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Full-Text Articles in Engineering
Evaluation Of The Surface Defects And Dimensional Tolerances In Multi-Hole Drilling Of Aa5083, Aa6061, And Aa2024, Muhammad Aamir, Majid Tolouei Rad, Khaled Giasin, Ana Vafadar, Ugur Koklu, William Keeble
Evaluation Of The Surface Defects And Dimensional Tolerances In Multi-Hole Drilling Of Aa5083, Aa6061, And Aa2024, Muhammad Aamir, Majid Tolouei Rad, Khaled Giasin, Ana Vafadar, Ugur Koklu, William Keeble
Research outputs 2014 to 2021
Drilling is one of the most performed machining operations for riveting and assembly operations in many industrial sectors. The accuracy of the drilled holes and their surface finish play a vital role in the longevity and performance of the machined components, which, in turn, increase productivity. Therefore, this study investigated the effect of the multi-spindle drilling process on dimensional hole tolerances, such as hole size, circularity, cylindricity, and perpendicularity. In addition, the surface defects formed in the holes were examined using scanning electron microscopy. Three aluminium alloys, AA2024, AA6061, and AA5083, which are commonly used in the aerospace, automotive, and …
The Effect Of Tin-, Ticn-, Tialn-, And Tisin Coated Tools On The Surface Defects And Geometric Tolerances Of Holes In Multi-Spindle Drilling Of Al2024 Alloy, Muhammad Aamir, Adrian Davis, William Keeble, Ugur Koklu, Khaled Giasin, Ana Vafadar, Majid Tolouei Rad
The Effect Of Tin-, Ticn-, Tialn-, And Tisin Coated Tools On The Surface Defects And Geometric Tolerances Of Holes In Multi-Spindle Drilling Of Al2024 Alloy, Muhammad Aamir, Adrian Davis, William Keeble, Ugur Koklu, Khaled Giasin, Ana Vafadar, Majid Tolouei Rad
Research outputs 2014 to 2021
The integrity of machined holes depends on many parameters, some of which are related to the cutting tool (geometry, coating, material). Other influential parameters are related to the machining process variables (spindle speed, feed rate, workpiece material), all of which can affect the quality of the hole and drilling induced damage on its surface. This study investigates the effect of uncoated tools and four types of tool coatings (TiN-, TiCN-, TiAlN-, and TiSiN) on the hole quality and its microstructure. The study analyzed several hole geometrical metrics, namely hole size, circularity, cylindricity, and perpendicularity of an Al2024 aluminum alloy using …
Simultaneous Machining Of Aerospace Structural Materials Using Poly-Drills, Muhammad Aamir
Simultaneous Machining Of Aerospace Structural Materials Using Poly-Drills, Muhammad Aamir
Theses: Doctorates and Masters
Despite the growth of composites and other lightweight materials, aluminium alloys remain an attractive choice for the aerospace industry due to their distinct manufacturing processes, good resistance to fatigue crack growth and superior damage tolerance. In the aerospace industry, the drilling process is widely used among all the machining processes as millions of holes are required to produce riveted and bolted joints in the assembly operation of the aircraft's structures. The major challenges which arise from the drilling of these alloys are characterized by the low hole quality, which might initiate cracks within the airframe structure and reducing their reliability. …