Abstract

Abstract Glass fiber reinforced plastics are widely used in a host of engineering applications. In these two component materials, the region around the boundary where the components meet is known as the ‘interphase’. The size of the interphase is typically of the order of few microns and understanding the mechanical properties of this microscopic region is central to understanding the mechanical behavior of the composite. Such a small region is amenable to nanomechanical investigation using nanoindentation techniques. For nano length scale investigation it is imperative to have a surface with a roughness of the order of 10s of nanometers. In this investigation techniques have been developed to obtain very low surface roughness in both monolithic polyester and glass fiber reinforced polyester composite samples using a combination of abrasion and etching.

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