Now showing 1 - 10 of 39
  • Publication
    The improvement of assembly process and environmental impact using the integration of DFMA and sustainable design analysis approach: Case study of spotlight
    ( 2021-07-21) ; ; ;
    Ahmad S.A.S.
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    Muslim M.M.
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    Sharifhudin M.A.
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    Khiruzzaki K.F.
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    Nordin N.
    This investigation analyses spotlight components to reduce the necessary amount and explore the potential to enhance the sustainable design. The DFMA and Sustainability design considerations for manufacturing assemblies were used and incorporated in this work. DFMA outcome displays that components were reduced while the LCA showed that weight, carbon footprint, acidification of the air, water eutrophication and overall energy consumption were reduced. This new approach is essential for demonstrating the efficiency of both tools used to reduce the cost of spotlight manufacture and enhance the sustainable aspects of product design.
  • Publication
    Redesign of bahulu production layout to improve the efficiency of process flow
    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.
  • Publication
    Design and Fabrication of Jig and Fixture for Panel Pin Assembly in Power Motor Side Mirror
    (Universiti Malaysia Perlis, 2025-06-10)
    Vinoth Baskaran
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    ;
    This research focuses on the design and fabrication of a jig and fixture to optimize the assembly process of panel pins for a car side mirror power motor. The current manual assembly method is inefficient, time-consuming, prone to frequent errors, and results in material wastage. To address these challenges, the study aims to develop a jig and fixture that enhances efficiency, reduces cycle time, and improves ergonomics. The methodology encompasses data collection, concept generation, CAD modeling using SolidWorks, and precision machining for prototype fabrication. Key analyses include time study, cost evaluation, and ergonomic assessment. The results reveal a significant 50.82% reduction in cycle time, from 4:04 minutes to 2:00 minutes, resulting in improved productivity and streamlined operations. Ergonomic analysis highlights enhanced operator posture and minimized physical strain, while cost analysis estimates the total fabrication cost at RM 156.26, emphasizing the design’s cost-effectiveness. This project successfully demonstrates the potential of jigs and fixtures to address manual assembly inefficiencies, improve manufacturing outcomes, and serve as a practical model for broader industrial applications.
  • Publication
    A study of new washing process which combines deflection and abrasion action
    This study aimed to determine the optimum washing of laboratory washing model that design to stimulate the active washing process and passive commercial washing machine are compared in order to determine the best washing result. Variables of the study include water speed, washing time and radial nozzle inclination angle. The rotational system of an automatic washing machine has two major technical difficulties. One is the collision of the tub against the frame at the beginning of its early spinning stage. A factor that causes such instability of the rotational object can be attributed to the deflection of the liquid inside the liquid balancer due to the unbalance mass. Proposed a new washing technology and new design of the washing machine can be as a base of its new type. These machines have better outcome data; improve quality of washing process and effective use of washing liquid. New washing machine is simple design, does not have rotary parts at all and uses active process of washing process with squeezing of linens and more productive then known washing machines. Also, this machine can recycle and feed cleaned washing liquid. Additionally, in use of ultrasonic technology of washing process, new machine today will be perfect design.
  • Publication
    Redesign of drone remote control using design for manufacturing and assembly (DFMA) method
    "The redesign of drone remote control using DFMA method" is a case study to analyze and redesigned the controller product through its assembly process in term of manual handling time, manual insertion time, total assembly time, design efficiency of the design and manufacturing method for the design. The components and manufacturing of the drone remote control were undergone alteration with design for manufacturing and assembly (DFMA) and redesigned methods. The main focuses of this research are to analyze the current design efficiency of drone remote control and improved the design efficiency. At the same time, the redesign was applied to existing model under the same platform. As a result, the assembly time for redesign showed an improvement of 24.93% where the assembly time was reduced from 480.56 s to 360.79 s and design efficiency was increased 1.66% from 4.99% to 6.65%. Therefore, the best design with optimal value is accomplished.
      19  1
  • Publication
    Sustainability assessment of torchlight design: Identification of new design structure and material selection
    ( 2021-05-03) ; ; ;
    Mansor Z.
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    Ahmad S.A.S.
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    Jui T.H.
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    Faissal N.A.
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    Rusdi N.M.
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    Piah N.S.M.
    A common torchlight comprises of a lighting source fixed in a reflector and a clear lens, battery, switch and enclosed or protected body case. Based on the original design of this torchlight, customers are having problem to hold the torchlight due to poor grip and causing the torchlight easy to slip off and possibly get damaged when it falls into the water. The objectives of this project intend to improve the torchlight design to secure handling, maintenance, and to increase the durability of the torchlight against water using Àoat material which also enables the user to locate the torchlight in a short time. In conclusion, this study also identifies the possible environmental factors that assessed using sustainability tools to ensure the entire design structure will enhance the sustainability issue. Thus, based on the sustainability assessment, the float material able to apply for this purpose to achieve the objective, and the design concept is according to the customer requirement.
