Displaying publications 1 - 20 of 75 in total

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  1. Azlan Aziz, Azizi Mursyidi, Rozimah Tahir, Nurul Ajleaa Abdul Rahman
    MyJurnal
    The measurements of dielectric and thermal properties for bio composite substrate conducted between the mixture of polypropylene (PP) and saw dust filler Leucaena Leucocephala (150μm). The high temperature Agilent 85070E dielectric probe and Quickline 30 Thermal properties analyser used as an instruments to measure the dielectric properties (εr) and handling temperature of the substrate for frequency range of 1GHz to 20 GHz that are suitable for radio frequency applications. The effect of increasing wood filler indicated that it will raise the DK value from 1.84 to 2.49 and decreases the thermal conductivity behaviour from 0.2 to 0.11w/m.k for all 5 mixture fabricated substrate (PP100, PB9010, PB8020, PB7030 and PB6040). In this research the composition of PP must be greater than the sawdust filler due to PP act as laminating and hold the composite structure. The result presented on this research will useful for planar antenna and microwave filter substrate up to frequency 20 GHz and it could support the technical and vocational education tanning (TVET) learning process that hybrid the knowledge among different field.
  2. Madya Mastika binti Ahmad, Amirah binti Mohd Arif
    MyJurnal
    In this day and age, with the ever-growing population and energy demand, we should take the renewable option route in our energy source. We should also keep in mind that said energy should not cause any lasting environmental damage, one of the perfect example being solar energy. A country that is hot and sunny all year long is the perfect contributor to solar energy, case in point, Malaysia. With that in mind Solar Tree is designed and developed to facilitate consumers who need electric power at any place, anytime, anywhere. The objective of this study is to assess a mini project in the likes of Solar Tree that can generate electricity without harming the environment, despite the weather. Intended specifically to be a mini project, it is understandable that electricity generated is limited, with only up to 500W in total. As a trial, two electronic devices were tested, specifically a mobile phone and a laptop, as both devices are used almost every day. The data collected is then tabulated and analysed. It was concluded the solar tree developed proved efficient in charging both devices and will continue to do so given enough sunlight.
  3. Zarinah Zaini, Tuty Kamis, Faudzi Muhammad
    MyJurnal
    Sustainability is a worldwide objective in balancing the gradual rise of human requirements and the decay of resources. In further aspect, the conceptual paper studies the sustainability performance of new techniques to control sewage contamination in order to prevent foul odors into the habitable space from drainage network, which is important for the healthiness and comfort of living environment. Waste drain pipe is a prominent facility in service engineering development and it is essential in regulating sewage contamination that is commonly obstructed by ungoverned disposal of debris by domestics and commercial buildings. This act is common and consistent in arising disturbance causing the failure of sewage management. This research emphasizes on the innovative establishment of a new controlling method upon sewage contamination known as Black Air Gun (BAG); this indicator is operated based on Perceived Sustainability Performance Indicators (PSPI). This indicator functions to evaluate the impact of BAG upon sewage contamination control. Furthermore, PSPI can acknowledge the sustainability issue of BAG usage in sewage management as a basis for evaluating the impact of BAG towards sewage contamination control. Adopting PSPI in this study will effectively provide a sustainable establishment attained for improvement of people’s quality of life in long term aspects.
  4. Nor’ain Senin, Noorhidayah Ramli, Mai Noor Asiah Tan Zalilah
    MyJurnal
    A new innovation has been created which is called AUTOMATIC MEAT SLICING (AMS) MACHINE. The main purpose of the machine creation is to replace the old-style method in slicing the chicken meat to modern method. BABARITTOS DELIGHT supplies Tortillas Wrap to the latest trend of Food & Beverage (F&B) business called Food Truck. The main ingredient of Burritos is slices of boneless chicken meat, where each slice is approximately has to be 5 mm thick. Formerly, the slicing procedure used a normal cutting knife and its production rate was truncated as the demands of the Burritos are going higher by days. This method requires 3 to 4 workers to team up to complete the 30 kg boneless chicken meat to be cut into roughly 5 mm per slice within one and half hour. The AMS machine is predominant to help the company to grow the output of sliced meat and at the same time can reduce the number of workers. The usage of AMS machine is only required one worker for the operation and the output can be up to 30kg per 30mins, which is actually can end up almost 3 times quantity of output and 3 times labor cost-saving. Meanwhile the quality of the sliced meat is much enhanced as most of the slice meat is precisely 5mm thick. The AMS concept design is cutting the meat using several circular cutting blades, where the chicken will be put on the moving conveyor and finally will fall onto the hygienic tray.
