Akademik Veri Yönetim Sistemi
2nd International Canadian Scientific Research Congress, Toronto, Kanada, 24 - 25 Ekim 2024, ss.550-556
The scratching behavior of polymers has been the subject of intense research efforts in recent years. Determining how polymeric materials behave when scratched under various operating situations is crucial since scratches on their surfaces reduce mechanical performance. The objective of this work was to establish a relationship between the material structure and scratch behavior of the 35% Glass Fiber (GF) reinforced Polyamide 66 (PA66). Scratch tests were performed with Vickers and Rockwell abrasive indenters at different load (6.625, 13.25, 19.875 and 26.5 N) and velocity (1, 5, 10 and 15 mm/s) values. Following scratch tests conducted under various conditions, the scratch width, residual depth, and scratch hardness of each sample were ascertained. The scratch width and residual depth increased almost linearly with applied load and were marginally dependent on velocity. Together with the load, there was a modest increase in the scratch hardness values. Following the scratch tests using both kinds of indenters, SEM analyses were conducted to look at the impacts on the marks and examine the deformation mechanisms of the surfaces that had been scratched. The analyses visually supported the occurrence of phenomena such as fiber cracks, fiber breakage and fiber shrinkage, micro-cracks, and residues on scratched surfaces.