Continuous in-situ synchrotron micro-XCT observation of thermoplastic composite laminate consolidation
Abstract
The present work deals with the in-situ simultaneous microscopic and macroscopic observation of thermoplastic composites laminate consolidation under hot press conditions. With this aim, first the inCO2TO setup was developed. Then, microscopic observations of porosities evolution by fast micro-XCT were carried out at the European Synchrotron Radiation Facility. Finally, a 3D image processing methodology enabled to draw several important conclusions. They show that a decompaction phenomenon occurs when the temperature reaches the melting onset point, mainly at ply interfaces by a substantial increase of voids. Pressure has been demonstrated effective to limit this phenomenon and consequently reduce the presence of voids. Different void reduction mechanisms were identified by statistical and morphological analysis within plies and at the interfaces depending on consolidation pressure. A main outcome is the difficulty to eliminate interlaminar voids at low pressure whereas medium-sized intralaminar voids are significantly reduced.
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BibTeX
@article{reun2026continuous,
title = {{Continuous in-situ synchrotron micro-XCT observation of thermoplastic composite laminate consolidation}},
author = {Adrien Le Reun and Nicolas Lefevre and Henri-Alexandre Cayzac and Vincent Sobotka and Steven Le Corre and Arthur Lévy},
journal = {Composites Part B: Engineering},
year = {2026},
month = sep,
doi = {10.1016/j.compositesb.2026.114009},
url = {https://hal.science/hal-05741119v1},
note = {CC BY-NC-SA 4.0},
}
RIS
TY - JOUR
TI - Continuous in-situ synchrotron micro-XCT observation of thermoplastic composite laminate consolidation
AU - Adrien Le Reun
AU - Nicolas Lefevre
AU - Henri-Alexandre Cayzac
AU - Vincent Sobotka
AU - Steven Le Corre
AU - Arthur Lévy
PY - 2026
DA - 2026/09/21
JO - Composites Part B: Engineering
DO - 10.1016/j.compositesb.2026.114009
UR - https://hal.science/hal-05741119v1
AB - The present work deals with the in-situ simultaneous microscopic and macroscopic observation of thermoplastic composites laminate consolidation under hot press conditions. With this aim, first the inCO2TO setup was developed. Then, microscopic observations of porosities evolution by fast micro-XCT were carried out at the European Synchrotron Radiation Facility. Finally, a 3D image processing methodology enabled to draw several important conclusions. They show that a decompaction phenomenon occurs when the temperature reaches the melting onset point, mainly at ply interfaces by a substantial increase of voids. Pressure has been demonstrated effective to limit this phenomenon and consequently reduce the presence of voids. Different void reduction mechanisms were identified by statistical and morphological analysis within plies and at the interfaces depending on consolidation pressure. A main outcome is the difficulty to eliminate interlaminar voids at low pressure whereas medium-sized intralaminar voids are significantly reduced.
SN - 1359-8368
SN - 1879-1069
ER -