Dr Hui Long

BEng, MSc, PhD, CEng, FIMechE, FHEA

Reader in Mechanical Engineering

Department of Mechanical Engineering
Sir Frederick Mappin Building
Mappin Street
Sheffield
S1 3JD
UK

Telephone: +44(0)114 2227759

Profile

Dr Long joined the University of Sheffield as a Reader in 2012. Before this she was a senior lecturer at Durham University, where she worked from 2003 to 2012. Dr Long received her BEng, MSc and PhD degrees in Mechanical Engineering from Chongqing University in China. She then worked as a lecturer and then an associate professor in the State Key Laboratory of Mechanical Transmissions, China, for nine years. From 1996 to 2003 she worked as a research associate and research fellow at the University of Strathclyde, the University of Wales Swansea and Brunel University.

Research Areas

Dr Long's current research is centred on two broad areas, wind energy and advanced manufacturing technology. Within the area of wind energy her work has been focused on investigating wind turbine gearbox reliability, stochastic loading, statistical characteristics of operational conditions and their effects on premature failures of key mechanical components.

In the area of manufacturing, her work has involved the numerical modelling of metal forming processes, including extrusion and spinning, and welding processes using thermo-elastic-plastic finite element methods. The aim is to prevent material failures by optimising the process design and to achieve a better product quality and dimensional accuracy.

Current Research Themes

Wind turbine technology:

Stochastic loading and statistical characteristics of wind turbine field operational conditions;
Reliability-centered design and failure analysis for wind turbine gearboxes;
Probabilistic finite element modelling of gear tooth surface micropitting;
Surface/subsurface fatigue damage analysis and modelling of wind turbine gearbox bearings.

Advanced manufacturing technology:

Non-linear finite element analysis and modelling of metal forming and welding processes;
Process optimisation for material failure prevention in metal spinning;
Uncertainty analysis of process conditions to control dimensional accuracy.

Research Grants

Current and Recent Research Grants:

New material processing technologies for a sustainable future (MatProFuture). EU Marie Curies IRSES, 2013-2017, PI.
Advanced design methodologies for wind turbine gearboxes - Visiting Fellowship of Chongqing University. Ministry of Education, China, 2010-2013, PI.
Future reliable renewable energy conversion systems and networks. EPSRC, 2009-2012. Co-I.
Design innovation for multidisciplinary engineering applications. The Royal Academy of Engineering, 2010-2012, PI.
Implementation and demonstration of SCADA-based wind turbine monitoring to improve reliability, EPSRC Impact, 2011-2012, PI.
Lightweight offshore wind turbine gearbox feasibility study. Northern Wind Innovation Project, 2010-2011, PI.
Reliability focused research on optimising wind energy systems design, operation and maintenance. EU FP7 Collaborative, 2008-2011, Co-I.
Wind turbine gearbox stochastic loading prediction for failure detection and prevention. Durham Energy Institute/One NorthEast, 2011, PI.
Effective experimentation and simulation techniques for metal spinning. TSB KTP, 2008-2010, PI.

Teaching:

MEC312 Advanced Mechanics of Solids

MEC330 Experiments and Modelling (Solid part)

