PhD Candidate in probabilistic lifetime assessment of nylon mooring lines 

1 måneder siden
Søk senest14.3.2024

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At NTNU, 9,000 employees and 43,000 students work to create knowledge for a better world.

You will find more information about working at NTNU and the application process here.

About the job

The Department of Marine Technology is looking for a PhD Candidate in probabilistic lifetime assessment of nylon mooring lines for offshore renewable energy. For a position as a PhD Candidate, the goal is a completed doctoral education up to an obtained doctoral degree.

This position will focus on application of probabilistic methods and structural reliability analysis to nylon mooring lines for offshore renewable energy with main focus on floating wind turbines. The objective is to identify the lifetime probability of failure, also including studies of different mooring systems. This will also allow quantification of how different variables and design parameters will influence the system performance and how they interact with each other. One of the gaps preventing such analyses at present is the quantification of uncertainties in nylon material and rope properties and how they change during the lifetime. The probabilistic approach also requires application of load effect calculation tools which can correctly represent the creep and stiffness properties of nylon ropes.

The PhD work will accordingly need to address the following topics: (i) Quantification of uncertainties associated with nylon rope properties based on new test data, including time-varying degradation effects (ii) Identification of relevant failure modes for both single nylon mooring lines and for different mooring configurations. (iii) Statistical models of mooring line load effects both in relation to extreme values and stress cycle distributions (iv) Dedicated methods and tools for reliability assessment which can account for long-term behavior of nylon mooring lines.

A basic hypothesis is that long-term degradation effects can be estimated based on existing knowledge, new laboratory and field testing without accelerated test programs, also combined with theoretical/numerical modelling. Accordingly, the work of the PhD-candidate should strive to confirm the validity of this basic hypothesis.

Your immediate leaders are your Main Supervisor and the Head of the Department.

Duties of the position

  • conduct original, cutting-edge research, including critical literature review to identify the state-of-the-art and research gaps, designing research projects and methodologies, and generating, collecting, and analysing data
  • publish findings in top-tier journals and present at international conferences
  • collaborate actively within the project team and with external partners
  • engage in professional development through attending seminars, lectures, and workshops as well as networking (all supported financially and professionally)

Required selection criteria

  • professionally relevant background in Marine, Mechanical, Aerospace or Structural Engineering, or a related discipline
  • education must correspond to a five-year Norwegian degree program, where 120 credits are obtained at master's level
  • strong academic background from your previous studies and an average grade from the master's degree program, or equivalent education, which is equal to B or better compared with NTNU's grading scale. If you do not have letter grades from previous studies, you must have an equally good academic basis. If you have a weaker grade background, you may be assessed if you can document that you are particularly suitable for a PhD education
  • master's students can apply, but the master's degree must be obtained and documented by August 2024
  • meet the requirements for admission to the faculty's doctoral program (
  • good skills in English both written and spoken
  • proficiency in finite element methods and probabilistic modelling
  • strong knowledge in continuum and damage mechanics

The appointment is to be made in accordance with Regulations on terms of employment for positions such as postdoctoral fellow, Phd candidate, research assistant and specialist candidate and Regulations concerning the degrees of Philosophiae Doctor (PhD) and Philosodophiae Doctor (PhD) in artistic research national guidelines for appointment as PhD, post doctor and research assistant 

Preferred selection criteria

  • experimental experience and in strain measurement
  • knowledge in composite materials
  • programming skills in MATLAB and Python
  • experience in statistical modelling and structural reliability analysis

Personal characteristics

  •     self-motivated with intellectual curiosity
  •     strong critical thinking and problem-solving skills
  •     attention to detail
  •     excellent communication, collaboration, and networking abilities
  •     ability to work independently and as part of a team

Emphasis will be placed on personal and interpersonal qualities.

We offer

Salary and conditions

As a PhD candidate (code 1017) you are normally paid from gross NOK 532 200 per annum before tax, depending on qualifications and seniority. From the salary, 2% is deducted as a contribution to the Norwegian Public Service Pension Fund.

