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Irfan Abd Rahim
Preferred name
Irfan Abd Rahim
Official Name
Abd Rahim, Irfan
Alternative Name
Irfan, A. R.
Abd. Rahim., Irfan
Irfan, Abd Rahim
Abd Rahim, Irfan
Rahim, Irfan Abd
Main Affiliation
Scopus Author ID
56500369900
Researcher ID
GMC-2925-2022
Now showing
1 - 10 of 17
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PublicationDesign and Development of Pneumatic Air Engine using Linear Actuator( 2020-07-09)
;Fadzly M.K. ;Maizaty R.Amarul T.A study was performed to produce a pneumatic air engine using two linear actuators and then the linear motion was converted to a rotating motion using a crank shaft. This study aims to increase the use of linear actuators in pneumatic air engines as well as to apply pressurized air as an efficient and convenient transportation mechanism in line with the development of technologies developed through products available in the market. Two units of linear actuator such as pneumatic cylinders with two units of 5/2 way directional control valve with double solenoid actuation are used to control the cylinder movement. The cylinder will rotate the crank shaft when receiving a signal from the solenoid valve with 5 bar air pressure. In conclusion, the system can travel up to 153 meters for a 24-liter air-pressure with 5 bar pressure when the test is run for a charging cycle by the compressor motor. If the compressor motor able to charge the compressor continuously, the movement distance can be increased. -
PublicationInvestigation of Empennage Location Effect to the Unmanned Aerial Vehicle (UAV) Structure Characteristic( 2024)Over the past few decades, unmanned aerial vehicles, commonly known as UAVs, have been widely used in a number of consumer and military applications, such as surveillance, tracking, monitoring, and aerial photography. Fixed-wing and rotary UAVs are the two primary categories in UAV. Interestingly, the hybridization of fixed-wing and rotary UAV gives better performance in terms of energy consumption and the needs of runaway. Designing new hybrid fixed wing-rotary UAV or hybrid vertical take-off and landing (VTOL) is challenging especially to identify the critical location in the UAV and material selection. Therefore, the objective of this research is to study the effect of empennage location and material selection on the structural strength of a hybrid VTOL UAV. The SolidWorks software was employed to design a 3D model of the UAV with different empennage locations, as well as perform a simulation of the structural strength of fibre glass, carbon fibre and kenaf for the hybrid VTOL UAV. The simulation analysis presents stress (Von Mises). The results show that the fibre glass (4.342 N/m2) at top empennage gives the best performance as compared to other parameters. In conclusion, this study is necessary to give a better picture of structural strength of composite materials and best design location in hybrid VTOL UAV for future research.
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PublicationInvestigation performance of heat exchanger on thermoacoustic heat engine for harvesting a waste heat( 2013)
;Md. Saidin Wahab ;Mohd. Zubir YahayaMohd Zarhamdy Md ZainA green technology of acoustic of fluid-structure interactions become an emerging technology today, a call thermoacoustic heat engine. Thermoacoutics heat engine systems convert the energy on a harvesting from a waste heat energy and convert to an electrical energy. That component of devices a call a hot heat exchangers. This paper study was focused on a new design of thermoacoustics heat exchanger and investigation of its performance in terms of thermal analysis. A conceptual design was produced with three designs of hot heat exchangers, which are wire-type, finger-type and star-type. Commercial code ANSYS-CFX software are used on the evaluation, the heat exchanger’s designs were simulated with two thermal conditions which are steady state and transient heat conduction. Materialselection from copper and aluminium a chosen to look-out the engagement between theoretical and numerical study. There are three inlet temperatures that are assumed will be supplied by constant waste heat which are 200°C, 350°C and 500°C.The star-type design has the highest value of heat conduction through a fin heat conduction with copper as a material which is 32.84W. Star-type hot heat exchanger recorded the fastest time to distribute temperature compared to wiretype and fingertype heat exchanger. Result shown the combination between star-type design and copper material will produce a good agreement to design a hot heat exchanger. -
PublicationAnalysis of onion peeler machine using ansys simulation analysis( 2020-11-02)
;Rosli M.F. ;Effendi M.S.M. ;Nasir S.M.Onion is the important cooking ingredients in the world of a cook. The current method to peel an onion is by a traditional method. There are have many effects when using a traditional method such as used by a hand and knife. By using this traditional method, the probability of injured such as sore eyes and hand pain are too high. Beside that, the process also takes a long time if the user needs to peel in the large quantities. The development of onion peeling machine needs to achieve the objective such as increasing the safety, save time and energy of human. The method of use in this project in fabricating this machine is by analysing the source of information data and apply its knowledge in fabricating the onion peeling machine. The method of design is generated with followed the engineering design guided. The final design selection of machine transforms into a 3D drawing using CATIA software. And then, 3D CAD data are analyses using ANSYS CFX simulation software to analyses the flow analysis of the part design. From this result, it will be considered whether it is necessary to make improvements on the machine design to improve the capabilities and effectiveness. -
PublicationNon flow process ultra high temperature (UHT) boiler application to dadih processes( 2019-07-30)
;Mohammad M.A.H. ;Azlida A.The 'dadih' and milk factory is kind of a small factory and it is called as SME (Small and Medium Enterprise). The purpose of visiting to these factories is to find out the main problem faced by the factories currently. Through a series of analysis such as questionnaire, interview and also observation, the problems are found. According to the factories visited, the cooking method by the factories are varies. Some of the factories are using the traditional method which is cooking by using gas stove and some are using semi-automated boiler. However, the boiling point of the traditional cooking method is around 100°C and it is not able to kill the milk spores in the milk products. A high temperature (135°C-150°C) to cook the milk products in short time (3s-5s) is the basic requirement to kill the milk spores in the milk products. The milk spores are the main reason to shorten the life span of the milk products. According to the information provided by the factory, the life span of 'dadih' produced by using the traditional method are very short which is maximum 2 or 3 weeks if it is refrigerated. In other words, if the products are placed in a normal room temperature, it will not last more than 4 hours. The problem is those factories are intended to buy a UHT boiler but the existing boiler in the market is too big and too expensive which is not suitable and affordable by Small and Medium size (SME) companies. -
