Open competition for the Assistant-PhD Student position in the National Science Centre funded project:
Multiscale constitutive modelling of irradiation effect on mechanical properties
of austenitic stainless steels
BSP-DSP.111.7.2025
Project information:
Project leader: PhD Aneta Ustrzycka
Source of funding: National Science Centre SONATA BIS 10
Implementing institution: Institute of Fundamental Technological Research Polish Academy of Sciences
Position: Assistant-PhD Student
Project duration: 10 months
Deadline for applications: March 21st, 2025
Project description
The evaluation of damage generated in solids located in radiative media is a major challenge in many technological domains connected to electronic, space and nuclear industries. The development of nuclear reactor structural materials is the most important part of the effort leading to improve a reliable, environmentally safe, and more efficient nuclear energy production system
The aim of the project consists of developing a physically based, multiscale constitutive model of irradiated materials. The effect of irradiation on the mechanical properties of metals subjected to various mechanical loading and temperature conditions will be analysed.
The research will be carried out within two major parts comprising the experiments and constitutive modelling of radiation induced damage mechanisms. The simulation of irradiation effects in structural materials using ions irradiation will be performed. The scanning transmission electron microscopy (TEM) will be used to identification of radiation defects. The irradiated layers will be analysed by the nanoindentation technique in order to measure the mechanical properties. The constitutive multiscale model for irradiated solid materials will be developed in the framework of multiscale description and will take into account the relations between all the parameters and the state functions at the micro-, the meso- and the macroscopic levels. At the atomic scale, processes occurring in irradiated materials during a displacement phase of the collision will be studied by molecular dynamics (MD) simulations. At the meso- and macroscopic levels, a novel material model based on nonlocal peridynamic theory will be proposed. Peridynamic theory is a powerful tool for the modelling of materials involving discontinuities. Peridynamics makes use of integral equations to compute the force on a particle. Spatial derivatives are not used and the equations remain valid at a discontinuity.
a) b1) b2)
Fig. a) Mechanical effects of radiation damage b1) radiation hardening b2) volumetric swelling
PhD student's tasks:
Active participation in research carried out in the project, including participation in the development of numerical codes and performing molecular dynamic (MD) simulations and peridynamic (PD) simulations; participation in an analysis of results of different experimental techniques; publication and presentation of results at scientific conferences.
The work will be performed under the supervision of the project manager.
Expectations towards candidate:
1) Master's degree in progress or Master's degree in technical sciences (preferred disciplines: mechanical engineering or information technology),
2) during the project implementation, participation in doctoral studies
3) programming skills in C/C++, Fortran; Python
4) experience or familiarity with DFT (Density Functional Theory) and software for material simulations (e.g., VASP, Quantum ESPRESSO)
5) knowledge and experience in Molecular Dynamics (MD) simulations, including working with tools like LAMMPS
6) basic knowledge of solid mechanics
7) high motivation for scientific work
Conditions of employment:
1) Type of employment: fellowship,
2) Scholarship: up to 1500 PLN/month
3) Timespan: 10 months
Recruitment according to regulations on awarding NCN scholarships in research projects
funded by the National Science Centre
https://ncn.gov.pl/sites/default/files/pliki/uchwaly-rady/2019/uchwala90_2019-zal1_ang.pdf
The documents:
1) Motivation letter,
2) CV with list of publications,
3) Copy of Master diploma or statement regarding the progress of Master’s thesis
4) Statement as follows:
"Wyrażam zgodę na przetwarzanie danych osobowych zawartych w mojej ofercie pracy na potrzeby niezbędne do przeprowadzenia procesu rekrutacji prowadzonego przez IPPT PAN z siedzibą w Warszawie, ul. A. Pawińskiego 5B, zgodnie z art. 13 ust. 1 i 2 rozporządzenia (UE)
2016/679 Parlamentu i Rady z dnia 27 kwietnia 2016 r. w sprawie ochrony osób fizycznych w
zakresie przetwarzania danych osobowych i swobodnego przepływu tych danych oraz uchylenia dyrektywy 95/46 / WE (RODO)”
Contact:
Aneta Ustrzycka Ten adres pocztowy jest chroniony przed spamowaniem. Aby go zobaczyć, konieczne jest włączenie w przeglądarce obsługi JavaScript.