Accession Number:

ADA606966

Title:

Additive Layer Manufacturing of Biologically Inspired Short Fibre Reinforced Composites

Descriptive Note:

Final rept. 1 Jan 2013-31 Mar 2014

Corporate Author:

BRISTOL UNIV (UNITED KINGDOM)

Report Date:

2014-03-01

Pagination or Media Count:

89.0

Abstract:

This project provided fundamental understanding towards novel additive layer manufacturing approaches for highly-ordered, short-fiber architectures. The fabrication challenge is a critical hurdle to the realization of complex, multi-scale architectures inspired by nature for improving the mechanical and functional properties of engineered materials. The study was advanced on two fronts 1 development of new hierarchical architecture based on ZnO nanorods grown on glass fibers and coated with tetraethyl orthosilicate TEOS to promote self-assembly and 2 exploitation of ultrasonic manipulation for controlling orientation and distribution of reinforcing short fibers. The ZnOTEOS nanorods were shown to preserve mechanical properties of the base fibers while also displaying some healing capability for defects. For the ultrasonic manipulation, both micro-scale and nano-scale reinforcements were studied using a new prototype assembly system developed for the project. Enhancement of stiffness and strength properties in aligned directions was observed despite low volume fraction of reinforcement.

Subject Categories:

  • Laminates and Composite Materials
  • Textiles

Distribution Statement:

APPROVED FOR PUBLIC RELEASE