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Dr Paul Spencer

Dr Paul Spencer

BIOGRAPHY +

Dr Paul Spencer joined the IRC Polymer Engineering Laboratories in 2005, having previously worked in the Mechanics of Materials Group at Leicester University. His background is in Computational Solid State Physics, gaining his PhD from Loughborough University. Recently he has been working on a variety of academic and industrially-led research projects involving experimental and Finite Element investigations of polymeric materials at large deformations.

Research Interests:
- Finite Element Analysis: Abaqus user-defined materials, contact problems, non-linear analysis, large deformations, Python scripting.
- Mechanics of solid polymers: Oriented polymers, shape memory polymers, constitutive modelling.
- Polymer composites: Multi-phase systems, and numerical modelling of nano-reinforced polymer composites.
- Materials modelling techniques: Continuum mechanics, molecular models, multi-scale schemes, and Monte Carlo simulation.
- Solid phase polymer processing: Experimental, numerical and theoretical analysis of processes such as die-drawing.
- Polymer characterisation: Mechanical stress/strain/rate characterisation, image-based measurement and analysis of deformation behaviour at large strains.

Previous Projects:
- Experimental investigations and associated Finite Element modelling of Solid Phase orientation processes, in collaboration with industry.
- Modelling a production process for polymer gels, in collaboration with BASF.
- Predictive Finite Element tools for tibial tray design, in collaboration with Smith & Nephew.
- Advanced polymer materials for orthopaedic applications, in collaboration with the University of Leeds and Industry, funded by the Technology Strategy Board, UK.
- Finite Element implementation of history-dependent polymer models, in collaboration with the National Physical Laboratory and ANSYS Inc.
- Multiscale modelling of Polymer-Clay Nanocomposites, in collaboration with Oxford University and Queens University Belfast, funded by the EPSRC, UK.
- A variety of small projects working with local SMEs.
- Epitaxial growth and relaxation of semiconductor nanoparticles, at Leicester University.
- Numerical (quantum Monte Carlo) and theoretical studies of high-temperature superconductivity, at Loughborough University.

AWARDS AND RECOGNITION +

2009 Composite Award from the Institute of Materials, Minerals and Mining for the paper "Performance enhancement of polymer nanocomposites via multiscale modelling of processing and properties", Plastics, Rubber and Composites, 2008, Vol 37, pp113.

RECENT PUBLICATIONS +

- Nanoindentation analysis of oriented polypropylene: Influence of elastic properties in tension and compression, D Vgenopoulos, J Sweeney, C A Grant, G P Thompson, P E Spencer, P Caton-Rose, P D Coates, Polymer 151 (2018) pp. 197-207
- Application of activated barrier hopping theory to viscoplastic modelling of glassy polymers, John Sweeney, Paul Spencer, Dimitrios Vgenopoulos, Maksims Babenko, Florian Boutenel, Fin Caton-Rose, Phil Coates, Key Engineering Materials 651-653 (2015)
- Sweeney J and Spencer PE (2015): "The use of a new viscous process in constitutive models of polymers" Key Engineering Materials, Scientific.Net, 651 812-817.
- Micro-contact re-construction of adjacent carbon nanotubes in polymer matrix through annealing-induced relaxation of interfacial residual stress and strain, Dongxu Li, Guoxia Fei, Hesheng Xia, Paul E. Spencer, Philip D. Coates, J Appl Polymer Sci 132(33) (2015).
- Simulation of the plug-assisted thermoforming of polypropylene using a large strain thermally coupled constitutive model O'Connor, C.P.J. Martin, P.J. Sweeney, J. Caton-Rose, P. Spencer, P.E.; Journal of Materials Processing Technology (2013).
- The large strain response of polypropylene in multiaxial stretching and stress relaxation Sweeney, J. Caton-Rose, P. Spencer, P.E. Martin, P.J. Menary, G.; International Journal of Material Forming (2013).
- A material model for multiaxial stretching and stress relaxation of polypropylene under process conditions Sweeney, J. O'Connor, C.P.J. Spencer, P.E. Caton-Rose, P. Martin, P.J.; Mechanics of Materials (2012).
- C O'Connor, P Martin, G Menary, J Sweeney, P Caton-Rose, P E Spencer, Dvelopment of a constitutive model of PP for thermoforming, AIP conf Proc (2011) vol 1353 pp 874-879.
- P E Spencer and J Sweeney, Modelling of Polymer Clay Nanocomposites for a Multiscale Approach, Nano- and Micromechanics of Polymer Blends and Composites, J Karger-Kocsis and S Fakirov (Eds.), Hanser Verlag (2009).
- P E Spencer, R Spares, J Sweeney and P D Coats, Modelling the large strain solid deformation behaviour of polymer nanoclay composites, Mech Time-Depend matter 12 313-327 (2008).
- E Harken-Jones, L Figiel, P Spencer, R Abu-Zurayk, W Al-Shabib, V Chan, R Rajeev, K Soon, P Buckley, J Sweeney, G Menary, C Armstrong, H Assender, P Coates, F Dunne, T McNally, P Martin, Performance enhancement of polymer nanocomposites via multiscale modelling of processing and properties, Plastics, Rubber and Composites 37 113-123 (2008).
- S P A Gill, P E Spencer, A C F Cocks, Mixed KMC/continuum models for the evolution of rough surfaces, Inter Multiscale Computational Engineering, (2005), 3(2), pp.239-256.
- Concurrent multiscale kinetic Monte Carlo-continuum models for the evolution of solids via diffusion Gill, S.P.A. Spencer, P.E. 2007 Diffusion and Defect Data Pt.B: Solid State Phenomena 129 19-24 .
- Effect of electron-phonon interaction range on lattice polaron dynamics: A continuous-time quantum Monte Carlo study Spencer, P.E. Samson, J.H. Kornilovitch, P.E. Alexandrov, A.S. 2005 Physical Review B - Condensed Matter and Materials Physics, Phys Rev B 71, 184310 (2005). Arxiv preprint cond-mat/0407250, 2004.
- A hybrid continuum/kinetic Monte Carlo model for surface diffusion, S.P.A. Gill, P.E. Spencer, A.C.F. Cocks., Materials Science and Engineering A 01/2004; 365:66-72. DOI:10.1016/j.msea.2003.09.017 ยท 2.41 Impact Factor (2004).

Profile last updated on: 07-08-2018