2017 DOKTOR FALSAFAH KEJURUTERAAN MEKANIKAL UNIVERSITI TUN HUSSEIN ONN MALAYSIA
2013 SARJANA KEJURUTERAAN MEKANIKAL UNIVERSITI TUN HUSSEIN ONN MALAYSIA
2010 SARJANA MUDA KEJURUTERAAN MEKANIKAL UNIVERSITI TUN HUSSEIN ONN MALAYSIA
2004 SC/MCE/SPM/SPVM SMK DATO HJ HASSAN YUNOS
RESEARCH INTERESTS
1. Sustainable manufacturing with specifically on waste management and recyling
2. Recyling of waste aluminium or other metals to be used as a secondary resources
3. Modelling and Optimization using Response Surface Methodology (RSM) or Taguchi Method Robust Design
4. Life Cycle Assessment specifically on waste management
Numerical Prediction of Fracture and Perforation Behaviours of Recycled Aluminium Alloy AA6061 Using Taylor Cylinder Impact and Perforation Tests Nor Aziera Azman, Irfan Alias Farhan Latif, Mohd Khir Mohd Nor, Mohd Syazwan Abdul Samad, Saifulnizan Jamian, et al. Journal of Advanced Research in Applied Mechanics, 2025 Directly recycled AA6061, valued for its energy-efficient production and reduced environmental impact compared to primary aluminium, exhibits unique mechanical properties due to microstructural changes during recycling. Behavioural analysis under various loading conditions, including tensile and impact tests, reveals mild ductility and anisotropic deformation patterns such as petal formation, plugging, and fragmentation. This study investigates the fracture and perforation behaviour of AA6061 plates under high-velocity impacts using a numerical model based on the Johnson-Cook material and failure models. Simulations of Taylor cylinder impact tests, conducted at velocities ranging from 280 m/s to 370 m/s, show strong agreement with experimental data, validating the Simplified Johnson-Cook model’s effectiveness in predicting fracture behaviour under impact loading. Building on these results, the study explores the Johnson-Cook Failure Model in perforation tests with severely fractured specimens. Simulations accurately predict perforation behaviour at lower impact velocities and smaller bullet diameters, particularly in cases of limited deformation. However, at higher velocities and larger bullet diameters, prediction accuracy decreases due to complex fracture patterns and asymmetric deformations. The study concludes that while the current failure model provides a foundational understanding of fracture and perforation behaviour in recycled AA6061, further refinements are necessary. Enhancing the failure model, specifically for recycled aluminium, could improve its predictive accuracy across a broader range of impact scenarios, addressing the limitations observed in cases of severe deformation and complex fracture mechanisms.
Quantitative Characterization of the Perforation Behaviour of Direct Recycled Aluminum Alloy 6061 Plates Subjected to High-Velocity Impact Irfan Alias Farhan Latif, Mohd Khir Mohd Nor, Nur Kamilah Yusuf, S Kanna Subramaniyan, Mohd Syazwan Abdul Samad, et al. Journal of Advanced Research in Applied Mechanics, 2024 This study aims to establish the perforation behaviour of direct recycled AA6061 to help establish the properties of the current most optimized direct recycled AA6061 through the hot press forging technique. This was achieved by subjecting direct recycled AA6061 plates of varying thickness to high-velocity impacts using a single-stage gas gun setup. The impactor is a hemispherical steel projectile of 13mm in length and 8.5mm in diameter. Plates of 3,4,5 and 10mm thickness were tested at velocities ranging from 120 m/s to 402 m/s. The deformation profiles of the impacted plates were captured and analyzed to quantitatively establish the perforation behaviour of recycled AA6061 plates. The plates showed irregular and non-axis symmetric patterns of deformation hinting the material exhibits anisotropic properties. The changes in the deformation profile were investigated in relation to changes in impact velocities and plate thickness were made to understand how they impact the profile. The deformation area was observed to be decreasing when the bullet impact velocity was increased. Higher velocity impact events lead to more material ejection from the plate in the form of fragmentation. Additionally, the deformation zone was observed to be getting smaller with an increase in the thickness of the plate. Thicker plates were found to have more fragmentation compared to thinner plates. Ductile failure characteristics such as petal formation and plugging were observed along with brittle characteristics such as fragmentation and conal fractures. Lower-velocity impacts lead to more energy absorbed by the target plates. Thicker plates observed more of the bullet’s energy. Through experimentation, the deformation behaviour of the directly recycled AA6061 material was established. This data can be used as a base for further research into the material’s behaviour characterisation.
