Norshah Aizat Shuaib
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Preferred name
Norshah Aizat Shuaib
Official Name
Norshah Aizat, Shuaib
Alternative Name
Shuaib, Norshah A.
Shuaib, N. A.
Shuaib, Norshah Aizat bin
Main Affiliation
Scopus Author ID
25628938500
Researcher ID
AAM-7559-2021

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Publication

Tribological Behaviour of Graphene Nanoparticles as an Additive in Vegetable Based Oil

2024-04-19 , Noor N.Z.M. , Zailani Zainal Abidin , Zain M.Z.M. , Norshah Aizat Shuaib

Friction between cutting tool and workpiece generates heat, which can shorten tool life and impair the quality of machined parts. Thus, the use of appropriate lubricants is required to mitigate these issues. In this research, the use of different weight concentration of graphene nanoparticles (0.1 %, 0.5 % and 1.0 %) to augment commercially available vegetable-based oil, LB3000 was investigated using tribological test. Their performances were evaluated in form of the coefficient of friction, wear scar diameter, kinematic viscosity and thermal conductivity. Higher concentration of graphene was found to be more effective in terms of lowering coefficients of friction, reducing wear scar diameter, and improving kinematic viscosity and thermal conductivity. This study clearly demonstrates that a suitable combination of graphene nanoparticles in oil can improve tribological behaviour as well as lubrication performance.

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Chemical coating techniques to enhance the surface quality of 3D printing (FDM) part: A short review

2024-03-07 , Khalid M. , Norshah Aizat Shuaib , Mohd Haidiezul Jamal Ab Hadi , Dolah M.S. , Mohamad Suhaimi Shahrin , Nik Mizamzul Mehat , Morsidi M.

The staircase effect describes the overall print surface roughness indicated through the layer by layer of Fused Deposition Modelling (FDM), also known as the Fused Filament Fabrication (FFF) process. Due to the poor surface finish, post-processing can improve the aesthetic effect. The different post-processing procedures for FDM parts are classified as material removal and material addition. This paper reviews four types of material addition methods based on chemical coating post-processing techniques; gap filling, coating spray, plating, and water transfer printing of based on production time, cost and related environmental issues. From the review, spray coating generally is cost-effective and less hazardous to the environment. The paper presents a benchmark between the available material addition techniques as a post-processing step for the FDM printed parts.

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Effect of Build Parameters on Process Energy Consumption and Material Usage in Fused Deposition Modelling Method

2022-01-01 , Omar N.W.Y. , Norshah Aizat Shuaib , Azwan Iskandar Azmi , Mohd Haidiezul Jamal Ab Hadi

Fused deposition modelling (FDM) process is one of popular 3D printing technologies, especially on printing polymer materials for a rapid prototyping. The process is well known for its resource saving, with no tooling cost required and minimum energy demand. However, the challenge is that the process performances are highly influenced by selection of parameters. From literature, consideration on material usage and process energy demand in FDM processes is still limited. This study used an L9 Taguchi orthogonal array design in investigating effect of build orientation, printing speed and layer thickness on process energy consumption and total material usage in FDM processes. The p-values from ANOVA analysis revealed that only layer thickness and build orientation had significant effect on the outputs. In minimising material usage, the strategy is to select the correct build orientation to avoid need of support structure. For reducing energy demand, optimum layer thickness needs to be determined by considering other factors such as mechanical properties and surface roughness. This study provides preliminary findings which will benefit FDM users in using resources efficiently. Further studies are required to complement the findings from the aspects of mechanical and physical properties of the printed products.

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Surface treatment of recycled carbon fibre for interfacial enhancement in reinforced polypropylene product

2020 , A Salleh , Norshah Aizat Shuaib , N W Y Omar , Azwan Iskandar Azmi

Recycled carbon fibre (rCF) is used in various applications as measures to reduce the carbon fibre waste in landfill. This study focuses on using rCF in powder form in injection moulded polypropylene (PP) products. The rCF was treated with 0.5 mol/L and 1.0 mol/L nitric acid. The tensile and flexural properties were evaluated and morphological surface of the samples was characterised using scanning electron microscopy (SEM). As the result, higher concentration of nitric acid increased the tensile strength but leads to lower flexural strength. Apart from that, the environmental assessment using OpenLCA software shows that the addition of RCF filler loading leads to reduction of climate change and acidification potential.