  5. Norisza Dalila Ismail
    MyJurnal
    Aero Intel mobile application (mobile app) is an interactive learning application which is specific to aircraft airframe providing information to help aircraft maintenance engineering students. The objective for this study is to investigate students’ perceptions towards Aero Intel mobile app. Quantitative study using questionnaires have involved 78 respondents of semester 1 students of Diploma Engineering of Aircraft Maintenance from Politeknik Banting Selangor. The questionnaires constructed about ownership of smartphone, frequency use of type of apps, are they interested to download educational app and most importantly, students’ perceptions after exploring the Aero Intel mobile app. All respondents owned smartphones and 97.4% interested to use apps for academic purposes. The data obtained were analyzed using Statistical Package for Social Science (SPSS). The finding results revealed the students have positive perception towards Aero Intel mobile application. Thus, the use of this application is expected to help students’ understanding in aircraft airframe and various feedbacks given to encourage educator as the developer to explore and improving development of mobile app for diverse needs in teaching and learning.
  6. Izwan Hamid, Sharuddin Mohd Dahuri, Syed Fahmi Syed Putra
    MyJurnal
    This paper is about the reduction of the overall size of metal blanking sheet that is being used to form a stamping product or car body panel of a car manufacturer in Malaysia. The current blanking sheet produces extra waste which will be recycled and does not contribute to increase productivity but increases inventory cost. The reduction in the blanking sheet size will lead to the reduction of raw material hence reduced the production cost. However, the reduced size of blanking sheet could affect the yield strength of the product. The study of the yield strength and yield improvement of the product are done by simulating stress analysis by using CATIA software. The results show that the new proposed size of the metal blanking sheet provides accuracy of the product dimension as well as maintaining the yield strength of the product and it reduced a significant amount of metal scrap which is nearly 4% of material weight and save around 10% of inventory cost.
  7. Muhamad Sani bin Buang, Zalaida bt Talib, Dr Norhayati bt. Zakaria, Dr Shahrul Azam bin Abdullah, Hashim bin Abdullah
    MyJurnal
    The use of advanced high strength steels as a metal in sheet metal forming in automotive industry currently has been increased where Advanced High Strength Steel (AHSS) especially Dual Phase (DP590) Steels have gained a great attention due to a combination of high strength and good formability. However, one of the major constraints in forming AHSS is the occurrence of high spring back caused by elastic relaxation after loading, which causes illness-fitting in part assembly and geometric deviation of the intended design. Spring back is the main problem of defect that occurs at sheet metal after the bending process which creates problems for the parts during the assembly. This paper presents an investigation the effect of spring back on bending test of Dual Phase Steel (DP590). Punch travel and thickness are among factors affecting the spring back behavior. Various parameter value; punch radius (5mm), die radius (5mm), die gap (70mm), thickness of specimen 1mm and 2mm, punch travel/stroke (25%, 50%, 75%, 100%) from 20 mm depth, punch speed (2mm/min) and Orientation of sheet cutting, which is in rolling (00°),diagonal (45°) and transverse (90°). From the analysis of V-bending test punch travel, thickness and orientation of sheet cutting are significant factor that affecting the spring back phenomena. The result form this experiment could be useful for design engineers and manufacturing engineers to make improvement of predict the spring back behavior and also to understanding the material properties of AHSS in order to eliminate spring back and achieve good final product.
  8. Md Razak Daud, Wan Nor Shela Ezwane Wan Jusoh, Syahrullail Samion
    MyJurnal
    This study investigates metal removal rate (MRR) of the biomaterial by using discharge machine Neuar CNC A50 Electrical Discharge Machine Die Sinking (EDM DS). The purpose of this study is to compare machining curvature cup for material SKD 11 and stainless steel with shape curvature cup acetabular. The result showed that electrode wear is higher when high current is applied. For each applied current 0.5A and 3.0A could result electrode wear of 0.236 mm, 0.246 mm and 0.269 mm respectively. Mean time of complete discharged for each pit with 0.3mm depth with supply 0. 5A is 6.51 minutes; 1. 5A is 3.54 minutes and 3A is 1.52 minutes. The biggest mean parameter of the pit is 0.356 mm, with 3A of current is applied. From this study, it can be concluded that low current set may give lower electrode copper wear. The experiment will help a researcher to discharge biomaterial types of metal with small size of copper electrode use of EDM DS Neuar for discharge multi hole or micro pit.
