Publications by authors named "Sung-Rok Ha"

Residual strength tests were performed on unmodified and silane-modified clay/epoxy nanocomposites by applying various cyclic stresses. The residual strength of silane-modified samples proved to be greater than that of unmodified samples, irrespective of the cyclic stress level. For clay/epoxy nanocomposites, cyclic stress proved to have little effect on residual strength.

View Article and Find Full Text PDF

Numerous studies have investigated the material properties of clay/polymer nanocomposites, such as their fracture toughness, elastic modulus, and hardness. However, only a few researchers have studied the tribological properties of clay/polymer nanocomposites. This study investigated the effect of the montmorillonite (MMT) concentration on the tribological behavior of MMT/epoxy nanocomposites.

View Article and Find Full Text PDF

It is known that the mechanical properties of clay-reinforced nanocomposites are significantly affected by the dispersion of clay particles in the matrix. In this study, the effect of surface-treatment of Montmorillonite (MMT) on the fracture behavior of MMT/epoxy nanocomposite was investigated. For this purpose, fracture tests were performed using samples with three different clay concentration level.

View Article and Find Full Text PDF