Micro-Tailoring Multi-Functional Materials for Aerospace Objectives
Abstract
This research demonstrates that both fibers and spherical inclusions in composite can be manipulated by electric or magnetic fields. This capability is applied to micro-tailor microstructure of polymeric composites to meet aerospace design objectives. Composition of graphite, glass, ceramic and metallic constituents dispersed in epoxy are considered. The ultimate goal is to achieve multifunctional performance which is superior to that of conventional composites. This includes controlling local orthotropy, as well as developing self-sensing and health monitoring capabilities. The developed computational optimization procedure demonstrates that stress concentrations in perforated composites can be significantly reduced by appropriately orientating the fibers in the neighborhood of the discontinuities. Considerable progress has also been made towards implementing these features when manufacturing real components. Novel capacitive sensors have been developed which can measure a component's strains without being bonded to the component. These sensors can be orientated arbitrarily and still provide both the magnitude and directions of the principal strains and stresses.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 2005
- Accession Number
- ADA444272
Entities
People
- Robert Rowlands
- Yuri M. Shkel
Organizations
- University of Wisconsin–Madison