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Recently, because of the rising population, carbon overloading, and environmental distress, human beings have needed to increase awareness and responsibility for the reduction of agricultural waste. The utilization of agricultural waste as a filler material in reinforced polymers is a fascinating discovery. This review paper attempts to study the physical, mechanical, and thermal behavior of rice husk (RH) as a fiber for reinforcing various synthetic polymers, based on recent studies, conducted between 2017 and 2021. It also highlights that advanced modification techniques could further improve the performance of composites by tailoring the physical and chemical substances of the fiber or matrix. The thermal properties, including flame-retardance and thermal behavior, are also discussed. The characteristics of the fiber–matrix interaction between RH and the polymer matrix provide essential insights into the future-ready applications of this agricultural waste fiber. The way forward in researching RH polymer composites is finally reviewed.
Mohamed Suhot; Mohamad Hassan; Sa’Ardin Aziz; Mohd Md Daud. Recent Progress of Rice Husk Reinforced Polymer Composites: A Review. Polymers 2021, 13, 2391 .
AMA StyleMohamed Suhot, Mohamad Hassan, Sa’Ardin Aziz, Mohd Md Daud. Recent Progress of Rice Husk Reinforced Polymer Composites: A Review. Polymers. 2021; 13 (15):2391.
Chicago/Turabian StyleMohamed Suhot; Mohamad Hassan; Sa’Ardin Aziz; Mohd Md Daud. 2021. "Recent Progress of Rice Husk Reinforced Polymer Composites: A Review." Polymers 13, no. 15: 2391.
Hybrid composites have recently become attractive to scholars due to their significant potential to overcome the drawbacks of monofiber composites. However, the simultaneous effects of independent parameters on the properties of these hybrid composites are still not clear as the previous studies have mostly focused on varying one parameter only. Therefore, a response surface methodology (RSM) is introduced. Accordingly, the present study attempts the modeling and optimization of four independent parameters on the kenaf/multi-walled carbon nanotubes (MWCNTs) hybrid composites by using three-level Box-Behnken RSM. The four parameters: kenaf fiber loading, NaOH concentration, MWCNTs loading and sonication time have been selected based on the past literature and their simultaneous effects on the tensile properties are studied. It was found that the optimized 10.029wt% of kenaf fiber loading, 4.057% NaOH concentration, 0.965wt% of MWCNTs loading and 2.970 h of sonication time predicted an optimum tensile strength and tensile modulus of 123.580 MPa and 16.084GPa respectively. Moreover, the validation through experiment of the predicted optimum results has been concluded and reveals that the results were reliable after considering the relatively low error levels. Besides, the response also displayed that the kenaf fiber loading had the highest degree of impact on the tensile properties compared to the other three parameters.
Ariff Farhan Mohd Nor; Mohamad Zaki Hassan; Zainudin A. Rasid; Sa’Ardin Abdul Aziz; Shamsul Sarip; Mohd Yusof Md Daud. Optimization on Tensile Properties of Kenaf/Multi-walled CNT Hybrid Composites with Box-Behnken Design. Applied Composite Materials 2021, 28, 607 -632.
AMA StyleAriff Farhan Mohd Nor, Mohamad Zaki Hassan, Zainudin A. Rasid, Sa’Ardin Abdul Aziz, Shamsul Sarip, Mohd Yusof Md Daud. Optimization on Tensile Properties of Kenaf/Multi-walled CNT Hybrid Composites with Box-Behnken Design. Applied Composite Materials. 2021; 28 (3):607-632.
Chicago/Turabian StyleAriff Farhan Mohd Nor; Mohamad Zaki Hassan; Zainudin A. Rasid; Sa’Ardin Abdul Aziz; Shamsul Sarip; Mohd Yusof Md Daud. 2021. "Optimization on Tensile Properties of Kenaf/Multi-walled CNT Hybrid Composites with Box-Behnken Design." Applied Composite Materials 28, no. 3: 607-632.
As a Malay Agricultural Settlement established in 1900, Kampung Baru which is located in Kuala Lumpur, has become a subject of prolonged national interests in terms of economic, social, environment, and political issues along with the pressure of modern and future development. This study investigated the urban morphological impact of Kampung Baru on the intensity of urban heat island (UHI) by developing a smart geodatabase for urban climatic mapping. The database provided baseline data which was crucial to unveil the spatiotemporal characteristics of UHI in Kampung Baru. Determination of the urban heat island intensity (UHII) in Kampung Baru was carried out through two approaches, mobile and fixed measurements. In a period of six days, the mobile measurement was conducted within the target area at night using a motorcycle equipped with the temperature and relative humidity data logger while the fixed measurement was conducted using the similar equipment installed at a school building in the area. Building height data were also collected while building footprints were digitized using a topographical map and the satellite image was used as the base map. To estimate the UHII, the reference data for rural temperature was obtained from the Malaysian Meteorological Department (MMD). All of the data were analyzed using ArcGIS to portray the temperature pattern in the study area. The analysis revealed the presence of UHI effect in Kampung Baru at the average building height of six to ten metres. The results of the fixed measurement showed an island-like local maximum in the study area with the average and maximum UHII values of 4.4 °C and 6.0 °C, respectively. The results from the mobile measurement also showed that the highest temperature was recorded in Kampung Baru rather than in the surrounding areas of different land-use types throughout the observation days. The spatial temperature distribution in the study area also showed that the most affected part was the south-west of Kampung Baru which is surrounded by tall buildings. The findings of this study could be utilized in the planning of new development in the city of Kuala Lumpur.
