Dr Christophe Pinna
Department of Mechanical Engineering
Senior Lecturer in Mechanical Engineering
+44 114 222 7831
Full contact details
Department of Mechanical Engineering
Sir Frederick Mappin Building
Mappin Street
Sheffield
S1 3JD
- Profile
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Christophe Pinna obtained his PhD from Ecole Polytechnique in France in 1997 in the field of fatigue and fracture. He joined the Department in 1998 as a post-doctoral research associate and started to work on the thermo-mechanical processing of metals. He became a research fellow the same year and then a lecturer in 2000. He was promoted to Senior Lecturer in 2008.
- Research interests
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Dr Pinna's research activities are in the fields of mechanics of materials, experimental mechanics and computational solid mechanics applied to the areas of the thermo-mechanical processing of metals (including forging, rolling and friction stir welding), composites, fatigue, damage and fracture as well as machining.
The work involves multi-scale experiments at both room and elevated temperatures using conventional as well as small-scale testing machines (tensile and bending inside a Scanning Electron Microscope).
Full-field strain measurement techniques including optical 3D Digital Image Correlation, Scanning Electron Microscopy-based Digital Image Correlation and microgrids generated using electron lithography are being used to quantify strain distributions in specimens as well as over representative areas of microstructures.
Modelling techniques involve finite element models (including implicit/explicit, arbitrary Langrangian-Eulerian and XFEM formulations) combined with cellular automata for damage modelling as well as crystal plasticity finite element models coupled with phase-field models for simulations of microstructure deformation and evolution (recrystallization and phase transformations including texture prediction).
Projects are funded through grants from EPSRC, the European Union and industry.
Current Research Projects
- Experimental and Numerical Study of the Impact Behaviour of Fibre Composites used in Aerospace Applications
- Fatigue Behaviour of Composite Laminates
- Modelling of the Mechanical Properties of Nano-Silica Carbon Fibre Reinforced Epoxy Composites
- Fracture of Automotive Advanced High Strength steels (Dual-Phase, Complex-Phase and TRIP steels)
- Multi-Scale modelling of the Fatigue and Fracture of Aerospace Aluminium Alloys
- Finite Element Modelling of Friction Stir Welding
- Cellular Automata Finite Element (CAFÉ) Modelling of Fracture
- Damage Characterisation of Al-Li Alloys and X100 Steels using 3D Digital Image Correlation and High Resolution Scanning Electron Microscopy
- Hot Damage of Free-Cutting Steels
- Deformation, Recrystallisation and Transformation Texture and Microstructure Modelling during the Thermo-Mechanical Processing of Metals
- Publications
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Books
Journal articles
- Impact damage characteristics of carbon fibre metal laminates : experiments and simulation. Applied Composite Materials. View this article in WRRO
- Non-intrusive measurement of strip thickness and roll-bite length in metal rolling. Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture. View this article in WRRO
- Analyzing the properties promoting shear bands and damage initiation in 3-point bending of ultra-high strength steel. Procedia Manufacturing, 50, 570-573.
- Do additive manufactured parts deserve better?. Fatigue & Fracture of Engineering Materials & Structures, 42(9), 2146-2154. View this article in WRRO
- Finite element modelling of surface defect evolution during hot rolling of Silicon steel. Journal of Materials Processing Technology, 268, 181-191. View this article in WRRO
- Machining distortion in asymmetrical residual stress profiles. Procedia CIRP, 82, 395-399. View this article in WRRO
- FE modelling of CFRP machining- prediction of the effects of cutting edge rounding. Procedia CIRP, 82, 59-64. View this article in WRRO
- Fatigue crack initiation in AA2024: A coupled micromechanical testing and crystal plasticity study. Fatigue and Fracture of Engineering Materials and Structures, 42(1), 321-338. View this article in WRRO
- Ageing of a polymeric engine mount investigated using digital image correlation. Polymer Testing, 71, 137-144. View this article in WRRO
- Materials characterisation and modelling on the small scale. Materials Science and Technology (United Kingdom), 34(13), 1529-1530. View this article in WRRO
- Ageing Simulation of a Hydraulic Engine Mount: a Data Informed Finite Element Approach. Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering. View this article in WRRO
- Deformation-Induced Microstructural Banding in TRIP Steels. Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 49(7), 2893-2906. View this article in WRRO
