Browsing Biomedical Engineering (Scholarly Articles) by Author "Lohfeld, Stefan"
Now showing items 1-15 of 15
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Biomodels of bone: a review
Lohfeld, Stefan; Barron, Valerie; McHugh, Peter (Springer, 2005)In this paper, a definition of a biomodel is presented, based on which different specific types of biomodels are identified, viz., virtual biomodels, computational biomodels, and physical biomodels. The paper then focuses ... -
Computational modelling of ovine critical-sized tibial defects with implanted scaffolds and prediction of the safety of fixator removal
Doyle, Heather; Lohfeld, Stefan; Durselen, Lutz; McHugh, Peter (Elsevier, 2015-01-14)Computational model geometries of tibial defects with two types of implanted tissue engineering scaffolds, β-tricalcium phosphate (β-TCP) and poly-ε-caprolactone (PCL)/β-TCP, are constructed from µ-CT scan images of the ... -
Design and manufacturing of customised maxillofacial prostheses.
Serban, D.; Boyle, D.; Lohfeld, Stefan; McHugh, Peter E.; Peckitt, N. (Elsevier, 2003-04-28)Customised implants created by Computer-Assisted Surgery (CAS) techniques and used in maxillofacial reconstruction indicate improved outcomes over conventional techniques. ‘‘Non-functional’’ multistaged procedures are ... -
Effect of hydroxyapatite on biodegradable scaffolds fabricated by SLS
Lohfeld, Stefan (Trans Tech Publications Ltd., 2009)Selective laser sintering (SLS) has the potential to fabricate bioresorbable polymer / ceramic composite scaffolds with pre-designed external and internal architecture that can be used for bone tissue engineering applications. ... -
Evaluating the effect of increasing ceramic content on the mechanical properties, material microstructure and degradation of selective laser sintered PCL/b-TCP materials
Doyle, Heather; Lohfeld, Stefan; McHugh, Peter E. (Elsevier, 2015-06-06)Orthopaedic scaffold materials were fabricated from polycaprolactone (PCL) and composite PCL β-tricalcium phosphate (PCL/β-TCP) powders using selective laser sintering (SLS). Incorporating β-TCP particles is ... -
Evaluation of a multiscale modelling methodology to predict the mechanical properties of PCL/β-TCP sintered scaffold materials
Doyle, Heather; Lohfeld, Stefan; McDonnell, Pat; McHugh, Peter E. (Springer Verlag, 2014-12-02)A multiscale modelling methodology to predict the macroscale stiffness of selective laser sintered polycaprolactone (PCL)/β-tricalcium phosphate (β-TCP) materials is evaluated. The relationship between a micromechanics-evaluated ... -
Experimental mechanical testing of Poly (l-Lactide) (PLLA) to facilitate pre-degradation characteristics for application in cardiovascular stenting
Bobel, Anna C.; Lohfeld, Stefan; Shirazi, Reyhaneh Neghabat; McHugh, Peter E. (Elsevier, 2016-07-19)Next-generation stents made from Biodegradable Polymers (BPs) aim to address the long-term risks (i.e. late restenosis and in-stent thrombosis) associated with both Bare Metal Stents and Drug Eluting Stents, whilst aiming ... -
Fabrication, mechanical and in vivo performance of polycaprolactone/tricalcium phosphate composite scaffolds
Lohfeld, Stefan; Cahill, Senan; Barron, Valerie; McHugh, Peter (2012)This paper explores the use of selective laser sintering (SLS) for the generation of bone tissue engineering scaffolds from polycaprolactone (PCL) and PCL/tricalcium phosphate (TCP). Different scaffold designs are generated, ... -
Improving the finite element model accuracy of tissue engineered scaffolds produced by selective laser sintering
Lohfeld, Stefan; Cahill, Senan; Doyle, Heather; McHugh, Peter E. (Springer Verlag, 2015-01-13)In bone tissue engineering, both geometrical and mechanical properties of a scaffold play a major part in the success of the treatment. The mechanical stresses and strains that act on cells on a scaffold in a physiological ... -
Investigation of the mechanical interaction of the trabecular core with an external shell using rapid prototype and finite element models
Mc Donnell, Patricia E.; Harrison, Noel M.; Lohfeld, Stefan; Kennedy, Oran; Zhang, Y.; McHugh, Peter E. (Elsevier, 2009-04-05)The mechanical properties of vertebral bone have been widely studied with the ultimate goal of improving fracture risk prediction. However, the mechanical interaction between the cortical shell and the trabecular core is ... -
A method to fabricate small features on scaffolds for tissue engineering via selective laser sintering
Lohfeld, Stefan; Tyndyk, M.A.; Cahill, S.; Flaherty, N.; Barron, Valerie; McHugh, Peter (2010)Purpose:Selective laser sintering (SLS) is a rapid prototyping technique applied to produce tissue-engineering scaffolds from powder materials. The standard scanning technique, however, often produces struts of extensive ... -
Oxidation behaviour of particle reinforced MoSi2 composites at temperatures up to 1700 °C, Part I: Literature Review
Lohfeld, Stefan; Schütze, M. (Wiley, 2005-02-04)In the first part of this paper the results of a literature review are presented. An overview of the oxidation behaviour in air and in combustion environments of both pure MoSi2 and MoSi2 composites in the temperature range ... -
Oxidation behaviour of particle reinforced MoSi2 composites at temperatures up to 1700°C
Lohfeld, Stefan; Schütze, M.; Böhm, A.; Güther, V.; Rix, R.; Scholl, R. (Wiley, 2005-04-04)The topic Oxidation behaviour of particle reinforced MoSi2 composites at temperatures up to 1700°C is discussed in a three part publication. In the first part of this paper a literature survey on the oxidation ... -
Oxidation behaviour of particle reinforced MoSi2 composites at temperatures up to 1700°C. Part II: Initial screening of the oxidation behaviour of MoSi2 composites
Lohfeld, Stefan; Schütze, M.; Böhm, A.; Güther, V.; Rix, R.; Scholl, R. (Wiley, 2005-03-01)In the first part of this paper a literature survey on the oxidation behaviour of MoSi2 and MoSi2 composites has been given. The present second part reports about the experimental results from oxidation tests with ... -
Selective laser sintering of hydroxyapatite/poly-epsilon-caprolactone scaffolds
Lohfeld, Stefan (2010)Selective laser sintering (SLS) enables the fabrication of complex geometries with the intricate and controllable internal architecture required in the field of tissue engineering. In this study hydroxyapatite and ...