INFLUENCE OF AUTOMATED FIBRE PLACEMENT PROCESSING PARAMETERS ON THE CONSOLIDATION OF OUT-OF-AUTOCLAVE PREPREGS

Axel Wowogno; Iryna Tretiak; Stephen R. Hallett; James Kratz

doi:10.5075/epfl-298799_978-2-9701614-0-0

INFLUENCE OF AUTOMATED FIBRE PLACEMENT PROCESSING PARAMETERS ON THE CONSOLIDATION OF OUT-OF-AUTOCLAVE PREPREGS

Axel Wowogno^*, Iryna Tretiak, Stephen R. Hallett, James Kratz

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

Abstract

Composite materials are widely used in the aerospace industry due to high performance needs. This study investigates the thickness change of cross-ply samples (2mm thickness and 30x30mm2 compaction area), using a representative out-of-autoclave (OOA) carbon fibre reinforced epoxy prepreg system. Two experimental programs were used to examine the consolidation behaviour of the material by varying Automated Fibre Placement (AFP) process parameters, such as pressure magnitude (from 0.05MPa to 0.25MPa), pressure application time (from 1s to 20 min) and temperature (from 30°C to 210°C). Upon analysis of the thinning and widening of the samples, a minimum pressure value of 0.1 MPa was defined to reach compaction and optimal parameters for dimension stability were proposed (150°C for 2.5s). Voids were analysed and showed that higher temperature and longer time exposure led to smaller and fewer voids, with 0.45% porosity being achieved at 210°C for 10s. This shows that hot debulking is a promising route for thickness control during prepreg deposition, but that further analysis is needed to properly replicate specific processing conditions such as fast deposition speeds.

Original language	English
Title of host publication	Proceedings of the 20th European Conference on Composite Materials
Subtitle of host publication	Manufacturing
Editors	Anastasios P. Vassilopoulos, Veronique Michaud
Publisher	Composite Construction Laboratory (CCLab), Ecole Polytechnique Federale de Lausanne (EPFL)
Pages	145-152
Number of pages	8
ISBN (Electronic)	9782970161400
DOIs	https://doi.org/10.5075/epfl-298799_978-2-9701614-0-0
Publication status	Published - 30 Jun 2022
Event	20th European Conference on Composite Materials: Composites Meet Sustainability, ECCM 2022 - Lausanne, Switzerland Duration: 26 Jun 2022 → 30 Jun 2022

Publication series

Name	Proceedings of the European Conference on Composite Materials

Conference

Conference	20th European Conference on Composite Materials: Composites Meet Sustainability, ECCM 2022
Country/Territory	Switzerland
City	Lausanne
Period	26/06/22 → 30/06/22

Bibliographical note

Publisher Copyright:
© 2022 Wowogno et al.

Keywords

Advanced Manufacturing
Carbon Fibre / Epoxy Prepreg
Compaction
Thickness control

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10.5075/epfl-298799_978-2-9701614-0-0Licence: CC BY-NC

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Wowogno, A., Tretiak, I., Hallett, S. R., & Kratz, J. (2022). INFLUENCE OF AUTOMATED FIBRE PLACEMENT PROCESSING PARAMETERS ON THE CONSOLIDATION OF OUT-OF-AUTOCLAVE PREPREGS. In A. P. Vassilopoulos, & V. Michaud (Eds.), Proceedings of the 20th European Conference on Composite Materials: Manufacturing (pp. 145-152). (Proceedings of the European Conference on Composite Materials). Composite Construction Laboratory (CCLab), Ecole Polytechnique Federale de Lausanne (EPFL). https://doi.org/10.5075/epfl-298799_978-2-9701614-0-0

Wowogno, Axel ; Tretiak, Iryna ; Hallett, Stephen R. et al. / INFLUENCE OF AUTOMATED FIBRE PLACEMENT PROCESSING PARAMETERS ON THE CONSOLIDATION OF OUT-OF-AUTOCLAVE PREPREGS. Proceedings of the 20th European Conference on Composite Materials: Manufacturing. editor / Anastasios P. Vassilopoulos ; Veronique Michaud. Composite Construction Laboratory (CCLab), Ecole Polytechnique Federale de Lausanne (EPFL), 2022. pp. 145-152 (Proceedings of the European Conference on Composite Materials).

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title = "INFLUENCE OF AUTOMATED FIBRE PLACEMENT PROCESSING PARAMETERS ON THE CONSOLIDATION OF OUT-OF-AUTOCLAVE PREPREGS",

abstract = "Composite materials are widely used in the aerospace industry due to high performance needs. This study investigates the thickness change of cross-ply samples (2mm thickness and 30x30mm2 compaction area), using a representative out-of-autoclave (OOA) carbon fibre reinforced epoxy prepreg system. Two experimental programs were used to examine the consolidation behaviour of the material by varying Automated Fibre Placement (AFP) process parameters, such as pressure magnitude (from 0.05MPa to 0.25MPa), pressure application time (from 1s to 20 min) and temperature (from 30°C to 210°C). Upon analysis of the thinning and widening of the samples, a minimum pressure value of 0.1 MPa was defined to reach compaction and optimal parameters for dimension stability were proposed (150°C for 2.5s). Voids were analysed and showed that higher temperature and longer time exposure led to smaller and fewer voids, with 0.45\% porosity being achieved at 210°C for 10s. This shows that hot debulking is a promising route for thickness control during prepreg deposition, but that further analysis is needed to properly replicate specific processing conditions such as fast deposition speeds.",

keywords = "Advanced Manufacturing, Carbon Fibre / Epoxy Prepreg, Compaction, Thickness control",

author = "Axel Wowogno and Iryna Tretiak and Hallett, \{Stephen R.\} and James Kratz",

note = "Publisher Copyright: {\textcopyright} 2022 Wowogno et al.; 20th European Conference on Composite Materials: Composites Meet Sustainability, ECCM 2022 ; Conference date: 26-06-2022 Through 30-06-2022",

year = "2022",

month = jun,

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doi = "10.5075/epfl-298799\_978-2-9701614-0-0",

language = "English",

series = "Proceedings of the European Conference on Composite Materials",

publisher = "Composite Construction Laboratory (CCLab), Ecole Polytechnique Federale de Lausanne (EPFL)",

