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PhD student "Micromechanics of fiber-reinforced semi-crystalline thermoplastics"

PhD student "Micromechanics of fiber-reinforced semi-crystalline thermoplastics"

Position
PhD-student
Department(s)
Mechanical Engineering
FTE
1,0
Date off
03/10/2021
Reference number
V35.5086

Job description

The Eindhoven University of Technology (TU/e) has the following vacancy

PhD student "Micromechanics of fiber-reinforced semi-crystalline thermoplastics"

in the section Mechanics of Materials, Department of Mechanical Engineering

The PhD student position is available in the section Mechanics of Materials, and will be supervised by dr. Hans van Dommelen and prof. Leon Govaert.

Section description

The research activities of the section Mechanics of Materials concentrate on the fundamental understanding of various macroscopic problems in materials processing, forming and application, which emerge from the physics and the mechanics of the underlying material microstructure. The main challenge is the accurate prediction of mechanical properties of materials with complex microstructures, with a direct focus on industrial needs. The thorough understanding and modelling of ‘unit’ processes that can be identified in the complex evolving microstructure is thereby a key issue. The section has a unique research infrastructure, both from an experimental and computational perspective.

Fiber-reinforced semi-crystalline thermoplastics

Thermoplastic composites offer the potential for lightweight solutions, can be produced rapidly and also can be recycled effectively. Prediction of the performance of thermoplastic composite parts requires a three‐dimensional anisotropic mechanical model that captures the response of the continuous (unidirectional) or discontinuous (short/long) fibre‐reinforced plies. This demands an essentially multiscale approach, which starts from the influence of processing on microscale variation in the crystalline morphology of the matrix and local fibre (volume) distribution, accounts for variation in fibre orientations, either by design (laminate) or related to processing (local structural rearrangements). Challenges are to establish a direct link between the crystalline morphology and the 3D constitutive response of the matrix and to translate the local process‐induced structure to the mesoscopic, anisotropic mechanical response. To enable simulation of macroscopic assembled systems, a macroscopic constitutive relation needs to be developed that captures this anisotropic, time‐dependent response.

Aim of the PhD project

The aim of this project is to provide a methodology that directly links microstructural information (matrix morphology and fibre distribution), to macroscopic laminate performance. A three‐dimensional anisotropic mechanical model will be developed that captures the anisotropy, nonlinearity, and time-dependence of the mechanical response of short/long/ and continuous fibre reinforced thermoplastics. The modular EGP model will be employed to create a constitutive model that accurately captures the observed deformation kinetics of the matrices chosen.  Samples with different microstructures will be evaluated to establish how microstructural parameters relate to the parameters in the obtained constitutive model. In a micromechanical approach, the developed matrix model will subsequently be employed to complete the structure‐property translation to the macroscopic ply level; this step is required to enable simulations on the product scale. The developed models will be validated in a full‐scale demonstrator problem involving an overmoulded product.

Job requirements

Qualification of applicant

Talented, enthusiastic candidates with excellent analytical and communication skills holding a university degree (MSc, with high grades) in Mechanical Engineering, Materials Science or Applied Mathematics are encouraged to apply. A strong interest in mechanics of materials is required. Experience in multi-scale modelling and micromechanics, and experimental mechanics is of benefit.

Conditions of employment

  • A meaningful job in a dynamic and ambitious university with the possibility to present your work at international conferences.
  • A full-time employment for four years, with an intermediate evaluation (go/no-go) after nine months.
  • To develop your teaching skills, you will spend 10% of your employment on teaching tasks.
  • To support you during your PhD and to prepare you for the rest of your career, you will make a Training and Supervision plan and you will have free access to a personal development program for PhD students (PROOF program).
  • A gross monthly salary and benefits (such as a pension scheme, pregnancy and maternity leave, partially paid parental leave) in accordance with the Collective Labor Agreement for Dutch Universities.
  • Additionally, an annual holiday allowance of 8% of the yearly salary, plus a year-end allowance of 8.3% of the annual salary.
  • Should you come from abroad and comply with certain conditions, you can make use of the so-called ‘30% facility’, which permits you not to pay tax on 30% of your salary.
  • A broad package of fringe benefits, including an excellent technical infrastructure, moving expenses, and savings schemes.
  • Family-friendly initiatives are in place, such as an international spouse program, and excellent on-campus children day care and sports facilities.

Information and application

More information

Do you recognize yourself in this profile and would you like to know more? Please contact
dr. Hans van Dommelen, j.a.w.v.dommelen[at]tue.nl.

For information about terms of employment, click here or contact HRAdvicesME[at]tue.nl

Please visit www.tue.nl/jobs to find out more about working at TU/e!

Application

We invite you to submit a complete application by using the 'apply now'-button on this page.
Application documents (in PDF format) must contain:

  • letter of motivation, detailed curriculum vitae including photograph,
  • transcripts of BSc and MSc degrees (with grades),
  • and contact information of two potential referees.

We look forward to your application and will screen it as soon as we have received it.
Screening will continue until the position has been filled.

We do not respond to applications that are sent to us in a different way.

Please keep in mind you can upload only 5 documents up to 2 MB each. If necessary please combine files.