Designing an Auto Retractable, Manual Retractable & Permanent Car Cover to Provide Shelter from Heat & Rain during Moving & Stationary (Parking)

The project aims to design & manufacture a permanent car cover that has aerodynamic shape to be of shelter to car & hence reduce the temperature & give comfort to the car user. Malaysian hot climate leaves a car extremely heated up. Furthermore, the extra light from the sun affects visibility. Heavy rain can also reduce visibility when the raindrops hit the windshield. These may contribute to road accidents. A concurrent design approach will be used in designing and doing prototype for this device. The analysis includes analysis on aerodynamic capacity of the design for permanent cover & moving car. Beside that the research will study & use the appropriate material that can absorb and/or reflect heat & hence not disperse it to the car. A device will be designed & analysed which can reduce the heat imposed by the hot sun. It will cover up the roof of car. It is hope that with this device people can be more comfortable in their vehicle. Beside that several alternatives is given to the user to choose which kind of shelter is best for them, namely auto/manual retractable cover or permanent cover. People will feel more comfortable & less stress while driving hence reduce accident

A Review on Usability and User Experience of Assistive Social Robots for Older Persons

In the advancement of human-robot interaction technology, assistive social robots have been recognized as one of potential technologies that can provide physical and cognitive supports in older persons care. However, a major challenge faced by the designers is to develop an assistive social robot with prodigious usability and user experience for older persons who were known to have physical and cognitive limitations. A considerable number of published literatures was reporting on the technological design process of assistive social robots. However, only a small amount of attention has been paid to review the usability and user experience of the robots. The objective of this paper is to provide an overview of established researches in the literatures concerning usability and user experience issues faced by the older persons when interacting with assistive social robots. The authors searched relevant articles from the academic databases such as Google Scholar, Scopus and Web of Science as well as Google search for the publication period 2000 to 2021. Several search keywords were typed such as ‘older persons’ ‘elderly’, ‘senior citizens’, ‘assistive social robots’, ‘companion robots’, ‘personal robots’, ‘usability’ and ‘user experience’. This online search found a total of 215 articles which are related to assistive social robots in elderly care. Out of which, 54 articles identified as significant references, and they were examined thoroughly to prepare the main content of this paper. This paper reveals usability issues of 28 assistive social robots, and feedbacks of user experience based on 41 units of assistive social robots. Based on the research articles scrutinized, the authors concluded that the key elements in the design and development of assistive social robots to improve acceptance of older persons were determined by three factors: functionality, usability and users’ experience. Functionality refers to ability of robots to serve the older persons. Usability is ease of use of the robots. It is an indicator on how successful of interaction between the robots and the users. To improve usability, robot designers should consider the limitations of older persons such as vision, hearing, and cognition capabilities when interacting with the robots. User experience reflects to perceptions, preferences and behaviors of users that occur before, during and after use the robots. Combination of superior functionality and usability lead to a good user experience in using the robots which in the end achieves satisfaction of older persons

A Review on Usability and User Experience of Assistive Social Robots for Older Persons

In the advancement of human-robot interaction technology, assistive social robots have been recognized as one of potential technologies that can provide physical and cognitive supports in older persons care. However, a major challenge faced by the designers is to develop an assistive social robot with prodigious usability and user experience for older persons who were known to have physical and cognitive limitations. A considerable number of published literatures was reporting on the technological design process of assistive social robots. However, only a small amount of attention has been paid to review the usability and user experience of the robots. The objective of this paper is to provide an overview of established researches in the literatures concerning usability and user experience issues faced by the older persons when interacting with assistive social robots. The authors searched relevant articles from the academic databases such as Google Scholar, Scopus and Web of Science as well as Google search for the publication period 2000 to 2021. Several search keywords were typed such as ‘older persons’ ‘elderly’, ‘senior citizens’, ‘assistive social robots’, ‘companion robots’, ‘personal robots’, ‘usability’ and ‘user experience’. This online search found a total of 215 articles which are related to assistive social robots in elderly care. Out of which, 54 articles identified as significant references, and they were examined thoroughly to prepare the main content of this paper. This paper reveals usability issues of 28 assistive social robots, and feedbacks of user experience based on 41 units of assistive social robots. Based on the research articles scrutinized, the authors concluded that the key elements in the design and development of assistive social robots to improve acceptance of older persons were determined by three factors: functionality, usability and users’ experience. Functionality refers to ability of robots to serve the older persons. Usability is ease of use of the robots. It is an indicator on how successful of interaction between the robots and the users. To improve usability, robot designers should consider the limitations of older persons such as vision, hearing, and cognition capabilities when interacting with the robots. User experience reflects to perceptions, preferences and behaviors of users that occur before, during and after use the robots. Combination of superior functionality and usability lead to a good user experience in using the robots which in the end achieves satisfaction of older persons

Stab Resistant Analysis of Body Armour Design Features Manufactured via Fused Deposition Modelling Process

Five designs of imbricate scale armour features for stab-resistant application were printed via fused deposition modelling process. Stab test on these designs against the HOSDB KR1-E1 stab-resistant body armour standard with impact energy of 24 Joules was conducted. The stab test was conducted on a number of samples measured thicknesses ranging from 4.0 to 10.0 mm by using Instron CEAST 9340 Drop Impact Tower to determine a minimum thickness that resulted in a knife penetration through the underside of sample which does not exceed the maximum penetration permissibility of 7.0 mm. Materials used for the samples were ABS-M30 and PC-ABS. Finally, one of the designs which offered the highest knife penetration resistance was selected. The results show that PC-ABS samples provide less shattering and lower overall knife penetration depth in comparison with ABS-M30. PC-ABS stab test demonstrated a minimum thickness of 8.0 mm, which was the most adequate to be used in the development of FDM manufactured body armour design features. Lastly, the design feature of D5 has shown to exhibit the highest resistance to the knife penetration due to the penetration depth of 3.02 mm, which was the lowest compared to other design features

