ABSTRACT

In contrast to other 'mixed materials' such as alloys, or particulate composites such as concrete, the properties of fibre composites are controlled not just by the relative proportions of the constituent materials but also by the diameter, length, orientation and packing of the fibres within the matrix. To properly discuss fibre architecture, it is necessary to introduce some standard terminology. Much of this is common to both frp and frc, but where necessary the distinction is made clear. The unit reinforcement element introduced during manufacture into both frc and frp composites for construction is generally not a simple fibre but some grouping or bundle of individual filaments with diameters of <0.1 mm. Two key parameters define the reinforcement layout: the length of the fibres and the orientation of the fibres. This chapter discusses these parameters in the context of a single laminate or an isotropic composite.