Articles
<![CDATA[Design of Catamaran Ship Using Solar Power ]]>
<![CDATA[Ramadhan, Ozi]]>;
<![CDATA[Syahril, Syahril]]>;
<![CDATA[Nurdin, Hendri]]>;
<![CDATA[Purwantono, Purwantono]]>
<![CDATA[ Teknomekanik Vol. 2 No. 1 (2019): Regular Issue ]]>
Publisher : <![CDATA[Universitas Negeri Padang ]]>
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DOI: 10.24036/tm.v2i1.2472
<![CDATA[Solar power is a renewable energy that can replace oil fuel as the main energy of the ship. The use of fuel oil can worsen the environment in the Maninjau lake tourism area. This paper aims to develop a ship propulsion design using solar power with the main size of the WL bilge Length 367.33 cm, Width (B) 170 cm, Height (H) 70 cm, Draught (T) 30.7 cm. To produce the power needed at a speed of 6 knots, using the method of theoretical analysis by counting, total energy and solar panels to convert sunlight into electrical energy. The result of calculating the total energy needed to reach 6 knots is 0.932 kW. The solar panels needed to produce the power are 4 pieces with a capacity of 100 Wp. This system does not use an inverter because it uses a DC electric motor as a vessel driver. The design of a solar-powered boat can be an option for the community as an environmentally friendly tourist ship without fuel.]]>
<![CDATA[Analysis Physical and Mechanical of Particle Boards Raw Materials Nipah Fruit Fiber ]]>
<![CDATA[Saddikin, M]]>;
<![CDATA[Nurdin, Hendri]]>;
<![CDATA[Hasanuddin, Hasanuddin]]>;
<![CDATA[Primawati, Primawati]]>
<![CDATA[ Teknomekanik Vol. 2 No. 1 (2019): Regular Issue ]]>
Publisher : <![CDATA[Universitas Negeri Padang ]]>
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DOI: 10.24036/tm.v2i1.2672
<![CDATA[The raw materials of the timber industry, especially furniture, are increasingly difficult to obtain in the quantity and quality needed. The development efforts carried out were utilizing Nipah coir waste as a raw material for making particle boards. Particle boards are panel boards made of wood particles or materials containing lignocellulose. Nipah plants contain 27.3% lignin and 36.5% cellulose which has the potential to be used as raw material for particleboard production. This study aims to reveal the physical and mechanical properties of particleboards made from Nipah fruit fibre with adhesive using tapioca flour. The making of particle board is done with a ratio of 90%: 10%, 80%: 20%, 70%: 30%, 60%: 40%, by giving a pressure of 100 kg / cm2. Particle testing is carried out according to the JIS A 5908 standard (2003). From this study, the optimum results were obtained in variations of 60%:40%. The particle physical properties which have an average density value of 1.15 gr / cm3 and an average moisture content of 5.8%. While the mechanical properties obtained by the value of Modulus of Elasticity an average of 21,188.93 kg / cm2. This shows the particle board variations of 60%: 40% produced to meet the JIS A 5908 (2003) standard. Based on the analysis of the quality variations 60%: 40% of particle boards can be recommended as raw materials for interior furniture.]]>
<![CDATA[Porosity Defect Analysis in ST 37 Steel Welding Joints Using the Dye Penetrant Method ]]>
<![CDATA[Wari, Alan]]>;
<![CDATA[Nurdin, Hendri]]>;
<![CDATA[Ya, Kyaw Zay]]>
<![CDATA[ Teknomekanik Vol. 3 No. 1 (2020): Regular Issue ]]>
Publisher : <![CDATA[Universitas Negeri Padang ]]>
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DOI: 10.24036/tm.v3i1.5272
<![CDATA[The procedures in the world of welding all look simple, but all welding that looks simple must have extensive knowledge in accordance with the definition of welding. This welding is a permanent connection technique, when the welding process takes place the results do not always meet the quality standards that have been determined. The cause of the welding results that do not meet the quality standards in the form of dirt on the material when before welding and so forth. The purpose of this study is that the specimen specimens are accepted according to the welding institute's standard acceptance criteria (TWI) This research uses st 37 steel by using SMAW welding electrodes LB 52U (E 7016) diameter 2.6mm for root, and LB 52U (E 7016) diameter 3.2 for fillers and caping with welding position 1G. Testing of welding results is carried out by the non destructive test of the dye penetrant method whose inspection results are determined based on the standard ASME. The results of this test study discontinuity in the form of porosity on the surface of the welding results in specimen 1, namely material contaminated by dirt, there are porosity defects scattered with a length of 6mm and porosity of 10mm so based on the standard TWI both test specimens were declared rejected, and in specimen 2, material that was not contaminated with impurities, there were porosity defects of 2mm and 2.5mm so that according to the standards of the two specimens the test was accepted. For the results of welding defects that are rejected can still be corrected by linking to the defects that, and can be done welding again.]]>
