Papers by Saiful Bahari Shaari
Lecture notes in mechanical engineering, Aug 9, 2022
International Journal of Engineering & Technology, 2018
This work introduces a new universal wheelchair transporter to transport a conventional wheelchai... more This work introduces a new universal wheelchair transporter to transport a conventional wheelchair from one point to another. The chosen design concept had been selected using Pugh chart selection method [13], considering all aspect contributed that give the highest weightage. The 3D design utilized CATIA software to visualize the product. Mecanum wheels were chosen to move the platform due to its flexibility and maneuverability in any direction without turning the universal transporter. The objective of this project is to develop a fully functional universal wheelchair transporter to transport a patient from one room to another room in the hospital. The performance of the product design is then tested using Finite Element Analysis and shows good results.
International Journal of Engineering & Technology, 2018
Particle tracking has been used widely to track a single particle motion or trajectory in a mediu... more Particle tracking has been used widely to track a single particle motion or trajectory in a medium. One of the applications of the particle tracking is in sports analysis. The tracking method can be divided into, the wearable device based system and the image based system. The wearable device based system utilizing global (GPS) and local (LPM) positioning system to track player movement. The image based system use video image processing to track the player movement and recorded is frames basis. However, the image processing method in a football match requires correction as it is normally recorded from the side of the field. Thus, to solve this problem a set of mathematical solution is needed to convert the image coordinate system (pixels) to the actual coordinate system (meters). The most commonly used is the homography method. The technique requires at least 4 reference points to transform the image coordinate into the actual coordinate system. In this project, a futsal game was re...
A three-dimensional (3D) finite element model was created to simulate the friction stir welding p... more A three-dimensional (3D) finite element model was created to simulate the friction stir welding process of 6063-T5 aluminum alloy. The analysis studies the fundamental knowledge of FSW process with respect to temperature difference in material to be joined and to simulate the temperature distribution in the workpiece as a result of a Friction Stir Welding. The simulation uses HyperMesh and HyperView solver from Altair Hyperworks. The simulation provides better understanding for the peak temperature distribution in the friction stir process. Two cases have (i) constant traverse speed, but varying been simulated rotational speed, and (ii) constant rotational speed, but varying traverse speeds. Simulation results show the peak temperatures increased when the traverse and rotational speeds were increased.
During welding, the amount of heat present in weld zones determines the quality of weldment produ... more During welding, the amount of heat present in weld zones determines the quality of weldment produced. Thus, the heat distribution characteristics and its magnitude in weld zones with respect to process variables such as tool pin-shoulder rotational and traveling speed during welding is analyzed using thermal finite element analyses method. For this purpose, transient thermal finite element analyses are performed to model the temperatures distribution and its quantities in weld-zones with respect to process variables such as rotational speed and traveling speed during welding. Commercially available software Altair HyperWork is used to model three-dimensional tool pin-shoulder vs. workpieces and to simulate the friction stir process. The results show that increasing tool rotational speed, at a constant traveling speed, will increase the amount of heat generated in weld-zones. In contrary, increasing traveling speed, at constant tool pin-shoulder rotational speeds, will reduce the amo...
─ This work describes a multifingered anthropomorphic robotic hand with fourteen Degrees of Freed... more ─ This work describes a multifingered anthropomorphic robotic hand with fourteen Degrees of Freedom (DOF) which is able to mimic the functional motions of a biological hand especially in handling complex objects. The actuation mechanisms consisting of micro servo-motors, pulleys and belts are connected to the finger joints and thus promote bending and extending of the fingers. Two kinds of sensors, i.e. force sensor and light dependent resistor, are integrated into the system. The robotic hand can be controlled via a graphical user interface embedded with control codes or a joy stick integrated to a control board. Furthermore, the robotic hand is able to operate autonomously with the aid of sensory elements and embedded control software. Workability tests showed the capability of the system to move every finger individually and to perform grasping tasks on objects with varying sizes and geometries such as a tennis ball and a screw
International Journal of Engineering & Technology
An interconnected, data driven smart logistics management system is crucial in a smart factory in... more An interconnected, data driven smart logistics management system is crucial in a smart factory in context of Industry 4.0. Applying the concept of cyber-physical systems (CPSs) and Internet of Things (IoT) will create a standardized logistics system. This system can be applied across the supply chain to enable the sharing of information in real-time which consequently optimize logistics processes. In this project, a conceptual model of a smart logistics management system between a supplier and a manufacturer using NFC smart tags technology is developed and its application is shown using prototype demonstrator. The system is equipped with functions to monitor and manage logistic related data. The interface is built using windows form application and android phone application. The developed model’s abilities and specifications in context of industry 4.0 is evaluated using the VDMA Toolbox Industry 4.0. In the end this system achieved an average of level 4 in the Industry 4.0 evaluatio...
