Now showing 1 - 10 of 30
  • 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.
    ;
    Muslim M.M.
    ;
    Sharifhudin M.A.
    ;
    Khiruzzaki K.F.
    ;
    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
    Implementation of DFMA and FEA method as a combination approach in sustainable design: A case study of hair dryer design
    ( 2021-05-03) ; ; ;
    Rahman M.G.A.
    ;
    Ahmad S.A.S.
    ;
    Asri M.A.
    ;
    Tamizi N.S.M.
    ;
    Haris N.A.M.
    ;
    Zawawi S.A.
    This study aims to analyse the components of the hairdryer to 1ecogniz the quantities or improvements in the features of the components involved, and it is necessary to study possible sustainable design improvements. Thus, it is implementing Design for Manufacturing (DFMA) and Life Cycle Analysis (LCA) approach to assist sustainability analysis. The results from a product survey of consumers found that 75% of consumers are from women while the rest are men who use hair dryers. Therefore, people in the 18-30 years old prefer to use the hairdryer when while 18.8% of users often keep the hair dryer on the makeup table and 12.5% of users keep the makeup drawer to look neat. While the results of sustainability study on hair dryer products have found that before analysis using PP Copolymer material there was a good impact on the product analysis in terms of Material Unit Cost of 2.80 USD / kg compared to previous use of ABS material of 2.90 USD / kg. While in terms of Material Financial Impact from the use of PP Copolymer there was a decrease of 0.20 USD compared to material abs usage of 1752.00 USD. In terms of weight the hairdryer has also experienced a weight reduction of 70.05 g to 60.04 g. But in terms of duration of use still the same period of the application for a year and also in term transportation still remain the same as truck distance 1600 km. The surface area of the product also decreased from 76268.30 mm2 to 74199.49 mm2. The methods used for hair dryer production are finite element analysis and sustainability analysis..
  • Publication
    DFMA and sustainable design analysis: Optimisation of RC helicopter controller
    ( 2021-07-21) ; ; ;
    Ahmad S.A.S.
    ;
    Roslim N.A.T.
    ;
    Faiz M.A.
    ;
    Ashraf M.A.
    ;
    Masri H.
    This paper presents the enhancement of product redesign, assembly, and environmental consideration analysis of RC Helicopter Controller throughout Design For Manufacture and Assembly (DFMA) and Sustainability evaluation using SolidWorks@ sustainability software. Computer-Aided Design (CAD) is used to redesign the entire component in minimising the assembly time. Then, the redesigned product will lead to sustainability evaluation. Thus the objective of this study is to mitigate the economic factors of product development as well as environmentally friendly product and social acceptability ways. This product design approach is significant to the quality of the product in terms of functionality and will influence manufacturing utilisation. Therefore this study will show systematisation and analysis manufacturability of product design with a focus on DFMA and environmentally approach.
  • 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
    Analysis particle trajectory and air flow on hopper for swiftlet feeding machine using computational fluid dynamics (CFD)
    Currently, the bird house entrepreneur feeds the bird manually, and there is the opportunity to develop the feeding machine for swiftlets with good efficiency. This research is focused on analyzing the flow of the particle for the mechanism of the machine. The methodology of this project includes the collection of data, brainstorming and interprets data, design concept, analysis, fabrication, and testing. The design of the automatic swiftlets feeding machine is using Solidworks software. With this software, the structure can be analyzed to Finite Element Analysis (FEA) directly. The flow of the air from the blower that acts as the mechanism in this machine can be analyzed by using the Computational Fluid Dynamis (CFD) simulation. The result of the analysis is shown in the form of the finite element analysis, particle trajectory of food, and the air flow from the blower.
  • Publication
    Design and analysis of solar car chassis
    (IOP Publishing Ltd., 2020) ; ; ;
    Abdellah el-hadj Abdellah
    ;
    A solar car is a lightweight, low power vehicle designed and built with a single purpose in mind–racing with and only drive during the day. It has limited seating (one or two peoples) and usually has very little cargo capacity. However, it offers an excellent opportunity to develop future technologies that can be applied to practical applications. This study will focus on design and analysis solar car chassis part. The primary challenge in developing an effective solar car chassis is to maximize strength and safety while minimizing the weight. Every extra pound requires more energy to move down the road. However, safety is a primary concern and the chassis must meet stringent strength and safety requirements. The purpose of the study is to understand the concept design of solar car chassis in terms of calculation, material selection, chassis style selection and virtual analysis for chassis using CATIA software.
  • 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  15
  • Publication
    The improvement of a portable blender design using DFMA and environmental impact assessment
    ( 2021-07-21) ; ; ;
    Ahmad S.A.S.
    ;
    Fai K.K.
    ;
    Nain L.T.
    ;
    Jing K.X.
    ;
    Zulkeply S.Z.
    This article study of portable blender components to reduce the amount needed and to determine the potential for enhancing sustainable design. The DFMA and Life Cycle Analysis (LCA) have been used for this work and are integrated. The results demonstrated how the number of components reduced by DFMA to 38%, while the LCA demonstrated weight reduction, by 50%, of carbon footprint, by 58,33%, water eutrophication, by 76,47%, acidification, by 179% and overall energy consumption, by 70%. This recent approach is important to prove the efficiency and sustainability of both the technologies used to decrease the cost of making a portable blender.
      18  3
  • Publication
    The utilisation of DFMA and FEA method towards sustainable design improvement: A case study of air freshener
    ( 2021-05-03) ; ; ;
    Harun N.H.
    ;
    Ahmad S.A.S.
    ;
    Norli K.
    ;
    Saini N.
    ;
    Mazlan N.A.
    ;
    Omar N.
    This paper is about evaluating the components of an automatic air freshener in minimising some part of the quantity required and to design the improvement of an automatic air freshener by emphasising and adapting sustainable design consideration. For this project, Life Cycle Analysis (LCA) and Design for Manufacturing Assembly (DFMA) were applied and used on the automatic air freshener to achieve the best result. Hence, the final results stated that there was 30% components reduction was achieve using DFMA approach, and consequently, the weight was reduced to 42%. After applying LCA on the automatic air freshener, the environmental impacts were also achieving the requirement by reducing 64% of the average effect for the whole product. Both of these tools need to be applied to prove the effectiveness so that the cost of manufacturing in producing an automatic air freshener will be reducing and at the same time the environmental aspects of product design should be strengthened especially during the phase of conceptual design.
      1  10
  • Publication
    Environmental and Assembly analysis using LCA, DFMA and FEA on cordless screwdriver
    ( 2021-05-03) ; ; ;
    Harun N.H.
    ;
    Ahmad S.A.S.
    ;
    Hashim A.H.
    ;
    Rahman A.S.A.
    ;
    Zohid K.R.M.
    ;
    Balakrishnan V.
    A cordless screwdriver is a type of power tools available in the market, purposely used for fastening and drilling task powered by a rechargeable battery. In the design process, the designer is required to identify the possible changes of some issues found on the cordless screwdriver development emphasising cost, number of parts, materials, manufacturing process and the life cycle of this product. Thus, this research work towards focusing on the analysis of Cordless Screwdriver to minimise the components and to improve the design sustainably. Design for Manufacturing Assembly (DFMA) and Life Cycle Analysis (LCA) was utilised in this study. Analysis has shown how the number of components has been reduced to 15 per cent after the DFMA application. While the LCA has demonstrated a reduction of weight to 12%, air acidification is 8% and total energy 13%, carbon footprint 6% and water eutrophication is 6%. This new approach is important to demonstrate the efficiency of both to reduce the costs of producing a Cordless Screwdriver.
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