<![CDATA[Characteristics Particleboard Made From Areca Fiber With Tapioca and Gambier Adhesive ]]>
<![CDATA[Nurdin, Hendri]]>;
<![CDATA[Waskito, Waskito]]>;
<![CDATA[Siregar, Batu Mahadi]]>
<![CDATA[ Teknomekanik Vol. 4 No. 1 (2021): Regular Issue ]]>
Publisher : <![CDATA[Universitas Negeri Padang ]]>
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DOI: 10.24036/teknomekanik.v4i1.9372
<![CDATA[The development of engineering materials has increased its use in various fields. The engineering material is particleboard made from areca fiber which is processed with technology. Areca fiber as waste has the potential to be used as an engineering material. The purpose of this study was to obtain the characteristics of the particleboard following the quality standards of JIS A 5908-2003 and SNI 03-2105-2006. The process of making particleboard by mixing particles of areca fiber and adhesive then compacting it. The adhesives used are tapioca and gambier. The concentration of areca fiber particles is 90%, 80%, 70%, and 60%. From this research, it was found that the characteristics of the particleboard using tapioca adhesive according to the quality standard and the gambier adhesive particle board did not meet the standard quality. This particleboard can be used as a raw material for making interior furniture instead of wood.]]>
<![CDATA[Analysis of Tensile Strength of Citronella (Cymbopogon Nardus) Fiber Reinforced Composite Materials ]]>
<![CDATA[Ardi, Julio Lukmanul]]>;
<![CDATA[Nurdin, Hendri]]>;
<![CDATA[Arafat, Andril]]>;
<![CDATA[Primandani, Sri Rizki Putri]]>
<![CDATA[ Teknomekanik Vol. 4 No. 2 (2021): Regular Issue ]]>
Publisher : <![CDATA[Universitas Negeri Padang ]]>
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DOI: 10.24036/teknomekanik.v4i2.10472
<![CDATA[The use of synthetic fibers in composite materials has a negative impact on the environment. One way to reduce this impact is to replace synthetic fibers with natural fibers. A natural fiber that has the potential as a mixed material in the manufacture of composite materials is citronella (Cymbopogon nardus) fiber. This study aims to determine the effect of volume fractions 40%, 50%, 60%, and 70% of citronella fiber with polyester resin matrix BQTN 157 on tensile strength. The process of making composites used the hand lay-up method. The specimen was formed according to the ASTM D3039 standard and the tensile strength of the specimen was tested by using a Universal Testing Machine (UTM). From the results of the study, the maximum tensile strength was found in the fiber volume fraction 70% of 77.35 MPa, the strain is 6.57%, and the modulus of elasticity is 1.177 GPa. This study indicates that fiber volume fraction affects the tensile strength of composite materials. Hence, the manufacture of composite materials which have good strength is influenced by many things such as raw materials, matrices, mixture composition, and methods.]]>
<![CDATA[The investigation of physical dan mechanical properties of Nipah-based particle board ]]>
<![CDATA[Nurdin, Hendri]]>;
<![CDATA[Waskito, Waskito]]>;
<![CDATA[Fauza, Anna Niska]]>;
<![CDATA[Siregar, Batu Mahadi]]>;
<![CDATA[Kenzhaliyev, Bagdaulet Kenzhaliyevich]]>
<![CDATA[ Teknomekanik Vol. 6 No. 2 (2023): Regular Issue ]]>
Publisher : <![CDATA[Universitas Negeri Padang ]]>
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DOI: 10.24036/teknomekanik.v6i2.25972
<![CDATA[The excessive use of wood as a raw material in furniture industries has raised environmental concerns that have attracted the attention of many individuals. Consequently, various innovations have been explored in developing alternative materials for the furniture industry. One promising resource that has the potential to be developed as a raw material for furniture applications is Nipah palm husk. Nipah palm husk is classified as an agricultural waste that is barely used within society and industries. Hence, in this study, Nipah palm husk will be utilized as the primary material to fabricate particle board by involving tapioca as an adhesive. This research aimed to investigate the effect of tapioca concentrations on water absorption, modulus elasticity, modulus of rupture, and screw-holding strength of the produced Nipah palm husk particleboard. The results of this study showed that the particle board produced with a 40% tapioca adhesive concentration exhibited the most favorable physical and mechanical properties with a water absorption rate of 25%, an elastic modulus of 21188.93 kg/cm2, a modulus of rupture of 55.53 kg/cm2, and a screw holding power of 7.53 kg. The findings indicated that Nipah-based particle board has the potential to be developed as an alternative for the furniture industry.]]>
