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Andrew Torrance
Fellow Emeritus, Mechanical & Manuf. Eng

Biography

Prof. Andrew Torrance graduated from Cambridge in 1968, then went to the lubrication group at Imperial College, London where he obtained a Ph.D. in 1971. After a year as a Research Assistant he moved to the laboratories of Total in Harfleur, France where he spent 2" years as Chef de Section frottement - usure. Returning to England, he spent 5 years as a Research Fellow in the Abrasive Machining Group at the University of Bristol before joining the teaching staff at Trinity College, Dublin in 1980, where he is now an Associate Professor and Fellow of the College. His main research interests are in abrasive machining, and the modelling of boundary friction and wear, and he is the author of some 70 papers on these subjects.

Publications and Further Research Outputs

Peer-Reviewed Publications

A. Lefebvre, F. Lanzetta, P. Lipinski, A.A. Torrance, Measurement of grinding temperatures using a foil/workpiece thermocouple, International Journal of Machine Tools & Manufacture, 2012 Journal Article, 2012 TARA - Full Text

De Pellegrin, D.V. , Torrance, A.A. , Haran, E., Wear mechanisms and scale effects in two-body abrasion , Wear, 266, (1-2), 2009, p13-20 Journal Article, 2009 DOI URL

Bareggi, A., O'Donnell,G.E., Torrance, A., Modelling and experimental analysis of high speed air jets used during metal cutting as a cooling technique, 3rd CIRP International Conference on High Performance Cutting - Micromachining, Dublin, Ireland, June 12,13th, edited by G. Byrne and G.E. O'Donnell , Vol. 1, 2008, pp337 - 346 Conference Paper, 2008

M. Roe & A.A. Torrance, Performance prediction of exfoliated graphite seals: 1. Determination of parameters and verification of model, Sealing Technol, 4, (April), 2008, p6 - 13 Journal Article, 2008

Lyons, O.F.P., Murray, D.B. and Torrance, A.A., , Air jet cooling of brake discs, Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 222, (6), 2008, p995-1004 Journal Article, 2008 DOI TARA - Full Text URL

M. Roe, and A.A.Torrance , The Surface Failure and Wear of Graphite Seals, Tribology International, 41, 2008, p1002 - 1008 Journal Article, 2008

O'Kelly B.C., Torrance A.A., West R.P., Burke M.J. and Boland F.M., Case study of an interdisciplinary problem-based engineering design course, Proceedings of the Sixth AECEF International Symposium on Civil Engineering Education in Changing Europe, Vilnius, Lithuania, 28th - 30th May, 2008, pp37 - 48 Conference Paper, 2008 URL TARA - Full Text

Bareggi, A., O'Donnell, G.E., Torrance, A., Modelling Thermal Effects in Machining using Finite Element Methods, 24th International Manufacturing Conference, Waterford, Ireland, 29th-31st August, edited by Phelan, J. , 2007 Conference Paper, 2007

O'Donovan, T. S., Murray, D. B. and Torrance, A. A., Jet heat transfer in the vicinity of a rotating grinding wheel, Journal of Mechanical Engineering Science, 220, (6), 2006, p837 - 845 Journal Article, 2006 DOI URL

Bareggi, A., Torrance, A., O'Donnell, G.E., Green cutting using supersonic air jets as coolant and lubricant during turning, The 4th International Conference on Manufacturing Research, Liverpool, UK, 5th-7th September, 2006, pp261 - 266 Conference Paper, 2006

T.S. O'Donovan, D.B. Murray and A.A. Torrance, Jet heat transfer in the vicinity of a rotating grinding wheel, Proceedings of the Institution of Mechanical Engineers Part C, 220, 2006, p1 - 11 Journal Article, 2006

O'Donovan, T. S., Murray, D. B. & Torrance, A. A., Impinging jet heat transfer in the transitional wall jet region, ASME Summer Heat Transfer Conference, San Francisco, 2005, ppHT2005 - 72451 Conference Paper, 2005 URL

