Kurumun Atıf Alan Makalesi
Atıf Alan Yayın
The effects of stacking sequence on drilling machinability of filament wound hybrid composite pipes: Part-1 mechanical characterization and drilling tests
Scopus
Toplam 136 atıf DOI
In the first part of this two-part comprehensive study, mechanical properties and machinability characteristic of filament wound hybrid composite pipes with various stacking sequences of glass and carbon fibers (Glass-Carbon-Glass (GCG), Carbon-Glass-Glass (CGG), and Glass-Glass-Carbon (GGC)) were investigated experimentally. In order to determine the mechanical properties of the pipes, hardness test (Shore D), ring tensile test (ASTM D2290), and burst test (ASTM D1599) were carried out. Machinability tests were performed at various feed rates (50, 150, 250 and 350 mm/min) and spindle speeds (796, 1592, 2388 and 3184 rpm) using with and without a back-up. The results showed that stacking of the carbon layer between two glass layers (GCG) presented better performance in terms of mechanical properties and machinability characteristic. The maximum ring tensile stress of GCG specimen is 27% and 19% higher than those of GGC and CGG specimens, respectively. On the other hand, the lowest thrust forces measured during the drilling of GCG specimen while the GGC represented highest values. In addition, the use of back-up led to an increase in thrust force. The highest increase was observed in GGC sample. In GGC sample, a change in a spindle speed increased thrust force by 18–35%, while a change in feed rate increased thrust force by 20–30%.
Atıf Kaynağı
Atıf Yapan Yayın
Effect of hybridization and stacking sequence on damage development in AWJ machining of Al/FRP/Al FML composites
Scopus
Havuzumuzda 20 atıf almış
In this study, 5 different Al2024/FRP/Al2024 metal stacked composites were produced and their machinability by abrasive water jet machining (AWJM) method was investigated. Synergistic interaction of these materials offers new and improved properties, but machinability remains an area of research due to widely varying mechanical properties. The effects of different stacking and traverse speed on hole quality in cutting with AWJM were determined. The hole diameter deviation (HDD) ratio, kerf, delamination, hole circularity, and surface morphology were analyzed. Result of the current study showed that the increase in traverse speed caused an increase in the HDD ratio, in the visibility of the cutting starting point, in the deviation of circularity, and in the bore-hole damage formation. In all stacks with CFRP, an average deviation of 5 % at the hole entrance and 4 % at the hole exit occurred at a traverse speed of 1000 mm/min. At 400 and 600 mm/min traverse speeds, an average of 2.8 % deviation occurred at the hole entrance and an average of 2.13 % at the hole exit. This proves that the traverse speed has a significant effect on the hole diameter. In addition, as the traverse speed decreased, it was noticed that the layers separated from each other, causing delamination, and therefore the thickness of the FML increased. Different defects were observed to occur in FRP structures used in FML with SEM analysis. Intralayer defects were more dominant in GFRP laminate, whereas interlayer defects were found to form in CFRP laminate.
Atıf Yapan Makale Bilgileri
Kurumlar (5)
Iskenderun Technical University
Iskenderun, Turkey
Manufacturing-Research and Development
Eskisehir, Turkey
Necmettin Erbakan Üniversitesi
Meram, Turkey
Recep Tayyip Erdogan University
Rize, Turkey
Selçuk Üniversitesi
Selçuklu, Turkey