Norshah Afizi Shuaib
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Preferred name
Norshah Afizi Shuaib
Official Name
Norshah Afizi, Shuaib
Alternative Name
Shuaib, N. A.
Shuaib, Norshah Afizi Bin
Shuaib, Norshah Afizi
Afizi Shuaib, Norshah
Main Affiliation
Scopus Author ID
54939913100
Researcher ID
CFT-7632-2022

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Optimisation of cutting performance in drilling of aluminium alloy 7075 involving chilled air cooling under Taguchi method

2025 , Muhammad Hisyamuddin Rosli , Zailani Zainal Abidin , Norshah Afizi Shuaib , Muhammad Zikry Zainuddin , Adel Ali Azawqari

The use of lightweight Aluminium Alloy 7075 (AA7075) in aerospace and automotive industries is increasing due to its exceptional properties, such as high strength, good fatigue resistance, and excellent strength-to-weight ratio. However, this alloy is difficult to machine due to high ductility and heat generation during cutting. Cutting fluids are commonly used to deal with these problems, although they raise environmental concerns. The research aims to enhance drilling efficiency for AA7075, considering environmental impacts, through a greener method, a chilled air system. Their impact on tool wear and cutting force was evaluated through spindle speed, feed rate, and nozzle types by adopting the Taguchi method. Chisel edge wear was discovered to be a major contributor to tool wear. Lower feed rate and slower spindle speed using dual nozzle yielded better tool wear and cutting force performance. These findings provide feasible recommendations for industry practitioners seeking to employ eco-friendly chilled air systems to achieve optimal drilling efficiency for this type of material.

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Impact of chilled air nozzle types on surface integrity in drilling of aluminum alloy 1050

2024-07 , Zailani Zainal Abidin , Zakariya, Wan Nur Fakhira Wan , Roshaliza Hamidon , Muhammad Salihin Zakaria , Muhammad Hasnulhadi Mohammad Jaafar , Norshah Afizi Shuaib , Azmi Harun , Morsidi, Maziri

Using cutting fluid in the machining process for Aluminum Alloy 1050 is advantageous as it helps mitigate the effects of temperature generated during cutting. It can shorten tool life and impair the quality of machine parts. Despite its benefits, cutting fluids has several disadvantages, such as high expenses, potential environmental harm, and user health risks. This research evaluates the effects of green cutting conditions, particularly nozzle types, on the metallurgical properties of the material. Their impacts on tool wear, X-Ray Diffractometer (XRD) pattern, Full Width at Half Maximum (FWHM), crystallite size, and hardness during the drilling process were investigated. The findings indicate that using chilled air with dual nozzles for cooling and lubrication is highly effective, resulting in less tool wear and a relatively purer crystalline structure of the material compared to other conditions. These results emphasize the importance of controlling cutting conditions, especially nozzle types, to produce high-quality parts with improved metallurgical properties.

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