eJournal Jabatan Pendidikan Politeknik dan Kolej Komuniti
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Design and Development the Onion Peeling Machine Using Diamond Mesh Shape Tromp Peeler
Get PDFOnion peeling machine was developed for a Small-Scale Food Industry. The machine was equipped with horizontal rotating tromp peeler and aided with compressed air to remove the outer layers of the shallot skin. The goals and objectives for this project will focus on design, invention and fabrication that improves and reduce the operation time, enhances the ability and effectiveness of onion peeling machine. The machine was tested to determine the machine peeling capacity, the percentage of removed shallots skin and peeling efficiency towards three different types of shallots (Siam, India, Rose India). Results shows that the peeling capacity for India and Siam shallots skins were no significant difference compare with India Rose. The percentage of removed shallots skins are higher for Siam (84%) and India (80%) shallots due to the very thin membrane of the skins compare with India Rose (76%) that had strong roots and thick membrane layers. As a conclusion, this onion peeling machine was designed, fabricated and tested successively for different types of shallots and capable to peels the shallots skin to produce higher throughput
Design and Development of Potato Processing Machine
Get PDFNowadays, the process of peeling and cutting potatoes usually made separately, either using manual method or machine where peeler machine is used to peel potatoes skin while cutter machine is used for cutting only. This is not only requires a lot of manpower and also time consuming which is affecting the quality of the end product due to browning effect. Equipment that is capable to do all the processes starting from the cleansing, peeling skin and cut potatoes to the desired shape is required. A new innovative potato processing machine that has been designed and developed consists of a framework, a peeler machine mounted on the frame, a cutter machine mounted on the frame and a controller mounted on the frame to control both peeler and cutter machine. The operation of this machine started with 15 kilograms of potatoes placed into peeler drum and water is poured into the drum for cleaning process. Result found that this machine is capable in peeling 15 kilograms of potatoes in 1-2 minutes. A sliding divider is installed vertically on peeler drum to prevent potatoes from entering the cutter machine during the peeling process so that potatoes skin can be peeled properly. A connector installed in perpendicular from the peeler machine to cutter machine to allow potatoes into space of cutter machine with appropriate feed rate for cutting process based on required shape. Cutter machine is equipped with perforated collectors to allow the cut potatoes to be soaked in the liquid for the purpose of cleaning and anti-browning treatment. As a conclusion, this machine can minimize the time and manpower required to process the potatoes
Penggunaan Penguji Komponen Litar Kawalan Motor bagi Pelajar Program Sijil Teknologi Elektrik di Kolej Komuniti Tawau
Get PDFInnovation development in teaching and learning is a creative alteration carried out by a lecturer during a teaching and learning process to ensure Course Learning Outcome is achieved and generating students’ first class mind-sets, creativity and innovativeness. Motor Control Component Tester is an initiative of teaching and learning innovation development of a researcher as lecturer teaching Motor Control Course for students of Certificate in Electrical Technology program at Kolej Komuniti Tawau, Sabah. This research is aimed to identify motivation level, suitability of the design and students’ understanding level while utilizing the Motor Control Component Tester in teaching and learning process. This research involved 48 students of Certificate in Electrical Technology program for Semester 2 of December 2018 session. Researcher has conducted a pilot study towards the students before carrying out the actual study to identify the credibility and the validity of the measuring instrument applied. As a result of the pilot study, a total of α=0.82 Cronbach Alpha is achieved. This result indicates high credibility of the measuring instrument applied in the study. Therefore, the analysis of this study shows a significant relation between three domains in elevating students’ skills and understanding that are using the Motor Control Component Tester as facilitator in teaching and learning process
Rubrics Development on Product Design Innovation: Validity and Reliability Tests
