TY - GEN
T1 - Single fibre characterization of heavily curved polymer fibres using X-ray computed tomography
AU - Salaberger, Dietmar
AU - Lummerstorfer, Thomas
AU - Jerabek, Michael
AU - Kastner, Johann
N1 - Publisher Copyright:
© CCM 2020 - 18th European Conference on Composite Materials. All rights reserved.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020
Y1 - 2020
N2 - The material system polypropylene filled with long polyethylene terephthalate fibres was investigated by CT analyses. Micro-structural features as length, orientation, diameter and content were determined comprehensively. Beside the characterisation of an undamaged multi purpose test specimen (MPS) a broken Charpy impact tested specimen was analysed, too. The fibres that were pulled out of the matrix were segmented and analysed separately in order to determine the free fibre length. The extraction of relevant features was performed on single fibre basis with a template matching apporoach for medial axes extraction. The following image processing steps for separating and connecting fibre segments correctly were optimized for the heavily curved polymer fibres. Together with a micro-structural characterisation of undamaged MPS specimens, valuable data for understanding the influences of fibre length, orientation and complex pathway on mechanical behaviour was generated. The high amount of curved fibres together with the difference of Euclidian and curved average lengths make it obvious that the consideration of PET fibres as curved is essential for modelling the real material behaviour with the determined micro-structural values.
AB - The material system polypropylene filled with long polyethylene terephthalate fibres was investigated by CT analyses. Micro-structural features as length, orientation, diameter and content were determined comprehensively. Beside the characterisation of an undamaged multi purpose test specimen (MPS) a broken Charpy impact tested specimen was analysed, too. The fibres that were pulled out of the matrix were segmented and analysed separately in order to determine the free fibre length. The extraction of relevant features was performed on single fibre basis with a template matching apporoach for medial axes extraction. The following image processing steps for separating and connecting fibre segments correctly were optimized for the heavily curved polymer fibres. Together with a micro-structural characterisation of undamaged MPS specimens, valuable data for understanding the influences of fibre length, orientation and complex pathway on mechanical behaviour was generated. The high amount of curved fibres together with the difference of Euclidian and curved average lengths make it obvious that the consideration of PET fibres as curved is essential for modelling the real material behaviour with the determined micro-structural values.
KW - Computed tomogrpahy
KW - Fibre reinforced polymer
KW - Microstructure characterization
UR - http://www.scopus.com/inward/record.url?scp=85084160389&partnerID=8YFLogxK
M3 - Conference contribution
T3 - ECCM 2018 - 18th European Conference on Composite Materials
SP - 1
EP - 6
BT - ECCM 2018 - 18th European Conference on Composite Materials
PB - Applied Mechanics Laboratory
T2 - 18th European Conference on Composite Materials, ECCM 2018
Y2 - 24 June 2018 through 28 June 2018
ER -