  9. Wan Nor Shela Ezwane Wan Jusoh, Md Razak Daud
    MyJurnal
    Energy consumption is an important part of life today because without the power a work cannot be done. The energy used today will be lost or waste without renewable energy or power recycle back. In reality, energy use has always had a noticeable impact on the environment. Overconsumption of energy is the main trigger for the global warming that is now threatening to cause devastation in many areas of the world. Each year, electricity consumption in Malaysia is always an increase. This can contribute to the occurrence of global warming. This project will be designed for renewable energy or recycle power to avoid waste of energy from lost. Also, this project consider regarding the Green Technology without polluting the environment. The objective is to develop a prototype or hardware that aims to renewable energy using the 12V DC Motor as a generator which is use rear shaft of table fan as a medium to drive the 12V DC Motor and also to analyze the power consumption of table fan before and after install with hardware. The methods used to design the connector and DC motor holder is using a solidwork software, then construct the circuit simulation using a proteus software and also use a microcontroller PIC16F877A as a controller. The result obtained from the testing and experiments by integrating the hardware part, electrical part and software part. Finally, with the development of a power recycling prototype for renewable energy using DC Motor application, the wasted energy can be reused from conversion to other energy and energy can be used as renewable energy.
  10. Harisun Ya’akob, Lim, Jin Ru, Nur Athirah Hashim
    MyJurnal
    The changing trend towards the use of natural ingredients in product formulation has becoming very significant nowadays. Herbal products have gained increasing popularity in the last decade, and are now used by approximately 20% of the population and contribute to the health care of our people. The natural products global trade is projected to be over RM2 trillion by the year 2020 as more people are turning to herbal-based products as nutritional and dietary supplements; an alternative to the conventional therapeutic medicine. Therefore it is hoped that the utilisation of natural ingredients could be capitalised for the mass production of herbal based products. Malaysian herbal product market is experiencing tremendous growth. Malaysia's rich tropical biodiversity is a reliable source for natural health products, and the Government is now addressing its full potential. Although herbs are often perceived as “natural” and therefore safe, many safety issues and side effects have been reported owing to active ingredients, contaminants, or interactions with modern drugs. Before herbal-based products are commercialized, several processes/steps which are critical aspects of the development and marketing of product must be addressed. Thus, there is an urgent need to conduct experimental research to provide scientific evidence in terms of safety, efficacy and quality of herbal medicines. In addition the plants as sources for new lead structure for drug development especially the active compounds that are beneficial for human health requires further investigation.
  11. Khamis, N.K., Deros, B.M
    MyJurnal
    Driving posture is important to determine the comfortability of the driver. The purpose of this study is to investigate the muscle response in car pedal operation. To evaluate this response, 11 volunteers involved in simulated driving experiment using an electrical impedance myography to detect the muscle contraction of the lower leg, particularly at Gastrocnemius medial (GM). The driver requires to perform different pedal actions. The results depict that GM muscle shows different reaction according to pedal actions. According to these results, different degree of ankle angle lead to different muscle response. These findings help us to understand the effect of physical attribute related to muscle response and joint angle on driver during monotonous driving task.
  12. M. Hafiz, C.M.Salmi, M.Kamarol, M.Mariatti
    MyJurnal
    Nowadays Silicone Rubber (SiR) is recommended in high voltage cable accessories fabrication as it offers excellent electrical and mechanical properties. Electrical tree is one of the phenomenon which contributes to the main factor of SiR insulation breakdown. Recently, a new approach has been applied in order to enhance the insulation strength properties by introducing nano filler in undoped material. Thus, this paper presents the influence of nano-alumina and halloysite nanoclay on electrical tree growth in SiR at 0, 1 vol%, 2 vol% and 3 vol% concentration. The electrical tree growth was investigated at 8kVrms after tree inception voltage (TIV) within 30 minutes under room temperature. The results show reductions of electrical tree growth speed and accumulate damage (%) up to 2 vol% nano-alumina and up to 3 vol% halloysite nanoclay. Nevertheless the presence of 3 vol% nano-alumina in SiR leads to the faster electrical tree growth rate and the worst accumulate damage within 1 minute of electrical tree growth process.