PublicationPortable Water Cooler with Water Heater Using Thermoelectric and Arduino Uno and Powered Using Power Bank( 2020-07-09)
;Fadzly M.K. ;Aqilah S.N. ;FarizuanThe purpose of this study is to use water cooler and water heater to improve the convenience of the user so that they can use the water cooler and mobile water heater properly and comfortably. This study focuses on how refrigeration and water heaters use thermoelectric pads as a cooling and heating medium. Peltier works when the voltage is flowing from the power bank. The temperature difference on the surface of the processor allows the heat to occur at a fast rate. Arduino uno is used as a voltage regulator and temperature sensor to improve product performance. concept designs are designed, created and evaluated. The final prototype will include some markers that will be used as temperature readings by cooling and heating. Based on the results shown, the prototype can achieve the desired result with optimized energy consumption. When the temperature supplier produces a good temperature, the amount of water temperature will rise and the heat in the water will reach thermal equilibrium until the cold and hot temperatures reach a better minimum. Therefore, the temperatures in the cold and hot areas are more efficient in achieving thermal equilibrium in rising water. -
PublicationDesign for assembly (DFA) analysis of old bicycle tire inflator( 2020-11-02)
;Rosli M.F.This Paper is studied on the assembly problem of old bicycle tire inflator in the early stage of product design. During producing a product, the most important decisions are the final cost of the product. The approach based on Boothroyd Dewhurst methods has been implemented in this study to provide a quantitative measure called the design efficiency based on an analysis of a product. The main focuses of this research are to analyze the current design efficiency of old bicycle tire inflator and improved design efficiency. The product was design by using UNIGRAPHIC NX. The components and manufacturing of the old bicycle tire inflator were undergone alteration with the design for assembly (DFA) and redesigned methods. -
PublicationOptimization parameter effects on the quality surface finish of the three-dimensional printing (3D-printing) fused deposition modeling (FDM) using RSM( 2019-07-30)
;Effendi M.S.M.Fused Deposition Modeling (FDM) is an additive manufacturing technology which is used to print the 3D (Three-Dimensional) object. It has relatively low surface qualities that will affect the performance of the printed part. Thus, this research has been done to analyze the selected parameter effect on the quality surface finish of the 3D printing objects and find the optimum response of processing parameters using Response Surface Methodology (RSM). In order to predict the surface roughness, three parameters have been chosen which are layer thickness, print speed and fill density. The relations among responses and process parameters are determined and their validity is proved using Analysis of Variance (ANOVA). Then, the response surface plots are analyzed to establish main factor effects and their interaction on responses. The confirmation experiment has been carried out with the response optimizer to get the optimum parameter of the surface finish quality. Based on the results obtained, the surface roughness is mainly affected by the layer thickness compared to the fill density and print speed. -
PublicationRedesign of bahulu production layout to improve the efficiency of process flow( 2019-07-30)
;Effendi M.S.M.This research presents the optimum efficiency improvement of process flow by redesigned the production layout using facility planning methods in a company producing traditional cakes which are bahulu that currently have bottleneck issue, inefficient flow and unnecessary excess movement between activities. The objectives of this study to improve the current plant layout by redesigned it with increasing the production efficiency and productivity of the company. To achieve this aim, there are several layouts generated using Systematic Layout Planning (SLP) and Graph-Based Theory (GBT) and the Efficiency Rate (ER) of each layout was calculated. The layout with the highest rate was then selected and validated by using WITNESS software. The result showed that the ER of the selected layout improved from 74.49% to 93.40% and also increased the productivity and reduced the processing time up to 10%. The described case study will show how the efficiency and productivity of a real manufacturing system can be improved by redesign layout. -
PublicationOptimization of FDM process parameters to minimize surface roughness with integrated artificial neural network model and symbiotic organism search( 2022-01-01)
;Syahruddin M.A.Mat Darus I.Z.Fused deposition modeling (FDM) has shown to be a highly beneficial process for product development. However, one of the great challenges in using FDM is maintaining the surface quality of the produced part. Poor texture quality can be regarded as a defect. It is not part of the geometric prototype but results from the fabrication process. Poor input parameters typically cause these defects by the user. This paper presents the integration between an artificial neural network (ANN) and symbiotic organism search, known as ANN–SOS, to model and minimize the surface roughness (Ra) of the FDM process. The FDM input parameters considered were layer height, print speed, print temperature, and outer shell speed. The experimental data were collected using the central composite design response surface method. Then, the surface roughness model was established using an ANN. After validating the model's accuracy, it was combined with symbiotic organism search (SOS) to determine the optimal parameter settings for the minimum surface roughness value. The results illustrate that ANN–SOS with a 4-8-8-1 network structure would be the best model for surface roughness prediction. It was observed that decreasing the layer thickness, printing speed, print temperature, and outer shell speed of the FDM input parameters for ANN–SOS resulted in minimum surface roughness of approximately 2.011 µm, which was 12.36% better than the RSM method.