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Proses kreatif penulisan cerpen: satu tinjauan merentas generasi

2019 , Norshah Aizat Shuaib , Juliana Ahmad

Proses kreatif merupakan sesuatu yang unik dan kekal menjadi rahsia seorang penulis. Proses ini selalunya tidak dapat diketahui oleh pembaca, melainkan diterangkan oleh penulis sendiri. Dalam kajian ini, proses kreatif penulis-penulis cerpen daripada generasi berbeza iaitu penulis dekad 50-an (ditulis sebagai generasi terdahulu) dan kini telah dibandingkan menerusi kajian teks berkenaan proses kreatif dan temu bual. Skop perbincangan telah dipecahkan kepada tiga bahagian iaitu peluang untuk berkarya, hubungan dengan unsur alam dan perkembangan teknologi. Kajian ini mendapati, peluang berkarya untuk penulis terdahulu lebih terbatas atas faktor media arus perdana untuk menyiarkan karya agak terhad. Dari aspek hubungan unsur alam, penulis terdahulu dilihat lebih banyak mengetengahkan unsur alam dalam karya-karya mereka. Hal ini kerana penulis masa kini tidak begitu terdedah dengan unsur alam dalam kehidupan seharian, jika dibandingkan dengan penulis terdahulu. Perkembangan teknologi pula telah menyaksikan lambakan karya penulis muda atau masa kini dalam pelbagai platform, terutamanya dalam media sosial. Penulis masa kini lebih akrab dengan media-media digital yang lebih bebas dan tidak mempunyai tahap saringan atau penilaian editor yang begitu teliti. Secara keseluruhan, proses kreatif seseorang penulis didapati berubah dengan jelas merentas generasi, selari dengan perkembangan teknologi. Perubahan proses kreatif ini mempengaruhi isu-isu yang disampaikan penulis dalam karya, gaya bahasa dan kualiti penulisan.

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Effect of cutting environment and swept angle selection in milling operation

2021-12-01 , Zailani Zainal Abidin , Rusli N.S.N. , Norshah Aizat Shuaib

Cutting fluids are frequently aimed to enhance machinability through cooling, lubricating and flushing actions. However, their use in machining creates major concerns in terms of health footprint and environmental effects throughout their lifecycle. Alternative methods, such as dry cutting and minimum quantity lubrication, were used to mitigate these issues. This research also will investigate the effect of swept angle selection, 30% and 60% of tool diameter step over under different cutting conditions during milling of aluminium alloy material. Their impact on tool wear, surface roughness, burr and chip formation were compared. Results pointed that the application of lower swept angle in conjunction with minimum quantity lubricant system has significantly reduced tool wear, decreased burr and chip formation, as well as improved surface quality as compared to dry machining. The work clearly shows how the importance of swept angle selection and cutting condition in refining machining performance could improve the machinability of the material.

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Publication

Machinability of Nickel Titanium Shape Memory Alloys: A Review

2021-01-01 , Noor N.Z.M. , Zailani Zainal Abidin , Roshaliza Hamidon , Norshah Aizat Shuaib

Shape memory alloys of Nickel Titanium (NiTi) reveal a reversible diffusionless transition between phases, resulting in unique properties and applications. It is widely used in varieties of products; especially in aerospace and medical fields. Yet, these alloys known as hard-to-machine materials owing to their properties of unconventional stress-strain behaviour, high work strain hardening and high ductility. That’s why their machinability is a major issue. The common drawbacks are serious burr formation, rapid tool wear, poor surface quality and high cutting force. This paper puts forward any possibilities to enhance the machining performance through paper reviews from previous researchers. A notable finding is that the machinability issues can be reduced or lessened by changing the cutting parameters and cutting conditions in order to improve the machinability of NiTi alloys.