      17  1
  • Publication
    Ergonomic study of X-L wheelchair
    Wheelchairs have been used widely as the one of the vehicles that are designated purposely to help the disabled patient to easily move around. However, the standard wheelchairs currently available in the market are mostly fit to patients which have average size and can only accommodate the patient with maximum body mass up to 100kg. When a big size or extra-large (XL) patient with body mass more than 100 kg uses this standard wheelchair, they may feel discomfort, cramped as well as restricted movement. Furthermore, the structure of standard wheelchairs may not be safe enough to hold the load of big size patient weight. Therefore, this project is focused to study the appropriate an ergonomic body sizes and dimensions of big patients that body mass ranging from minimum 100kg to maximum 150kg. The investigation is focused on the customer needs as well as anthropometry body measurements. The data was collected from the questionnaires and direct interview among 30 personnel with the body mass in target range. The information gathered then had been used to custom design the XL wheelchair that fulfil the most requirements and having sturdy structure that safety to be used.
      1  31
  • Publication
    Integrating DFMA to sustainability and FEA assessment: Case study of portable bluetooth speaker
    ( 2021-07-21) ; ; ;
    Ahmad S.A.S.
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    Rosley S.N.
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    Ramli Y.N.
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    Razak M.F.A.
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    Ahamad N.Z.
    Bluetooth is a well-known technology producing short-range wireless links that enables a short distance from two or more devices. This article focuses on improving the assembly process and its effect on the environment using DFMA and sustainable design on portable bluetooth speakers. However, the problem regarding this speaker is it comes box-shaped that is outdated and bulky. It also does not resistant to water as it is limited to dry places only. The objectives of the research are to re-design a much compact and sleek looking portable Bluetooth speaker and to ensure the speaker to be water-resistant. In addition, DFMA is used to minimising the quantity required, and SolidWorks@ software is applied to evaluate by comparing different materials and four environmental factors such as carbon footprint, water eutrophication, total energy consumption, air acidity as well as material financial impact.
      2  13
  • Publication
    Irregular shape effect of brass and copper filler on the properties of Metal Epoxy Composite (MEC) for rapid tooling application
    ( 2022) ;
    Safian Sharif
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    ;
    Allan Rennie
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    Mohd Azlan Suhaimi
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    Abdellah El-hadj Abdellah
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    ;
    Mohd Tanwyn Mohd Khushairi
    ;
    Aurel Mihail Titu
    Due to their low shrinkage and easy moldability, metal epoxy composites (MEC) are recognized as an alternative material that can be applied as hybrid mold inserts manufactured with rapid tooling (RT) technologies. Although many studies have been conducted on MEC or reinforced composite, research on the material properties, especially on thermal conductivity and compressive strength, that contribute to the overall mold insert performance and molded part quality are still lacking. The purpose of this research is to investigate the effect of the cooling efficiency using MEC materials. Thus, this research aims to appraise a new formulation of MEC materials as mold inserts by further improving the mold insert performance. The effects of the thermal, physical, and mechanical properties of MEC mold inserts were examined using particles of brass (EB), copper (EC), and a combination of brass + copper (EBC) in irregular shapes. These particles were weighed at percentages ranging from 10% to 60% when mixed with epoxy resin to produce specimens according to related ASTM standards. A microstructure analysis was made using a scanning electron microscope (SEM) to investigate brass and copper particle distribution. When filler composition was increased from 10% to 60%, the values of density (g/cm3), hardness (Hv), and thermal conductivity (W/mK) showed a linear upward trend, with the highest value occurring at the highest filler composition percentage. The addition of filler composition increased the compressive strength, with the highest average compressive strength value occurring between 20% and 30% filler composition. Compressive strength indicated a nonlinear uptrend and decreased with increasing composition by more than 30%. The maximum value of compressive strength for EB, EC, and EBC was within the range of 90–104 MPa, with EB having the highest value (104 MPa). The ANSYS simulation software was used to conduct a transient thermal analysis in order to evaluate the cooling performance of the mold inserts. EC outperformed the EB and EBC in terms of cooling efficiency based on the results of thermal transient analysis at high compressive strength and high thermal conductivity conditions.
      5  18
  • Publication
    Non flow process ultra high temperature (UHT) boiler application to dadih processes
    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.
      1  26