Get PDFThe skills in producing ideas of innovation at early stages of product design or concept are subjective in nature. Therefore, evaluation in gauging the best ideas for product innovation could be conducted through lecturers’ evaluation by using instruments based certain innovation criteria definitions. This study produces one instrument on evaluating ideas of product design innovation by independent raters (lecturers) using a rubric scale. This instrument consists of four main constructs as the basis of product innovation ideas evaluation which is novelty, quantity, variety and quality. In order to obtain the validity and reliability of instrument developed, Many-Facets Rasch Measurement (MFRM) was used with the following three facets: ideas of product design innovation, items assessed and raters (lecturers) involved. These were later analysed with Facets 3.71.4 software. Raters were two product design lecturers at Ministry of Education (MoE) community college and subject assessed was thirty ideas of product design innovation that use Computer-Aided Design (CAD) and traditional method (sketching) in one of MoE community colleges. Findings from the pilot study show individual reliability for the four constructs were within the range 0.82-0.90. Validity of items assessed was also investigated through data fitting of the Rasch Measurement Model by observing the values of outfit and infit mean-squares. Two items were dropped and another two items were modified based on results obtained. Inter-rater agreements among raters were between 60.6% and 75.0% and all the percentages indicate values beyond expected percentage by Rasch Measurement Model. Findings from this pilot study indicate that Rubric instrument for evaluating ideas of product design innovation based on rubrics scale is appropriate to be used to assess ideas on product design innovation generated by design students
Use of Durian Pectin, Rice Husk Ash (RHA) and Eggshell Powder (ESP) in Concrete
Get PDFCement is one of the important materials in concrete mixture and use for building construction. High demand for cement usage due to the rapid development of construction in the country needs to be addressed. Therefore, the use of alternative cement such as fly ashes is being boosted by the increasing focus on reducing carbon emissions and also increasing owing to the extensive use of green cement. The objective of this study is to identify the optimum ratio of durian pectin to rice husk ash and durian pectin to eggshell powder as partial replacement of cement. Compressive strength and water absorption test were carried out at concrete laboratory on hardened 150mm³ concrete cubes for 7, 14 and 28 days of curing. Concrete made with 5%, 7.5% and 10% were replaced with durian pectin, RHA and ESP by the weight of cement. The results show that the sample consist of 5% of durian pectin and 5% of RHA is the best ratio replacement of cement in concrete because it achieved a good result in workability (slump test), compressive strength and water absorption are 85mm, 27.5 N/mm² and 6.5% respectively
Performance Evaluation of PEGASIS and LEACH Protocol Using MATLAB Based Simulation Platform
Get PDFWireless sensor network (WSN) is widely considered as one of the most important technologies for the twenty-first century. In the past decades, it has received tremendous attention from both academia and industry all over the world. In WSNs, topology plays an essential part in minimizing different imperatives, for example, latency, restricted vitality, computational asset emergency and nature of the correspondence. There are many types of routing protocols in WSN such as hierarchical protocols consist of LEACH and PEGASIS routing protocol. This study aims to evaluate the performance of PEGASIS and LEACH protocol using MATLAB based simulation platform. Simulation results showed better performance for PEGASIS even both protocols fall under hierarchical category. In this project describe PEGASIS a greedy chain protocol that is near optimal for a data-gathering problem in sensor networks. PEGASIS outperforms LEACH by minimizing the distance non leaders-nodes must transmit, limiting the number of transmission and receives among all nodes, and using only one transmission to the BS per round. PEGASIS protocol achieves an increases of 2 times higher than LEACH protocol in term of energy consumption. For the system lifetime PEGASIS perform 30% better than LEACH and in terms of delay LEACH introduces less delay than PEGASIS
Effect of Heat Treatment Temperature on Mechanical Properties and Micro Structure of DIN 1.2316 Steel
Get PDFThe effects of varying temperature of heat treatment of DIN 1.2316 steel to mechanical properties and microstructure have been investigated. The samples were heated by using electrical furnace at 820°C, 860°C, 900°C for 1 hour, after that the samples were quenched in water. Then heat treated and quenched samples were measured vickers hardness and impact strength, the microstructure of samples were observed using optical microscope. . The test results show that with increasing heat treatment temperature can increase the value of vickers hardness. The hardness value before heat treatment was only 386.00 kgf / mm2, but the hardness value of samples after heat treatment at 8200C, 8600C, 9000C are respectively 391.29 kgf /mm2, 470.57 kgf /mm2 and 488.52 kgf /mm2. While the impact energy value tends to decrease with increasing heat treatment temperature, where the impact energy before heat treatment is 1550.00 J /mm2, and impact energy value of samples after heat treatment at 8200C, 8600C, 9000C respectively are 1320.15 J /mm2, 1110.35 J /mm2 and 950.00 J /mm2. The sample before heat treatment according to observation with optical microscope and XRD has ferrite (α-Fe) and pearlite (γ-Fe) phases. But the samples after the heat treatment process show ferrite and pearlite phase tends to decrease and emerging new phase martensite (α\u27- Fe). This martensite phase causes the material to become hard
