Biomimetic fibre-reinforced composites inspired by branched plant stems

Publikation: Beitrag in Buch/Konferenzbericht/Sammelband/GutachtenBeitrag in Buch/Sammelband/GutachtenBeigetragenBegutachtung

Beitragende

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

OriginalspracheEnglisch
TitelDesign and Nature V
Herausgeber (Verlag)WIT Press, Southampton
Seiten411-420
Seitenumfang10
Band138
ISBN (Print)978-1-84564-454-3
PublikationsstatusVeröffentlicht - 2010
Peer-Review-StatusJa

Publikationsreihe

ReiheWIT Transactions on Ecology and the Environment
ISSN1746-448X

Konferenz

TitelDesign and Nature 2010
Untertitel5th International Conference on Comparing Design in Nature with Science and Engineering
Veranstaltungsnummer
Dauer28 - 30 Juni 2010
Ort
StadtPisa
LandItalien

Externe IDs

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

Schlagworte

ASJC Scopus Sachgebiete

Schlagwörter

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