Análise fractográfica do Polimetilmetacrilato (PMMA)

Abstract

The optical fractography is an efficient and low cost for the examination of fractured surfaces method, resulting in a typical and representative determination of the fracture surface obtained quickly and accurately. The polymethylmethacrylate (PMMA), called of acrylic, thermoplastic semicrystalline polymer with moderate mechanical strength, light weight, good conformability, transparent and colorless. Because these properties, is considered one of the most modern polymers being used in many engineering applications. In some of these applications, the knowledge of their behavior under mechanical effort is required. This work aims to characterize the PMMA fractures in mechanical tests of uniaxial tension. The observations of fractures of the test samples were mechanically performed with the aid of light microscopy. Comparison of the fracture surfaces, obtained by mechanical test, showed two aspects of fracture.