- Experimental and modelling study of fatigue crack initiation in an aluminium beam with a hole under 4-point bending. International Journal of Solids and Structures, 138, 87-96. View this article in WRRO
- Prediction of growth of jet fuel autoxidative deposits at inner surface of a replicated jet engine burner feed arm. Fuel, 214, 528-537. View this article in WRRO
- Surface defect evolution in hot rolling of high-Si electrical steels. Journal of Materials Processing Technology, 249, 302-312. View this article in WRRO
- 2D and 3D Finite Element Models for the Edge Trimming of CFRP. Procedia CIRP, 58, 233-238. View this article in WRRO
- An optical method for measuring surface roughness of machined carbon fibre-reinforced plastic composites. Journal of Composite Materials, 51(3), 289-302. View this article in WRRO
- Investigation of surface deposition in a simulated fuel injector feed arm with sudden expansion/contraction. Fuel, 186, 534-543. View this article in WRRO
- Hybrid-modelling of compact tension energy in high strength pipeline steel using a Gaussian Mixture Model based error compensation. Applied Soft Computing, 48, 1-12. View this article in WRRO
- Two-dimensional simulation of grain structure growth within selective laser melted AA-2024. Materials and Design. View this article in WRRO
- New Experimental Procedure for the Analysis of Micro-Scale Surface Damage at High Temperature. Experimental Mechanics, 56(6), 1063-1072. View this article in WRRO
- Machining of Carbon Fibre: Optical Surface Damage Characterisation and Tool Wear Study. Procedia CIRP, 45, 71-74. View this article in WRRO
- Damage in dual phase steel DP1000 investigated using digital image correlation and microstructure simulation. Modelling and Simulation in Materials Science and Engineering, 23(8). View this article in WRRO
- Assessment of crystal plasticity finite element simulations of the hot deformation of metals from local strain and orientation measurements. International Journal of Plasticity, 73, 24-38. View this article in WRRO
- Modelling impact damage in composite laminates: A simulation of intra- and inter-laminar cracking. Composite Structures, 114(1), 10-19.
- Interface cohesive elements to model matrix crack evolution in composite laminates. Applied Composite Materials, 21(1), 57-70.
- Failure mechanisms in DP600 steel: Initiation, evolution and fracture. Materials Science and Engineering A, 588, 420-431. View this article in WRRO
- Characterization of the High Temperature Strain Partitioning in Duplex Steels. EXPERIMENTAL MECHANICS, 53(2), 205-215.
- Damage Assessment of Composite Structures Using Digital Image Correlation. Applied Composite Materials, 1-16.
- Damage monitoring and analysis of composite laminates with an open hole and adhesively bonded repairs using digital image correlation. Composites Part B: Engineering, 53, 76-91.
- Void growth and coalescence modelling in AA2050 using the Rousselier model. International Journal of Damage Mechanics, 22(2), 219-237.
- Quantitative strain analysis of the large deformation at the scale of microstructure: comparison between Digital Image Correlation and Microgrid techniques. Experimental Mechanics. View this article in WRRO
- Using digital image correlation techniques for damage detection on adhesively bonded composite repairs. Advanced Composites Letters, 21(2), 51-57.
- Analysis of adhesively bonded repairs in composites: Damage detection and prognosis. Composite Structures.
- Modelling static recrystallisation textures using a coupled crystal plasticity-phase field technique. Materials Science Forum, 702-703, 663-666.
- Identification of modes of fracture in a 2618-T6 aluminum alloy using stereophotogrammetry. Materials Characterization, 62(12), 1141-1150.
- Modeling and Optimal Design of Machining-Induced Residual Stresses in Aluminium Alloys Using a Fast Hierarchical Multiobjective Optimization Algorithm. Materials and Manufacturing Processes, 26(3), 508-520.
- Local plastic strain evolution in a high strength dual-phase steel. MAT SCI ENG A-STRUCT, 527(18-19), 5026-5032. View this article in WRRO
- Strain evolution measurement at the microscale of a dual phase steel using Digital Image Correlation. Applied Mechanics and Materials, 24-25, 201-206. View this article in WRRO
- Determination of micro-scale plastic strain caused by orthogonal cutting. INT J MACH TOOL MANU, 48(2), 228-235. View this article in WRRO
- Measurement and prediction of deformation in plane strain compression tests of AA5182. MATER SCI TECH-LOND, 22(11), 1380-1386. View this article in WRRO
- Measurement of deformation gradients in hot rolling of AA3004. EXP MECH, 45(6), 517-525. View this article in WRRO
- View this article in WRRO
- Effect of roll pass schedule on through thickness texture development in Al-Mn alloy. MATER SCI TECH-LOND, 19(4), 477-482.
