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2004 Visitors

Genevieve Langdon

Tel: +27 21 650 5347
Email : glangdon@ebe.uct.ac.za

Personal Details

Genevieve was born in Liverpool, UK where she grew up. She attended the University of Liverpool where she graduated with a first class honours degree in Integrated Engineering in 1999. Her undergraduate project thesis examined the failure modes of thin aluminium panels subjected to pressure pulses. She showed, for the first time, that the failure modes used to classify impulsively loaded beams and plates could also applied to statically and dynamically pressure-loaded metal panels.

She joined the University of Liverpool Impact Research Centre in 1999 and was awarded a PhD in Mechanical Engineering in 2003. Her thesis title was "Failure of corrugated panels and supports under blast loading: experimental, analytical and numerical studies". Her doctoral research was concerned with the performance of corrugated blast walls subjected to gas explosion loading, concentrating on the influence of the connection support in limiting the overall deformation and buckling of the panels. She is currently employed as a senior research assistant at the University of Liverpool, working for Dr Graham Schleyer on various projects concerning structural response to blast and pressure loading. She has been a visiting researcher at the University of Cape Town on three occasions.

Current Research

Corrugated blast wall panel response (Liverpool)

One of her current research interests is concerned with the performance of corrugated blast walls subjected to gas explosion loading and static pressure loads. Her work focuses on examining on the influence of the connection support, the profile direction, the effect of scaling on the panel response and the buckling modes of the panels. The work, which is an extension of her PhD research, is funded by the UK Health and Safety Executive and the blast wall manufacturers. She is developing analytical and numerical models for use within blast wall design, and performed scaled pressure tests on specimens for future model validation. She has shown that current blast wall design practices lead to overly conservative designs and that ultimate capacities of the blast walls are more than three times the design capacity. The flexibility of connection supports significantly influences the overall behaviour of the blast walls, with a balance needed between conflicting design criteria: the need to minimise force transfer to the primary framework competing with the requirement to limit overall displacements of the walls.

Blast performance of novel lightweight materials (UCT, Liverpool)

The University of Liverpool has developed a range of novel lightweight materials, based on arrangements of metal alloys and thermoplastic based composites. These materials, known as fibre-metal laminates (FMLs), have excellent impact and fatigue properties and have been proposed for use in blast resistant applications. The research work at UCT and the University of Liverpool is investigating their performance under blast loading, and is sponsored by the UK Engineering and Physical Sciences Research Council, the UK Home Office and several industrial project partners. It is investigating the use of blast-resistant materials in street furniture, such as post-boxes and litterbins, as these are possible locations for concealing terrorist bombs. The project comes at a time when there is a growing threat to the general public from terrorist activities. The outcome of this study could lead to a significant reduction in structural damage and personal injuries caused through targeted terrorist bomb attacks in major cities. This new generation of blast-resistant, lightweight, cost-effective fibre-metal laminates is also of value to the aerospace and transport industries, more particularly so as their properties become more widely known.

Publications

Journal Papers

  • G.S. Langdon and G.K. Schleyer, ‘Deformation and failure of clamped aluminium plates under pulse pressure loading’, Int. J. Impact Eng, 28(10), pp. 1107-1127, 2003.
  • G.S. Langdon and G.K. Schleyer, ‘Unusual strain rate sensitive behaviour of AISI 316L austenitic stainless steel’, IMechE J. of Strain Analysis, 39(1), pp. 71-86, 2004.
  • G.S. Langdon and G.K. Schleyer, ‘Modelling the response of semi-rigid supports under combined loading’, Engineering Structures, 26(4), pp. 511-517, 2004.
  • G.S. Langdon, S. Chung Kim Yuen and G.N. Nurick, ‘Experimental and numerical studies on the response of quadrangular stiffened plates, Part II – Localised blast loading’, Int. J. Impact Engng, 31(1), pp. 85-111, 2005.
  • G.S. Langdon and G.K. Schleyer, ‘Inelastic deformation and failure of profiled stainless steel blast wall panels: Part I, experimental investigations’, Int. J. Impact Engng, 31(4), pp. 341-369, 2005.
  • G.S. Langdon and G.K. Schleyer, ‘Inelastic deformation and failure of profiled stainless steel blast wall panels: Part II, analytical modelling considerations’, Int. J. Impact Engng, 31(4), pp. 370-399, 2005.
  • G.S. Langdon and G.K. Schleyer, ‘Inelastic deformation and failure of profiled stainless steel blast wall panels: Part III, finite element simulations and overall summary’ (in press, Int. J. Impact Engng).
  • G.S. Langdon, W.J. Cantwell and G.N. Nurick, ‘The blast response of novel thermoplastic-based fibre-metal laminates – some preliminary results and observations’ (in press, Int. J. Composites Technology).
  • G. K. Schleyer, G. S. Langdon and S. James, ‘Peer tutoring in conceptual design’ (in press, European J. of Engineering Education).
  • G.K. Schleyer, M.J. Lowak, M.A. Polcyn and G.S. Langdon, ‘Experimental investigation of blast wall panels under shock pressure loading’, (submitted Int. J. Impact Engng, 2004).
  • G.K. Schleyer, T.H. Kewaisy, J.W. Wesevich and G.S. Langdon, ‘Validated finite element analysis model of blast wall panels under shock pressure loading’, (submitted Int. J. Ships & Offshore Structures, 2004).

Published Conference Proceedings

  • G.S. Smart and G.K. Schleyer, 'Failure characterization of clamped aluminium plates under pulse pressure loading', Proc. Structures under Shock and Impact VI Conf., Cambridge, UK, pp. 321-330, 2000.
  • G.S. Langdon, S. Chung Kim Yuen and G.N. Nurick, 'The response of stiffened square plates subjected to localized blast loading', Proc. Structures under Shock and Impact VII Conf., Montreal, Canada, pp. 3-12, 2002.
  • G.K. Schleyer, G.S. Langdon, R. Martland, M. Lowak and M. Polcyn, "Pulse pressure testing of scaled steel blast panels", Proc. 12th Major Hazards Offshore Conference, ERA Technology, London, UK, December 2003.
  • G.S. Langdon and G.K. Schleyer, 'Scaled Testing of Profiled Stainless Steel Blast Walls', to be presented at the 8th Int. Conf. on Structures under Shock and Impact (SUSI VIII), Crete, March 2004 (in press).
  • G.S. Langdon, W.J. Cantwell and G.N. Nurick, 'The Blast Behaviour of Thermoplastic-based Fibre-metal Laminates', Structures Under Shock and Impact (SUSI VIII), Crete, Greece, 2004, pp. 455-464.
  • G.K. Schleyer, G.S. Langdon, M. Lowak, T. Kewaisy, J. Wesevich and R. Martland, ‘Scale testing and analysis of profiled stainless steel blast panels with plastic deforming hinge supports’, 5th Int. Symposium on Impact Engineering 2004, Cambridge, UK, July 2004.
  • G.K. Schleyer, G.S. Langdon, and R. Martland, “Modelling of Steel Blast Panels for Structural Safety Assessments”, Proc. 13th Major Hazards Offshore Conference, ERA Technology, London, UK, December 2004.