Optimizing strength of directly recycled aluminum chip-based parts through a hybrid RSM-GA-ANN approach in sustainable hot forging Yahya M. Altharan, Shazarel Shamsudin, Mohd Amri Lajis, Sami Al-Alimi, Nur Kamilah Yusuf, et al. Plos One, 2024 Direct recycling of aluminum waste is crucial in sustainable manufacturing to mitigate environmental impact and conserve resources. This work was carried out to study the application of hot press forging (HPF) in recycling AA6061 aluminum chip waste, aiming to optimize operating factors using Response Surface Methodology (RSM), Artificial Neural Network (ANN) and Genetic algorithm (GA) strategy to maximize the strength of recycled parts. The experimental runs were designed using Full factorial and RSM via Minitab 21 software. RSM-ANN models were employed to examine the effect of factors and their interactions on response and to predict output, while GA-RSM and GA-ANN were used for optimization. The chips of different morphology were cold compressed into billet form and then hot forged. The effect of varying forging temperature (Tp, 450–550°C), holding time (HT, 60–120 minutes), and chip surface area to volume ratio (AS:V, 15.4–52.6 mm2/mm3) on ultimate tensile strength (UTS) was examined. Maximum UTS (237.4 MPa) was achieved at 550°C, 120 minutes and 15.4 mm2/mm3 of chip’s AS: V. The Tp had the largest contributing effect ratio on the UTS, followed by HT and AS:V according to ANOVA analysis. The proposed optimization process suggested 550°C, 60 minutes, and 15.4 mm2 as the optimal condition yielding the maximum UTS. The developed models’ evaluation results showed that ANN (with MSE = 1.48%) outperformed RSM model. Overall, the study promotes sustainable production by demonstrating the potential of integrating RSM and ML to optimize complex manufacturing processes and improve product quality.
Life cycle assessment of direct recycling hot press forging of aluminium AA7075 metal matrix composite Muhamad Haikal Mohd Khaireez, Nur Kamilah Yusuf, Atef M Ghaleb, Sami Al-Alimi, Aiman Rahmat, et al. Materials Research Express, 2024 The primary objective of this research is to investigate the process of direct recycling of AA7075 aluminium alloy, which is extensively utilised in the aerospace and flight sectors due to its exceptional strength and lightweight characteristics. Alumina (Al2O3) is used as a reinforcing agent and the effect of hot press forging (HPF) parameters on the mechanical characteristics and surface integrity of the metal matrix composite (MMC) constructed of AA7075 alloy with 1% Al2O3 has been studied. Furthermore, the utilisation of an integrated life cycle assessment (LCA) approach is implemented to assess the environmental impacts and economic expenses associated with the recycling of aluminium via high-pressure forming for both the metal matrix composite and AA7075 alloy. Response surface methodology (RSM) is applied to ascertain the optimal parameters for high-performance filtration. The findings suggest that employing a forging temperature of 532.34 °C and a holding time of 60 min produces favourable results. When comparing the characteristics of the MMC and recycled aluminium, it can be observed that they both demonstrate similar essential process attributes. The utilisation of HPF in conjunction with the Multi-Material Composite has the potential to yield a reduction of up to 24.97% in Global Warming Potential (GWP). This research demonstrates the efficacy of HPF as a viable approach for environmentally conscious and economically efficient recycling of AA7075 aluminium scrap, thereby improving product performance and promoting sustainability.