Babic, D., Torrance, A.A. and Murray, D.B., Soap mist jet cooling of grinding processes, Key Engineering Materials, International Symposium on Advances in Abrasive Technology, St. Petersburg, June 2005, 291-292, 2005, pp239-244 Conference Paper, 2005

A.A.Torrance, A method for calculating boundary friction and wear, Wear, 258, 2005, p924 - 934 Journal Article, 2005

A.A. Torrance, Modelling Abrasive Wear, Wear, 258, 2005, p281 - 293 Journal Article, 2005

Babic, D.M., Murray, D.B. and Torrance, A.A., Mist jet cooling of a grinding process, International Journal of Machine Tools and Manufacture, 45, (10), 2005, p1171 - 1177 Journal Article, 2005 URL DOI

Babic, D., Murray, D.B. and Torrance, A.A., Control of grinding temperature by high speed air jets, Proceedings of ITSS II, Bled, Slovenia, 2004, pp8 Conference Paper, 2004 URL

O'Donovan, T. S., Murray, D. B. & Torrance, A. A., PIV measurements and convective heat transfer of an impinging air jet, 12th International Symposium of Applications of Laser Techniques to Fluid Mechanics, Lisbon, 12 - 15 July, 2004, pp9 Conference Paper, 2004

H. M. Kelly, P. B. Deasy, M. Busquet and A. A. Torrance, Bioadhesive, rheological, lubricant and other aspects of an oral gel formulation intended for the treatment of xerostomia, International Journal of Pharmaceutics, 278, 2004, p391 - 406 Journal Article, 2004

Petropoulos GP, Torrance AA, Pandazaras CN, Abbott curves characteristics of turned surfaces , INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE, 43, (3), 2003, p237 - 243 Journal Article, 2003

Walsh DG, Torrance AA, Tiberg J, Analytical evaluation of thermally induced residual stresses in ground components, PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE, 217, (5), 2003, p471 - 482 Journal Article, 2003

O'Donovan, T. S., Murray, D. B. & Torrance, A. A., Heat transfer to an obliquely impinging air jet, 8th UK National Heat Transfer Conference, Oxford, 2003 Conference Paper, 2003 TARA - Full Text

Máire Ní Ruaidhe and A. A. Torrance, Developing a finite element model of exfoliated graphite valve packings, Sealing Technology, 3, 2003, p6 - 9 Journal Article, 2003

TORRANCE, AA, THE EFFECT OF GRIT SIZE AND ASPERITY BLUNTING ON ABRASIVE WEAR, WEAR, 253, 2002, p813 - 819 Journal Article, 2002

M. Busquet and A.A.Torrance, A numerical slip-line field for the sliding cylinder problem, Wear, 241, 2000, p86 - 98 Journal Article, 2000

TORRANCE, AA, BADGER, JA, THE RELATION BETWEEN THE TRAVERSE DRESSING OF VITRIFIED GRINDING WHEELS AND THEIR PERFORMANCE, INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE, 40, 2000, p1787 - 1811 Journal Article, 2000

A.A.Torrance and J.A.Badger, The relation between the traverse dressing of vitrified grinding wheels and their performance, Intl. J of Machine Tool Manufacture Design and Research, 40, 2000, p1787 - 1811 Journal Article, 2000

BADGER, JA, TORRANCE, AA, A COMPARISON OF TWO MODELS TO PREDICT GRINDING FORCES FROM WHEEL SURFACE TOPOGRAPHY, INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE, 40, 2000, p1099 - 1120 Journal Article, 2000

GALLIGAN, J, TORRANCE, AA, LIRAUT, G, A SCUFFING TEST FOR PISTON RING/BORE COMBINATIONS PART I. STEARIC ACID LUBRICATION, WEAR, 236, 2000, p199 - 209 Journal Article, 2000

GALLIGAN, J, TORRANCE, AA, LIRAUT, G, A SCUFFING TEST FOR PISTON RING/BORE COMBINATIONS: PT. II. FORMULATED MOTOR LUBRICATION, WEAR, 236, 2000, p210 - 220 Journal Article, 2000