Sheikh Zaki; Nor Azid; Mohd Shahidan; Mohamad Hassan; Mohd Md Daud; Nor Abu Bakar; Sheikh Ahmad Zaki Shaikh Salim; Fitri Yakub. Analysis of Urban Morphological Effect on the Microclimate of the Urban Residential Area of Kampung Baru in Kuala Lumpur Using a Geospatial Approach. Sustainability 2020, 12, 7301 .
AMA StyleSheikh Zaki, Nor Azid, Mohd Shahidan, Mohamad Hassan, Mohd Md Daud, Nor Abu Bakar, Sheikh Ahmad Zaki Shaikh Salim, Fitri Yakub. Analysis of Urban Morphological Effect on the Microclimate of the Urban Residential Area of Kampung Baru in Kuala Lumpur Using a Geospatial Approach. Sustainability. 2020; 12 (18):7301.
Chicago/Turabian StyleSheikh Zaki; Nor Azid; Mohd Shahidan; Mohamad Hassan; Mohd Md Daud; Nor Abu Bakar; Sheikh Ahmad Zaki Shaikh Salim; Fitri Yakub. 2020. "Analysis of Urban Morphological Effect on the Microclimate of the Urban Residential Area of Kampung Baru in Kuala Lumpur Using a Geospatial Approach." Sustainability 12, no. 18: 7301.
This study investigated the variation of outdoor air temperature in the shaded area covered by buildings in an urban university campus in Malaysia. In-situ field measurements were conducted to measure the distribution of outdoor air temperature at eight different locations for seven days. Meanwhile, the building-induced shadows were generated using the AutoCAD Revit software to investigate the air temperature change. The study used four urban morphological parameters namely building to greenery ratio, sky view factor (SVF), and height-to-street width (H/W) ratio. The relationship between building-induced shadow and outdoor air temperature (Tout) obtained from the in-situ measurement was investigated. The results showed that the building-induced shadows could lower air temperature. It can be noted that a high ratio of building to greenery resulted in a higher air temperature. In contrast, the area with a low SVF value due to the combination of prolonged shading by buildings and trees had a lower air temperature. Thus, the area with a high building ratio, low greenery ratio, higher SVF value, and low H/W ratio potentially has a higher outdoor air temperature. Conclusively, combination of building shading created by appropriate ratio of building morphology and sufficient greenery able to improve the microclimate of a campus area.
Sheikh Zaki; Siti Syahidah; Mohd Shahidan; Mardiana Ahmad; Fitri Yakub; Mohamad Hassan; Mohd Md Daud. Assessment of Outdoor Air Temperature with Different Shaded Area within an Urban University Campus in Hot-Humid Climate. Sustainability 2020, 12, 5741 .
AMA StyleSheikh Zaki, Siti Syahidah, Mohd Shahidan, Mardiana Ahmad, Fitri Yakub, Mohamad Hassan, Mohd Md Daud. Assessment of Outdoor Air Temperature with Different Shaded Area within an Urban University Campus in Hot-Humid Climate. Sustainability. 2020; 12 (14):5741.
Chicago/Turabian StyleSheikh Zaki; Siti Syahidah; Mohd Shahidan; Mardiana Ahmad; Fitri Yakub; Mohamad Hassan; Mohd Md Daud. 2020. "Assessment of Outdoor Air Temperature with Different Shaded Area within an Urban University Campus in Hot-Humid Climate." Sustainability 12, no. 14: 5741.
The objective of this research is to optimize the alkaline treatment variables, including sodium hydroxide (NaOH) concentration, soaking, and drying time, that influence the mechanical behavior of bamboo fiber-reinforced epoxy composites. In this study, a Box–Behnken design (BBD) of the response surface methodology (RSM) was employed to design an experiment to investigate the mercerization effect of bamboo fiber-reinforced epoxy composites. The evaluation of predicted tensile strength as a variable parameter of bamboo fiber (Bambusa vulgaris) reinforced epoxy composite structures was determined using analysis of variance (ANOVA) of the quadratic model. In this study, a total of 17 experiment runs were measured and a significant regression for the coefficient between the variables was obtained. Further, the triangular and square core structures made of treated and untreated bamboo fiber-reinforced epoxy composites were tested under compressive loading. It was found that the optimum mercerization condition lies at 5.81 wt.% of the NaOH, after a soaking time of 3.99 h and a drying time of 72 h. This optimum alkaline treatment once again had a great effect on the structures whereby all the treated composite cores with square and triangular structures impressively outperformed the untreated bamboo structures. The treated triangular core of bamboo reinforced composites gave an outstanding performance compared to the treated and untreated square core composite structures for compressive loading and specific energy absorbing capability.
