Characterizing In-Plane Geometrical Variability in Textile Ceramic Composites

Characterizing Weave Geometry in Textile Ceramic Composites Using Digital Image Correlation

Michael N. Rossol, John H. Shaw, Hrishikesh Bale, Robert O. Ritchie, David B. Marshall,k and Frank W. Zok Materials Department, University of California, Santa Barbara, California 93106 Department of Materials Science and Engineering, University of California, Berkeley, California 94720 Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 kTeledyne Scien...

Friction in Textile Thermoplastic Composites Forming

A previously developed mesoscopic friction model for glass/PP textile composite laminates during forming is evaluated for glass and carbon/PPS laminates, at higher temperatures and lower viscosities than before. Experiments were performed for tool/ply and ply/ply configurations in a new friction test set-up. The experimental results indicate that this contact is indeed in the hydrodynamic regim...

Models for Textile Composites Forming

INTRODUCTION Drape of dry fabrics or prepregs was recognised as an important feature in composites forming operations from the start. In the 1950s the first mathematical models were developed based on purely kinematic arguments. The assumption of zero fibre strains and trellis deformations led to the socalled fishnet approach. Typically, these methods require certain arbitrary constraints to re...

Dielectric Mixing Laws in Ceramic/polymer Composites

Dielectric mixing laws were examined for the composites consisting of ferroelectric ceramics particles dispersed in the polymer matrix. The rate of increase in the dielectric permittivity with increasing ceramics content was shown to be consistent with classical Bruggeman predictions. The use of semiconductive polymer matrix generates dielectric as well as conductive relaxations associated with...

Bio-inspired Ceramic/carbon Composites