Journal articles

Xia QX, Lai ZY, Long H & Cheng XQ (2013) A study of the spinning force of hollow parts with triangular cross sections. International Journal of Advanced Manufacturing Technology, 1-10.
Wang L & Long H (2013) Roller path design by tool compensation in multi-pass conventional spinning. Materials and Design, 46, 645-653.
Feng Y, Qiu Y, Crabtree CJ, Tavner PJ & Long H (2013) Monitoring wind turbine gearboxes. Wind Energy, 16(5), 728-740.
Al-Tubi IS & Long H (2012) Prediction of Wind Turbine Gear Micropitting under Variable Load and Speed Conditions Using ISO/TR 15144-1: 2010. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science.
Ou H, Wang P, Lu B & Long H (2012) Finite element modelling and optimisation of net-shape metal forming processes with uncertainties. Computers and Structures, 90-91(1), 13-27.
Xia Q, Cheng X, Long H & Ruan F (2012) Finite element analysis and experimental investigation on deformation mechanism of non-axisymmetric tube spinning. INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY, 59(1-4), 263-272.
Pell S & Long H (2012) A Study on Mechanics of Conventional Spinning using a Truncated Hemispherical Dome. Steel Research International, 1359-1362.
Greaves PG, Dominy RG, Ingram GL, Long H & Court R (2011) Evaluation of dual axis fatigue testing of large wind turbine blades. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 226(7), 1693-1704.
Wang L & Long H (2011) A study of effects of roller path profiles on tool forces and part wall thickness variation in conventional metal spinning. Journal of Materials Processing Technology, 211(12), 2140-2151.
Lu B, Ou H & Long H (2011) Die shape optimisation for net-shape accuracy in metal forming using direct search and localised response surface methods. Structural and Multidisciplinary Optimization, 1-17.
Wang L, Long H, Ashley D, Roberts M & White P (2011) Effects of the roller feed ratio on wrinkling failure in conventional spinning of a cylindrical cup. Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 225(11), 1991-2006.
Long H, Wu J, Matthew F & Tavner P (2011) Fatigue analysis of wind turbine gearbox bearings using SCADA data and miner's rule. European Wind Energy Conference and Exhibition 2011, EWEC 2011, 334-337.
Long H, Wu J & Firth A (2011) Improving gearbox design and analysis for offshore wind turbines. Applied Mechanics and Materials, 86, 309-312.
Wang L & Long H (2011) Investigation of material deformation in multi-pass conventional metal spinning. Materials and Design, 32(5), 2891-2899.
Feng Y, Qiu Y, Crabtree CJ, Long H & Tavner PJ (2011) Use of SCADA and CMS signals for failure detection and diagnosis of a wind turbine gearbox. European Wind Energy Conference and Exhibition 2011, EWEC 2011, 17-19.
Wang L, Long H, Ashley D, Roberts M & White P (2010) Analysis of Single-Pass Conventional Spinning by Taguchi and Finite Element Methods. STEEL RESEARCH INTERNATIONAL, 81(9), 974-977.
Firth A & Long H (2010) A design software tool for conceptual design of wind turbine gearboxes. European Wind Energy Conference and Exhibition 2010, EWEC 2010, 5, 3568-3578.
Feng Y, Tavner PJ & Long H (2010) Early experiences with UK round 1 offshore wind farms. Proceedings of Institution of Civil Engineers: Energy, 163(4), 167-181.
Wilkinson M, Hendriks B, Spinato F, Harman K, Gomez E, Bulacio H, Roca J, Tavner P, Feng Y & Long H (2010) Methodology and results of the reliawind reliability field study. European Wind Energy Conference and Exhibition 2010, EWEC 2010, 3, 1984-2004.
Smolders K, Long H, Feng Y & Tavner P (2010) Reliability analysis and prediction of wind turbine gearboxes. European Wind Energy Conference and Exhibition 2010, EWEC 2010, 4, 2660-2682.
Feng Y, Tavner PJ, Long H & Bialek JW (2010) Review of early operation of UK round 1 offshore wind farms. IEEE PES General Meeting, PES 2010.
Tavner PJ, Higgins A, Long H, Feng Y & Arabian H (2010) Using an FMEA method to compare prospective wind turbine design reliabilities. European Wind Energy Conference and Exhibition 2010, EWEC 2010, 4, 2501-2537.
Long H, Gery D, Carlier A & Maropoulos PG (2009) Prediction of welding distortion in butt joint of thin plates. Materials and Design, 30(10), 4126-4135.
Hamilton S & Long H (2008) ANALYSIS OF CONVENTIONAL SPINNING PROCESS OF A CYLINDRICAL PART USING FINITE ELEMENT METHODS. STEEL RESEARCH INTERNATIONAL, 632-639.
Long H, Fanourakis A & Oliver P (2008) Case study in design: Generation of design knowledge for vehicle sub-frames based on Finite Element simulation. in Methods and Tools for Effective Knowledge Life-Cycle-Management, 2008 Springer-Verlag Berlin Heidelberg, 447-462.
Long H (2006) Quantitative evaluation of dimensional errors of formed components in cold backward cup extrusion. Journal of Materials Processing Technology, 177(1-3), 591-595.
Lin T, Li R, Long H & Ou H (2006) Three-dimensional transient sealing analysis of the bolted flange connections of reactor pressure vessel. Nuclear Engineering and Design, 236(24), 2599-2607.
Gery D, Long H & Maropoulos P (2005) Effects of welding speed, energy input and heat source distribution on temperature variations in butt joint welding. Journal of Materials Processing Technology, 167(2-3), 393-401.
Long H, Mynors DJ, Holland P & Standring P (2004) Knowledge-based process selection for rotationally symmetric and rotationally non-symmetric components in cold forming. Journal of Materials Processing Technology, 153-154(1-3), 338-345.
Long H, Zhang G & Luo W (2004) Modeling and analysis of transient contact stress and temperature of involute gears. Jixie Gongcheng Xuebao/Chinese Journal of Mechanical Engineering, 40(8), 24-29.
Long H & Maropoulos PG (2004) Dimensional error prediction of cold formed components in backward extrusion using finite element analysis. Proceedings of the IASTED International Conference on Applied Simulation and Modelling, 259-264.
Long H (2004) Dimensional errors of cold formed components using FE simulation. Journal of Materials Processing Technology, 151(1-3 SPEC. ISS.), 355-366.
Long H, Lord AA, Gethin DT & Roylance BJ (2003) Operating temperatures of oil-lubricated medium-speed gears: Numerical models and experimental results. Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, 217(2), 87-106.
Holland P, Standring PM, Long H & Mynors DJ (2002) Feature extraction from STEP (ISO 10303) CAD drawing files for metalforming process selection in an integrated design system. Journal of Materials Processing Technology, 125-126, 446-455.
Long H, Mynors DJ, Holland P & Standring PM (2002) Forming feature representation and process selection in cold extrusion. Journal of Materials Processing Technology, 125-126, 456-463.
Long H & Balendra R (1998) Evaluation of elasticity and temperature effects on the dimensional accuracy of back-extruded components using finite element simulation. Journal of Materials Processing Technology, 80-81, 665-670.
Long H & Balendra R (1998) FE simulation of the influence of thermal and elastic effects on the accuracy of cold-extruded components. Journal of Materials Processing Technology, 84(1-3), 247-260.
Zhang G, Wang J, Long H & Yang N (1993) Study on the rolling cone enveloping hourglass worm gearing. Chinese Journal of Mechanical Engineering (English Edition), 1993, Vol. 6(4), 293-298.

