Muhamad Nasir Murad
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Preferred name
Muhamad Nasir Murad
Official Name
Muhamad Nasir , Murad
Alternative Name
Murad, Muhammad Nasir
Murad, M. N.
Murad, N. M.
Main Affiliation
Scopus Author ID
25723617900
Researcher ID
ACV-9517-2022

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Publication

Ergonomics issues among operators in composite manual hand layup activities: a systematic literature review

2023 , M. Zulhaimi Yusof , Ummi Noor Nazahiah Abdullah , Muhamad Nasir Murad

Two laying techniques are used for composite manufacturing. They are done automatically and hand layup manually. These two laying techniques are used widely in the world. In Malaysia, the manual hand layup is more preferable in producing the secondary structures due to it being a cost-effective and efficient technique. However, it puts the operators at risk and may lead to musculoskeletal disorders. Previously, the management of one composite manufacturing company received complaints from the operators regarding musculoskeletal disorders. This paper aims to get the ideas of the potential for future ergonomics studies on the manual hand layup in composite manufacturing. A systematic literature review has been applied in this study. The main results show that there have not been many kinds of ergonomics studies in this field. Only six previous related studies were found in the past six years recently. In future works, it is suggested that more ergonomics studies are needed to be conducted in composite manufacturing. The information gathered may be helpful for employers to take action to prevent their operators from getting musculoskeletal disorders. In addition, future researchers may extend the existing findings from previous studies.

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Roles of new bio-based nanolubricants towards eco-friendly and improved machinability of Inconel 718 alloys

2020-04-01 , Ali M.A.M. , Azwan Iskandar Azmi , Muhamad Nasir Murad , Mohd Zahiruddin Md. Zain , Ahmad Nabil Mohd Khalil , Norshah Aizat Shuaib

The adverse effects of mineral oil-based metal cutting fluid on environmental sustainability have led to increased industrial concerns. Alternatively, biodegradable lubricants such as vegetable oil has a more positive impact with equivalent performance, but insufficient research on their benefits demands further exploration. This work features extensive experimental investigations on machining of Inconel 718 using novel formulations of coconut bio-based oil with enhanced nanoparticles and coco-amido-propyl-betaine. Bio-based with 0.8 wt% of Al2O3 managed to minimise the rapid growth of tool wear and prolong the tool life by 40.17%. Conversely, bio-based with 0.5 wt% of Al2O3 yielded lower values of cutting force (64.32 N), spindle power (2070 kW), specific cutting energy (6.55 W/mm3), and surface roughness (0.29 μm). The outstanding performance of bio-based nanolubricants contributed to superior machinability efficiency and eco-friendly machining environments.

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Experimental investigation of machining parameter on hole quality in drilling Ti-6Al-4V

2020 , R A Rashid , Muhamad Nasir Murad , Roshaliza Hamidon , Shafizan Shariffuddin , Ali, Mohamed Ashraf Mahboob

Titanium alloys (Ti-6Al-4V) are greatly recommended for high performance applications because of their outstanding properties such as low weight, high corrosion resistance and high strength. However, drilling Ti-6Al-4V generates high cutting temperature, especially during high speed drilling (HSD), increased the chemical reactivity of Ti-6Al-4V, thus leading to poor hole quality. High cutting speed increases the temperature during the drilling process, therefore, it is important to consider this factor to achieve better hole quality. This study focuses on the correlation of machining parameter and the quality of the hole produced in terms of hole diameter, roundness and surface roughness. The experiment was conducted using a 6 mm diameter of coated (TiAlN) carbide tool under MQL and MQCL conditions with varying cutting speeds of 65, 75, 85 and 95 m/min and constant 0.02 mm/rev feed rate.

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