Evaluation of Mechanical Performance of Homopolymer Polypropylene/Kenaf Fibre/ Binder using Full Factorial Method

The mechanical performance of kenaf fibre/homopolymer polypropylene/binder composites was studied. Tensile test was used to investigate the tensile strength, tensile modulus and percentage of elongation. Kenaf fibre-homopolymer polypropylene (KFHPP) composites were compounded in an internal batch mixer with the ratio of 10:90, 30:70 and 50:50 in weight fraction. Furthermore, maleated polypropylene (MAPP) as a binder with 1, 3 and 5 % expressed as percentage of weight ratio was mixed in KFHPP composites. A hot pressing machine was used for producing samples of dog bone. From this study, it is found that the tensile strength and tensile modulus increase with increasing kenaf fibre loading and higher percentage of MAPP. In addition, the elongation at break for KFHPP composites shows lower result for increasing kenaf fibre loading. However, when the percentage of MAPP added to KFHPP composites increases, the elongation at break increased slightly. Thus, the result shows that the binder can enhance the interaction between kenaf fibre and homopolymer polypropylene composites, with resulted in better tensile strength and tensile modulus but less function at elongation at break

WARPAGE ANALYSIS VERIFICATION BETWEEN SIMULATION AND EXPERIMENTAL OF DUMBBELL PLASTIC PART IN THE INJECTION MOULDING PROCESS

Injection moulding is widely used to produce a variety of plastic parts. Its process involved various process parameters, which plays an important roles in influencing the quality and productivity of plastic parts. In this case, the application of Computer Aided Engineering (CAE) software is essential to enhance the quality of plastic parts in the injection moulding industry. This paper deals with the application of Moldflow Plastic Insight (MPI) intergrated with a statistical technique using Taguchi Method. The purpose of this application is to study the effect of process parameters on warpage deflection in dumbbell plastic part. Subsequently, the result of CAE simulation was validated with the aid of experimental data result. The Process parameters involved in this study were core temperature, cavity temperature, melt temperature and cooling time. Based on the simulation and experimental results, it was found that the most significant parameter affected warpage deflection is cavity temperature, followed by core temperature, melt temperature and cooling time. In addition, the results show that the minimum and maximum percentages of the differential of warpage deflection between the simulation and experiment are 4% and 10.89% respectively. Thus, this indicates that there is a good agreement between the simulation and the experimental data result

Trajectory Tracking Of A Mobile Robot System

This paper presents an efficient method of mobile robot navigation in an indoor environment. The robot not only helps workers reduce heavy workload, it also protects workers’ physical and mental health from the work-related-stress. However, the navigation of mobile robot in an indoor environment is a challenging task to accomplish due to the requirement to avoid any nearby obstacle during motion. In this paper, the objectives were to design and develop of mobile robot that is able to navigate from one location to another, analyze the accuracy of line following sensor and analyze the trajectory tracking of a mobile robot. In conclusion, the experimental results show that the mobile robot able to reach the target destination successfully without the collision with obstacles, for different types of trajectory patterns using the masking tape width of 18mm with the develop algorithm

Heavy metals concentrations in stormwater and tilapia fish (Oreochromis niloticus) in Kuala Lumpur holding and storage SMART ponds

The issue of heavy metal contamination in urban stormwater has become a major concern for environmental pollution control agencies worldwide due to toxic effects on aquatic organisms and human health. The aim of this study is to determine the levels of heavy metals (Pb, Cd, Cu, Cr and Zn) in surface stormwater and tilapia fish (Oreochromis niloticus) obtained from holding and storage ponds of the Stormwater Management and Road Tunnel (SMART) Project in Kuala Lumpur, Malaysia. Results have indicated that the concentrations of all heavy metals in stormwater were lower than the recommended water quality criteria established by the United States Environmental Protection Agency (US EPA). On the other hand, the concentrations of Cd, Cu, Pb and Zn detected in fish were below threshold values suggested by the Food and Agriculture Organization (FAO) and Malaysian Food Regulations (MFR) standards. Only Cr was much higher than FAO limits for fish consumption. Additionally, the content of Cr, Pb and Zn was higher in fish samples collected from holding pond compared to those in storage pond. As the study reflects that Cr in tilapia fish from SMART ponds is of a high concentration, certain harmful effects on human health may result. Accordingly, the research recommends avoiding fishing from ponds, as they accumulate a significant amount of waste consumed by the fish

Interchangeable Core And Cavity Plates For Two-Plate Family Injection Mould

This study modified a two-plate family plastic injection mould to become interchangeable by changing the core and cavity plates using an existing mould base. The plastic parts produced in the modified two-plate family plastic injection mould included tensile, hardness, impact and flexural test specimens. The cavities of the plastic parts were machined at the parting surface of core plate. Meanwhile, the feeding systems including runner and gate system were machined at the cavity plate to ensure molten plastic can be injected in the cavity area. Various factors have been considered during the designing and fabricating process. This is to ensure the process of assembly between mould plate and standard mould parts can be done perfectly. The plastic parts in the family mould were successfully injected after mould was completed assembled and mould trial was performed. The plastic parts which had been ejected from the family injection mould are purposely produced for future research to study the mechanical properties of plastic materials