Conferences

Long H & Al-Tubi I (2013) Effects of Operational Conditions on Wind Turbine Gear Micropitting. The European Wind Energy Association Conference 2013, 2013
Long H, Wu J & Tavner PJ (2012) Analysis of Statistical Loading Conditions of Wind Turbine Gearbox based on SCADA Data. The European Wind Energy Association Conference 2012, 2012
Wang L & Long H (2011) Investigation of Effects of Roller Path Profiles on Wrinkling in Conventional Spinning. Proceedings of the 10th International Conference on Technology of Plasticity, 2011, 554-559.
Long H, Wang L & Jagger P (2011) Tool Force Analysis in Multi-pass Conventional Spinning by Finite Element Simulation and Experimental Measurement. Proceedings of the 10th International Conference on Technology of Plasticity, 2011, 547-553.
Wang L & Long H (2010) Stress analysis of multi-pass conventional spinning. Proceedings of the 8th International Conference on Manufacturing Research, 2010, 186-191.
Long H & Hamilton S (2008) Finite Element simulation of effects of material deformation on thickness variation in conventional spinning. Proceedings of the 9th International Conference on Technology of Plasticity, 2008, 320-321.
Dai Y, Long H & Vogt O (2007) A cost model for early design of supply chain information systems. Proceedings of the 11th International Conference on Human Aspects of Advanced Manufacturing Agility and Hybrid Automation, 2007, 194-208.
Long H, Gery D & Maropoulos PG (2007) Welding temperature simulation using a moving distributed heat source model. Proceedings of the 4th Inter. Conf. on Digital Enterprise Technology, 2007, 287-296.
Long H, Mynors DJ, Holland & Standring P (2003) Knowledge based process selection for cold forming components. Proceedings of the International Conference on Advances in Materials and Processing Technologies, 2003, 511-514.
Holland P, Standring P, Long H & Mynors DJ (2002) The development of shape simulation software (SSS) for metal forming process optimization. Proceedings of the 7th International Conference for Technology of Plasticit, 2002, Vol. 1, 151-156.
Long H, Mynors DJ, Holland P & Standring P (2002) The route to automatic metal forming process selection. Proceedings of the 7th International Conference for Technology of Plasticity, 2002, Vol. 2, 1357-1362.
Mynors DJ, Long H, Standring P & Holland P (2001) Linking process selection and component design via CAD, 2001
Balendra R, Long H, ENGINEERS IM & ENGINEERS IM (1998) Prediction of geometrical accuracy of back-extruded components using FE simulation. INTERNATIONAL CONFERENCE ON FORGING AND RELATED TECHNOLOGY (ICFT '98), 1998(3), 183-190.
Long H, Qin D & Zhang G (1997) Error effects on load and stress of meshing gears with Finite Element method. Proceedings of International Conference on Mechanical Transmission, China Machine Press, China, 1997, 523-527.
Long H & Balendra R (1997) Finite Element simulation of temperature distribution in component and die during cold metal forming. Proceedings of 13th National Conference on Manufacturing Research, United Kingdom, 1997, 295-299.
Long H & Balendra R (1997) The influence of thermal and elastic effects of the accuracy of cold-formed components. Proceedings of 32nd International MATADOR Conference, Manchester, United Kingdom, 1997, 361-366.
Ou H & Long H (1995) Computation simulation of static and dynamic contact stresses of meshing gear teeth with Finite Element method. Proceedings of The 9th World Congress on the Theory of Machines and Mechanisms, Italy, 1995, Vol. 4, 2597-2601.
Long H & Zhang G (1994) Load and stress simulation of an involute spur gear in meshing process. Proceedings of MPT'94 Symposium on Motion and Power Transmission, Japan, 1994, 189-193.
Zhang G, Xue H, Long H, Kato M & Deng G (1994) The double involute gear with ladder shape of tooth. Proceedings of 1994 International Gearing Conference, United Kingdom, 1994, 507-512.
Long H & Zhang G (1992) Finite Element contact analysis of the rolling cone enveloping hourglass worm gearing. Proceedings of International Conference on Rotating Machine Dynamics, Italy, 1992