54 research outputs found
Produk WREHAB mudah alih bantu juru terapi manfaatkan pesakit
Get PDFPekan, 1 November- Penyelidik Universiti Malaysia Pahang (UMP), Idris Mat Sahat dari Fakulti Kejuruteraan Mekanikal (FKM) berjaya mencipta produk Wrist Rehabilitation Device (WREHAB) yang dapat membantu juru terapi untuk melakukan rehabilitasi dan ke atas pesakit semasa sesi fisioterapi pergelangan tangan khusus buat pesakit strok dan pesakit yang menjalani terapi di bahagian sama
Fluid Mechanics 1
Get PDFThis module was developed for the purpose of helping students especially for those who are taking fluids mechanics 1 as a subject in Faculty of Mechanical Engineering, Universiti Malaysia Pahang. The target users for this book are the students who have interest in learning more regarding fluid mechanics. In this module, there are many questions with solutions (examples), question to be done by students (on their own will-as practice makes perfect) together with the answers provided. Students
always are not certain if their answers to the exercises are correct or not especially for the bright ones. Thus, with the answers included, this will help the students to confirm whether they are on the correct path or not
A numerical analysis of two dimensional lid driven cavity flow using cubic interpolated pseudo-particle method
Get PDFThe Finite Different Navier Stokes equation (FDNSE) and Cubic Interpolated Pseudo-Particle Navier Stokes equation (CIPNSE) are applied to simulate the 2-D square lid driven cavity flow of water at Reynolds numbers 100, 400 and 1000. CIPNSE scheme solves hyperbolic type equations which is the vorticity transport equation In the CIPNSE, the gradient and the value of the vorticity at the nodes is determined and the stream function is then determined using the vorticity equation. It is discovered that the numerical simulation of CIPNSE provided a very good agreement with the established ‘benchmark’ results by Ghia et. al. but is slightly less accurate compare to FDNSE. The flow structure of 2-D shallow lid driven cavity flow of water at Reynolds numbers has been studied numerically using CIPNSE and compared with FDNSE and Ghia result which show good agreement. The location of the primary and secondary vortex also settled at the same place. For shallow cavity flow, both streamline pattern using FDNSE and CIPNSE show concluding remarks compare to CIPLBM. On top of that, the accuracy of CIPNSE and FDNSE are compared based on Ghia result within the midsection velocity profile where minor differences of accuracy are demonstrated for CIPNSE. On the other hand, both midsection velocity for CIPNSE and FDNSE show tiny differences compare to FDNSE and Constrained Interpolation Profile Lattice Boltzmann Method (CIPLBM). Yet CIPNSE is practical in simulating two dimensional lid driven cavity
Finite difference and cubic interpolated profile lattice boltzmann method for prediction of two-dimensional lid-driven shallow cavity flow
Get PDFIn this paper, two-dimensional lid-driven cavity flow phenomena at steady state were simulated using two different scales of numerical method: the finite difference solution to the Navier–Stokes equation and the cubic interpolated pseudo-particle lattice Boltzmann method. The aspect ratio of cavity was set at 1, 2/3, 1/2 and 1/3 and the Reynolds number of 100, 400 and 1,000 for every simulation condition. The results were presented in terms of the location of the center of main vortex, the streamline plots and the velocity profiles at vertical and horizontal midsections. In this study, it is found that at the simulation of Reynolds numbers 100 and 400, both methods demonstrate a good agreement with each other; however, small discrepancies appeared for the simulation at the Reynolds number of 1,000. We also found that the number, size and formation of vortices strongly depend on the Reynolds number. The effect of the aspect ratio on the fluid flow behavior is also presented
Numerical Investigation on Effect of Immersed Blade Depth on the Performance of Undershot Water Turbines
No full textEnergy, especially electricity, plays a vital role in global social and economic development. High annual rain rate in Malaysia seems a good potential for electricity generation especially through small hydro powers. Undershot water turbines are one of the hydropower turbines used for many years. However, the effect of blade depth immersed in the flowing water is not fully investigated. Therefore, the purpose of this paper is to study the effect of immersed blade depth for straight blade undershot water turbine in power generation by using Computational Fluid Dynamics (CFD) method. ANSYS CFX 15.0 was used to perform three dimensional analysis under steady state, incompressible, and non-isothermal conditions. The water wheel with number of blades of 6 and four different immersed depth was applied for each simulation. There are four different immersed depth was applied to each simulation, which are 20 mm, 40 mm, 60 mm and 80 mm. From the simulation result, it was found that the optimum immersed depth is 40 mm where the torque load and power generated were 0.264 N.m and 1.318 Watt respectively
A study on 3D printing usage among Malaysian users
