Effect of interface structure on mechanical properties of advanced composite materials.

Yong Gan

doi:10.3390/ijms10125115

Abstract

This paper deals with the effect of interface structures on the mechanical properties of fiber reinforced composite materials. First, the background of research, development and applications on hybrid composite materials is introduced. Second, metal/polymer composite bonded structures are discussed. Then, the rationale is given for nanostructuring the interface in composite materials and structures by introducing nanoscale features such as nanopores and nanofibers. The effects of modifying matrices and nano-architecturing interfaces on the mechanical properties of nanocomposite materials are examined. A nonlinear damage model for characterizing the deformation behavior of polymeric nanocomposites is presented and the application of this model to carbon nanotube-reinforced and reactive graphite nanotube-reinforced epoxy composite materials is shown.

Highlights

Advanced composite materials have the unique combination of outstanding mechanical properties of matrices and reinforcements
Adhesively bonded composite/metal laminate structures are held at elevated temperatures over 120 ◦ C, very high residual stresses could build up because of the difference in coefficients of thermal expansion (CTE) for different materials
The adhesive bonding process requires curing at elevated temperatures, which leads to thermal residual stresses due to the thermal expansion mismatch between composite materials and metals

Summary

Introduction

Advanced composite materials have the unique combination of outstanding mechanical properties of matrices and reinforcements. The effect of interface structures on the mechanical properties of fiber reinforced composite materials is discussed. Adhesively bonded composite/metal laminate structures are held at elevated temperatures over 120 ◦ C, very high residual stresses could build up because of the difference in coefficients of thermal expansion (CTE) for different materials.

Results

Conclusion