dc.identifier.uri |
https://www.repo.uni-hannover.de/handle/123456789/14701 |
|
dc.contributor.author |
Körbelin, Johann
|
|
dc.contributor.author |
Goralski, Philip
|
|
dc.contributor.author |
Kötter, Benedikt
|
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dc.contributor.author |
Bittner, Florian
|
|
dc.contributor.author |
Endres, Hans-Josef
|
|
dc.contributor.author |
Fiedler, Bodo
|
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dc.date.accessioned |
2023-08-29T05:31:53Z |
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dc.date.available |
2023-08-29T05:31:53Z |
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dc.date.issued |
2021 |
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dc.identifier.citation |
Körbelin, J.; Goralski, P.; Kötter, B.; Bittner, F.; Endres, H.-J. et al.: Damage tolerance and notch sensitivity of bio-inspired thin-ply Bouligand structures. In: Composites Part C: Open Access 5 (2021), 100146. DOI: https://doi.org/10.1016/j.jcomc.2021.100146 |
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dc.description.abstract |
Different bio-inspired Bouligand thin-ply Carbon-Fibre-Reinforced Plastic (CFRP) laminates with a pitch angle as low as 2.07∘ are realised, which is the smallest pitch angle realised in literature. The angle is therefore close angles found in biological microstructures. Low-Velocity Impact (LVI) and residual compressive strength tests determined the damage tolerance of the structures. Investigated were two different interlaminar fracture toughnesses and two different metal-Bouligand-CFRP-layups. The low pitch angle results in significantly higher residual strengths than 45∘ quasi-isotropic (QI) layups, despite the significantly lower proportion of 0∘ fibres. Higher fracture toughness and hybridisation with steel layers lead to reduced matrix damage without increasing residual compressive strength. In-plane plane tension properties are determined with a pitch angle of 2.59∘. The results reveal, that the unnotched tensile strength is significantly lower. However, only helicoidal, sub-critical matrix cracking and no delaminations occur before final failure. The sub-critical matrix cracking leads to almost no notch sensitivity and a similar open-hole-tensile strength to 45∘-QI layups despite the low number of 0∘-fibres. |
eng |
dc.language.iso |
eng |
|
dc.publisher |
Amsterdam : Elsevier |
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dc.relation.ispartofseries |
Composites Part C: Open Access 5 (2021) |
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dc.rights |
CC BY 4.0 Unported |
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dc.rights.uri |
https://creativecommons.org/licenses/by/4.0 |
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dc.subject |
CT analysis |
eng |
dc.subject |
Failure |
eng |
dc.subject |
Hybrid |
eng |
dc.subject |
Layered structures |
eng |
dc.subject |
Microstructures |
eng |
dc.subject |
Stress concentrations |
eng |
dc.subject.ddc |
620 | Ingenieurwissenschaften und Maschinenbau
|
|
dc.title |
Damage tolerance and notch sensitivity of bio-inspired thin-ply Bouligand structures |
eng |
dc.type |
Article |
|
dc.type |
Text |
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dc.relation.essn |
2666-6820 |
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dc.relation.doi |
https://doi.org/10.1016/j.jcomc.2021.100146 |
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dc.bibliographicCitation.volume |
5 |
|
dc.bibliographicCitation.firstPage |
100146 |
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dc.description.version |
publishedVersion |
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tib.accessRights |
frei zug�nglich |
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