Home


MSDL in a Nutshell

In an ideal world, a jet engine turbine blade would never crack, would never fatigue, would never creep, would withstand as high a temperature as we can impose, and would be as light and as strong as we can imagine. In the real world, to take even partial steps towards such goals, we need a deep understanding of materials performance at many length and time scales. At nano and meso scales, the mismatch between elastic and plastic properties of each grain in a polycrystalline material results in local stress concentrations and in crack nucleation which eventually limits the life and performance of a design. Understanding the nature and the source of local stress heterogeneities and their impact on the macroscopic behaviour require development of numerical methods describing each length and time scale, approaches to bridge between methods, and the use or development of cutting edge experimental techniques to validate the numerical results. Our research focuses on the development of different numerical methods and the linking of them to diffraction and image based experimental techniques. This research seeks to explain the effects of various environments on the performance and integrity of metallic and nonmetallic composite materials. 

The objective of the deformation lab is to characterize, formulate, and simulate deformation of materials across length and time scales. With these objectives, the fundamental goal of this research group is to help intelligent design of manufacturing routes and structural materials for optimized performance.


Research Interests

  • Mechanics of materials across length and time scales- both modeling and experimental.
  • Fatigue, fracture, and (irradiation) creep.  
  • Finite element, crystal plasticity, and dislocation dynamics.
  • Synchrotron x-ray, neutron, and electron diffraction/imaging.
See more...


Supported by




News

New facilities are added to MSDL! See more...

Gamal Assad joins the group. He will be working on experimental analysis of localized deformation.

New MESc student joins the group! Colin Versnick will be working on the deformation of solid state batteries.

A report by Dr. Ben Britton, from Imperial Collge London,  covering the "life behind the scenes" for Yi's recent paper


Recent Publications:

Abdolvand H., Wilkinson AJ., "On the effects of reorientation and shear transfer during twin formation: comparison between high resolution electron backscatter diffraction experiments and a crystal plasticity model". International Journal of Plasticity, 2016, Vol 84, P 160-182 . DOI: 10.1016/j.ijplas.2016.05.00 

Abdolvand H., Wilkinson AJ., "Assessment of residual stress fields at deformation twin tips and the surrounding environments". Acta Materialia, 2016, Vol 105, P 219-231. DOI: 10.1016/j.actamat.2015.11.036



Meet us at:

Talk by Hamid Abdolvand: Deformation of polycrystals at multiple scales: linking 3D X-ray diffraction to FE modeling.

Talk by Hamid Abdolvand: Stress hot spots in HCP polycrstals
 
Talk by Hamid Abdolvand- March 6, at 1:30 PM. 
Location: Health Sciences Building (HSB), Room 236, Western University.