Nick Sirmas presented his PhD thesis seminar

Yesterday, one of our longest serving graduate students presented his PhD thesis seminar.  The title of the talk was “modelling of shock waves in granular media at the micro and macroscopic levels.”  Unfortunately, supervisor Dr. Matei Radulescu could not be present but our classroom was standing room only – we had a great turnout.  Congrats, Nick! Nice work. Thanks to the MCG grad student association that provided us with timbits and coffee (made all the more special because my roll-up-the-rim netted me a free coffee). ūüôā 

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Shuai Yang presented his PhD thesis seminar

Yesterday, my student Shuai Yang presented his PhD thesis seminar titled “analysis of vehicle suspension system integration with nonlinear two-terminal mass components”. Unfortunately, co-supervisor Dr. Ming Liang could not be present. We were lucky enough to have Shuai’s wife join us. Congratulations Shuai, one step closer to finishing and we are all very proud of you. 

First seminar of 2017

Kicking things off in 2017 was Simon Baril-Gosselin who presented his PhD thesis work on “Fabrication of carbon fibre opposites reinforced with carbon nanotubes”. Unfortunately, PhD supervisor Dr. Fran√ßois Robitaille was teaching and unable to attend. ¬†However, there was an enthusiastic audience and our grad students were kind enough to supply us with coffee and cookies (because all scientific talks are made better by coffee and cookies.

Simon Baril-Gosselin

Closing out 2016 – Aurelian Tanase presented his seminar

Last but not least for 2016, Aurelian Tanase presented his PhD thesis seminar, with PhD work completed under the supervision of Drs. Tavoularis and Groeneveld. The title of the talk was “flow and heat transfer in tubes with objects”.It was an interesting talk, followed by some delicious shawarma to round out our fall semester. Congrats Aurelian and here’s to 2017!

Catherine Kuforiji presented her PhD seminar

Last Friday, Catherine Kuforiji presented her PhD thesis work, giving a talk titled “Development of SS316L-AL2O3 composites for wear applications”. Supervisor Dr. Michel Nganbe was present for the seminar.  Congratulations to student and supervisor for the (near) completion of this PhD work!  Well done, Catherine, we are very proud of you.  

After the talk, I had the honour of having my photo taken with Catherine too.  ūüôā

Bochun Zhang presented his research seminar

Last Friday featured a graduate seminar by my own MASc candidate,Bochun Zhang. Bochun gave a talk titled ‚ÄúFailure Mechanism Analysis and Life Prediction based on Atmospheric Plasma-Sprayed (APS) and Electron Beam-Physical Vapor Deposition (EB-PVD) Thermal Barrier Coatings‚ÄĚ.  Bochun’s primary supervisor was Dr. Kuiying Chen, from Canada’s National Research Council, and I was the cosupervisor. Unfortunately, Dr. Chen could not attend, but I’m sure he would have been as proud of Bochun as I was! Well done, Bochun. 


First seminar of the semester – this Friday!

The first seminar of the semester will be this Friday!¬†MASc CandidateMajid Tanbakuei Kashani will be giving a talk on “Effect of Forming Process on the Deformational Behaviour of Steel Pipes”. ¬†The seminar abstract is below.

Date: Friday September 16th

Time: 2:30pm

Room: SITE J0106

 

Abstract

Buried pipeline networks play a vital role in transportation of oil and natural gas from centers of productions to centers of consumptions. A common manufacturing technique for such pipes is the UOE process, where a flat plate is first formed into a U shape, then in an O shape, welded at the seam, and Expanded before being shipped on site. The UOE forming process induces residual strains in the pipe.

When buried pipelines cross the regions of discontinuous permafrost, they undergo differential frost heaving, inducing significant bending deformations, which potentially induce local buckling in the pipe wall. To control local buckling, design standards impose threshold limits on buckling strains. Such threshold values are primarily based on costly full-scale experimental results. Past nonlinear finite element analysis attempts aiming at determining the threshold buckling strains have neglected the presence of residual stresses induced by UOE forming and were thus found to grossly overestimate the buckling strains compared to those based experiments.

Within the above context, the present study focuses on developing a numeric technique to predict the residual stresses induced in UOE forming, and incorporating the residual stresses in 3D nonlinear FEA modeling to predict improved buckling strain limits. Comparisons against conventional analysis techniques that omit residual stresses reveal the importance of incorporating residual stresses when quantifying buckling strains.