Development of a process chain for the realization of multilayer weft knitted fabrics showing complex 2D/3D geometries for composite applications

Research output: Contribution to journalResearch articleContributedpeer-review

Abstract

The use of thermoplastic components with a complex three-dimensional (3D) shape, manufactured efficiently with thermo-presses, has been increased steadily. Flat knitting technology using reinforcing hybrid yarns in the horizontal and vertical direction is especially suited for producing near-net-shape or fully-fashion multilayer weft knitted fabrics – MLGs (abbreviated from the German word Mehrlagengestrick, meaning multilayer weft knitted fabric). The other advantages of manufacturing such MLGs, using flat knitting technology, are reduced waste and desired reinforcing fibre alignment to obtain improved mechanical properties for high-performance applications. Before knitting 3D shaped MLGs, it is necessary to transfer the 3D component geometry into a suitable two-dimensional (2D) pattern cut by implementing parting lines. The use of computer-aided design (CAD) programs enables an effective development of complex components preforms. The generated 2D pattern cuts are analyzed with the consideration of net-shape preforming processes on V-bed flat knitting machines. The development of a segmented take-down system for effective production of 3D MLG preforms is also discussed.

Details

Original languageEnglish
Pages (from-to)1195-1210
Number of pages16
JournalTextile Reseach Journal
Volume82
Issue number12
Publication statusPublished - Jul 2012
Peer-reviewedYes

External IDs

researchoutputwizard legacy.publication#40944
Scopus 84860162233
ORCID /0000-0003-0262-8670/work/142245896

Keywords

Keywords

  • 3D preforms, composites, glass polypropylene hybrid yarn, Knitting, multilayer weft knitted fabrics, near-net-shaped preforms, 2D