research

We are looking for a candidate with a Ph.D. degree to study fracture problems in bimetallic pipelines,  API X65 internally clad with alloy 625. The project has direct application to offshore exploration in Brazil deepwater fields. The project is going to be funded by the Petrobras company. The chosen candidate will develop a parametric model to model the welded joint of this type of pipes using python/Abaqus, being the numerical model as close as possible to the real geometry.

We have published a paper called "Micromechanical model for prediction of the fatigue limit for unidirectional fibre composites" in Mechanics of Materials. See the link here.

I hope some of you will find our recent paper in the Journal of the Mechanics and Physics of Solids interesting. The Abaqus user element (UEL) subroutine developed to implement strain gradient plasticity theories with energetic and dissipative higher order stresses (Gudmundson 2004, Fleck and Willis 2009) can be downloaded from www.empaneda.com/codes

The role of plastic strain gradients in the crack growth resistance of metals

Emilio Martínez-Pañeda, Vikram S. Deshpande, Christian F. Niordson, Norman A. Fleck

Published in Phys. Rev. B: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.97.184305

Published in Nanoscale and Microscale Thermophysical Engineering: https://www.tandfonline.com/doi/full/10.1080/15567265.2019.1576816

Wenjie Xia, Xin Qin, Yao Zhang, Rober Sinko, Sinan Keten

Macromolecules (2018), https://pubs.acs.org/doi/abs/10.1021/acs.macromol.8b02243

Wenjie Xia, Fernando Vargas-Lara, Sinan Keten, Jack F. Douglas

ACS Nano (2018), https://pubs.acs.org/doi/abs/10.1021/acsnano.8b00524

Liu, M., Wu, J., Gan, Y., Hanaor, D. A. H., & Chen, C. Q. International Journal of Solids and Structures, 2019, 162: 36-44.  https://www.sciencedirect.com/science/article/pii/S0020768318304827

Abstract 

I always feel puzzled that the cost of the F35 increases at “a supersonic speed”. Now based on our proposal review process, I might find some partial answers.  In 2017 and 2018, we (including a full professor at a leading research university in the US) submitted two research proposals to the Air Force Office of Scientific Research (AFOSR). Our proposal in 2017 had 7 technical concerns, but our proposal in 2018 didn’t improve at all, and had more than 30 technical concerns..

Aalto University School of Engineering in Finland invites application for 

TWO DOCTORAL STUDENT POSITIONS IN ICE MECHANICS

The positions are in the research group of Marine and Arctic Technology.