J. Galligan, A.A.Torrance and G. Liraut, A scuffing test for piston ring / bore combinations: Pt. II formulated motor lubrication, Wear, 236, 1999, p210 - 220 Journal Article, 1999

J. Galligan, A.A.Torrance and G. Liraut, A scuffing test for piston ring / bore combinations: Pt. I stearic acid lubrication, Wear, 236, 1999, p199 - 209 Journal Article, 1999

WALSH, D, TORRANCE, AA, INFLUENCE OF FORM ON SURFACE TEMPERATURES IN FORM GRINDING, PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE, 213, 1999, p601 - 611 Journal Article, 1999

TORRANCE, AA, GALLIGAN, J, LIRAUT, G, A MODEL OF THE FRICTION OF A SMOOTH HARD SURFACE SLIDING OVER A SOFTER ONE, WEAR, 212, 1998, p213 - 220 Journal Article, 1998

RICE, HJ, TORRANCE, AA, EIKELMAN, G, A MODEL OF STIFFNESS NON-LINEARITY IN FIBROUS MATERIAL DYNAMICS, JOURNAL OF SOUND AND VIBRATION, 212, 1998, 375 - 381 Miscellaneous, 1998

TORRANCE, AA, THE INFLUENCE OF SURFACE DEFORMATION ON MECHANICAL WEAR, WEAR, 200, 1997, p45 - 54 Journal Article, 1997

TORRANCE, AA, A SIMPLE DATUM FOR MEASUREMENT OF THE ABBOTT CURVE OF A PROFILE AND ITS FIRST DERIVATIVE, TRIBOLOGY INTERNATIONAL, 30, 1997, p239 - 244 Journal Article, 1997

YANG, Y, TORRANCE, AA, RODRIGUEZ, J, THE SOLAR HARDENING OF STEELS: EXPERIMENTS AND PREDICTIONS, SOLAR ENERGY MATERIALS AND SOLAR CELLS, 40, 1996, p103 - 121 Journal Article, 1996

TORRANCE, AA, BUCKLEY, TR, A SLIP-LINE FIELD MODEL OF ABRASIVE WEAR, WEAR, 196, 1996, p35 - 45 Journal Article, 1996

YANG, YY, TORRANCE, AA, OXLEY, PLB, MODELLING MECHANICAL WEAR PROCESSES IN METALLIC SLIDING FRICTION, JOURNAL OF PHYSICS D-APPLIED PHYSICS, 29, 1996, p600 - 608 Journal Article, 1996

TORRANCE, AA, MORGAN, JE, WAN, GTY, AN ADDITIVE'S INFLUENCE ON THE PITTING AND WEAR OF BALL BEARING STEEL, WEAR, 192, 1996, p66 - 73 Journal Article, 1996

YANG, YY, TORRANCE, AA, WEAR BY PLASTIC RATCHETTING - AN EXPERIMENTAL EVALUATION, WEAR, 196, 1996, p147 - 155 Journal Article, 1996

A.A.Torrance, Using Profilometry for the Quantitative Assessment of Tribological Function: PC Based Software for Friction and Wear Prediction, Wear, 181, 1995, p397 - 404 Journal Article, 1995

TORRANCE, AA, USING PROFILOMETRY FOR THE QUANTITATIVE ASSESSMENT OF TRIBOLOGICAL FUNCTION - PC-BASED SOFTWARE FOR FRICTION AND WEAR PREDICTION, WEAR, 181, 1995, p397 - 404 Journal Article, 1995

A.A.Torrance, The Calculation of Residual Stresses in Worn Surfaces, Proc. I. Mech E., 208, (F), 1994, p113 - 119 Journal Article, 1994

Y.Yang, A.A.Torrance and J.Rodriguez, The Solar Hardening of Steels, Materials World, 6, 1994, p320 Journal Article, 1994

BRENNER, N, TORRANCE, AA, WHEEL SHARPNESS MEASUREMENT FOR FORCE PREDICTION IN GRINDING, WEAR, 160, 1993, p317 - 323 Journal Article, 1993

