Akademik Veri Yönetim Sistemi
POLYMER COMPOSITES, cilt.36, sa.11, ss.1958-1966, 2015 (SCI-Expanded)
In current study, the tested material is a glass fiber reinforced polyester matrix composite with one stacking sequence namely [0/90](s). First of all, the solid particle erosion behavior of composite samples was investigated under various impingement angles (15 degrees, 30 degrees, 45 degrees, 60 degrees, 75 degrees, and 90 degrees, respectively). Eroded composite samples were examined by non-contact optical profilometer and 3D surface roughness maps were obtained. From optical profilometer results, it was clearly shown that values of erosion crater hole volumes were well suited with erosion rate values versus impingement angles. Maximum and minimum erosion crater hole volumes observed at 60 degrees and 15 degrees impingement angles due to semi-ductile characteristic of the target material, respectively. After erosion tests, the scratch behavior of composite samples was examined. The results showed that the coefficient of friction was decreased by the increase in impingement angles of 45 degrees and 60 degrees. The maximum scratch hardness value was determined at 60 degrees impingement angle. Scratch damage morphologies were determined by using optical microscope and scanning electron microscope. It was observed that low (15 degrees and 30 degrees) and high (75 degrees and 90 degrees) impingement angles result in remarkably severe surface deformation on the samples. (c) 2014 Society of Plastics Engineer