Now showing items 1-15 of 15

  • Brillouin scattering study on the single-crystal elastic properties of natrolite and analcime zeolites 

    Sanchez-Valle, Carmen; Sinogeikin, Stanislav V.; Lethbridge, Zoe A. D.; Walton, Richard I.; Smith, Christopher W.; Evans, Kenneth E.; Bass, Jay D (American Institute of Physics, 2005)
    The Brillouin light-scattering technique was used to investigate the single-crystal elastic properties of two aluminosilicate zeolites, natrolite (NAT) and analcime (ANA), at ambient conditions. An inversion of the acoustic ...
  • Economical carbon and cellulosic sheet moulding compounds for semi- and non-structural applications 

    Evans, Kenneth E.; Brookbank, Paul A.; Savage, Luke (SAGE Publications, 2015)
    The use of discontinuous carbon fibre plastics (DCFP) in automotive applications is increasing. The material offers a light weight and stiff alternative to conventional short-fibre glass-reinforced composites such as sheet ...
  • Effect of heterogeneity on the elastic properties of auxetic materials 

    Gaspar, N.; Smith, Christopher W.; Evans, Kenneth E. (American Institute of Physics, 2003)
    Auxetic materials are gaining practical interest for their unusual and sometimes extreme mechanical response. The process of modeling these materials so far has highlighted a number of microstructural properties that are ...
  • ElAM: A computer program for the analysis and representation of anisotropic elastic properties 

    Marmier, Arnaud; Lethbridge, Zoe A. D.; Walton, Richard I.; Smith, Christopher W.; Parker, Stephen C.; Evans, Kenneth E. (Elsevier, 2010)
    The continuum theory of elasticity has been used for more than a century and has applications in many fields of science and engineering. It is very robust, well understood and mathematically elegant. In the isotropic case ...
  • Elastic anisotropy and extreme Poisson's ratios in single crystals 

    Lethbridge, Zoe A. D.; Walton, Richard I.; Marmier, Arnaud; Smith, Christopher W.; Evans, Kenneth E. (Elsevier, 2010)
    The relationship between elastic anisotropy and extreme Poisson’s ratio behaviour (either positive or negative) in single-crystalline materials has been investigated using experimentally determined single-crystal elastic ...
  • Manufacture and Characterisation of a Novel, Low Modulus, Negative Poisson’s Ratio Composite 

    Miller, W.; Hook, P.B.; Smith, Christopher W.; Wang, X.; Evans, Kenneth E. (Elsevier, 2009)
    Relatively few negative Poisson’s ratio (auxetic) composites have been manufactured and characterised and none with inherently auxetic phases [Milton G. J. Mech. Phys. Solids 1992;40:1105–37]. This paper presents the use ...
  • Modelling negative linear compressibility in tetragonal beam structures 

    Barnes, D.L.; Miller, W.; Evans, Kenneth E.; Marmier, Arnaud (Elsevier, 2012)
    Most materials compress axially in all directions when loaded hydrostatically. Contrary to this, some materials have been discovered that exhibit negative linear compressibility and, as such, expand along a specific axis ...
  • Multi-objective optimisation of viscoelastic damping inserts in honeycomb sandwich structures 

    Aumjaud, Pierre; Fieldsend, Jonathan E.; Boucher, Marc-Antoine; Evans, Kenneth E.; Smith, Christopher W. (Elsevier, 2015-11-15)
    The Double-Shear Lap Joint (DSLJ) is a novel damping insert sited internally within a structure which is particularly well suited for lightweight sandwich structures with internal voids, such as honeycomb core sandwich ...
  • Negative linear compressibility in common materials 

    Miller, W.; Evans, Kenneth E.; Marmier, Arnaud (American Institute of Physics, 2015)
    Negative linear compressibility (NLC) is still considered an exotic property, only observed in a few obscure crystals. The vast majority of materials compress axially in all directions when loaded in hydrostatic compression. ...
  • Negative Poisson's ratios in siliceous zeolite MFI-silicalite 

    Sanchez-Valle, Carmen; Lethbridge, Zoe A. D.; Sinogeikin, Stanislav V.; Williams, Jennifer J.; Walton, Richard I.; Evans, Kenneth E.; Bass, Jay D. (American Institute of Physics, 2008)
    Brillouin scattering measurements of the single-crystal elastic properties of the as-made zeolite silicalite mid R:(C(3)H(7))(4)NFmid R:(4)[Si(96)O(192)]-MFI provides the first experimental evidence for on-axis negative ...
  • A novel viscoelastic damping treatment for honeycomb sandwich structures 

    Aumjaud, Pierre; Smith, Christopher W.; Evans, Kenneth E. (Elsevier, 2015)
    Constrained layer dampers (CLD) are in widespread use for passive vibration damping, in applications including aerospace structures which are often lightweight. The location and dimensions of CLD devices on structures has ...
  • Processability of PEEK, a New Polymer for High Temperature Laser Sintering (HT-LS) 

    Berretta, S.; Evans, Kenneth E.; Ghita, O. (Elsevier, 2015)
    Currently, the HT-LS sector is predominantly based around one commercial poly ether ketone (PEK) polymer. Although the combination of polymer and process works well, a lower melting temperature polymeric material, part of ...
  • Simulated Optimisation of Disordered Structures with negative Poisson’s ratios 

    Horrigan, E.J.; Smith, Christopher W.; Scarpa, F.; Gaspar, N.; Javadi, Akbar A.; Berger, M.A.; Evans, Kenneth E. (Elsevier, 2009)
    Two-dimensional regular theoretical units that give a negative Poisson’s ratio (NPR) are well documented and well understood. Predicted mechanical properties resulting from these models are reasonably accurate in two ...
  • Size, shape and flow of powders for use in Selective Laser Sintering (SLS) 

    Berretta, S.; Ghita, O.; Evans, Kenneth E.; Anderson, A.; Newman, C. (2013)
    This paper investigates the effects of particles size and morphology on flowability of a range of polymeric powders (SLS and non-SLS grades). The effect of additives incorporation, as well as drying or sieving, on the ...
  • A systematic typology for negative Poisson's ratio materials and the prediction of complete auxeticity in pure silica zeolite JST 

    Siddorn, Mark J.; Coudert, François-Xavier; Evans, Kenneth E.; Marmier, Arnaud (Royal Society of Chemistry, 2015-06-15)
    Single crystals can commonly have negative Poisson’s ratio in a few directions; however more generalised auxeticity is rarer. We propose a typology to distinguish auxetic materials. We characterise numerous single crystals ...