9290(87)90023-6

Google Scholar

[5] J. Kadkhodapour, H. Montazerian, Failure mechanisms of additively manufactured porous biomaterials: Effects of porosity and type of unit cell, J. Mech. Behav. Biomed. Mater. 50 (2015) 180-91.

DOI: 10.1016/j.jmbbm.2015.06.012

Google Scholar

[6] W. Tong, Detection of plastic deformation patterns in a binary aluminum alloy, Exp. Mech. 37 (1997) 452–459.

DOI: 10.1007/bf02317313

Google Scholar

[7] S. Amin Yavari, J. van der Stok, H. Weinans, and A.A. Zadpoor, Full-field strain measurement and fracture analysis of rat femora in compression test, J. Biomech. 46 (2013) 1282–1292.

DOI: 10.1016/j.jbiomech.2013.02.007

Google Scholar

[8] E.M.C. Jones, M.N. Silberstein, S.R. White, and N.R. Sottos, In Situ Measurements of Strains in Composite Battery Electrodes during Electrochemical Cycling, Exp. Mech. 54 (2014) 971–985.

DOI: 10.1007/s11340-014-9873-3

Google Scholar