Browsing by Author "Appleby-Thomas, Gareth J."

Browsing by Author "Appleby-Thomas, Gareth J."

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  • Application of shell jetting analysis to determine the location of the virtual origin in shaped charges 
    Agu, Henry; Hameed, Amer; Appleby-Thomas, Gareth J. (Elsevier, 2018-07-25)
    Shaped charges are designed to produce high-velocity jets for penetration. During jet formation, the liner collapses and converges at a point source, also known as the virtual origin (VO), along the distance–time plane. ...
  • Bacterial survival following shock compression in the GigaPascal range 
    Hazael, Rachael; Fitzmaurice, Brianna C.; Foglia, F.; Appleby-Thomas, Gareth J.; McMillan, P. F. (Elsevier, 2017-09-01)
    The possibility that life can exist within previously unconsidered habitats is causing us to expand our understanding of potential planetary biospheres. Significant populations of living organisms have been identified at ...
  • The bactericidal effect of shock waves 
    Leighs, J. A.; Appleby-Thomas, Gareth J.; Wood, David C.; Goff, Michael J.; Hameed, Amer; Hazell, P. J. (Institute of Physics, 2014-05-07)
    There are a variety of theories relating to the origins of life on our home planet, some of which discuss the possibility that life may have been spread via inter-planetary bodies. There have been a number of investigations ...
  • Ballistic behaviour of explosively shattered alumina and silicon carbide targets 
    Nanda, H.; Appleby-Thomas, Gareth J.; Wood, D. C.; Hazell, P. J. (Maney Publishing, 2011-12-31)
    The resistance offered by three ceramic materials of varying strength that have been subjected to explosive loading has been investigated by depth-of- penetration testing. Each material was completely penetrated by a ...
  • Characterisation of human tissues analogues for ballistic testing 
    Appleby-Thomas, Gareth J.; Khan, Irfan Ullah; Painter, Jonathan; Zioupos, Peter; Lordachescu, Alexandra; Hes, Roelof A. G. (None - paper only available to conference delegates, 2023-08-30)
    Ballistic testing necessarily employs simulant target materials for ethical and fiscal reasons. Current tissue analogues utilised for ballistic testing / research are, however, typically relatively simplistic – such as ...
  • A comparison of the ballistic behaviour of conventionally sintered and additively manufactured alumina 
    Appleby-Thomas, Gareth J.; Jaansalu, Kevin; Hameed, Amer; Painter, Jonathan; Shackel, James (Elsevier, 2019-06-20)
    Production of ceramic armour solutions on-demand/in-theatre would have significant logistical and military advantages. However, even assuming that such technologies could be successfully deployed in the field, such near ...
  • Comparison of the microstructure of machined and laser sintered shaped charge liner in the hydrodynamic regime 
    Agu, Henry; Hameed, Amer; Appleby-Thomas, Gareth J. (Springer, 2019-07-30)
    To gain further insight into the mechanisms underlying jet formation and elongation of laser sintered shaped charge liners under high strain rate deformation, Cu–Cr–Zr alloy liners fabricated by selective laser sintering ...
  • Constitutive model for fibre reinforced composites with progressive damage based on the spectral decomposition of material stiffness tensor 
    Vignjevic, Rade; Djordjevic, Nenad; Galka, Agata; Appleby-Thomas, Gareth J.; Hughes, Kevin (Elsevier, 2022-05-11)
    Complex nature of the fibre reinforced composites, their non-homogeneity and anisotropy make their modelling a challenging task. Although the linear – elastic behaviour of the composites is well understood, there is still ...
  • Damping of post-impact vibrations 
    Muster, Michael; Amer, Hameed; Wood, David C.; Appleby-Thomas, Gareth J.; Wasmer, Kilian (Elsevier, 2019-08-22)
    During the impact of a body on a plate, flexural waves are set which travel circularly outwards from the point of impact. These waves can be used to determine the properties of the impacting body. For accurate measurements, ...
  • Deviatoric response of an armour-grade aluminium alloy 
    Appleby-Thomas, Gareth J.; Hazell, P. J.; Millett, J.; Bourne, Neil K. (AIP American Institute of Physics, 2009-12-31)
    Aluminium alloys such as 5083 H32 are established light-weight armour materials. As such, the shock response of these materials is of great importance. The shear strength of a material under shock loading provides an ...