TORRANCE, AA, THE STATISTICS OF THE EXTREMA OF SURFACES AS A MEANS OF ASSESSING THEIR MECHANICAL PERFORMANCE, WEAR, 156, 1992, p281 - 299 Journal Article, 1992

LACEY, P, TORRANCE, AA, THE CALCULATION OF WEAR COEFFICIENTS FOR PLASTIC CONTACTS, WEAR, 145, 1991, p367 - 383 Journal Article, 1991

HOWE, DP, MEE, M, TORRANCE, AA, WILLIAMS, JD, AL-PB-SI-IN BEARING ALLOY, CLIO-A JOURNAL OF LITERATURE HISTORY AND THE PHILOSOPHY OF HISTORY, 7, 1991, p330 - 333 Journal Article, 1991

D.P.Howe, M.Mee, A.A.Torrance and J.D.Williams, An Aluminium-Lead-Silicon-Indium Bearing Alloy, Materials Science and Technology, 7, 1991, p330 - 333 Journal Article, 1991

A.A.Torrance and J.-L.Metzger, Dry and Wet Grinding of Carbide with Electroplated Diamond Quills: pt.II Partition Model, Ind. Diamond Rev., 51, 1991, p14 - 19 Journal Article, 1991

J.-L.Metzger and A.A.Torrance, Dry and Wet Grinding of Carbide with Electroplated Diamond Quills: pt.I Experimental, Ind. Diamond Rev., 50, 1990, p296 - 303 Journal Article, 1990

MOALIC, H, FITZPATRICK, JA, TORRANCE, AA, A SPECTRAL APPROACH TO THE ANALYSIS OF ROUGH SURFACES, JOURNAL OF TRIBOLOGY-TRANSACTIONS OF THE ASME, 111, 1990, p359 - 363 Journal Article, 1990

LACEY, P, TORRANCE, AA, FITZPATRICK, JA, THE RELATION BETWEEN THE FRICTION OF LUBRICATED ROUGH SURFACES AND APPARENT NORMAL PRESSURE, JOURNAL OF TRIBOLOGY-TRANSACTIONS OF THE ASME, 111, 1990, p260 - 264 Journal Article, 1990

TORRANCE, AA, THE CORRELATION OF PROCESS PARAMETERS IN GRINDING, WEAR, 139, 1990, p383 - 401 Journal Article, 1990

MEE, M, TORRANCE, AA, A STUDY OF THE LUBRICATED WEAR OF PLAIN BEARING MATERIALS IN A ZDDP-CONTAINING LUBRICANT, WEAR, 128, 1988, p201 - 217 Journal Article, 1988

TORRANCE, AA, CHEMICAL AND MICROSTRUCTURAL CHANGES INDUCED IN BEARING STEEL BY ROLLING-CONTACT, WEAR, 122, 1988, p363 - 376 Journal Article, 1988

TORRANCE, AA, A 3-DIMENSIONAL CUTTING CRITERION FOR ABRASION, WEAR, 123, 1988, p87 - 96 Journal Article, 1988

TORRANCE, AA, AN APPROXIMATE MODEL OF ABRASIVE CUTTING, WEAR, 118, 1987, p217 - 232 Journal Article, 1987

MOALIC, H, FITZPATRICK, JA, TORRANCE, AA, THE CORRELATION OF THE CHARACTERISTICS OF ROUGH SURFACES WITH THEIR FRICTION COEFFICIENTS, PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE, 201, 1987, p321 - 329 Journal Article, 1987

TORRANCE, AA, STOKES, RJ, HOWES, TD, STEEL COMPOSITION EFFECTS ON GRINDABILITY AND ROLLING-CONTACT FATIGUE RESISTANCE OF BEARING STEELS, JOURNAL OF TRIBOLOGY-TRANSACTIONS OF THE ASME, 107, 1986, p496 - 500 Journal Article, 1986

TORRANCE, AA, DART, JM, A STUDY OF LUBRICATED ABRASIVE WEAR, WEAR, 110, 1986, p49 - 59 Journal Article, 1986

ALLEN K, TORRANCE AA, COATINGS TO IMPROVE THE WEAR-RESISTANCE OF A LOW-ALLOY STEEL, TRIBOLOGY INTERNATIONAL, 19, (3), 1986, p123 - 127 Journal Article, 1986

MONAGHAN, JM, TORRANCE, AA, AN UPPER-BOUND SOLUTION FOR CLOSED-DIE FORGING OF HEXAGONAL AND SQUARE WORKPIECES, INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE, 24, 1984, p225 - 240 Journal Article, 1984

MONAGHAN, JM, TORRANCE, AA, AN ANALYSIS OF DIE FILLING IN A FORGING OPERATION, JOURNAL OF STRAIN ANALYSIS FOR ENGINEERING DESIGN, 19, 1984, p237 - 247 Journal Article, 1984

MONAGHAN, JM, TORRANCE, AA, PLANE-STRAIN COINING, METALS TECHNOLOGY, 11, 1984, p20 - 28 Journal Article, 1984

TORRANCE, AA, STOKES, RJ, HOWES, TD, THE EFFECT OF GRINDING CONDITIONS ON THE ROLLING-CONTACT FATIGUE LIFE OF BEARING STEEL, MECHANICAL ENGINEERING, 105, 1983, p68 - 73 Journal Article, 1983

TORRANCE, AA, AN EXPLANATION OF THE HARDNESS DIFFERENTIAL NEEDED FOR ABRASION, WEAR, 68, 1981, 263 - 266 Miscellaneous, 1981

TORRANCE AA, A NEW APPROACH TO THE MECHANICS OF ABRASION, WEAR, 67, (2), 1981, p233 - 257 Journal Article, 1981

TORRANCE AA, THE CORRELATION OF ABRASIVE WEAR TESTS, WEAR, 63, (2), 1980, p359 - 370 Journal Article, 1980

TORRANCE AA, METALLOGRAPHY OF WORN SURFACES AND SOME THEORIES OF WEAR - REPLY, WEAR, 56, (2), 1979, p424 - 426 Journal Article, 1979

TORRANCE AA, METALLOGRAPHY OF WORN SURFACES AND SOME THEORIES OF WEAR, WEAR, 50, (1), 1978, p169 - 182 Journal Article, 1978

A.A.Torrance, W.J.Plumbridge and F.H.Stott, Workpiece Damage in Creep Feed Grinding, Metals Technology, 4, 1977, p249 - 255 Journal Article, 1977

TORRANCE AA, CAMERON A, SURFACE TRANSFORMATIONS IN SCUFFING, WEAR, 28, (3), 1974, p299 - 311 Journal Article, 1974

TORRANCE AA, LIMITS OF LUBRICATION - CONFERENCE AT IMPERIAL-COLLEGE, INDUSTRIAL LUBRICATION AND TRIBOLOGY, 23, (9), 1971, p318 Journal Article, 1971

Non-Peer-Reviewed Publications

D. V. De Pellegrin, N. D. Corbin, G. Baldoni, A. A. Torrance,, The Measurement and Description of Diamond Particle Shape in Abrasion., Diamond at Work Conference II, Rome, April 2007, edited by M. Jennings , 2007 Conference Paper, 2007

D.V. De Pellegrin and A.A. Torrance, The contribution of debris formation to the particle size effect in abrasive wear, Austrib, Brisbane, December 2006, 2006 Conference Paper, 2006

D. V. De Pellegrin and A. A. Torrance, Characterisation of abrasive particles and surfaces in grinding, Diamond at Work Conference I, Barcelona, April 2006, edited by M. Jennings , 2006 Conference Paper, 2006 TARA - Full Text

A. Zschocke, Y.Blake, A.A.Torrance, Wedge wear tests of low carbon steel and malleable iron, Proc. 30th Leeds Lyon Symposium, edited by L.Flamand, G.Dalmaz and R.M. Priest , Elsevier, 2004 Conference Paper, 2004

Darko M. Babic, Darina B. Murray and Andrew Torrance, Control of Grinding Temperature by High Speed Air Jets, Int. Conf. on Heat Transfer, Bled, 2004 Conference Paper, 2004 TARA - Full Text

A.A.Torrance, Wear of grinding wheels - software for their selection, Servicing Manufacture Proc. 21st Int. Man. Conf, Limerick, 1st September 2004, edited by P.Phelan , 2004, pp305-311 Conference Paper, 2004 TARA - Full Text

O'Donovan, T.S., Murray, D.B. and Torrance, A.A., Unsteady Heat Transfer in an Impinging Jet Flow, Proceedings of the 8th UK National Heat Transfer Conference, Oxford, 2003 Conference Paper, 2003

M. Busquet and A.A.Torrance, Some models of asperity contacts, Proc. 27th Leeds Lyon Symposium, edited by L.Flamand, G.Dalmaz and C.M.Taylor , Elsevier, 2001 Conference Paper, 2001

M. Busquet and A.A.Torrance, Wear: influence of detached particles trapped in the contact when a hard cylinder slides over a smooth soft surface, Proc. 26th Leeds Lyon Symposium, edited by L.Flamand, G.Dalmaz and C.M.Taylor , Elsevier, 2000 Conference Paper, 2000

M. Busquet and A.A.Torrance, Investigation of surface deformation and friction when a cylindrical asperity slides over a smooth soft surface, Proc. 25th Leeds Lyon Symposium, edited by L.Flamand, G.Dalmaz and C.M.Taylor , Elsevier, 1999, pp101 - 110 Conference Paper, 1999

J.A.Badger and A.A.Torrance, A computer programme to predict grinding forces from wheel surface profiles using slip-line fields, Proc. Conference in Advanced Manufacturing Technologies, San Sebastian, 1998, pp445 - 456 Conference Paper, 1998

D.Walsh, H. Izadi and A.A.Torrance, A semi-analytical approach to evaluating residual stress on the surface of components subject to a moving heat source, Proc. Conference in Advanced Manufacturing Technologies, San Sebastian, 1998, pp875 - 886 Conference Paper, 1998

A.A.Torrance, Yanyi Yang Blake and B. Crosby, The wear mechanism of ductile metals by slurries : fatigue or ratchetting?, Proc. 22nd Leeds Lyon Symposium, edited by L.Flamand, G.Dalmaz and C.M.Taylor, Elsevier , 1996, pp615 - 622 Conference Paper, 1996

A.A.Torrance and Y.Yang, Local surface strains in asperity contacts: their influence on lubricated wear, Proc. 21st Leeds Lyon Symposium, edited by D.Dowson and C.M.Taylor, Elsevier , 1995, pp335 - 341 Conference Paper, 1995

A.A.Torrance and N. Brenner, A slip-line field model of the mechanics of grinding, Proceedings of the Eurometalworking - 94 conference, University of Udine, edited by E.Cosmacini , 1994, pp076-1 - 076-7 Conference Paper, 1994

A.A.Torrance and Zhou F, Fracture Modes in Wear Particle Formation, Proc. 20th Leeds Lyon Symposium, edited by D.Dowson and M.Godet, Elsevier , 1994, 521 - 529 Conference Paper, 1994

A.A.Torrance and A.Parkinson, Towards a better surface finish for bearing materials, 19th Leeds-Lyon Symposium, edited by Ed. D.Dowson and M.Godet Elsevier , 1993, pp91 - 98 Conference Paper, 1993

A.A.Torrance, Debris Detachment in Plastic Contacts, Wear Particles, edited by M.Godet and D.Dowson , Elsevier, 1992, pp49 - 55 Conference Paper, 1992

M.Mee, A.A.Torrance and I..T McGovern, The Effect of ZDDP on the Lubricated Wear of CuPb30, Vehicle Tribology, edited by D. Dowson and M. Godet , Elsevier, 1991, pp421 - 427 Conference Paper, 1991

A.A.Torrance, The Tribological Properties of Dynamic Compacts of Aluminium-Based Powders, European Research on Materials Substitution, edited by I.V.Mitchell and H. Nosbusch , Elsevier, 1988, pp453 - 460 Conference Paper, 1988

M.Mee and A.A.Torrance, Wear Testing of Aluminiumm-Based Bearing Metals Produced by Powder Metallurgy Methods, Proc. 4th Irish Dur. and Fract. Conf., Queen's University, Belfast, 1986, pp192 - 201 Conference Paper, 1986

M.Mee and A.A.Torrance, The Corrosion Resistance of Buried S.C.A. Conductor, Proc. 1st Irish Dur. and Fracture Conf., Dublin, 1984, pp219 - 226 Conference Paper, 1984

A.A.Torrance, The Theory of Abrasive Wear Suppression, Proc. 1st Irish Dur. Fract. Conf., Parsons Press Dublin, 1984, pp283 - 288 Conference Paper, 1984

J.Morgan, R.J.Stokes and A.A.Torrance, Deformation in Heavily Loaded Rolling Contacts, 8th Leeds-Lyon Symposium, Butterworth, 1982, pp184 - 191 Conference Paper, 1982

R.J.Stokes, J.S.C.Parry and A.A.Torrance, A New Rolling Contact Fatigue Test Machine, Symposium on the Performance and Testing of Gear Oils and Transmission Fluids, Heyden and Son, 1981, pp35 - 42 Conference Paper, 1981

A.A.Torrance, Metallurgical Effects Associated with Grinding, Proc 19th M.T.D.R. Conf., Macmillan, 1978, pp637 - 644 Conference Paper, 1978

Research Expertise

Description

1. MIST-JET COOLING OF GRINDING: This project, sponsored by Enterprise Ireland, is to prove the concept of mist jet cooling for abrasive machining. A prototype cooler has been built, and is available for demonstration on site.It can be extremely effective with very small quantities of environmentally friendly liquids. 2. MEASUREMENT OF ABRASIVES AND ABRASIVE TOOLS: This project, sponsored by the Irish Council for Science, Engineering and Technology, seeks to develop a method for accurately quantifying the sharpness of individual abrasives, and of abrasive tools using stereo microscopy. 3. ENHANCED GAS-JET COOLING OF MACHINING PROCESSES: This project, sponsored by Science Foundation Ireland, seeks to apply the techniques developed in the project on grinding to other machining processes. Early results indicate that excellent results are possible with environmentally friendly fluids and good nozzle design. 4. ENHANCED GAS-JET COOLING OF DISK BRAKES: This project, sponsored by Science Foundation Ireland, seeks to apply the techniques developed in the projects on grinding and machining to the cooling of disk brakes. Preliminary work is ongoing on the design of a suitable process. 5. FUEL AND LUBRICANT INTERACTIONS WITH NON-FERROUS METALS: This project, sponsored by the E.U.and Shell Global Solutions seeks to investigate the effects of fuel and lubricant additives on the froistion and wear of contacts involvoing non-ferrous metals. The outcome of the project will be a fuller understanding of the formation of surface films on surfaces other than steel, and how the surface film contributes to the friction and wear performance of the lubricant in such systems. 6. A NEW TEST FOR FRICTION IN FORGING: This is an unsponsored research project to develop a new, test more realistic than the conventional ring test to measure friction in forging.