Procedia Computer Science, 2015
Procedia Computer Science, 2015
Jurnal Teknologi, 2015
A three-dimensional (3D) finite element model was created to simulate the friction stir welding p... more A three-dimensional (3D) finite element model was created to simulate the friction stir welding process of 6063-T5 aluminum alloy. The analysis studies the fundamental knowledge of FSW process with respect to temperature difference in material to be joined and to simulate the temperature distribution in the workpiece as a result of a Friction Stir Welding. The simulation uses HyperMesh and HyperView solver from Altair Hyperworks. The simulation provides better understanding for the peak temperature distribution in the friction stir process. Two cases have (i) constant traverse speed, but varying been simulated rotational speed, and (ii) constant rotational speed, but varying traverse speeds. Simulation results show the peak temperatures increased when the traverse and rotational speeds were increased.
Jurnal Teknologi, 2015
Friction stir welding (FSW) is a promising joining process that offers a high potential to be wid... more Friction stir welding (FSW) is a promising joining process that offers a high potential to be widely applied across industry sectors such as automotive, shipbuilding and aerospace. Nevertheless the path force can vary significantly due to the fluctuation of workpiece temperature and other process variations, thus results in inconsistency in weld microstructure. This paper describes the system integration of a FSW machine with a focus on the development of a traverse controlled table in order to produce a consistent temperature and path force along the weld path in FSW process. Aluminium alloy 6061 plate and a FSW’s tool with a flat shoulder and conical pin without thread are used. Advantages of such an approach include wormhole generation will be eliminated, a high quality of weld microstructure can be produced and the synchronization between the temperature and path force can be obtained.
2011 IEEE International Conference on Control System, Computing and Engineering, 2011
This paper proposed a face detection method for tracking the faces of children with Autism Spectr... more This paper proposed a face detection method for tracking the faces of children with Autism Spectrum Disorder in a robotic assistive therapy. The face detection is a novel approach in robotic assistive therapy involving autistic children since it is believe that those children will positively react with high-end devices, gadget and cutting edge devices. The intention of tracking the autistic children's faces is to measure the concentration level of the children in social interaction and communication since everyone knows that those children are suffering from communication disabilities and deficits due to brain developmental disorder. Humanoid Robot Nao with 573.2mm height equipped with 2 internal cameras is utilized for this research. The face detection tools in choregraphe and telepathe based on Graphical User Interface (GUI) module is used in this study. The non-verbal interaction between humanoid robot and autistic children is recorded by using 2 internal cameras from the robot's head. The interaction is going to take about 30 minutes and supervised by occupational therapist and certified psychologist. The autistic children will be introduced to the Humanoid Robot Nao and their reaction will be recorded simultaneously while the robot is trying to track their faces.
2011 IEEE International Conference on Control System, Computing and Engineering, 2011
Humanoids; a most intriguing subject to behold by both the engineers and the world at large. With... more Humanoids; a most intriguing subject to behold by both the engineers and the world at large. With the introduction of humanoid robot NAO by Aldebaran-Robotics in 2008, a performant biped robot is now available and affordable for research laboratories and the mass market. In this paper, an exploration of current trends in control methods of biped walks, behavior interface tools for motion control for NAO and imminent findings in both research areas are discussed. Future directions are for researchers to devise a unique controller with low power consumption without compromising the robot's speed and robustness.
A three-dimensional (3D) finite element model was created to simulate the friction stir welding p... more A three-dimensional (3D) finite element model was created to simulate the friction stir welding process of 6063-T5 aluminum alloy. The analysis studies the fundamental knowledge of FSW process with respect to temperature difference in material to be joined and to simulate the temperature distribution in the workpiece as a result of a Friction Stir Welding. The simulation uses HyperMesh and HyperView solver from Altair Hyperworks. The simulation provides better understanding for the peak temperature distribution in the friction stir process. Two cases have (i) constant traverse speed, but varying been simulated rotational speed, and (ii) constant rotational speed, but varying traverse speeds. Simulation results show the peak temperatures increased when the traverse and rotational speeds were increased.
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Papers by Saiful Bahari Shaari