| KEYWORD |
Assessment of micromechanical properties of PEKK polymer by means of nanoindentation tests at high temperatures
Reference persons ERASMO CARRERA, ALFONSO PAGANI, ENRICO ZAPPINO
External reference persons Prof. Marco Gigliotti, Institut P', ISAE-ENSMA
Research Groups 26- MUL2
Description Polymer composites have been more and more used in aeronautical structures due to their light
weight and good mechanical resistance. However, most of them are based on thermosetting
resins, which are not recyclable. In this context, an important effort of research is made
nowadays to develop new composites based on thermoplastic polymers that can withstand high
loads, but also work at high temperatures as defined by the applications in aircraft engines.
This internship will focus on a study of a PEKK polymer destined to be used as a matrix of a
carbon reinforced composite. This is a relatively new material and its mechanical behaviour in
the oxidative environment under high temperatures has not been studied yet. This semicrystalline
polymer is meant to be used at temperatures above its glass transition, which may
significantly affect its mechanical response. The nanoindentation technique, employed in this
internship, enables a study of local mechanical properties at micro or nanoscale. The
nanoindentation equipment will be coupled with a heating element to directly measure the
polymer response at the operational temperatures. Moreover, the same technique will be
employed to study local mechanical properties of PEKK polymer samples previously subjected to
macroscopic mechanical loadings to verify possible changes of microstructure.
This internship is a part of ANR ImPEKKable research program – in collaboration with AIRBUS
Group Innovation, ARKEMA, PIMM ENSAM Paris - and will run in parallel with a PhD thesis
started at PPRIME Institute (ISAE-ENSMA) last year.
See also tesi-master-isae-ensma-poitiers-2018.pdf
Deadline 31/12/2018
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