KTH Royal Institute of Technology, School of Engineering Sciences

KTH Royal Institute of Technology in Stockholm has grown to become one of Europe’s leading technical and engineering universities, as well as a key centre of intellectual talent and innovation. We are Sweden’s largest technical research and learning institution and home to students, researchers and faculty from around the world. Our research and education covers a wide area including natural sciences and all branches of engineering, as well as in architecture, industrial management, urban planning, history and philosophy.

The School of Engineering Sciences carries out a wide range of research at the international front line, from fundamental disciplines such as Physics and Mathematics, to Engineering Mechanics with applications such as Aeronautics and Vehicle Engineering. We also offer university degree programs in Engineering Physics, Vehicle Engineering, and 'Open entrance', as well as a number of international masters programmes

Solid Mechanics is a classical engineering science discipline ranging from basic to applied science. The topic can be regarded as a link between materials science and applied mechanics with emphasis on the latter. It deals with the mechanical properties of materials and structures. Research at the Department of Solid Mechanics at KTH focuses on computational methods, fracture mechanics, composite mechanics, contact mechanics, material mechanics, biomechanics, paper mechanics, fatigue and reliability. A primary goal of the research is to develop methods for the reliable design of structures, material systems and processes.

Job description

The Department of Solid Mechanics offers a Ph.D. position focusing on crack propagation at large fatigue loads and under environmental influence. The background is fatigue with rapid crack growth to early final rupture in pipe systems where hot and cold water are mixed. At the mixing point, turbulent fluid flow develops with transmission of thermal fluctuations to the pipe material. The thermal fluctuations impose plastic strains with early crack initiation and rapid crack propagation. Furthermore, the material properties are degraded compared with the primary material. The degradation is due to environment, primarily water, and manufacturing with cold working and welding.

The purpose of the work is improved, more precise and more easy to use, methods and tools for the prediction of crack growth at the mixing points between hot and cold water in pipe systems. The work will focus on fundamental questions on crack growth at large cyclic loads and how these should be determined at the relevant geometry, component size and material. Crack growth data will be determined for the pipe material in environment and in the condition after manufacturing.

The Ph.D. student position is limited to 5 years and includes up to 20 % departmental duties, normally teaching assistant at tutorials and laboratory works.


The applicant should have a master degree or the equivalent with specialization in solid mechanics or the equivalent. Knowledge or interest in fluid mechanics is a merit. Special emphasis will be placed on a documented interest for research activities such as a good master thesis. The applicant must be motivated to undertake postgraduate studies, to conduct independent work, to conduct critical analysis of results and have good interpersonal and communication skills. The student must have good proficiency in Swedish in order to contribute to the departmental teaching activities.

Applicants with a degree, and those who are close to the completion of their master thesis, are welcome to apply for the position.

Trade union representatives

You will find contact information to trade union representatives at KTH:s webpage.


Log into KTH's recruitment system in order to apply to this position. You are the main responsible to ensure that your application is complete according to the ad.

Your complete application must be received at KTH no later than the last day of application, midnight CET/CEST (Central European Time/Central European Summer Time).

The application should include a letter that explains the interest in the position and in which the applicant describes himself or herself as well as her or his qualifications and interests. In addition, the Curriculum Vitae (CV) and copies of degree certificates should be attached. The applicant must be prepared to submit a copy of his/her master thesis upon request. All appendices must be in PDF-format.


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Disclaimer: In case of discrepancy between the Swedish original and the English translation of the job announcement, the Swedish version takes precedence.

Type of employment Temporary position longer than 6 months
Contract type Full time
First day of employment According to agreement
Salary Monthly salary according to KTH's Ph.D. student salary agreement
Number of positions 1
Working hours 100%
City Stockholm
County Stockholms län
Country Sweden
Reference number S-2017-0247
  • Bo Alfredsson, Professor, +46 8 790 76 67, alfred@kth.se
  • Pål Efsing, Adjunct Professor, +46 70-625 45 14, pal.efsing@vattenfall.com
Published 23.Feb.2017
Last application date 02.Apr.2017 11:59 PM CET

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