Modelling the effect of gaps and overlaps in automated fibre placement (AFP)-manufactured laminates
In automated fibre placement (AFP) process, gaps and overlaps parallel to the fibre direction can be introduced between the adjoining tapes. These gaps and overlaps can cause a reduction in strength compared with pristine conditions. Finite element modelling is an effective way to understand how the...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2015-03-01
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| Series: | Science and Engineering of Composite Materials |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/secm-2013-0322 |
| _version_ | 1818609292814581760 |
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| author | Li Xiangqian Hallett Stephen R. Wisnom Michael R. |
| author_facet | Li Xiangqian Hallett Stephen R. Wisnom Michael R. |
| author_sort | Li Xiangqian |
| collection | DOAJ |
| description | In automated fibre placement (AFP) process, gaps and overlaps parallel to the fibre direction can be introduced between the adjoining tapes. These gaps and overlaps can cause a reduction in strength compared with pristine conditions. Finite element modelling is an effective way to understand how the size and distribution of such gaps and overlaps influences the strength and failure development. Many modelling work showed that out-of-plane waviness and ply thickness variations caused by gaps and overlaps play an important role in inducing the strength knock-down; however, there has been a lack of effective way to explicitly model the ply waviness, which constrained the relevant research. In this work, 3D meshing tools were developed to automatically generate ply-by-ply models with gaps and overlaps. Intra-ply and inter-ply cohesive elements are also automatically inserted in the model to capture the influence of splitting and delamination. Out-of-plane waviness and ply thickness variations caused by gaps and overlaps are automatically modelled. Models with various sizes and distribution of gaps and overlaps were built to predict the reduction of strength as a function of the magnitude and type of the defects. Results of gap and overlap models will be used to guide future experimental characterization of simulated AFP process defects, manufactured by hand layup from pre-preg tape. |
| first_indexed | 2024-12-16T14:56:14Z |
| format | Article |
| id | doaj.art-654159aaa3234a5087f17a7300a814bf |
| institution | Directory Open Access Journal |
| issn | 0792-1233 2191-0359 |
| language | English |
| last_indexed | 2024-12-16T14:56:14Z |
| publishDate | 2015-03-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Science and Engineering of Composite Materials |
| spelling | doaj.art-654159aaa3234a5087f17a7300a814bf2022-12-21T22:27:26ZengDe GruyterScience and Engineering of Composite Materials0792-12332191-03592015-03-0122211512910.1515/secm-2013-0322Modelling the effect of gaps and overlaps in automated fibre placement (AFP)-manufactured laminatesLi Xiangqian0Hallett Stephen R.1Wisnom Michael R.2Advanced Composites Centre for Innovation and Science, University of Bristol, Queens Building, University Walk, Bristol BS8 1TR, UKAdvanced Composites Centre for Innovation and Science, University of Bristol, Queens Building, University Walk, Bristol BS8 1TR, UKAdvanced Composites Centre for Innovation and Science, University of Bristol, Queens Building, University Walk, Bristol BS8 1TR, UKIn automated fibre placement (AFP) process, gaps and overlaps parallel to the fibre direction can be introduced between the adjoining tapes. These gaps and overlaps can cause a reduction in strength compared with pristine conditions. Finite element modelling is an effective way to understand how the size and distribution of such gaps and overlaps influences the strength and failure development. Many modelling work showed that out-of-plane waviness and ply thickness variations caused by gaps and overlaps play an important role in inducing the strength knock-down; however, there has been a lack of effective way to explicitly model the ply waviness, which constrained the relevant research. In this work, 3D meshing tools were developed to automatically generate ply-by-ply models with gaps and overlaps. Intra-ply and inter-ply cohesive elements are also automatically inserted in the model to capture the influence of splitting and delamination. Out-of-plane waviness and ply thickness variations caused by gaps and overlaps are automatically modelled. Models with various sizes and distribution of gaps and overlaps were built to predict the reduction of strength as a function of the magnitude and type of the defects. Results of gap and overlap models will be used to guide future experimental characterization of simulated AFP process defects, manufactured by hand layup from pre-preg tape.https://doi.org/10.1515/secm-2013-0322automated fibre placementdefectsfailuregapsoverlaps |
| spellingShingle | Li Xiangqian Hallett Stephen R. Wisnom Michael R. Modelling the effect of gaps and overlaps in automated fibre placement (AFP)-manufactured laminates Science and Engineering of Composite Materials automated fibre placement defects failure gaps overlaps |
| title | Modelling the effect of gaps and overlaps in automated fibre placement (AFP)-manufactured laminates |
| title_full | Modelling the effect of gaps and overlaps in automated fibre placement (AFP)-manufactured laminates |
| title_fullStr | Modelling the effect of gaps and overlaps in automated fibre placement (AFP)-manufactured laminates |
| title_full_unstemmed | Modelling the effect of gaps and overlaps in automated fibre placement (AFP)-manufactured laminates |
| title_short | Modelling the effect of gaps and overlaps in automated fibre placement (AFP)-manufactured laminates |
| title_sort | modelling the effect of gaps and overlaps in automated fibre placement afp manufactured laminates |
| topic | automated fibre placement defects failure gaps overlaps |
| url | https://doi.org/10.1515/secm-2013-0322 |
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