Akademik Veri Yönetim Sistemi
12th INTERNATIONAL CONFERENCE ON ENGINEERING & NATURAL SCIENCES December 24-25, 2021 / Bingol, Turkey , 24 - 25 Aralık 2021, ss.23-33
ABSTRACT Glass fiber reinforced polyamide (PA66) composites, which have high mechanical strength, stiffness and thermal stability, have a wide range of use in the automotive industry, machine elements and material handling technology due to their good toughness, suitable sliding friction properties. Solid particle erosion is especially important in places exposed to dusty environments in transportation technology, automotive and aerospace applications. Solid particle erosion is recognized as a serious problem in many engineering systems, as materials become damaged at a time below their service life. In this study, the erosive wear behavior of 35vol. % glass fiber reinforced polyamide (PA66 35GF), a common engineering plastic, was investigated depending on the erodent particle size. Erosive wear tests were applied to PA66 35GF samples using two different size of Garnet particles (120mesh and 60 mesh) at 2 Bar pressure, for different impingement angles (15°, 30°, 45°, 60°, 75°, 90°). The effect of abrasive particle size on erosion wear behavior of PA66 35GF composites at different impingement angles was determined. PA66 35GF composites showed semi-ductile erosion behavior with maximum erosion rate in the 30˚-45˚ impingement angle for both erodent size. It has been observed that erodent particles with smaller size (G 120) cause further erosion wear on the target material surface. The surface topography was determined by scanning the eroded material surfaces at 45° and 90° impingement angles with a non-contact laser profilometer, and arithmetical mean roughness value (Ra), total height of the roughness profile (Rt) were calculated. Ra and Rt roughness values were high at 45° impingement angle where maximum erosion occurred and roughness decreased significantly at 90° impingement angle for two erodent size. In addition, it was determined that the erodent particle size significantly affects the surface roughness and the use of large size erodent (G 60) increases the surface roughness values for 45° and 90° impingement angles.
Keywords: Solid particle erosion, glass fiber reinforced PA66, particle impingement angle,
erodent size