The period of employment is 3 years.
Appointment to a PhD position requires that you are admitted to the PhD programme in Engineering within three months of employment, and that you participate in an organized PhD programme during the employment period.


The engagement is to be made in accordance with the regulations in force concerning State Employees and Civil Servants, and the acts relating to Control of the Export of Strategic Goods, Services and Technology. Candidates who by assessment of the application and attachment are seen to conflict with the criteria in the latter law will be prohibited from recruitment to NTNU. After the appointment you must assume that there may be changes in the area of work.

The position is subject to external funding by the KSP Project NYMOOR.

It is a prerequisite you can be present at and accessible to the institution daily.

About the application

The application and supporting documentation to be used as the basis for the assessment must be in English.

Publications and other scientific work must be attached to the application. Please note that your application will be considered based solely on information submitted by the application deadline. You must therefore ensure that your application clearly demonstrates how your skills and experience fulfil the criteria specified above.

The application must include: 

  • CV and certificates
  • transcripts and diplomas for bachelor's and master's degrees. If you have not completed the master's degree, you must submit a confirmation that the master's thesis has been submitted
  • copy of the master's thesis. If you recently have submitted your master's thesis, you can attach a draft of the thesis. Documentation of a completed master's degree must be presented before taking up the position
  • cover letter explaining your motivation and qualifications for the position
  • research proposal aligned with the position's objectives including a brief background and the state-of-the-art, research questions, methodologies, and anticipated outcomes
  • contact information for three referees
  • documents indicating research or professional background relevant to the position (publications, project report, etc.)

If all, or parts, of your education has been taken abroad, we also ask you to attach documentation of the scope and quality of your entire education, both bachelor's and master's education, in addition to other higher education. Description of the documentation required can be found here. If you already have a statement from NOKUT, please attach this as well.

We will take joint work into account. If it is difficult to identify your efforts in the joint work, you must enclose a short description of your participation.

In the evaluation of which candidate is best qualified, emphasis will be placed on education, experience and personal and interpersonal qualities. Motivation, ambitions, and potential will also count in the assessment of the candidates. 

NTNU is committed to following evaluation criteria for research quality according to The San Francisco Declaration on Research Assessment - DORA.

General information

Working at NTNU

NTNU believes that inclusion and diversity is our strength. We want to recruit people with different competencies, educational backgrounds, life experiences and perspectives to contribute to solving our social responsibilities within education and research. We will facilitate for our employees’ needs.

NTNU is working actively to increase the number of women employed in scientific positions and has a number of resources to promote equality.


The city of Trondheim is a modern European city with a rich cultural scene. Trondheim is the innovation capital of Norway with a population of 200,000. The Norwegian welfare state, including healthcare, schools, kindergartens and overall equality, is probably the best of its kind in the world. Professional subsidized day-care for children is easily available. Furthermore, Trondheim offers great opportunities for education (including international schools) and possibilities to enjoy nature, culture and family life and has low crime rates and clean air quality.


As an employee at NTNU, you must at all times adhere to the changes that the development in the subject entails and the organizational changes that are adopted.

A public list of applicants with name, age, job title and municipality of residence is prepared after the application deadline. If you want to reserve yourself from entry on the public applicant list, this must be justified. Assessment will be made in accordance with current legislation. You will be notified if the reservation is not accepted.

If you have any questions about the position, please contact Professor Bernt Leira, [email protected]. If you have any questions about the recruitment process, please contact Marit Gjersvold, [email protected].

If you think this looks interesting and in line with your qualifications, please submit your application electronically via with your CV, diplomas and certificates attached. Applications submitted elsewhere will not be considered. Upon request, you must be able to obtain certified copies of your documentation.  

Application deadline:14.03.2024

Norges Teknisk-naturvitenskapelige Universitet Ntnu

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