Development of a Recycling Technology Selection Framework for Sustainable Metal Recycling MS Raifuddin, MA Lajis, S Shamsudin, NK Yusuf, A Nawawi International Journal of Engineering Materials and Manufacture 11 (2), 49-57 , 2026 2026
An Optimization Approach and Environmental Evaluation of Aluminium AA7075 Alloy in Metal Forming Process by Solid State Recycling Hot Press Forging IST Tukiat, NK Yusuf, MA bin Lajis, MHM Khaireez International Journal of Integrated Engineering 17 (8), 227-243 , 2025 2025
The effect of solid-state process and heat treatment on the fatigue life of RHA-reinforced AA6061 chip-based recycled composite. AS Omar, S Shamsudin, YM Altharan, MA Lajis, NK Yusuf AIMS Materials Science 12 (2) , 2025 2025
Numerical Prediction of Fracture and Perforation Behaviours of Recycled Aluminium Alloy AA6061 Using Taylor Cylinder Impact and Perforation Tests NA Azman, IA Farhan, MKM Nor, MSA Samad, S Jamian, MA Lajis, ... Journal of Advanced Research in Applied Mechanics 132 (1), 39-59 , 2025 2025
Recycling aluminium for sustainable development: A review of different processing technologies in green manufacturing S Al-Alimi, NK Yusuf, AM Ghaleb, MA Lajis, S Shamsudin, W Zhou, ... Results in engineering 23, 102566 , 2024 2024 Citations: 142
Response surface methodology and machine learning optimisations comparisons of recycled AA6061-B4C–ZrO2 hybrid metal matrix composites via hot forging forming process S Al-Alimi, NK Yusuf, AM Ghaleb, A Adam, MA Lajis, S Shamsudin, ... Heliyon 10 (12) , 2024 2024 Citations: 12
Optimizing strength of directly recycled aluminum chip-based parts through a hybrid RSM-GA-ANN approach in sustainable hot forging YM Altharan, S Shamsudin, MA Lajis, S Al-Alimi, NK Yusuf, NAM Alduais, ... PLoS One 19 (3), e0300504 , 2024 2024 Citations: 7
Life cycle assessment of direct recycling hot press forging of aluminium AA7075 metal matrix composite MHM Khaireez, NK Yusuf, AM Ghaleb, S Al-Alimi, A Rahmat, IST Tukiat, ... Materials Research Express 11 (3), 036519 , 2024 2024 Citations: 8
Sustainable aluminum recycling method K Haikal, NK Yusuf, A Hamdan, E Nasha Journal of Multi-Disciplinary Engineering Reviews 1 (1), 8-19 , 2024 2024 Citations: 9
Recycling aluminium for sustainable development: a review of different processing technologies in green manufacturing, Results Eng. 23 (2024) 102566 S Al-Alimi, NK Yusuf, AM Ghaleb, MA Lajis, S Shamsudin, W Zhou, ... 2024 Citations: 12
Quantitative characterization of the perforation behaviour of direct recycled aluminum alloy 6061 plates subjected to high-velocity impact IAF Latif, MKM Nor, NK Yusuf, SK Subramaniyan, MSA Samad, N Ma’at J Adv Res Appl Mech 118 (1), 193-211 , 2024 2024 Citations: 2
Life cycle assessment of direct recycling hot press forging of aluminium AA7075 metal matrix composite MH Mohd Khaireez, NK Yusuf, A M Ghaleb, S Al-Alimi, A Rahmat, ... Materials Research Express 11, 1-16 , 2024 2024
Microstructure and mechanical properties of magnesium ZRE1 (Mg-Zn-Zr) alloy with rare earth element (samarium) addition IST Tukiat, NK Yusuf, H Khaireez, S Al-Alimi, MA Lajis, S Shamsudin, ... Int. J. Technol 15, 49-62 , 2024 2024 Citations: 4