A Water Supply System to Meet The Demand in The Hostels at The Politeknik Sultan Abdul Halim Mu\u27adzam Shah (Polimas), Jitra, Kedahm
Get PDFThis is a study on a water supply system in a building to meet the requirements of the occupants in the students’ hostels at the Politeknik Sultan Abdul Halim Mu’adzam Shah (POLIMAS) Jitra, Kedah, Malaysia. The objective of this study is to identify the factors relating to the current inadequacy of the water supply and to suggest solutions to remedy the problem therein in the hostels in POLIMAS. The problem is the inadequacy of water supply during the peak hours of water usage by the students. The research method for the study employed involves the use of questionnaires and the analysis of data collection carried out among the hostel student population to identify the problems faced by them. From the study and analysis of the data collected, a design calculation is then used to determine the capacity that will meet the water supply requirements for the hostels. The choice of the type and size of the water supply storage tank is then determined from the calculations made to solve the water shortage problem. This is followed up with the determination of the amount of water necessary to maintain a uniformed and balanced water supply throughout the whole hostel complex. A steel panel water storage tank is proposed to overcome the problem of water shortage. This supply tank will only operate to meet any shortfall of water supply to the main storage tank during the peak periods of water demand with the help of a pumping system which will send up water to the main tank in the hostel complex to ensure adequate water supply at all times in the hostels
Kajian Sistem Penyejukan Radiasi Secara Prototaip Bangunan
Get PDFGenerally, Malaysia is located in a hot and humid zone. Conventional ventilation systems with mechanical ventilation are used to obtain cool indoor air temperature. However, in special areas such as microscope transmission labs and hospitals, static airflow cooling is difficult to apply due to the large space required. Radiant cooling systems are therefore adapted to replace modern air-conditioning systems. The systems typically utilize a hydraulic system, which is to cool the air by circulating cold water in the pipes through floor, ceiling and wall. When the surface temperature of the radiation is cooler than the ambient temperature, the heat from that environment is absorbed into the water stream and indirectly cools the space. In this situation, the basic concept of heat transfer is applied where the heat moves from hot surface to cold surface. In this study, three stages of the methodology will be conducted. The first stage is to design a building prototype. Later from this design, a fabrication process will be carried out to complete the prototype building according to the specifications given. The final stage involves experimental work, in which all the measurements needed will be taken. Thus, the water temperature at the inlet flow and the wall surface temperature are recorded. As the temperature of the inlet water decreases, the surface temperature decreases as well as cooling load requirements has been achieved. Temperature differences at the end of the study indicate that cooling in that specific area has taken place
Kesan Penggunaan Sisa Precious Slag Ball Pada Sifat Konkrit
Get PDFConcrete is one of the most used structures in building construction due to its durability and strength. This research is to study the effects of Precious Slag Ball (PS Ball) to the characteristics of concrete. PS Ball is a waste product from the metal surface cleaning activity. The main objective of this research is to obtain the maximum compression for conrete as well as the density and water absorption rate. Conrete cube sample is 100mm x 100mm x 100mm is produced using concrete mixture without course aggregate meanwhile the fine aggregate for the conrete mixture is replaced with PS Ball at pre determined percentage of 0%, 10%, 20%, 30%, 40% and 50%. In conclusion, the maximum compressive strength achieved is 29.2 Mpa with 5% water absorption and density 2191.3 kg/m3 is for conrete mixture with 20% PS Balls. Therefore, the use of PS Ball as a substitute for aggregates in concrete mixture strengthens the concrete even more