Master Thesis Topic: Implementation and validation of a stress dependent vacancy diffusion model

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Master Thesis Topic: Implementation and validation of a stress dependent vacancy diffusion model

At a glance

At KAI (Kompetenzzentrum Automobil- und Industrieelektronik GmbH), you will perform your thesis project in an industrial research environment, guided and supported by experienced researchers. We work in close cooperation with universities and research facilities supporting your academic education, whereas our industrial partner Infineon offers interesting opportunities for a prospective career path in the semiconductor industry. Infineon is a global leader in the production of power electronics. Comparably thick metallization layers are a crucial part of such power electronics, since they prevent that the energy introduced into the system by resistance heating, due to the high operating currents, leads to overheating of these devices. Because power electronics are commonly operated under harsh functional or environmental conditions, a crucial part in the development of devices is reliability testing and lifetime monitoring. In this project you should implement and test a material model for stress dependent vacancy diffusion into the commercial finite element software ANSYS via its FORTRAN subroutine interfaces, to study the effect of pore formation by trapping diffusing vacancies at microstructural features under reliability testing conditions.

Quick info



Entry level

0-1 year

Job ID



Oct 01, 2021


Full time



Job description

KAI GmbH in cooperation with Infineon Technologies Austria AG is involved in the EU project MULTICHARM for the multidisciplinary characterization and modelling for innovative process and product integration of power semiconductors. Within the framework of this project we offer this master's thesis within the Materials Science and Simulation (MSS) group at KAI.

Job description:

  • Understanding the problem through the exchange with experts as well as reading of the ANSYS manual and specific publications (material model)
  • Implementation of the material model into ANSYS's FORTRAN subroutine interfaces
  • Calibrating / validating the model on simple geometries (e.g. against certain pore sizes after a known load history)
  • Documentation of the produced results and preparation of a master's thesis

Further Information
Start: October 2021
Type of employment: Temporary / Full-time (Flexible working hours from Monday to Friday between 6 a.m. and 7 p.m.)
Duration: min. 8 months

This thesis has to be written in cooperation with an university.


You are an master student in the field of Applied Mathematics, Mechanical Engineering, Theoretical Physics or similar. You should also offer:

  • C oding skills
  • Interest in multi-physics problems (here stress diffusion coupling)
  • Programming skills in FORTRAN (ANSYS interface is written in FORTRAN; C++ as an alternative)
  • Further beneficial skills:
  • Basic knowledge of the finite element method
  • Basic knowledge in numerical methods
  • German and/or English skills

This position is subject to the collective agreement for workers and employees in the electrical and electronics industry (full-time), employment group D for master students (

Please attach the following documents (English or German) to your application:

  • Motivation letter
  • CV
  • Certificate of matriculation at a university
  • Transcript of records
  • Highest completed educational certificate (Matura certificate for Bachelor students, Bachelor certificate for Master students)
  • Reference letter

About Us

Part of your life. Part of tomorrow.

We make life easier, safer and greener - with technology that achieves more, consumes less and is accessible to everyone. Microelectronics from Infineon is the key to a better future. Efficient use of energy, environmentally-friendly mobility and security in a connected world - we solve some of the most critical challenges that our society faces while taking a conscientious approach to the use of natural resources.

  • The term gender in the sense of the General Equal Treatment Act (GETA) or other national legislation refers to the biological assignment to a gender group. At Infineon we are proud to embrace (gender) diversity, including female, male and diverse.

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