Porous design of orthopaedic implants affords the advantages of minimizing stress shielding and improving the osseointegration and long-term stability. However, the marked error in the manufactured porous structure relative to the designed model yields limited application of the porous design. This study aimed to develop a methodology to derive the relationship between the porosity, the structural characteristic parameters and the mechanical properties of a typical structural unit, to lay the foundation of a porous structural design for 3D-printed implants with gradient modulus. Mathematical expressions related to porosity were determined based on various parametrical characteristics of porous units; the effective modulus of such a porous structure was studied under variable axial loading by using finite element analysis to gain insight into the anisotropic properties of the porous structure, and to evaluate the effects of parametrical variation on the aforementioned properties. For validation purposes, samples were manufactured via selective laser melting (SLM) 3D printing technology and mechanically tested. Results indicated that porous design can reduce the effective modulus of implants by 75–80%. A general methodology was developed for evaluating BCC structural units to determine design parameter correlations, the porosity and the effective modulus of the structure.
Materials & design – Elsevier
Published: Nov 5, 2017
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera