Dr Alfred Akisanya

Dr Alfred Akisanya The University of Aberdeen School of Engineering Reader work +44 (0)1224 272989 pref a.r.akisanya@abdn.ac.uk

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Biography

Dr Akisanya studied Mechanical Engineering at the University of Ibadan, Nigeria where he obtained a First Class, BSc (Honours) degree and M.Sc degree in Mechanical Engineering. He worked briefly with Shell Nigeria before subsequently studying for his PhD on Interfacial Fracture at Cambridge University Engineering Department under the supervision of Prof. Norman Fleck, FRS, and with funding from Shell-Cambridge Commonwealth Trust.  He worked briefly as Research Associate at Cambridge University with Prof. Alan Cocks on the mechanics of powder compaction before  joining the lecturing staff of Aberdeen University Engineering Department.   Dr Akisanya is a Chartered Mechanical Engineer (CEng) and Fellow of the Institution of Mechanical Engineers (FIMechE). 

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Research Interests

• Micromechanics.
• Fracture and design of bonded joints and layered solids.
• Mechanics of powder compaction.
• Deformation and fracture of bituminous and viscoelastic materials.
• Mechanics of the cold expansion of metallic tubulars.
• Deformation and design optimisation of energy absorbing structures.

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Research Grants

• “The development of design standards for a friction grip system for securing oil and gas casing”; 2009-2011; £108k, Knowledge Transfer Partnership with Plexus Ocean Systems Ltd. (Co-investigator with Dr Bin Wang as Lead Academic).
• “The development of a friction grip system for securing oil and gas casing and tubulars in hostile surface and subsea conditions”; 2006-2008; £150k, Knowledge Transfer Partnership with Plexus Ocean Systems Ltd.(Lead Academic, with WF Deans and RD Neilson as co-investigators).
• “Analysis and optimisation of the in-situ hydraulic expansion of oil well tubulars”; 2003-2005; £118k; Knowledge Transfer Partnership with Read Wells Ltd. (Lead academic, with Dr. W.F. Deans as co-investigator).
• “A study of decompression after cold isostatic compaction of ceramics”; 2001-2004; £60k; EPSRC; (co-investigator, with Dr. R.J. Henderson as principal investigator).
• “A study of decompression after cold isostatic compaction of ceramics”; 2001-2004; £9k; Vesuvius UK; (co-investigator, with Dr. R.J. Henderson as principal investigator)
• “The mechanics of cold expansion of tubulars for downhole application in the oil and gas industry”; 2001-2004; £165k; Teaching Company Scheme with Shell International (Lead Academic, with Dr. W.F. Deans as co-investigator)
• “The design and analysis of threaded connectors for down-hole applications”; 1999-2001; £80k; Teaching Company Scheme with Petroleum Engineering Services (co-investigator, with Dr. W.F. Deans as Lead Academic).
• “Isostatic pressing of continuous casting refractories”; 1997-2000; £145k; EPSRC; (co-investigator, with Prof. H.W. Chandler as principal investigator).
• “Isostatic pressing of continuous casting refractories”; 1997-2001; £9k; Vesuvius UK; (co-investigator, with Prof. H.W. Chandler as principal investigator).
• “The mechanical behaviour and design optimisation of asphaltic bridge deck expansion plugs”; 1997-2001; £123k; EPSRC; (co-investigator, with Dr. M.S. Imbabi as principal investigator).
• “The development of a large deformation elastomeric bridge plug for wireline applications”; 1996-1998; £80k; Teaching Company Scheme with Petroleum Engineering Services (Lead Academic).

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External Responsibilities

• External PhD examiner for Universities of Cambridge, Surrey and Leicester, and Universite Pierre & Marie Curie - Paris 6.
• Referee for about fifteen different international scientific journals including: Journal of the Mechanics and Physics of Solids; International Journal of Solids and Structures; International Journal of Mechanical Sciences; The European Journal of Mechanics A/Solids; Fatigue and Fracture of Engineering Materials and Structures; International Journal of Fracture; Journal of American Ceramics Society; Journal of Biomechanics.
• Referee of grant proposals for the Engineering and Physical Sciences Research Council.
• Professional Review Interviewer of Chartered Engineer applicants for the Institution of Mechanical Engineers (IMechE).
• Member of the Academic Standard Panel (ASP) of the Institution of Mechanical Engineers

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Publications

Contributions to Journals

Articles

• Ajibose, OK., Wiercigroch, M., Pavlovskaia, EE., Akisanya, AR. & Karolyi, G. (2012). 'Dynamics of a drifting impact oscillator with a new model of the progression phase'. Journal of Applied Mechanics- Transactions of ASME, vol 79, no. 6.
  [Online] DOI: 10.1115/1.4006379
• Akisanya, AR., Obi, U. & Renton, NC. (2012). 'Effect of ageing on phase evolution and mechanical properties of a high tungsten super-duplex stainless steel'. Materials Science and Engineering A, vol 535, pp. 281-289.
  [Online] DOI: 10.1016/j.msea.2011.12.087
  [Online] AURA: Akisanya_et_al_FINAL_Revised_manuscript_with_figures.pdf
• Lasebikan, BA., Akisanya, AR. & Deans, WF. (in press). 'The Mechanical Behavior of a 25Cr Super Duplex Stainless Steel at Elevated Temperature'. Journal of Materials Engineering and Performance.
  [Online] DOI: 10.1007/s11665-012-0273-5
• Lasebikan, BA., Akisanya, AR., Deans, WF. & MacPhee, DE. (2011). 'The effect of hydrogen sulphide on ammonium bisulphite when used as an oxygen scavenger in aqueous solutions'. Corrosion Science, vol 53, no. 12, pp. 4014-4025.
  [Online] DOI: 10.1016/j.corsci.2011.08.011
  [Online] AURA: Lasebikan_et_al._Complete_Manuscript_FINAL.pdf
• Akisanya, AR., Khan, F., Deans, WF. & Wood, P. (2011). 'Cold hydraulic expansion of oil well tubulars'. International Journal of Pressure Vessels and Piping, vol 88, no. 11-12, pp. 465-472.
  [Online] DOI: 10.1016/j.ijpvp.2011.08.003
  [Online] AURA: Akisanya_et_al._2011_Accepted_manuscript.pdf
• Ajibose, OK., Wiercigroch, M., Pavlovskaia, EE. & Akisanya, AR. (2010). 'Global and local dynamics of drifting oscillator for different contact force models'. International Journal of Non-Linear Mechanics, vol 45, no. 9, pp. 850-858.
  [Online] DOI: 10.1016/j.ijnonlinmec.2009.11.017
  [Online] AURA: IJNMpaper_091209.pdf
• Akisanya, AR. & Fleck, NA. (2006). 'Plastic collapse of thin-walled frusta and egg-box material under shear and normal loading'. International Journal of Mechanical Sciences, vol 48, pp. 799-808.
  [Online] DOI: 10.1016/j.ijmecsci.2006.01.020
• Akisanya, AR. & Meng, CS. (2003). 'Initiation of fracture at the interface corner of bi-material joints'. Journal of the Mechanics and Physics of Solids, vol 51, no. 1, pp. 27-46.
  [Online] DOI: 10.1016/S0022-5096(02)00076-5
• Qian, ZQ., Akisanya, AR. & Thomson, DS. (2002). 'Stress Behaviour at the Interface Junction of an Elastic Inclusion'. Journal of Applied Mechanics- Transactions of ASME, vol 69, no. 6, pp. 844-852.
  [Online] DOI: 10.1115/1.1507765
• Henderson, R., Chandler, HW., Akisanya, AR., Chandler, CM. & Nixon, SA. (2001). 'Micro-mechanical modelling of powder compaction'. Journal of the Mechanics and Physics of Solids, vol 49, no. 4, pp. 739-759.
  [Online] DOI: 10.1016/S0022-5096(00)00055-7
• Qian, ZQ. & Akisanya, AR. (2001). 'The stress distribution at the interface corner of a tri-material structure'. JOURNAL OF ENGINEERING MECHANICS-ASCE, vol 127, pp. 747-753.
  [Online] DOI: 10.1061/(ASCE)0733-9399(2001)127:8(747)
• Akisanya, AR., Zhang, Y., Chandler, HW. & Henderson, R. (2001). 'The deformation and densification of an array of metal-coated fibres'. Acta Materialia, vol 49, no. 2, pp. 221-235.
  [Online] DOI: 10.1016/S1359-6454(00)00311-6
• Sridhar, I., Fleck, NA. & Akisanya, AR. (2001). 'Cold compaction of an array of cylindrical powder particles'. International Journal of Mechanical Sciences, vol 43, pp. 715-724.
  [Online] DOI: 10.1016/S0020-7403(00)00037-0
• Henderson, R., Chandler, HW., Akisanya, AR. & Moriarty, B. (2000). 'Bag design in isostatic pressing'. Materials & Design, vol 21, no. 4, pp. 259-262.
  [Online] DOI: 10.1016/S0261-3069(99)00076-X

Chapters in Books, Reports and Conference Proceedings

Conference Proceedings

• Ajibose, OK., Wiercigroch, M., Pavlovskaia, EE. & Akisanya, AR. (2010). 'Contact force models and dynamics of a drifting oscillator'. in: Print Proceedings of the ASME 2009 IDET and CIE Conferences V4: Parts A-C, San Diego [3 part set]. American Society of Mechanical Engineers, pp. 1387-1397, Proceedings of the ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference 2009, DETC2009, Volume 4, Part C, 2010, San Diego, United States, 30-2 September.

Contributions to Conferences

Papers

• Lasebikan, BA., Akisanya, AR., Deans, WF., MacPhee, DE. & Boyle, L. (2010). 'The effect of ammonium bisulfite on sulphide in Brine/H2S solution'. Paper presented at National Association of Corrosion Engineers (NACE), CORROSION 2010, San Antonio, Texas, United States, 14/03/10 - 18/03/10,.
• Lasebikan, BA., Akisanya, AR., Deans, WF. & Alhoud, AR. (2009). 'Influence of ammonium bisulphite on the electrochemical behaviour of super duplex stainless steel (25% Cr) mini pipe samples in brine solution'. Paper presented at Stainless Steel World Conference, Maastricht, Netherlands, 10/11/09 - 12/04/10,.

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