Reader

• Aug 2022 - Present

Senior Lecturer

• Jan 2018 - Sep 2022

I hold a senior lectureship position at Oxford Brookes University, UK as well as a senior research fellowship at the Nuffield Department of Orthopedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, UK. I am the subject coordinator for final year students of all of the Engineering courses.My latest research is summarized here: https://metabiomec.com/

Research Fellow

• Aug 2020 - Present

Senior Research Associate

• Jan 2014 - Present

I am currently supported by an EPSRC grant on Hydrogen embrittlement in metals.My research interests includes: a) Computational modelling of hydrogen embrittlement in steels. Diffusion models and their implementation in a Finite Element framework. Developing appropriate micromechanical modelling using information obtained from modelling and experimental results of the research partners conducted across a range of length scales of steel. The development of cohesive zone modelling for crack initiation and propagation. Integration of models in Abaqus by writing appropriate User subroutines in FORTRAN such as user element, user material. b) Computational modelling of composite materials. I have been working on direct methods to compute the failure load of laminates structures. The method used is ‘linear matching method’ which essentially allows us to deal with a nonlinear material through series of linear calculations. This involves the use of Abaqus to compute linear elastic calculations and a user subroutine UMAT to implement the ‘matching method’. c) 3D Fractional viscoelasticity to model viscoelastic materials and tissues. I have been fascinated by fractal geometries of real bio-materials especially tissues. The use of non integer order operators, such as derivative and integral, in the constitutive law leads to time-dependent models which give perfect fits with experimental creep and relaxation tests. We implemented these fractional models into Abaqus. d) Experimental test: Creep and relaxation tests in polymers using the Instron machine and digital image correlation to recover strain in two directions.e) Cardiovascular stents: fatigue life and flexibility. I created a parametric model of the stent and analyzed how the fatigue life was affected by the geometry. The idea was to find an ‘optimum’ design in order to improve fatigue life and durability. I also was involved in designing the gigacycle fatigue experiments.

Postdoctoral research assistant

• Aug 2011 - Present

I am currently working on a European Framework 7 project “MINTWELD”. The project involves collaboration with eleven academic and industrial partners from across Europe. The overall aim of the project is to develop models of interface evolution during welding and the effect of the resulting microstructure on in-service performance of welded components.My key tasks are on computational modeling of hot cracking and in-service failure from hydrogen embrittlement, making use of models and information obtained from modelling and experimental programmes of the research partners conducted across a range of length scales. In particular I have been working on:a. The development of cohesive zone models for modeling crack initiation and propagation.b. The integration of these models in the commercial finite element package ABAQUS by writing user element (UEL) and user material (UMAT) subroutines.c. Conducting finite element simulations of hot cracking and crack growth in the presence of hydrogen.d. Conducting research activities with partner organizations and experimental test on hot cracking as well as nanoindentation test on dissimilar welding interface.

College Lecturer in engineering at Christ Church

• Sep 2012 - Jan 2018

I am currently teaching static and Mechanic of Structures, Dynamics, Structural failure, Mechanics of material and solid mechanics to first, second and third year students. I am also involved in exercise classes and weekly consultation hours for a group of students (100 or more) during the term. I also corrected and marked exams at the end of each term.I was also in the panel for I year college admission to read Engineering. It was a really pleasant experience and it was useful to have more insight in the Oxford system.

Lab teacher

• Mar 2012 - Apr 2012

I taught a Thermodynamics of alloys lab. I conducted the lab with about 10 small groups of 6/7 students at the time. The lab consisted of two parts: 1) an experimental session to determine cooling curves of a Sn/Pb system and2)a theoretical part to determine the equilibrium phase diagram from both thermodynamic consideration and experimental data carried out in 1).It was a pleasant experience as I liked it. It was also rewarding to see them understanding how a phase diagram is actually drawn.

Marie Curie Fellow

• May 2019 - Jun 2020

Olga has joined the University of Luxembourg as a Marie Curie Fellow and holds a senior lectureship position at Oxford Brookes University, UK as well as a senior research fellowship at the Nuffield Department of Orthopedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, UK Olga has joined the University of Luxembourg as a Marie Curie Fellow and holds a senior lectureship position at Oxford Brookes University, UK as well as a senior research fellowship at the Nuffield Department of Orthopedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, UK

Summer school Lecturer

• Jul 2012 - Aug 2012

" Leading Edges in Welding: Summer School in Modelling of Welding" was focused on modelling techniques and applications of various type of welding processes. I gave lectures on computational methods for weld failure. In particular Finite element method, computational material modelling and modeling of weld failure, It was an important experience as I had to speak to a mixed audience: experts on the field but also phD students and pure experimentalist. " Leading Edges in Welding: Summer School in Modelling of Welding" was focused on modelling techniques and applications of various type of welding processes. I gave lectures on computational methods for weld failure. In particular Finite element method, computational material modelling and modeling of weld failure, It was an important experience as I had to speak to a mixed audience: experts on the field but also phD students and pure experimentalist.

Researcher

• Oct 2010 - Jul 2011

I was co-PI of a European Framework 7 project “Destenee” on Optimization of durability and flexibility of cardiac stents. My key tasks were: a. Python scripts to reproduce a parametric model of the stent. b. Computational modelling of shape memory alloy materials (UMAT in ABAQUS) c. Cardiac stent modelling and interaction between stent-balloon and vessel. d. Implementation of Dang Van high cycle fatigue criterion and application to the stent structure. e. Collaboration with industrial partner was fundamental for the development of the model and for the experimental results on high and giga cycle fatigue test.

Stress engineer

• Mar 2010 - Sep 2010

I worked on FEM modelling of some structures of the nuclear plant AP1000. My role was to model large nuclear plant components. I used the commercial software ANSYS. I gained experience of modelling large components used in the nuclear industry as well as working in a company where I needed to combine strict time scales strict and excellent performances. I worked on FEM modelling of some structures of the nuclear plant AP1000. My role was to model large nuclear plant components. I used the commercial software ANSYS. I gained experience of modelling large components used in the nuclear industry as well as working in a company where I needed to combine strict time scales strict and excellent performances.