student profile: Mr Hessam Jami


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Thesis work

Thesis title: Bonding Mechanism in the Aerosol Deposition Method

Supervisors: Ahmad JABBARZADEH , Roger TANNER

Thesis abstract:

Abstract
Impact performance of intrinsically brittle materials at the nanoscale is a topic of growing interest, for instance, in cold spray of nanomaterials. The main objective of the research is to carry out comparative analysis of ceramic nanoparticles deposition behavior. The work presented here is the preliminary work where the simulation framework is built and tested for the impact of titanium particles on a titanium substrate. The work is examination of single crystalline titanium nanoparticle deposition upon another titanium substrate with molecular dynamic simulation (MD) technique. Realistic potentials are used to allow for the deformation of the substrate and rigid nano-particle upon impact, the main concept of research is to assess deformation of particles and substrate during a modified cold spray process the so-called Aerosol Deposition Method (AMD), based on critical velocity of particles, size of particles and other critical parameters of AMD. Other important parameters in a deposition process such as local stresses and temperature at the substrate/particle impact region are calculated under practical conditions of cold spray process. Particle deformation and bonding condition has been simulated using LAMMPS molecular dynamic simulator. Furture experiments are planed in order to compare MD simulation results with Aerosol Deposition process parameters.

Selected publications

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Conferences

  • Jami, H., Masood, S., Song, W. (2018). Dynamic stress-strain compressive behaviour of FDM made ABS and PC parts under high strain rates. 1st International Conference on Mechanical, Materials and Renewable Energy (ICMMRE 2017), Majitar: Institute of Physics Publishing. [More Information]

2018

  • Jami, H., Masood, S., Song, W. (2018). Dynamic stress-strain compressive behaviour of FDM made ABS and PC parts under high strain rates. 1st International Conference on Mechanical, Materials and Renewable Energy (ICMMRE 2017), Majitar: Institute of Physics Publishing. [More Information]

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