Mohamad Zaki Hassan; Siti Amni Roslan; S. M. Sapuan; Zainudin A. Rasid; Ariff Farhan Mohd Nor; Mohd Yusof Md Daud; Rozzeta Dolah; Mohd Zuhri Mohamed Yusoff. Mercerization Optimization of Bamboo (Bambusa vulgaris) Fiber-Reinforced Epoxy Composite Structures Using a Box–Behnken Design. Polymers 2020, 12, 1367 .
AMA StyleMohamad Zaki Hassan, Siti Amni Roslan, S. M. Sapuan, Zainudin A. Rasid, Ariff Farhan Mohd Nor, Mohd Yusof Md Daud, Rozzeta Dolah, Mohd Zuhri Mohamed Yusoff. Mercerization Optimization of Bamboo (Bambusa vulgaris) Fiber-Reinforced Epoxy Composite Structures Using a Box–Behnken Design. Polymers. 2020; 12 (6):1367.
Chicago/Turabian StyleMohamad Zaki Hassan; Siti Amni Roslan; S. M. Sapuan; Zainudin A. Rasid; Ariff Farhan Mohd Nor; Mohd Yusof Md Daud; Rozzeta Dolah; Mohd Zuhri Mohamed Yusoff. 2020. "Mercerization Optimization of Bamboo (Bambusa vulgaris) Fiber-Reinforced Epoxy Composite Structures Using a Box–Behnken Design." Polymers 12, no. 6: 1367.
Banana fiber has a high potential for use in fiber composite structures due to its promise as a polymer reinforcement. However, it has poor bonding characteristics with the matrixes due to hydrophobic–hydrophilic incompatibility, inconsistency in blending weight ratio, and fiber length instability. In this study, the optimal conditions for a banana/epoxy composite as determined previously were used to fabricate a sandwich structure where carbon/Kevlar twill plies acted as the skins. The structure was evaluated based on two experimental tests: low-velocity impact and compression after impact (CAI) tests. Here, the synthetic fiber including Kevlar, carbon, and glass sandwich structures were also tested for comparison purposes. In general, the results showed a low peak load and larger damage area in the optimal banana/epoxy structures. The impact damage area, as characterized by the dye penetration, increased with increasing impact energy. The optimal banana composite and synthetic fiber systems were proven to offer a similar residual strength and normalized strength when higher impact energies were applied. Delamination and fracture behavior were dominant in the optimal banana structures subjected to CAI testing. Finally, optimization of the compounding parameters of the optimal banana fibers improved the impact and CAI properties of the structure, making them comparable to those of synthetic sandwich composites.
Mohamad Zaki Hassan; S. M. Sapuan; Zainudin A. Rasid; Ariff Farhan Mohd Nor; Rozzeta Dolah; Mohd Yusof Md Daud. Impact Damage Resistance and Post-Impact Tolerance of Optimum Banana-Pseudo-Stem-Fiber-Reinforced Epoxy Sandwich Structures. Applied Sciences 2020, 10, 684 .
AMA StyleMohamad Zaki Hassan, S. M. Sapuan, Zainudin A. Rasid, Ariff Farhan Mohd Nor, Rozzeta Dolah, Mohd Yusof Md Daud. Impact Damage Resistance and Post-Impact Tolerance of Optimum Banana-Pseudo-Stem-Fiber-Reinforced Epoxy Sandwich Structures. Applied Sciences. 2020; 10 (2):684.
Chicago/Turabian StyleMohamad Zaki Hassan; S. M. Sapuan; Zainudin A. Rasid; Ariff Farhan Mohd Nor; Rozzeta Dolah; Mohd Yusof Md Daud. 2020. "Impact Damage Resistance and Post-Impact Tolerance of Optimum Banana-Pseudo-Stem-Fiber-Reinforced Epoxy Sandwich Structures." Applied Sciences 10, no. 2: 684.
Alkaline treatment is widely being used to treat natural fibres and it improves the fibre surface for better bonding with the polymer matrix. The aim of this study is to optimize the alkaline treatment variables such as sodium hydroxide (NaOH) concentration, soaking and drying time that influence the strength of natural fibres, including bamboo. In this study, Box-Behnken design (BBD) of the response surface method was employed to set an experimental parameter of alkaline treatment for the bamboo specimen. In order to investigate the effect of treatment conditions on crack propagation behaviour of the bamboo along the longitudinal direction, Mode I interlaminar fracture toughness (GIC) test was carried out. It can be suggested from the statistical analysis approach (ANOVA) that bamboo treated with 1 wt% concentration of NaOH is able to reach fracture toughness value up to 365.86 J/m2, which differs by only 0.82% from the experimental finding. It is also shown that all proposed variables for treatment in this study i.e. the concentration of the NaOH is highly significant with the soaking and drying time.
