Biomimetic fibre-reinforced composites inspired by branched plant stems

Research output: Contribution to book/Conference proceedings/Anthology/ReportChapter in book/Anthology/ReportContributedpeer-review

Contributors

Abstract

The manufacturing of nodal elements and/or ramifications with an optimised force flow is one of the major challenges in many areas of fibre-reinforced composite technology. Examples are hubs of wind-power plants, branching points of framework constructions in the building industry, aerospace, ramified vein prostheses in medical technology and the connecting nodes of axel carriers. Addressing this problem requires the adaptation of innovative manufacturing techniques and the implementation of novel mechanically optimised* **fibre-reinforced structures. Consequently, the potential of hierarchically structured plant ramifications as concept generators for innovative, biomimetic branched fibre-reinforced composites was assessed by morphological and biomechanical analyses. Promising biological models were found in monocotyledons with anomalous secondary growth, i.e. Dracaena and Freycinetia, as well as in columnar cacti, such as Oreocereus and Corryocactus. These plants possess ramifications with a pronounced fibre matrix structure and a special hierarchical stem organization, which markedly differ from that of other woody plants by consisting of isolated fibres and/or wood strands running in a partially lignified parenchymatous matrix. The angles of the Y- and T-shaped ramifications in plants resemble those of the branched technical structures. Our preliminary investigations confirm that the ramifications possess mechanical properties that are promising for technical applications, such as a benign fracture behaviour, a good oscillation damping caused by high energy dissipation, and a high potential for lightweight construction. The results demonstrate the high potential for a successful technical transfer and will lead to the development of concepts for producing demonstrators in the lab-bench and pilot plant scales that already incorporate solutions inspired by nature.

Details

Original languageEnglish
Title of host publicationDesign and Nature V
PublisherWIT Press, Southampton
Pages411-420
Number of pages10
Volume138
ISBN (print)978-1-84564-454-3
Publication statusPublished - 2010
Peer-reviewedYes

Publication series

SeriesWIT Transactions on Ecology and the Environment
ISSN1746-448X

Conference

TitleDesign and Nature 2010
Subtitle5th International Conference on Comparing Design in Nature with Science and Engineering
Conference number
Duration28 - 30 June 2010
Location
CityPisa
CountryItaly

External IDs

ORCID /0000-0003-1370-064X/work/142243667

Keywords

ASJC Scopus subject areas

Keywords

  • branched fibre-reinforced composites, columnar cacti, lightweight, monocotyledons, Y- and T-shaped ramifications