  • The dynamic behaviour of a modified polyurethane resin 
    Appleby-Thomas, Gareth J.; Hazell, P. J.; Stennett, C.; Cooper, G.; Cleave, R. (2011-06-15)
    The dynamic response of both a pure and nano-reinforced polyurethane replacement resin (PRR) have been investigated using plate impact techniques. Similar U-P-U- S Hugoniot equations of state have been established for ...
  • The dynamic behaviour of ballistic gelatin 
    Shepherd, C. J.; Appleby-Thomas, Gareth J.; Hazell, P. J.; Allsop, D. F. (AIP American Institute of Physics, 2009-12-31)
    In order to characterise the effect of projectiles it is necessary to understand the mechanism of both penetration and resultant wounding in biological systems. Porcine gelatin is commonly used as a tissue simulant in ...
  • The dynamic response of dense 3 dimensionally printed polylactic acid 
    Agu, Henry; Hameed, Amer; Appleby-Thomas, Gareth J.; Wood, David (Springer, 2019-05-22)
    Polylactic acid (PLA) is commonly used as a feedstock material for commercial 3D printing. As components manufactured from such material become more commonplace, it is inevitable that some of the resultant systems will be ...
  • The effects of 3D printed material properties on shaped charge liner performance 
    Agu, Henry (Cranfield University, 2019)
    Shaped charges operate by explosively loading a (typically metallic) liner to produce a jet travelling at extremely high velocity (9-12 km/s). Such explosive loading involves highly non-linear transient phenomena. As such, ...
  • The effects of changing chemistry on the shock response of basic polymers 
    Millett, J.; Brown, E. N.; Gray III, G. T.; Bourne, Neil K.; Wood, D. C.; Appleby-Thomas, Gareth J. (2016-07-11)
    The shock response of four common semicrystalline thermoplastic polymers—polyethylene (PE), polyvinylchloride (PVC), polytetrafluoroethylene (PTFE) and polychlorotrifluoroethylene (PCTFE)—have been studied in terms of their ...
  • The effects of quasi-one-dimensional shock on Escherichia coli while controlling pressure and temperature 
    Fitzmaurice, Brianna C.; Appleby-Thomas, Gareth J.; Painter, Jonathan; Wood, David C.; Hazael, Rachael (Elsevier, 2020-11-28)
    The response of microorganisms to high pressures is of growing interest in the literature, regarding areas of research including the sterilisation of foodstuffs, panspermia and, more generally, the study of extremophiles. ...
  • Fragmentation studies by non-explosive cylinder expansion technique 
    Rao, Prakash; Painter, Jonathan; Appleby-Thomas, Gareth J.; Critchley, Richard; Wood, David; Roberts, Andrew; Hazael, Rachael (Elsevier, 2020-09-04)
    Expansion and fragmentation of metallic cylinders is an important area of study both for designing munitions and mitigation techniques against fragments as well as in the failure of pressurised pipes in industry. Most of ...
  • Gas gun ramp loading of Kel-F 81 targets using a ceramic graded areal density flyer system 
    Goff, Michael J.; Hazell, Paul J.; Appleby-Thomas, Gareth J.; Wood, David C.; Stennett, Christopher (Elsevier, 2015-03-06)
    Kel-F 81 (PCTFE/Polychlorotrifluoroethylene) polymer targets were subjected to ramp loadings generated by a ceramic flyer accelerated into the targets by a gas gun in the plate impact configuration. This approach used a ...
  • Impact, penetration, and perforation of a bonded carbon-fibre-reinforced plastic composite panel by a high-velocity steel sphere: An experimental study 
    Hazell, P. J.; Appleby-Thomas, Gareth J.; Kister, G. (Professional Engineering Publishing, 2010-12-31)
    In this work, the response of a bonded CFRP composite panel, manufactured by bonding two laminates together, to impact, penetration and perforation by a high-velocity steel sphere has been studied. The response of a ...
  • The importance of considering both depth of penetration and crater volume in forwards-ballistic penetrative experiments 
    Powell, Dan; Appleby-Thomas, Gareth J.; Painter, Jonathan; Brock, Fiona; Thirulogasingam, Thiru; Sagoo, Kam; Brown, Nick; Livesey, Chris (AIP, 2023-09-26)
    The most common method of analysing armour performance is the Depth of Penetration (DoP). However, this one-dimensional measurement does not provide insight into the method of penetration or energy absorbed by the target; ...