Siti Amni Roslan; Mohamad Zaki Hassan; Zainudin A. Rasid; Nurul Aini Bani; Shamsul Sarip; Mohd Yusof Md Daud; Firdaus Muhammad-Sukki. Mode I Fracture Toughness of Optimized Alkali-Treated Bambusa Vulgaris Bamboo by Box-Behnken Design. Proceedings of the 2nd Annual International Conference on Material, Machines and Methods for Sustainable Development (MMMS2020) 2019, 565 -575.
AMA StyleSiti Amni Roslan, Mohamad Zaki Hassan, Zainudin A. Rasid, Nurul Aini Bani, Shamsul Sarip, Mohd Yusof Md Daud, Firdaus Muhammad-Sukki. Mode I Fracture Toughness of Optimized Alkali-Treated Bambusa Vulgaris Bamboo by Box-Behnken Design. Proceedings of the 2nd Annual International Conference on Material, Machines and Methods for Sustainable Development (MMMS2020). 2019; ():565-575.
Chicago/Turabian StyleSiti Amni Roslan; Mohamad Zaki Hassan; Zainudin A. Rasid; Nurul Aini Bani; Shamsul Sarip; Mohd Yusof Md Daud; Firdaus Muhammad-Sukki. 2019. "Mode I Fracture Toughness of Optimized Alkali-Treated Bambusa Vulgaris Bamboo by Box-Behnken Design." Proceedings of the 2nd Annual International Conference on Material, Machines and Methods for Sustainable Development (MMMS2020) , no. : 565-575.
In the past few decades, a rapid of industrialization increasing the noise pollution and provides a people awareness to combat this issue. Here, apart from providing employment opportunities to worker, manufacturing industry also produce disturbing noise that is generated by various sources especially from the machineries. The aim of this study is to estimate the maximum working hours due to the over exposure of the noise hazard in the industry. Initially, the reading of noise exposure was obtained using the dosimeter. Then, criteria for a recommended standard occupation noise exposure based on NIOSH (1998) and OSHA (1989) noise working safe condition was measured. The results indicate that there is high risk of noise-induced hearing loss (NIHL) among workers that come from the noise exposure was obtained. The critical is CAM & CNC department with less than 0.125 hours and 1.33 hours following NIOSH and OSHA regulation respectively. In addition, the proposedly related noise exposure working period are also included.
M Subramaniam; Mohamad Hassan; Mohd Faizal Sadali; I Ibrahim; Mohd Yusof Md Daud; S A Aziz; N Samsudin; S Sarip. Evaluation and Analysis of Noise Pollution in the Manufacturing Industry. Journal of Physics: Conference Series 2019, 1150, 012019 .
AMA StyleM Subramaniam, Mohamad Hassan, Mohd Faizal Sadali, I Ibrahim, Mohd Yusof Md Daud, S A Aziz, N Samsudin, S Sarip. Evaluation and Analysis of Noise Pollution in the Manufacturing Industry. Journal of Physics: Conference Series. 2019; 1150 (1):012019.
Chicago/Turabian StyleM Subramaniam; Mohamad Hassan; Mohd Faizal Sadali; I Ibrahim; Mohd Yusof Md Daud; S A Aziz; N Samsudin; S Sarip. 2019. "Evaluation and Analysis of Noise Pollution in the Manufacturing Industry." Journal of Physics: Conference Series 1150, no. 1: 012019.
There are many sources of hazardous noise that contributed to the hearing impairment, that resultant from over exposure noise level from workplace. This study examined the contribution of machine that used in the spice manufacturing towards to the employee. Initially, the background noise of each workstation needed to be measured using a sound level meter. Then, monitoring levels including machine noise levels and daily self-reported duration noise exposure to workers was elucidated. A total of 30 workers were identified as having workplace noise exposures. The average noise levels were between 81 and 97 dBA in high and low noise exposure areas, respectively. The average self-reported workplace noise measure time was 8 hours/day. The estimated mean daily noise exposures were calculated from machine noise were found to be higher than the Factories And Machinery (Noise Exposure) Regulations, specifically 90 dBA eight-hour time weighted average (TWA). In addition, 750% of production workers had estimated greater than TWA value exposures. It is therefore recommended that industries either limit workplace use among the production workers or require device and technological advanced to prevent occupational noise-induced hearing loss
P Alagapan; Mohamad Hassan; Mh Ibrahim; Mohd Yusof Md Daud; Na Bani; R M Kutty. Measurement of hazardous personal noise exposure in spice manufacturing industry. Journal of Physics: Conference Series 2019, 1150, 012021 .