Projects

  • Title
    • Mist-jet cooling of grinding
  • Summary
    • This project, sponsored by Enterprise Ireland, is to prove the concept of mist jet cooling for abrasive machining. A prototype cooler has been built, and is available for demonstration on site.It can be extremely effective with very small quantities of environmentally friendly liquids.
  • Funding Agency
    • Enterprise Ireland
  • Date From
    • 2004
  • Date To
    • 2005
  • Title
    • Measurement of abrasives and abrasive tools
  • Summary
    • This project, sponsored by the Irish Council for Science, Engineering and Technology, seeks to develop a method for accurately quantifying the sharpness of individual abrasives, and of abrasive tools using stereo microscopy. Software which implements some of the features of this can be found at: www.mecheng.tcd.ie/~torrance/software.html
  • Funding Agency
    • IRCSET
  • Date From
    • 2004
  • Date To
    • 2006
  • Title
    • Enhanced gas-jet cooling of machining processes
  • Summary
    • This project, sponsored by Science Foundation Ireland, seeks to apply the techniques developed in the project on grinding to other machining processes. Early results indicate that excellent results are possible with environmentally friendly fluids and good nozzle design.
  • Funding Agency
    • SFI
  • Date From
    • 2004
  • Date To
    • 2007
  • Title
    • Enhanced gas-jet cooling of disk brakes
  • Summary
    • This project, sponsored by Science Foundation Ireland, seeks to apply the techniques developed in the projects on grinding and machining to the cooling of disk brakes. Preliminary work is ongoing on the design of a suitable process.
  • Funding Agency
    • SFI
  • Date From
    • 2005
  • Date To
    • 2007
  • Title
    • Fuel and lubricant interactions with non-ferrous metals
  • Summary
    • This project, sponsored by the E.U.and Shell Global Solutions seeks to investigate the effects of fuel and lubricant additives on the froistion and wear of contacts involvoing non-ferrous metals. The outcome of the project will be a fuller understanding of the formation of surface films on surfaces other than steel, and how the surface film contributes to the friction and wear performance of the lubricant in such systems.
  • Funding Agency
    • E.U. Shell Global Solutions
  • Date From
    • 2005
  • Date To
    • 2008
  • Title
    • Durability of graphite seals
  • Summary
    • This project provided basic mechanical and tribological design data for graphite seals, and design rules for their installation. It involved developing new mechancial and tribological test methods and new constitutative models to describe the highly non-linear behaviour of graphite
  • Funding Agency
    • Enterprise Ireland/Merkel Freudenberg
  • Date From
    • 1999
  • Date To
    • 2003
  • Title
    • Software for the prediction of friction coefficients.
  • Summary
    • Renault commissioned this work to develop a friction model and software to allow for the conditions in the contact between a piston ring and cylinder liner. By allowing for both elastic and plastic deformation of asperities, and for the properties of boundary films, it could be shown that there is an optimum finish for these components. If the finish is either too rough or too smooth, there is a danger of high friction and scuffing. The models developed predicted well the friction measured experimentally for a wide range of finishes. Software to implement the algorithms can be found at: www.mecheng.tcd.ie/~torrance/software.html
  • Funding Agency
    • Renault D.E.Mat (France).
  • Title
    • Modelling and design of back grinding wheels
  • Summary
    • The effects of abrasive size and distribution on the performance of back grinding wheels was modelled to provide a design tool for makers of these wheels.
  • Funding Agency
    • Enterprise Ireland/Atlantic Diamond
  • Date From
    • 2001
  • Date To
    • 2001

Keywords

ABRASION; Abrasive machining; ABRASIVE WEAR; ADDITIVE; ASPERITY DEFORMATION MODELS; ATTRITIOUS WEAR; BALL BEARING; BORE POLISHING; BOUNDARY FICTION; BOUNDARY LUBRICATION; COEFFICIENTS; CONTACT; DEBRIS; DEFORMATION; ELASTOHYDRODYNAMIC CONTACTS; FATIGUE; FITTING; FORM GRINDING; FRICTION; Friction and wear of engine components; FRICTION PREDICTION; GRINDING TEMPERATURE; LIFE; LUBRICANT CHEMISTRY; MECHANISM; Metal cutting; MICROSTRUCTURE; Modelling of boundary fristion and wear; PARAMETERS; PERFORMANCE; PREDICTION; PROFILOMETRY; RESISTANCE; ROLLING-CONTACT FATIGUE; ROUGH SURFACES; STEEL; THICK ANTIWEAR FILMS; TRANSFORMATION; WEAR

Recognition

Awards and Honours

Visiting Professor, INSA de Lyon 2002

Fellow TCD 1992

Memberships

M.I.M.M.M. C.Eng 1973 – to date