Research areas

Research areas being pursued in the group include:

Below are some highlights of the research on the manufacturing, microstructure and mechanical behaviour of various materials, supported by the funding agencies.

  1. Additive manufacturing of metals and lattice structures >>
  2. Light alloys (Ti, Al) >>
  3. Metal foams >>
  4. Polymeric foams and fibre reinforced composites >>
  5. Ceramics >>
  6. Integrated material modelling to relate manufacturing to final performance >>

Additive manufacturing of metals and lattice structures

Ti-6Al-4V alloys manufactured by selective laser melting (SLM)

  • Effect of SLM processing parameters and subsequent heat treatment on microstructure and texture.
  • Simulation of the SLM process and the diffusion in heat treatment.

SLM stainless steel 316L lattice structures

  • Constitutive equation of individual SLM struts in the lattice.
  • FE modelling of deformation and failure behaviour for the design and optimisation of lattices.

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Light alloys (Ti, Al)

Micromechanism for the high rate behaviour of Ti-6Al-4V alloys

The 3D interaction between porosity and fatigue crack evolution in cast aluminium alloys

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Metal foams

Open-cell Inconel foams

  • The slurry coating technique developed to manufacture the open-cell foam.
  • Effect of slurry composition (Φ) on microstructure and mechanical properties.
  • Unit cell size effect on the sound absorption capability.

Closed-cell magnesium foams

  • Unit cell homogeneity enhanced by the improved thermal stability during foaming.
  • Strain rate dependent fracture mechanisms related to rate sensitivity of bulk properties.

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Polymeric foams and fibre reinforced composites

Syntactic foams

  • The 3D real time failure process in cenosphere epoxy syntactic foams.
  • FE modelling of the effect of cenosphere volume fraction for virtual design of the foam.
  • Strain rate dependent failure mechanism in 3D.

Carbon fibre reinforced polymeric (CFRP) laminates [+45/-45/0]2s

  • Statistical analysis and prediction of flexural fatigue life.
  • Characterisation and quantification of 3D fatigue damage by x-ray tomography.

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Multiscale failure phenomena in armour ceramics

  • Voronoi cell finite element modelling of the intergranular fracture mechanism in polycrystalline alumina.
  • SHPB tests and FE modelling of dynamic failure and fracture mechanism in alumina.

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Integrated material modelling at various scales

Multiscale, through-process modelling to predict the fatigue life of cast aluminium alloy components

  • Simulating the microstructure, and residual stress in each processing stage.
  • Prediction of the fatigue life of Al alloy wheel by linking each simulation.

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Our research has received funding from:

University of Glasgow (2017)

NTU, MOE, MINDEF, A*STAR, DSO National Laboratories, ST Dynamics (2010 – 2017, all in Singapore)