Noorhafiza Muhammad
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Preferred name
Noorhafiza Muhammad
Official Name
Noorhafiza, Muhammad
Alternative Name
Muhammad, N.
Muhammad, Noorhafiza
Muhammad, Noorhafiza Binti
Muhamad, N.
Main Affiliation
Scopus Author ID
36473624500
Researcher ID
D-8515-2015

Research Output
Now showing 1 - 2 of 2
  • Publication
    The preheating effect of mild steel layers deposited using SMAW at 100 A and 70 A
    (Semarak Ilmu Publishing, 2024-07)
    Md Idriss, Ahmed Nazrin
    ;
    Maleque, Md Abdul
    ;
    Kamdi, Zakiah
    ;
    Noorhafiza Muhammad
    ;
    Azhari, Azmir
    In surface melting, the preheating temperature is generally caused by the heat conduction through the substrate ahead of the molten pool, and their presence helps to increase the material dissolution. In this work, a comparative study was conducted to study the melt features of two samples produced at 100 A and 70 A using the stick welding process. The effect of the preheating at 100 A and 70 A on the defects, melt dimensions, surface roughness, deposition rates, and losses between samples were examined. It was found that all samples were free from crack, undercutting, or lack of fusion suggesting selected processing conditions and materials were successfully employed to hinder the problems. The clad at 100 A was associated with higher preheating temperatures and explained the reason for easing melt dissolution for finer rippling marks and surface roughness. The work demonstrated enormous spatter which was related to the burning of the electrode coating and metal evaporation that had brought the deposition rate to 100 A similar at 0.15 g/sec to the low spatter 70 A track. Low heat input can be the foundation for building high clad thickness and more dilution through high energy input is preferable for welding between two metals.
  • Publication
    Investigation of a single slope solar still integrated with gravels, sand and wick materials: an experimental approach
    (Springer, 2024-07)
    Bikash Ranjan Dillip Kumar Biswal
    ;
    Kamalakanta Moharana
    ;
    Noorhafiza Muduli
    ;
    Noorhafiza Muhammad
    ;
    Asnul Hadi Muhammad
    Through tapping into the boundless resources provided by the sea and sun, scientists have created a sustainable and cost-effective drinking water supply using solar-powered desalination. In this manuscript, utilizing gravels, sand and wick materials as the energy storage medium is one of the key sustainability modifications made for bettering the rate of evaporation within solar stills, hence enhancing the freshwater yield. Here, experiments on a single basin solar still with and without energy storage components have been carried out. Typically, energy storage materials are employed to enhance the rate of evaporation in solar stills, aiming to increase the yield of distilled water during nocturnal hours. Consequently, it was observed that using locally available heat storage materials in a solar still during daylight and overnight production of distillate for 15 liter of water input resulted in increases of 54.39 and 58.08%, respectively. In the case of upgraded solar desalination systems, the maximum thermal efficiencies were notably improved, with increases of 90.843, 84.464, and 66.326% compared to conventional solar desalination systems for water inputs of 15, 20, and 25 liters, respectively. The suggested solar still design is particularly well-suited for generating freshwater in regions with a pronounced demand, such as areas characterized by excessively saline groundwater, coastal zones, and rural locations.