AMA StyleP Alagapan, Mohamad Hassan, Mh Ibrahim, Mohd Yusof Md Daud, Na Bani, R M Kutty. Measurement of hazardous personal noise exposure in spice manufacturing industry. Journal of Physics: Conference Series. 2019; 1150 (1):012021.
Chicago/Turabian StyleP Alagapan; Mohamad Hassan; Mh Ibrahim; Mohd Yusof Md Daud; Na Bani; R M Kutty. 2019. "Measurement of hazardous personal noise exposure in spice manufacturing industry." Journal of Physics: Conference Series 1150, no. 1: 012021.
Predictive maintenance (PM) evaluates the condition of equipment by performing periodic or continuous equipment condition monitoring. This paper presents a Weibull statistical approach, in order to determine life cycle of highway street lighting. The historical data that collected from the maintenance checklist record of 250 and 400W street lighting lanterns replacement for 2 years of period were used. Than, two key performance indicators which shape factor, β and characteristic life, η were determined to perform the Weibull probability analysis. The findings show that estimation of mean time to failure (MTTF) for 250 and 400 watt bulb are 4009.30 and 5043.36 hours period of operation respectively.
M. S. Ibrahim; Mohamad Hassan; I. Ibrahim; Mohd Yusof Md Daud; N. A. Bani; M. H. Ibrahim. Life-cycle Assessment on the Highway Street Lantern using Weibull Probability Approach. Journal of Physics: Conference Series 2019, 1150, 012020 .
AMA StyleM. S. Ibrahim, Mohamad Hassan, I. Ibrahim, Mohd Yusof Md Daud, N. A. Bani, M. H. Ibrahim. Life-cycle Assessment on the Highway Street Lantern using Weibull Probability Approach. Journal of Physics: Conference Series. 2019; 1150 (1):012020.
Chicago/Turabian StyleM. S. Ibrahim; Mohamad Hassan; I. Ibrahim; Mohd Yusof Md Daud; N. A. Bani; M. H. Ibrahim. 2019. "Life-cycle Assessment on the Highway Street Lantern using Weibull Probability Approach." Journal of Physics: Conference Series 1150, no. 1: 012020.
The present study aims to investigate the elastic-plastic behaviour of ultrasonic assisted compression of PVC closed-cell foam. A series of static and ultrasonic compression test of PVC closed-cell foam were conducted at a constant cross head speed of 30 mm/min on dry surface condition. For quasi-static test, specimen was compressed between two rigid platens using universal testing machine. In order to evaluate the specimen behavior under ultrasonic condition, specimen was placed between a specifically design double-slotted block horn and rigid platen. The horn was designed and fabricated prior to the test as a medium to transmit the ultrasonic vibration from the ultrasonic transducer to the working specimen. It was tuned to a frequency of 19.89 kHz in longitudinal mode and provided an average oscillation amplitude at 6 µm on the uppermost surface. Following, the characteristics of stress-strain curves for quasi-static and ultrasonic compression tests were analyzed. It was found that the compressive stress was significantly reduced at the onset of superimposed ultrasonic vibration during plastic deformation.
N. A. D. Muhalim; Mohamad Hassan; Mohd Yusof Md Daud. Elastic-Plastic Behaviour of Ultrasonic Assisted Compression of Polyvinyl Chloride (PVC) Foam. IOP Conference Series: Materials Science and Engineering 2018, 344, 012009 .
AMA StyleN. A. D. Muhalim, Mohamad Hassan, Mohd Yusof Md Daud. Elastic-Plastic Behaviour of Ultrasonic Assisted Compression of Polyvinyl Chloride (PVC) Foam. IOP Conference Series: Materials Science and Engineering. 2018; 344 (1):012009.
Chicago/Turabian StyleN. A. D. Muhalim; Mohamad Hassan; Mohd Yusof Md Daud. 2018. "Elastic-Plastic Behaviour of Ultrasonic Assisted Compression of Polyvinyl Chloride (PVC) Foam." IOP Conference Series: Materials Science and Engineering 344, no. 1: 012009.
Seawater salinity has been associated with the reduction of polymer structure durability. The aim of this study is to investigate the change in thermal degradation of fiber reinforced epoxy composite due to the presence of seawater. Carbon fiber, carbon/kevlar, fiberglass, and jute that reinforced with epoxy resin was laminated through hand-layup technique. Initially, these specimen was sectioned to 5×5 mm dimension, then immersed in seawater and distilled water at room temperature until it has thoroughly saturated. Following, the thermal degradation analysis using Differential Scanning Calorimetry (DSC), the thermic changes due to seawater infiltration was defined. The finding shows that moisture absorption reduces the glass transition temperature (Tg) of fiber reinforced epoxy composite. However, the glass transition temperature (Tg) of seawater infiltrated laminate composite is compareable with distilled water infiltrated laminate composite. The carbon fiber reinfored epoxy has the highest glass transition temperature out of all specimen.