  13. Rajamanickam, Segar, Rasappan, Rasammal, Noazri Bin Bakhari
    MyJurnal
    In this research, study on mutual coupling of aperture coupled cylindrical DRA and its influence on return loss, radiation pattern including the directivity, gain and bandwidth was computed and illustrated. The DRA was excited by a micro strip line with aperture coupled slots where the slot locations were calculated using the characteristic of standing wave ratio over a short ended micro strips. Small dielectric resonator antenna was designed using high permittivity dielectric material with permittivity the substrate of 3.38. The diameter of the dielectric resonator is 12mm with the height of 4.2mm. The element spacing that been investigated for the effect of mutual coupling was at 0.5λ, 0.75λ and 1λ with maximum of four DRA been used. The final result shows the effect of mutual coupling is decreased with three DRA element with the gain measured at 5.948GHz frequency is about 8.619dB with high directivity measured at 11.4dBi. This shows that the proposed DRA with three 1λ spacing DRA elements exhibits an enhancement of the gain and directivity in comparison with a single pellet DRA. Hence, by increasing the level of isolation between the two identical DRAs to 1λ it actually helps electromagnetic interaction to attract and further increase the directivity and effective area.
  14. Safpbri Johari, Muhammad Abdul Jalil, Shaifol Ifrad Ibrahim, Mohd Nazry Mohammad, Norhafiza Hassan
    MyJurnal
    Recently, the industry and academia there is significant activity in research and development towards the next generation micro and Pico cellular wireless Networks (5th generation). This paper presents, a structure design of microstrip patch antenna array operate at the central frequency of 28 GHz waveband is proposed. The patch antenna array consists of four elements with rectangular patch and uniform distribution. It has a compact size of 26.51 x 20.37 mm with operating frequency at 28 GHz. The inset feed technique is used for the matching between radiating patch and the 50Ω microstrip feedline. The proposed 2x2 antenna array successfully improve the antenna gain up to 8.393dB compare to existing CRLH TL CPW antenna with 2.99 dB, wideband antenna with 7.1 dB and 3.7 dB for broadband elliptical-shaped slot antenna. As a conclusion, the directivity of 10.13 db and efficiency is higher than 80% considered as a potential candidate for the 5G wireless networks and applications.
  15. J.Karim, M.A.M.Idrus, N.H.F.Hashim, M.Abdullah, S.S.Sharifuddin, M.F.Muhazeli, et al.
    MyJurnal
    Rivers as surface water in Malaysia are recipients of effluents and wastewater and yet it is important water source for daily uses of some villagers living along the river. Endocrine disruptors such as Bisphenol A (BPA) can be found in river due to continuous discharge into it. The objectives of this research is to find out the occurrence and concentration of BPA in Sungai Langat and also to see how water quality parameters such as temperature, pH, dissolved oxygen (DO), turbidity, Total Suspended Solid (TSS), Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD) and ammonia nitrogen (AN) affecting the concentration of BPA. 12 stations in total including upstream to downstream of Sungai Langat and also tributary of Sungai Langat. The instrument used to find out concentration of BPA is Triple Quadrupole LC/MS. The source of BPA are mainly industrial effluents and also direct domestic discharges. The water quality parameters that will affect concentration of BPA are Ammonia Nitrogen (AN), turbidity, Biochemical Oxygen Demand (BOD), Total Suspended Solid (TSS), and Chemical Oxygen Demand (COD), Dissolved Oxygen (DO). While pH and water temperature are also factors that will affect concentration of BPA but the significance is not shown in the analysis. It can be concluded that upstream of Sungai Langat has lower concentration of BPA than downstream.
  16. N. I. Ismail, Mahadzir M. M., Hasnul A, M. Arif Alias, A. A. Shariffuddin, N.I. Kamel
    MyJurnal
    Unmanned air vehicles (UAV) have been used for many years and it mainly focus on military purposes. Numerous UAV development have been popular worldwide because the low in development cost, operating cost and ability to provide accurate surveillance information and it is a better option for performing reconnaissance missions in hostile environment. However, in the past years a new type of UAV has appeared that possessed lighter weight and smaller in size and it is categorized as a micro unmanned air vehicle (μ-UAV). Although the non-autonomous ready-to-fly tailless μ-UAV exists among local universities, the development of non-autonomous ready-to-fly tailless μ-UAV is still open to be explored. Thus, this project demonstrates the development of the non-autonomous ready-to-fly tailless μ-UAV named as Neo-Ptero. A special CNC hot wire cutter machine was used in the Neo-Ptero fuselage and wing development in which has evidently produced high accuracy of shapes and geometry based on the CAD design. A 3D printing process was used to produce few parts in the Neo-Ptero μ-UAV model. The model was equipped with on shelves RC components for future flight testing purpose. The actual Neo-Ptero weigh around 1.3kg and has a wingspan of 120.6cm.
