Application Of Incremental Damage Theory ToGlass Particle Reinforced Nylon 66 Composites

TLDR: In this paper, a tensile test on seven kinds of glass particle reinforced nylon 66 composites in which a particle volume fraction is varied in 0, 10, 20% and 30%, and glass particles treated or untreated with silan-coupling are used.

Abstract: In this paper, tensile tests are carried out on seven kinds of glass particle reinforced nylon 66 composites in which a particle volume fraction is varied in 0%, 10%, 20% and 30%, and glass particles treated or untreated with silan-coupling are used. The stress-strain response of the composites depends on both the particle volume fraction and the treatment of interface between the particles and matrix. Young's modulus and Poisson's ratio are characterized by only the particle volume fraction, while tensile strength is described as a function of the particle volume fraction and interface treatment. With increasing particle volume fraction, the tensile strength increases first and then becomes constant in the interface-treated composites, and decreases in the interface-untreated conventional composites. Numerical analysis is also carried out on stress-strain response and damage behavior of the seven kinds of composites. The stress-strain relations of the interface treated composites are explained only by influence of particle volume fraction while those of the conventional composites are characterized by considering the particle volume fraction and interfacial debonding between the particles and matrix.