Effects of preheating temperature on deformed AA6061 aluminium properties of hot equal channel angular pressing (ECAP) by using deform-3D software S Al-Alimi, MA Lajis, S Shamsudin, NK Yusuf, Y Altharan, DH Didane, ... Arabian Journal for Science and Engineering 48 (3), 3381-3389 , 2023 2023 Citations: 5
Effect of direct recycling hot press forging parameters on mechanical properties and surface integrity of AA7075 aluminum alloys NE Ruhaizat, NK Yusuf, MA Lajis, S Al-Alimi, S Shamsudin, IST Tukiat, ... Metals 12 (10), 1555 , 2022 2022 Citations: 15
Review on Life Cycle Analysis (LCA) Studies to Evaluate the Impact of Waste Managing Aluminium on The Environment ML Khairudin, NK Yusuf Research Progress in Mechanical and Manufacturing Engineering 3 (1), 184-192 , 2022 2022
A Review on Aluminum Alloy Recycling Technique LL Liaw, NK Yusuf Research Progress in Mechanical and Manufacturing Engineering 3 (1), 175-183 , 2022 2022 Citations: 2
Recycling Aluminium AA6061 Chips with Reinforced Boron Carbide (B 4 C) and Zirconia (ZrO 2 ) Particles via Hot Extrusion S Al-Alimi, S Shamsudin, NK Yusuf, MA Lajis, W Zhou, DH Didane, ... Metals 12 (8), 1329 , 2022 2022 Citations: 29
Effect of Direct Recycling Hot Press Forging Parameters on Mechanical Properties and Surface Integrity of AA7075 Aluminum Alloys. Metals 2022, 12, 1555 NE Ruhaizat, NK Yusuf, MA Lajis, S Al-Alimi, S Shamsudin, IST Tukiat, ... s Note: MDPI stays neutral with regard to jurisdictional claims in published … , 2022 2022 Citations: 1
Life cycle assessment on the direct recycling aluminium alloy AA6061 chips and metal matrix composite (MMC-AlR) NK Yusuf, MA Lajis, A Ahmad International Journal of Integrated Engineering 13 (7), 95-100 , 2021 2021 Citations: 12
MOST CITED SCHOLAR PUBLICATIONS
Novel hydroxyapatite-based bio-ceramic hollow fiber membrane derived from waste cow bone for textile wastewater treatment SK Hubadillah, MHD Othman, ZS Tai, MR Jamalludin, NK Yusuf, ... Chemical Engineering Journal 379, 122396 , 2020 2020 Citations: 171
Recycling aluminium for sustainable development: A review of different processing technologies in green manufacturing S Al-Alimi, NK Yusuf, AM Ghaleb, MA Lajis, S Shamsudin, W Zhou, ... Results in engineering 23, 102566 , 2024 2024 Citations: 142
Hot press as a sustainable direct recycling technique of aluminium: mechanical properties and surface integrity NK Yusuf, MA Lajis, A Ahmad Materials 10 (8), 902 , 2017 2017 Citations: 56
Effect of operating temperature on direct recycling aluminium chips (AA6061) in hot press forging process NK Yusuf, MA Lajis, MI Daud, MZ Noh Applied Mechanics and Materials 315, 728-732 , 2013 2013 Citations: 52
Multiresponse optimization and environmental analysis in direct recycling hot press forging of aluminum AA6061 NK Yusuf, MA Lajis, A Ahmad Materials 12 (12), 1918 , 2019 2019 Citations: 48
On the Role of Processing Parameters in Producing Recycled Aluminum AA6061 Based Metal Matrix Composite (MMC-Al R ) Prepared Using Hot Press Forging … A Ahmad, MA Lajis, NK Yusuf Materials 10 (9), 1098 , 2017 2017 Citations: 48
Statistical Optimization by the Response Surface Methodology of Direct Recycled Aluminum-Alumina Metal Matrix Composite (MMC-Al R ) Employing the Metal … A Ahmad, MA Lajis, NK Yusuf, SN Ab Rahim Processes 8 (7), 805 , 2020 2020 Citations: 43