Get PDFIn this research, the use of three-dimensional (3D) printing among Malaysian users was studied. The aim of the research is to establish the demographics and use of 3D printing in Malaysia. A questionnaire was distributed among 3D printing users during a 3D printing webinar and via social media groups consisting of 3D printer users. For the demographic section, 74 males and 8 females responded to the questionnaire, with more than 90% of the respondents have tertiary education. 39% of the respondents are from Greater Klang Valley, and 33% of the respondents are self-employed. The highest application of 3D printing is for hobby (i.e., 67% of the respondents), while the highest response for experience in 3D printing is 28% with 1–3 years of experience. Creality 3D printer brand is the most selected printer brand, with 64.7% of the respondents using the brand. 33% of the respondents used the printer at a heavy usage rate of 5 days per week, which is the highest response. For the material used, 85.4% of the respondents agreed that they normally used polylactic acid, while 79.3% of the respondents selected Cura as the most used software. Furthermore, 79.3% of the respondents stated that the infill percentage setting as the most changed setting, while 63.4% of the respondents agreed that bed levelling is the most common problem in 3D printing. In the opinion section, most of the respondents believed that 3D printing technology is still new and should be taught in schools. Based on the results, the research has successfully established the demographics and usage among 3D printer users in Malaysia
Development and Analysis of Arrow for Archery
Get PDFThis project is about the development and analysis of arrow for archery. 3 types of arrow head been designed: bullet shaped head, 3D shaped head and cone shaped head. The arrow performance measurement parameters were studied such as the FOC values, static stiffness values and the drag forces. SolidWorks 2012 was used to designs the three types of arrow head and the drag force is simulated by using SolidWork Flow Simulation. The material used for the arrow head fabrication is stainless steel 304. The arrow shafts used are carbon shaft of 5.46mm outer diameter and 7mm fiberglass and carbon fiber shaft. 3 different shaft properties are used to determine the effect of static stiffness, arrow heads weight and shaft diameter on the drag force generated at the arrow. The experimented result for Beman 570-14 arrows are slightly higher compared to simulation results obtained from SolidWorks. The possible cause is the characteristic of the arrow during flight where arrows starts to bend in C manner then straight again then bend again in reverse C manner and so on when it been shot. These deformation causes energy losses to the surrounding due to air friction, natural damping effect and shear friction. From the result obtained, it is shown that fiberglass shaft arrow has the highest drag force regardless of the arrow head types used compared to the other two types of shaft. Although Beman 570-14 shaft has smaller frontal area compared to a 7mm outer diameter carbon fiber shaft, the drag force obtained from the experiment shows that both bullet shaped head and 3D shaped head for carbon fiber shaft has lower drag force compared with the same arrow head shape
Numerical Prediction of Flow Induced Fibers Orientation in Injection Molded Polymer Composites
Get PDFSince the filling stage of injection molding process has important effect on the determination of the orientation state of the fibers, accurate analysis of the flow field for the mold filling stage becomes a necessity. The aim of the paper is to characterize the flow induced orientation state of short fibers in injection molding cavities. A dog-bone shaped model is considered for the simulation and experiment. The numerical model for determination of the fibers orientation during mold-filling stage of injection molding process was solved using Computational Fluid Dynamics (CFD) software called MoldFlow. Both the simulation and experimental results showed that two different regions (or three layers of orientation structures) across the thickness of the specimen could be found: a shell region which is near to the mold cavity wall, and a core region at the middle of the cross section. The simulation results support the experimental observations that for thin plates the probability of fiber alignment to the flow direction near the mold cavity walls is high but low at the core region. It is apparent that the
results of this study could assist in decisions regarding short fiber reinforced polymer composites
Design and Implementation of Adaptive Cyanosis Baby Manikin for Medical Training Application
No full textThis paper explores the design principles for an adaptive cyanosis colour changing baby manikin by assembling all previous pieces of knowledge of cyanosis baby manikin. We attained the cyanosis colouration in an experimental setup during the previous study using a three-dimensional (3D) printed baby’s head in a black box with the Philips Hue bulb as an actuator. This paper’s motivation is to develop a working prototype of an adaptive cyanosis baby manikin, which aims to change colour from cyanosis to non-cyanosis with the real colouration, within the correct timing to be used for cyanosis recognition in medical training application. To attain this goal, we introduce the design and development of adaptive cyanosis colour changing baby manikin by employing smart lighting control, together with the Philips Hue LED bulb attached to the 3D printed baby’s head. In this paper, the cyanosis colour changing in a 3D printed baby’s head was simulated by controlling the Philips Hue bulb using the Processing software and IoT-based mechanism. The LDRs were embedded into the adaptive cyanosis baby manikin by monitoring the lux values of the room’s lighting condition. The colour change of the cyanosis can be visualised and verified both on the 3D printed baby’s head and in the trainer’s laptop in Processing software. We believe that the proposed adaptive cyanosis baby manikin will pave the way for a future practical cyanosis simulator to be used in real training.</p
Investigation of fibre reinforcement toward polymer production emphasizing fused deposition modelling
Get PDFIn this research, we want to study the effect of fibre reinforcemenrt towards the mechanical strength. We use cylinder tubes to study the effect of combining PLA(polyl Actic acid) 3D printing and carbon fibres together with PLA (3D print only) and Carbon Fibre reinforced Plastics (only). We used compression testing to determine the mechanical properties of each specimen. From the study we found out,the combined hybrid CFRP/PLA show the highest compressive strength as compared to others
- …
