Over the last forty years I have been lucky enough to have experienced a unique career researching and developing composite materials, in both industry and academia, during a time of unprecedented expansion in the global composites business. Over that time, I have been involved in areas as diverse as the development of new and novel fibre and composite products through to fundamental materials research. My research efforts have been focussed in three main areas; the fibre-matrix interface region, fibre reinforcements and in particular glass fibres, and the structure-(re)processing-performance relationships of reinforced thermoplastics. The published output of that work is collected together in this series of volumes.

The 19 papers collected in this volume summarise my twenty-five year journey through the research and development of glass fibre reinforced polyamide (GF-PA). The first phase of the journey was focused on the structure-processing-performance relationships of GF-PA. This includes the influence of fibre diameter, fibre length, fibre concentration, the glass fibre inline-offline chopping issue, and composite hydrolysis resistance. Most of the papers in this volume address one or more of these structure-performance challenges in GF-PA. There are also a number that address the interface, glass fibre sizing development and fibre-matrix adhesion and its relationship with environmental humidity.