Design analysis of thin walled aluminium 7075 aircraft parts

Mohd Zin, Mohamad Azuan (2014) Design analysis of thin walled aluminium 7075 aircraft parts. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

7000 series aluminum alloys are widely used because of its advantages of high strength but low density. It is widely used in the aircraft manufacturing industry which is becoming particularly important basic component of aluminum alloy 7075 (Al 7075) series. Al 7075 has been used at the aircraft rib for Boeing 737. The objective of this project is to investigate and identify the minimum thickness that the material can be machined. This project was carried out by analysis using SolidWork and by experiment using CNC machine. To ensure data is more reliable, this project was conducted together with another two materials, general purpose aluminium (GPAl) and mild steel (AISI 1018). All of them were tested under the same procedure but different in parameter of machining and force applied during analysis. This is due to the different properties of the material. From the experiment it is identified that the minimum thickness that Al 7075 can be machined by experiment is 1 mm while in analysis using SolidWork software is 0.80 mm thick. A different between two results is 2%. For GPAl and AISI 1018 material it found that the minimum thickness can be machined in theoretically is 5 mm and 2 mm respective, but for experimental result is 5 and 3 mm.

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