- Dynamic Modelling of a Hydraulic Engine Mount Including the Effects of Elastomer Ageing. SAE International Journal of Engines, 14(1), 99-114.
- View this article in WRRO
Chapters
- Low-velocity impact of composite laminates: Damage evolution, Dynamic Deformation, Damage and Fracture in Composite Materials and Structures (pp. 89-119). Elsevier
- Using a Correction Factor to Remove Machine Compliance in a Tensile Test on DP1000 Steel Validated with 2D Digital Image Correlation Technique, Progress in Engineering Technology III (pp. 113-123).
- Out-of-Plane Surface Deformation Measurement of Advanced High Strength Steel Using 3D DIC, Progress in Engineering Technology III (pp. 285-295).
- Low-velocity impact of composite laminates, Dynamic Deformation, Damage and Fracture in Composite Materials and Structures (pp. 117-146). Elsevier
- List of contributors, Dynamic Deformation, Damage and Fracture in Composite Materials and Structures (pp. xi-xii). Elsevier
- Fatigue Life Prediction in Aluminum Alloy 2618-T6 Using a Paris Law Modification, Fatigue of Materials III (pp. 239-250). Springer International Publishing
Conference proceedings papers
- Effect of the injection moulding fibre orientation distribution on the fatigue life of short glass fibre reinforced plastics for automotive applications. Procedia CIRP, Vol. 85 (pp 255-260). AMRC, Sheffield, UK, 10 October 2019 - 11 October 2019. View this article in WRRO
- Localized damage analysis for high strength S960 steel using micro-tensile testing and digital image correlation. Ubiquity Proceedings, Vol. 1(S1) (pp 16-16). Swansea, Wales, 10 July 2018 - 12 July 2018. View this article in WRRO
- Nonlinear Dynamics of Structures with Material Degradation. Journal of Physics: Conference Series, Vol. 744 (pp 012123-012123) View this article in WRRO
- View this article in WRRO
- View this article in WRRO
- 3D Digital Image Correlation (DIC) analysis in relation to damage development in third generation AA2050-T851 aluminium alloy. Journal of Physics: Conference Series, Vol. 382(012034). University of Glasgow, 29 August 2012 - 31 August 2012.
- Fatigue Life Prediction in Aluminum Alloy 2618-T6 Using a Paris Law Modification (pp 239-250)
- Impact damage characteristics of carbon fibre metal laminates : experiments and simulation. Applied Composite Materials. View this article in WRRO
- Research group
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Integrity of Materials and Structures Research Group
Four of Dr Pinna's PhD students who have graduated recently:
- Ghadbeigi, H., Metal cutting mechanics: investigation and simulation of deformation and damage mechanisms, 2010
- Salas-Zamarripa, A., Fatigue behaviour of an aluminium alloy used in Turbocharger compressor wheels, 2008
- Boldetti, C., High resolution strain measurements of Intra-granular deformation in structural materials at high temperature, 2006
- Hernandez-Castillo, L. E. , Determination of microscale deformation in hot worked metals, 2005
- Grants
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- KTP/TSB with Arnold Magnetic Technologies Ltd – Filament Winding, 2012-2014, £135k (PI)
- M2i (Materials innovation institute – The Netherlands) / Tata Steel – Advanced High Strength Steels, 2010-2013, £377k (PI)
- EPSRC, A new framework for hybrid through-process modelling, process simulation and optimisation in the metals industry, 2008-2012, £4.6m (CI)
- EPSRC platform grant, Modern metals processing: transfer of knowledge and core skills to new and emerging technologies, 2007-2012, £880k (CI)
- EU RFCS grant, Roll-Gap Sensors, 2009-2012, £115k (CI)
- BAE Systems Marine, Plastic strain analysis, 2009-2011, £211k (CI)
- EU Framework 6, COMPACT - A concurrent approach to manufacturing induced part distortion in aerospace components, 2005-2009, £279k (CI)
- EPSRC, Thermomechanical processing: metallurgy, mechanics and modelling, 2002-2007, £3.9m (CI)
- EPSRC first grant, High resolution strain measurements of intra-granular deformation in structural materials at high temperatures, 2003-2006, £122k (PI)
- Teaching activities
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- MEC313 Finite Element Techniques
- MEC6440 Advanced Finite Element Modelling