05/05/2021
The Human Resources Strategy for Researchers

Post-doctorate (M/F) - Theme: Elastic instabilities of rubber materials in extrusion


  • ORGANISATION/COMPANY
    CNRS
  • RESEARCH FIELD
    Chemistry
    Engineering
    Physics
  • RESEARCHER PROFILE
    Recognised Researcher (R2)
  • APPLICATION DEADLINE
    25/05/2021 23:59 - Europe/Brussels
  • LOCATION
    France › PARIS 13
  • TYPE OF CONTRACT
    Temporary
  • JOB STATUS
    Full-time
  • HOURS PER WEEK
    35
  • OFFER STARTING DATE
    01/07/2021

OFFER DESCRIPTION

The goal of this post-doctoral fellowship is to quantitatively characterize these flow instabilities in a non-invasive manner using an ultrasonic velocimetry technique. The first step will be to set up the experimental device on a laboratory extruder and then to characterize locally the rubber flow field during the extrusion process. This device will enable us to identify the most sensitive materials according to their formulation and as a function of the applied mechanical stresses.

Extrusion is a key step in the processing of polymer melts involved in the design of rubber materials, specifically for tyre applications. Formulations of tyre tread materials are currently undergoing a major evolution to reduce rolling resistance. However, certain formulations lead to the appearance of surface defects under extrusion that are not acceptable for industrial applications. Recent studies have revealed that rubber may undergo elastic instabilities during the flows involved in the processes leading to such defects. One way to secure the extrusion step is to better understand the fundamental mechanisms linking the flow process to the material response.

Laboratoire Matière et Systèmes Complexes (University of Paris/CNRS),
Michelin.

More Information

Eligibility criteria

Profile and expertise: junior researcher with less than 2 years post-doctoral experience with skills in the following areas: polymeric materials, fluid mechanics, rheology, instrumentation.

Web site for additional job details

Required Research Experiences

  • RESEARCH FIELD
    Engineering
  • YEARS OF RESEARCH EXPERIENCE
    1 - 4
  • RESEARCH FIELD
    Chemistry
  • YEARS OF RESEARCH EXPERIENCE
    1 - 4
  • RESEARCH FIELD
    Physics
  • YEARS OF RESEARCH EXPERIENCE
    1 - 4

Offer Requirements

  • REQUIRED EDUCATION LEVEL
    Engineering: PhD or equivalent
    Chemistry: PhD or equivalent
    Physics: PhD or equivalent
  • REQUIRED LANGUAGES
    FRENCH: Basic

Map Information

Job Work Location Personal Assistance locations
Work location(s)
1 position(s) available at
Laboratoire Matière et Systèmes Complexes
France
PARIS 13

EURAXESS offer ID: 636563
Posting organisation offer ID: 21082

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