Mohd Haziq Izzuddin Bin Ibrahim; Mohamad Hassan; Ikhwan Ibrahim; Ahmad Hadi Mohamed Rashidi; Siti Fadzilah M. Nor; Mohd Yusof Md Daud. Seawater infiltration effect on thermal degradation of fiber reinforced epoxy composites. NANOSCIENCE AND NANOTECHNOLOGY: NANO-SciTech 2018, 1958, 020006 .
AMA StyleMohd Haziq Izzuddin Bin Ibrahim, Mohamad Hassan, Ikhwan Ibrahim, Ahmad Hadi Mohamed Rashidi, Siti Fadzilah M. Nor, Mohd Yusof Md Daud. Seawater infiltration effect on thermal degradation of fiber reinforced epoxy composites. NANOSCIENCE AND NANOTECHNOLOGY: NANO-SciTech. 2018; 1958 (1):020006.
Chicago/Turabian StyleMohd Haziq Izzuddin Bin Ibrahim; Mohamad Hassan; Ikhwan Ibrahim; Ahmad Hadi Mohamed Rashidi; Siti Fadzilah M. Nor; Mohd Yusof Md Daud. 2018. "Seawater infiltration effect on thermal degradation of fiber reinforced epoxy composites." NANOSCIENCE AND NANOTECHNOLOGY: NANO-SciTech 1958, no. 1: 020006.
S.A.H. Roslan; Mohamad Hassan; Z.A. Rasid; S.A. Zaki; Mohd Yusof Md Daud; Sa'Ardin Abdul Aziz; S. Sarip; Z. Ismail. Mechanical properties of bamboo reinforced epoxy sandwich structure composites. International Journal of Automotive and Mechanical Engineering 2015, 12, 2882 -2892.
AMA StyleS.A.H. Roslan, Mohamad Hassan, Z.A. Rasid, S.A. Zaki, Mohd Yusof Md Daud, Sa'Ardin Abdul Aziz, S. Sarip, Z. Ismail. Mechanical properties of bamboo reinforced epoxy sandwich structure composites. International Journal of Automotive and Mechanical Engineering. 2015; 12 ():2882-2892.
Chicago/Turabian StyleS.A.H. Roslan; Mohamad Hassan; Z.A. Rasid; S.A. Zaki; Mohd Yusof Md Daud; Sa'Ardin Abdul Aziz; S. Sarip; Z. Ismail. 2015. "Mechanical properties of bamboo reinforced epoxy sandwich structure composites." International Journal of Automotive and Mechanical Engineering 12, no. : 2882-2892.
This study presents the response of kenaf/epoxy corrugated sandwich structure during quasi-static test. Force-displacements curves have been deducted to determine the deformation pattern and collapse behavior of the structure. Kenaf/epoxy sandwich structures skins fabricated by using hand layup technique and the corrugated core were moulded by using steel mould. Different thicknesses of corrugated core web with two sizes of kenaf fibers were used. The corrugated core is then bonded with the skins by using poly-epoxy resin and has been cut into different number of cells. The specimens then tested under tensile and compression at different constant speeds until the specimens fully crushed. Tensile tests data showed the structure can be considered brittle when it breaking point strain, ε less than 0.025. In compression test, the specimens fail due to dominated by stress concentration that initiated by prior cracks. Also, the specimens with more number of cells and thicker core web have higher strength and the ability to absorb higher energy.
S Bakhori; Mohamad Hassan; Mohd Yusof Md Daud; S Sarip; N Rahman; Z Ismail; Sa'Ardin Abdul Aziz. Mechanical behavior of Kenaf/Epoxy corrugated sandwich structures. IOP Conference Series: Materials Science and Engineering 2015, 100, 012011 .
AMA StyleS Bakhori, Mohamad Hassan, Mohd Yusof Md Daud, S Sarip, N Rahman, Z Ismail, Sa'Ardin Abdul Aziz. Mechanical behavior of Kenaf/Epoxy corrugated sandwich structures. IOP Conference Series: Materials Science and Engineering. 2015; 100 (1):012011.
Chicago/Turabian StyleS Bakhori; Mohamad Hassan; Mohd Yusof Md Daud; S Sarip; N Rahman; Z Ismail; Sa'Ardin Abdul Aziz. 2015. "Mechanical behavior of Kenaf/Epoxy corrugated sandwich structures." IOP Conference Series: Materials Science and Engineering 100, no. 1: 012011.