  17. Ros Syazmini Mohd Ghani, Razak Wahab, Noor Maisarah Che Musthafa, Nasihah Mokhtar, Mohamad Saiful Sulaiman, Lee, Man Djun
    MyJurnal
    The study was carried out to determine the physical and mechanical properties of composite lumber made from cassava (Mahinot esculenta Crantz) and bamboo (Bambusa vulgaris) in different ratios which is 100% cassava with 0% bamboo, 75% cassava with 25% bamboo, 50% cassava with 50% bamboo, 25% cassava with 75% bamboo and 0% cassava with 100% bamboo. The tests samples for determining the strength properties were divided into two categories namely mechanical testing and physical testing. Basic density of the samples was carried out for physical testing. The lowest basic density was in samples with 100% cassava which is 0.49 g/cm3 and highest in samples with 100% bamboo which is 0.68 g/cm3. Two tests for the mechanical testing are bending test and compression test. In bending test, modulus of elasticity (MOE) and modulus of rupture (MOR) were both highest for samples with 100% bamboo which the reading of MOE was 16794.03 N/mm2 and 122.52 N/mm2 for MOR. Similar to the bending test, compression test is the highest for the samples with 100% bamboo which are 65.58 N/mm2. From statistical analysis, the basic density, static bending can compression strength give significant value at 95% confidence interval.
  18. Nadia Abdul Rani, Faieza Abdul Aziz, Rohidatun M,W.
    MyJurnal
    Interactive learning is a pedagogical model that encourages students to be part of the lesson instead of passive observers, quietly sitting at a desk taking notes or memorizing information. Students interact with the material, each other and the teacher in an active way. The new emerging technologies that can overcome some of the potential difficulties in this area includes computer graphics, augmented reality, computational dynamics, and virtual worlds. Therefore, the manufacturing industry relies on new design concepts and methods undertake the challenges in integrating technologies to expedite the march towards industrial revolution 4.0.This paper reviews and investigates the current context of the use of interactive learning such as Virtual Reality(VR),Augmented Reality(AR),Computer aided design and manufacturing(CADCAM), computer graphics, computational dynamics and new emerging technologies that effect on students and lectures in learning and teaching environments for Manufacturing Engineering. Interactive learning is part of the factors that could influence the self-learning and regulations environments.
  19. Win, Lai Lai, Faieza Abdul Aziz, Abdul Aziz Hairuddin, Lili Nurliyana Abdullah, Jen, Yap Hwa, Saito, Hideo, et al.
    MyJurnal
    Education needs to change working life in order to improve and ensure the latest technology has been adopted to cater the new era of industrial revolution. To reach this, a technological-oriented education is required for students. In this section, Virtual Reality (VR) technology is useful to get empirical experience in tertiary education. Moreover, virtual world provides a hazard-free and explorative learning experience. This paper reviews the application of VR in engineering education. This work also covers the usage of VR application which begins with the history of VR application, reasons of VR in education, key elements for immersive VR collaboration, and types of VR systems. The input / output devices which involved in VR systems were also discussed. This paper also reviews VR systems classification and usage of VR in education systems. VR in design application was finally reviewed followed by the advantages and disadvantages of VR systems and VR hardware. The last section provides future trends and conclusion.
  20. ?Lokhman Hakim Osman
    MyJurnal
    Responding to demands for transformed networking practices requires new forms of knowledge. Given their scale and complexity, networking problems can no longer be solved by way of extending intermediaries. Recent research on alternative approaches has focused on the understanding network structures formed by interactions between heterogeneous actors. Rather than linear extensions, network theory highlights cliques structure as a major determinant of performance derives largely from the frequent finding that managers that are embedded with influential connections are at increased likelihood of becoming influential themselves thus opening rooms for new knowledge and innovative technology and practices. It is suggested that the strong and consistent cliques are at least partially responsible to managing network complexity. This paper contributes to our understanding of such facilitation by investigating the networks in which managers exchange information. We report findings based on the study of managers in a maritime industry. Network surveys identified who the managers contacted for inputs and who they had talked to about the information by 6 months earlier. Snow-balling interviews collected farmer statements about their most valuable contacts and these statements have been analysed. The network analysis shows that managers with densely tied and occupationally homogeneous contacts grew their networks more than did managers with contacts that are loosely tied and diverse. The network analysis reveals an important principle: managers’s value knowledge delivered by persons of homogenous connections rather distance ones. It is argued that social network analysis is an appropriate method for studying influence development use in the context of networked organizations.
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