Hot press forging as the direct recycling technique of aluminium—A review A Ahmad, MA Lajis, NK Yusuf, A Wagiman ARPN J. Eng. Appl. Sci 11 (4), 2258-2265 , 2016 2016 Citations: 38
Mechanical properties of recycled aluminium chip reinforced with alumina (Al2O3) particle: Mechanische Eigenschaften von mit Aluminiumoxid (Al2O3) verstärkten recycelten … MA Lajis, A Ahmad, NK Yusuf, AH Azami, A Wagiman Materialwissenschaft Und Werkstofftechnik 48 (3-4), 306-310 , 2017 2017 Citations: 30
Optimization of hot press forging parameters in direct recycling of aluminium chip (AA 6061) MA Lajis, SS Khamis, NK Yusuf Key Engineering Materials 622, 223-230 , 2014 2014 Citations: 30
Recycling Aluminium AA6061 Chips with Reinforced Boron Carbide (B 4 C) and Zirconia (ZrO 2 ) Particles via Hot Extrusion S Al-Alimi, S Shamsudin, NK Yusuf, MA Lajis, W Zhou, DH Didane, ... Metals 12 (8), 1329 , 2022 2022 Citations: 29
Response surface methodology application in optimization of performance and exhaust emissions of RON 98, aviation gasoline 100LL and the blends in Lycoming O-320 engine T Kumar, R Mohsin, Z Abd Majid, MFA Ghafir, NK Yusuf, JY Kim, ... Fuel 256, 115909 , 2019 2019 Citations: 28
Life cycle assessment on the effects of parameter setting in direct recycling hot press forging of aluminum MA Lajis, NK Yusuf, A Ahmad Materials science forum 923, 143-148 , 2018 2018 Citations: 22
Development of Hot Equal Channel Angular Processing (ECAP) Consolidation Technique in the Production of Boron Carbide (B4C)-Reinforced Aluminium Chip (AA6061)-Based Composite Sami. S Al-Alimi, MA Lajis, S Shamsudin, NK Yusuf, BL Chan, DH Didane, ... International Journal of Renewable Energy Development 10 (3) , 2021 2021 Citations: 18
Characterization of anisotropic damage behaviour of recycled aluminium alloys AA6061 undergoing high velocity impact CS Ho, MA Ab Rani, MKM Nor, N Ma'at, MTHH Sultan, MA Lajis, NK Yusuf International Journal of Integrated Engineering 11 (1) , 2019 2019 Citations: 18
Parametric optimisation of heat treated recycling aluminium (AA6061) by response surface methodology A Ahmad, MA Lajis, NK Yusuf, S Shamsudin, ZW Zhong AIP Conference Proceedings 1885 (1), 020046 , 2017 2017 Citations: 16
Effect of direct recycling hot press forging parameters on mechanical properties and surface integrity of AA7075 aluminum alloys NE Ruhaizat, NK Yusuf, MA Lajis, S Al-Alimi, S Shamsudin, IST Tukiat, ... Metals 12 (10), 1555 , 2022 2022 Citations: 15
Conjectured the Behaviour of a Recycled Metal Matrix Composite (MMC–Al R ) Developed through Hot Press Forging by Means of 3D FEM Simulation A Ahmad, MA Lajis, S Shamsudin, NK Yusuf Materials 11 (6), 958 , 2018 2018 Citations: 14
Hot extrusion followed by a hot ecap consolidation combined technique in the production of boron carbide (B4C) reinforced With aluminium chips (AA6061) composite S Al-Alimi, MA Lajis, S Shamsudin, NK Yusuf, BL Chan, DD Hissein, ... Materials and technology 55 (3), 347–354-347–354 , 2021 2021 Citations: 13
Response surface methodology and machine learning optimisations comparisons of recycled AA6061-B4C–ZrO2 hybrid metal matrix composites via hot forging forming process S Al-Alimi, NK Yusuf, AM Ghaleb, A Adam, MA Lajis, S Shamsudin, ... Heliyon 10 (12) , 2024 2024 Citations: 12