This paper proposes a conceptual framework for measuring CNC Machining skill of diploma level technical students. This framework describes CNC machining skills and the relevant concepts, theories, and variables of machining skill development to prepare students to become a CNC Machinist or CNC Technician. The framework is based on three primary phases: a) input phase based upon the literature review, b) process phase based upon the rationales consolidated from the input phase which includes data collection and analysis, and c) output phase which is to establish the core and supporting tasks needed in a job. The framework can be used to guide the development of an educational or training program in CNC Machining Technology. It can also provide feedback to instructors seeking to improve the effectiveness of technology training. This is in alignment with the National Occupational Skill Standard (NOSS) which describes the knowledge, skills and abilities required to perform machining tasks in the industry.
Shahril Bin Noh; Mohd Yusof Md Daud; Rosmah Binti Ali. Conceptual Framework for Development of an Instrument to Measure Students' CNC Machining Skill. 2014 International Conference on Teaching and Learning in Computing and Engineering 2014, 182 -185.
AMA StyleShahril Bin Noh, Mohd Yusof Md Daud, Rosmah Binti Ali. Conceptual Framework for Development of an Instrument to Measure Students' CNC Machining Skill. 2014 International Conference on Teaching and Learning in Computing and Engineering. 2014; ():182-185.
Chicago/Turabian StyleShahril Bin Noh; Mohd Yusof Md Daud; Rosmah Binti Ali. 2014. "Conceptual Framework for Development of an Instrument to Measure Students' CNC Machining Skill." 2014 International Conference on Teaching and Learning in Computing and Engineering , no. : 182-185.
The current study is presented into the investigation of the application of ultrasonic vibration on the lower punch during compaction process of powder metallurgy material. The lower punch is specifically designed of ultrasonic horn which has been tuned at frequency of 20 kHz and vibrates in longitudinal mode. Finite Element modeling was used to assist the design process of the lower punch or horn. The horn was fabricated using high grade aluminium alloy and mounted onto the ultrasonic system test rig and subsequently tested prior the experimental process begins. Various static and ultrasonic compaction procedures have been carried out to confirm the capability of the tool to operate. The compaction force was reduced significantly at the onset of ultrasonic vibration applied compared to without ultrasonic.
Mohd Yusof Md Daud; N.A. Raman; Sa'Ardin Abdul Aziz; K.R. Jamaludin. Design of Ultrasonic Compaction Tool for Powder Metallurgy. Applied Mechanics and Materials 2013, 465-466, 1016 -1020.
AMA StyleMohd Yusof Md Daud, N.A. Raman, Sa'Ardin Abdul Aziz, K.R. Jamaludin. Design of Ultrasonic Compaction Tool for Powder Metallurgy. Applied Mechanics and Materials. 2013; 465-466 ():1016-1020.
Chicago/Turabian StyleMohd Yusof Md Daud; N.A. Raman; Sa'Ardin Abdul Aziz; K.R. Jamaludin. 2013. "Design of Ultrasonic Compaction Tool for Powder Metallurgy." Applied Mechanics and Materials 465-466, no. : 1016-1020.
Enterprise Resource Planning (ERP) system is integrated software that linked the functional areas in the organization by using and sharing the database in one platform. The implementation of ERP system in most of the manufacturing plants help in simplifying the production and scheduling system and smoothing the process flow which will lead the organisation towards lean manufacturing environment. Most of the manufacturers do not analyse and review on the effectiveness and implications of the ERP system at the post implementation stage. This study was established to address the impacts of the ERP system in leveraging the lean practices at the shop floor and the recommendations for the continuous improvement initiatives. Data for analysis has been retrieved from in house ERP system and from manual record system of a company that already implemented ERP system. Questionnaires have been distributed to ERP users within Malaysia and Singapore to gain insight the related issue of using ERP system in their company. The study provides evidence on the effectiveness and positive impacts of the ERP system to support manufacturing industries to become more lean and agile. ERP system also effectively to response to the customer requirement and added the value along the supply chain.
Pang Chee Kong; Mohd Yusof Md Daud. Effectiveness of Enterprise Resource Planning System in Supporting the Lean Manufacturing. Applied Mechanics and Materials 2013, 315, 899 -904.
AMA StylePang Chee Kong, Mohd Yusof Md Daud. Effectiveness of Enterprise Resource Planning System in Supporting the Lean Manufacturing. Applied Mechanics and Materials. 2013; 315 ():899-904.
Chicago/Turabian StylePang Chee Kong; Mohd Yusof Md Daud. 2013. "Effectiveness of Enterprise Resource Planning System in Supporting the Lean Manufacturing." Applied Mechanics and Materials 315, no. : 899-904.