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Mechanical properties and environmental assessment of recycled carbon fibre reinforced polypropylene and acrylonitrile butadiene styrene products

2020 , A N Allawi , Norshah Aizat Shuaib , N W Y Omar , Azwan Iskandar Azmi

In this study, the main objective is to determine effect of recycled carbon fibre (RCF) on the mechanical properties of thermoplastics composites and associated environmental impacts. Such study is important to improve the strength of the composites as previous studies are limited on RCF composites, particularly in environmental aspects. In the compounding stage, extrusion process was carried out by using two different thermoplastics i.e. polypropylene (PP) and acrylonitrile butadience styrene (ABS) mixing with RCF. Particle size and weight loading of RCF were chosen as parameters to be studied. Bonding strength between the RCF and thermoplastics matrix was investigated through tensile and flexural properties. Lastly, the assessment of the products was carried out to determine the environmental impacts. Generally, the incorporation of RCF into PP and ABS plastic increases the tensile and flexural properties of the samples. It can be seen that the addition of rCF significantly improves tensile modulus and flexural strength up to 10 wt% filler loading. From the environmental impact assessment, the ABS products have greater impact in all categories. The usage of rCF reduce the amount of plastic hence leads to lower environmental impacts. The product has a potential to be used in mechanical demanding application particularly those require high flexural strength and tensile modulus properties.

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Investigating the effect of steel wire and carbon black from worn out tyre on the strength of concrete

2024-10 , Norlia Mohamad Ibrahim , Ali Naqiuddin Zamah Shari , Nur Zakiah Anis Abdul Rahim , Nur Liza Rahim , Mustaqqim Abdul Rahim , Roshazita Che Amat , Norshah Aizat Shuaib , György Deak

Technology in concrete is rapidly developing to improve the quality and properties of concrete. One of the many recycled materials is worn-out tyres. Currently, the use of tires is very widespread considering the use of vehicles that increase from time to time. Piles of discarded tires can cause a lot of damage to the environment. So, by using steel wire waste (SWW) as new fiber reinforcement in concrete and with the combination with carbon black (CB), it is hoped that, by doing this, not only it could improve the quality of concrete, but also preserves the environment. Therefore, the objective of this research was, to identify the properties of fresh concrete with the addition of SWW and CB, and also to investigate the physical and mechanical properties of hardened concrete, incorporating of SWW as additional fiber reinforcement and CB. For fresh concrete, workability using a slump test was conducted. Several tests were carried out on the properties of hardened concrete. Among them were compressive strength, flexural strength, splitting tensile strength, and water absorption. The physical appearance of the concrete has also been examined and recorded. There are four batches of concrete which consist of one control batch and three batches of concrete with various weights of SWW which are in the portion of 300 g, 600 g, and 900 g, and the weight of CB is maintained at 300 g for all batches. For workability, all concrete batches with the addition of SWW and CB show acceptable workability. For the case of the density of fresh concrete, samples containing 900 g addition of SWW have the highest density which was 2520 kg/m³, as expected. Results for water absorption show that the lowest value is contributed by the control sample which was 7.6%. For compressive and flexural strength, 300 g addition of SWW has the highest value which was 28.52 MPa for compressive strength and 7.52 MPa for flexural strength. Lastly, for splitting tensile strength, the highest value was also obtained when 300 g addition of SW was added which was 5.4 MPa. To conclude, SWW and CB can be added to concrete to obtain comparable strength of concrete. However, some modifications could be made to both recycle materials to improve concrete performance.

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SANDBLASTING POST-PROCESSING ANALYSIS TO IMPROVE OF FUSED FILAMENT FABRICATIONS PARTS

2023-01-01 , Khalid M. , Norshah Aizat Shuaib , Mohd Haidiezul Jamal Ab Hadi

Sandblasting is a post-processing process that is required to improve the surface due to the layered nature of fused filament fabrication parts. This paper presents preliminary work based on full factorial design of experiment, considering pressure (100 kPa and 700 kPa), time (10 s and 120 s), distance (10 mm and 370 mm) and aluminium oxide abrasive which is 106 µm and 29.5 µm of particles size as the input factors. The effect of the parameters on the surface roughness (Sa) for flat and curve surface, material usage and energy consumption allow were analysed. The result shows that both Sa for flat and Sa curve surface were highly influenced by the abrasive particles size and time with the highest changes of Sa for flat and curve reaches up to 2.825 µm and 6.090 µm respectively. This study provides information on how sandblasting parameters should be selected in improving surface quality and resource usage.

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