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Wowogno, A, Tretiak, I , Hallett, SR & Kratz, J 2022, INFLUENCE OF AUTOMATED FIBRE PLACEMENT PROCESSING PARAMETERS ON THE CONSOLIDATION OF OUT-OF-AUTOCLAVE PREPREGS. in AP Vassilopoulos & V Michaud (eds), Proceedings of the 20th European Conference on Composite Materials: Manufacturing. Proceedings of the European Conference on Composite Materials, Composite Construction Laboratory (CCLab), Ecole Polytechnique Federale de Lausanne (EPFL), pp. 145-152, 20th European Conference on Composite Materials: Composites Meet Sustainability, ECCM 2022, Lausanne, Switzerland, 26/06/22. https://doi.org/10.5075/epfl-298799_978-2-9701614-0-0

INFLUENCE OF AUTOMATED FIBRE PLACEMENT PROCESSING PARAMETERS ON THE CONSOLIDATION OF OUT-OF-AUTOCLAVE PREPREGS. / Wowogno, Axel; Tretiak, Iryna ; Hallett, Stephen R. et al.
Proceedings of the 20th European Conference on Composite Materials: Manufacturing. ed. / Anastasios P. Vassilopoulos; Veronique Michaud. Composite Construction Laboratory (CCLab), Ecole Polytechnique Federale de Lausanne (EPFL), 2022. p. 145-152 (Proceedings of the European Conference on Composite Materials).

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

TY - GEN

T1 - INFLUENCE OF AUTOMATED FIBRE PLACEMENT PROCESSING PARAMETERS ON THE CONSOLIDATION OF OUT-OF-AUTOCLAVE PREPREGS

AU - Wowogno, Axel

AU - Tretiak, Iryna

AU - Hallett, Stephen R.

AU - Kratz, James

PY - 2022/6/30

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N2 - Composite materials are widely used in the aerospace industry due to high performance needs. This study investigates the thickness change of cross-ply samples (2mm thickness and 30x30mm2 compaction area), using a representative out-of-autoclave (OOA) carbon fibre reinforced epoxy prepreg system. Two experimental programs were used to examine the consolidation behaviour of the material by varying Automated Fibre Placement (AFP) process parameters, such as pressure magnitude (from 0.05MPa to 0.25MPa), pressure application time (from 1s to 20 min) and temperature (from 30°C to 210°C). Upon analysis of the thinning and widening of the samples, a minimum pressure value of 0.1 MPa was defined to reach compaction and optimal parameters for dimension stability were proposed (150°C for 2.5s). Voids were analysed and showed that higher temperature and longer time exposure led to smaller and fewer voids, with 0.45% porosity being achieved at 210°C for 10s. This shows that hot debulking is a promising route for thickness control during prepreg deposition, but that further analysis is needed to properly replicate specific processing conditions such as fast deposition speeds.

AB - Composite materials are widely used in the aerospace industry due to high performance needs. This study investigates the thickness change of cross-ply samples (2mm thickness and 30x30mm2 compaction area), using a representative out-of-autoclave (OOA) carbon fibre reinforced epoxy prepreg system. Two experimental programs were used to examine the consolidation behaviour of the material by varying Automated Fibre Placement (AFP) process parameters, such as pressure magnitude (from 0.05MPa to 0.25MPa), pressure application time (from 1s to 20 min) and temperature (from 30°C to 210°C). Upon analysis of the thinning and widening of the samples, a minimum pressure value of 0.1 MPa was defined to reach compaction and optimal parameters for dimension stability were proposed (150°C for 2.5s). Voids were analysed and showed that higher temperature and longer time exposure led to smaller and fewer voids, with 0.45% porosity being achieved at 210°C for 10s. This shows that hot debulking is a promising route for thickness control during prepreg deposition, but that further analysis is needed to properly replicate specific processing conditions such as fast deposition speeds.

KW - Advanced Manufacturing

KW - Carbon Fibre / Epoxy Prepreg

KW - Compaction

KW - Thickness control

U2 - 10.5075/epfl-298799_978-2-9701614-0-0

DO - 10.5075/epfl-298799_978-2-9701614-0-0

M3 - Conference Contribution (Conference Proceeding)

AN - SCOPUS:85149412848

T3 - Proceedings of the European Conference on Composite Materials

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BT - Proceedings of the 20th European Conference on Composite Materials

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Wowogno A, Tretiak I , Hallett SR , Kratz J. INFLUENCE OF AUTOMATED FIBRE PLACEMENT PROCESSING PARAMETERS ON THE CONSOLIDATION OF OUT-OF-AUTOCLAVE PREPREGS. In Vassilopoulos AP, Michaud V, editors, Proceedings of the 20th European Conference on Composite Materials: Manufacturing. Composite Construction Laboratory (CCLab), Ecole Polytechnique Federale de Lausanne (EPFL). 2022. p. 145-152. (Proceedings of the European Conference on Composite Materials). doi: 10.5075/epfl-298799_978-2-9701614-0-0

INFLUENCE OF AUTOMATED FIBRE PLACEMENT PROCESSING PARAMETERS ON THE CONSOLIDATION OF OUT-OF-AUTOCLAVE PREPREGS

Abstract

Publication series

Conference

Bibliographical note

Keywords

Access to Document

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