Drilling the medium density fiber (MDF) board always emerge the occurrence of delaminating, as the unwanted result of the process. The defect will moderate the aesthetical value of the finished products particularly if the product is a furniture product. This work optimizes the control factor of delamination using robust engineering technique founded by Genichi Taguchi, father of robust engineering. The optimum drilling parameter which based on smallest the better is optimized and it is confirmed by the confirmation experiment that the imperfections is minimized. Three control factors are investigated in the study: feed rate, cutting speed, and drill bits diameter. The response plot of the control factor shows a drill bit diameter is the highest contributing control factor that influences delaminating as the different of the robustness is 2.047 dB. The optimum parameter shows that the variability of the noise factor is improved as compared to the initial parameter by means of the dB gain of 1.308 dB and 1.451 dB for the prediction and confirmation respectively. The robust assessment of the optimization has indicates that the drilling parameter is less sensitive to the noise factor.
Khairur Rijal Jamaludin; Mohd Shahriman Adenan; Mohd Yusof Md Daud; Norazmein Abd Raman. Delaminating Control on Drilling the Medium Density Fiber Board with Robust Optimization. Jurnal Teknologi 2012, 59, 1 .
AMA StyleKhairur Rijal Jamaludin, Mohd Shahriman Adenan, Mohd Yusof Md Daud, Norazmein Abd Raman. Delaminating Control on Drilling the Medium Density Fiber Board with Robust Optimization. Jurnal Teknologi. 2012; 59 (2):1.
Chicago/Turabian StyleKhairur Rijal Jamaludin; Mohd Shahriman Adenan; Mohd Yusof Md Daud; Norazmein Abd Raman. 2012. "Delaminating Control on Drilling the Medium Density Fiber Board with Robust Optimization." Jurnal Teknologi 59, no. 2: 1.
Sintering is a key step in the metal injection molding (MIM) process, which affects the mechanical properties of the sintered part. The mechanical properties of the sintered compacts are resulted from tremendous sintered part densification. This work utilizes robust engineering technique in optimizing sintering parameters of metal injection molding compacts. Three quality characteristics; shrinkage, density and flexure strength is optimized using Taguchi method-based grey analysis. The modified algorithm adopted here was successfully used for both detraining the optimum setting of the process parameters and for combining multiple quality characteristics into one integrated numerical value called grey relational grade. The sintering parameters investigated are: sintering temperature, sintering time, and heating rate. The result concluded that sintering time is the most significant for the combination of the quality characteristics.
Khairur Rijal Jamaludin; Norhamidi Muhamad; Sufizar Ahmad; Mohd Halim Irwan Ibrahim; Nor Hafiez Mohd Nor; Mohd Ruzi Bin Harun; Mohd Yusof Md Daud; Muhamad Norhamidi. Optimizing the Sintering Parameter of Metal Injection Molding Compact Using Robust Engineering Technique. Advanced Materials Research 2012, 445, 357 -361.
AMA StyleKhairur Rijal Jamaludin, Norhamidi Muhamad, Sufizar Ahmad, Mohd Halim Irwan Ibrahim, Nor Hafiez Mohd Nor, Mohd Ruzi Bin Harun, Mohd Yusof Md Daud, Muhamad Norhamidi. Optimizing the Sintering Parameter of Metal Injection Molding Compact Using Robust Engineering Technique. Advanced Materials Research. 2012; 445 ():357-361.
Chicago/Turabian StyleKhairur Rijal Jamaludin; Norhamidi Muhamad; Sufizar Ahmad; Mohd Halim Irwan Ibrahim; Nor Hafiez Mohd Nor; Mohd Ruzi Bin Harun; Mohd Yusof Md Daud; Muhamad Norhamidi. 2012. "Optimizing the Sintering Parameter of Metal Injection Molding Compact Using Robust Engineering Technique." Advanced Materials Research 445, no. : 357-361.
Finite element (FE) model of die necking process of an aluminium hollow thin cylinder has been developed. The input parameters of material properties and coefficient of friction, µ for the model have been deducted from our previous experimental study. Later the models have been validated against experimental data as reported in the previous studies. For the die necking process, the FE model has successfully to predict how much the original diameter of the aluminium hollow cylinder can be maximised necked with and without applying ultrasonic vibration. FE models showed that the application of ultrasonic vibration during the necking process has reduced buckling of the cylinder body if compared to the necking process without ultrasonic. The benefit of applying ultrasonic vibration in sheet metal forming process has been related to the reduction of interface friction between die and specimen.
Mohd Yusof Md Daud; Margaret Lucas; Khairur Rijal Jamaludin. Finite Element Modelling in Ultrasonic Sheet Metal Forming. Advanced Materials Research 2012, 445, 3 -8.
AMA StyleMohd Yusof Md Daud, Margaret Lucas, Khairur Rijal Jamaludin. Finite Element Modelling in Ultrasonic Sheet Metal Forming. Advanced Materials Research. 2012; 445 ():3-8.
Chicago/Turabian StyleMohd Yusof Md Daud; Margaret Lucas; Khairur Rijal Jamaludin. 2012. "Finite Element Modelling in Ultrasonic Sheet Metal Forming." Advanced Materials Research 445, no. : 3-8.