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Plasticity effects during the 4-point bending of intramedullary leg lengthening implants with telescopic structures
KTH, School of Information and Communication Technology (ICT), Materials- and Nano Physics, Material Physics, MF.
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2015 (English)In: M2D2015: PROCEEDINGS OF THE 6TH INTERNATIONAL CONFERENCE ON MECHANICS AND MATERIALS IN DESIGN, INEGI-FEUP , 2015, 893-904 p.Conference paper (Refereed)Text
Abstract [en]

A telescopic intramedullary leg lengthening implant during standard (ASTM F1264) four-point bend testing is analysed in this study. The structure of a telescopic implant is simulated using different finite element models in order to understand the ultimate bending behaviour. The surface morphology on the internal contact surfaces is also analysed using scanning electron microscopy and atomic force microscopy. The results show that the simulation of correct non-linear behaviour necessitates plastic material models and representative contacts between nested parts. Based on the microscopy analysis, the damage on the contact surfaces inside the locking mechanism of a real tested implant is not found critical in terms of probable crack nucleation sites.

Place, publisher, year, edition, pages
INEGI-FEUP , 2015. 893-904 p.
Keyword [en]
biomechanics, finite element analysis, atomic force microscopy
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-190695ISI: 000378595500169ISBN: 978-989-98832-3-9OAI: oai:DiVA.org:kth-190695DiVA: diva2:952586
Conference
6th International Conference on Mechanics and Materials in Design (M2D), JUL 26-30, 2015, P Delgada, PORTUGAL
Note

QC 20160815

Available from: 2016-08-15 Created: 2016-08-12 Last updated: 2016-08-15Bibliographically approved

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Besharat, ZahraRutland, Mark
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