<![CDATA[Pengembangan Media Pembelajaran Berbasis Flip HTML 5 pada Mata Pelajaran Teknik Pemesinan Bubut di SMK Negeri 1 Padang ]]>
<![CDATA[Pramudya, Aldhi]]>;
<![CDATA[Ambiyar, Ambiyar]]>;
<![CDATA[Nurdin, Hendri]]>;
<![CDATA[Rahim, Bulkia]]>
<![CDATA[ MASALIQ Vol 4 No 1 (2024): JANUARI ]]>
Publisher : <![CDATA[Lembaga Yasin AlSys ]]>
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DOI: 10.58578/masaliq.v4i1.2160
<![CDATA[Flip HTML 5-based e-modules are a form of presenting material using smartphone and internet technology that can be used as an independent learning resource with a practical and easy-to-operate display. This study aims to analyze the development of learning media based on flip html 5 in lathe machining technique subjects at SMK Negeri 1 Padang. This type of research is development research or also known as R&D (Research and Development). This research uses the ADDIE development procedure. The data collection technique used a questionnaire to obtain information about the quality of the E-Module product developed in the form of a validation sheet. The instrument used by researchers in this development research is a validation guideline. From the results of the validation and practicality questionnaire, it can be concluded that the product based on Project Based Learning in the subject of Lathe Machining class XI Vocational High School is very feasible to use.]]>
<![CDATA[Modifikasi Ducted Fan untuk Kebutuhan Pengarah Aliran Semprotan Pupuk Cair ]]>
<![CDATA[Afabek, Randa]]>;
<![CDATA[Nurdin, Hendri]]>
<![CDATA[ MASALIQ Vol 4 No 1 (2024): JANUARI ]]>
Publisher : <![CDATA[Lembaga Yasin AlSys ]]>
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DOI: 10.58578/masaliq.v4i1.2643
<![CDATA[The use of agricultural drones has now experienced significant development. However, in its use it is often considered less effective because the liquid fertilizer sprayed through the nozzle tip is not on target. Then we need an additional tool in the form of a ducted fan which can increase the speed of the flow of fertilizer sprayed through the nozzle. This study uses a modification and reconstruction method of the ducted fan model that is already on the market so that it can be used as a flow guide. The modifications made are in the form of adding a cone with a size according to the hub and a height of 5 mm and a stator which is almost the same size as the fan which is around 65 mm and has the reverse direction, namely counter clock wise which functions as a flow guide. The results of the CFD research that has been carried out can be seen that the flow velocity at the outlet is 5.38394 m/s and the width of the flow which was originally 0.113791 m became 0.021235 m. Based on the results of the study it can be concluded that the fluid flow passing through the ducted fan looks smaller and directional so that it is in accordance with the purpose of the modifications that have been made and the flow speed increases so that the flow does not fly with the wind.]]>
<![CDATA[Simulasi Kekuatan Mata Pisau Traktor Pemanen Jagung dengan Variasi Sudut Menggunakan Solidwork ]]>
<![CDATA[Harahap, Doa]]>;
<![CDATA[Waskito, Waskito]]>;
<![CDATA[Nurdin, Hendri]]>;
<![CDATA[Rifelino, Rifelino]]>
<![CDATA[ MASALIQ Vol 4 No 1 (2024): JANUARI ]]>
Publisher : <![CDATA[Lembaga Yasin AlSys ]]>
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DOI: 10.58578/masaliq.v4i1.2644
<![CDATA[The corn harvesting tractor is one of the innovations in agricultural technology. However, there is a problem where the harvesting blade is broken and wears out quickly. One of the factors causing the problem is the angle of inclination of the blade. The smaller the angle of inclination of the blade, the sharper it is but the risk of being easily broken and worn out. For this reason, it is necessary to test the value of the blade slope which has a good strength value. Before this knife is made directly, it is necessary to design and simulate the strength of the blade with a variety of angles. Experimental testing requires expensive costs and a lot of time. The simulation carried out is a static simulation with the finite element method in the solidwork application with AISI 1045 material and 87.05 N force load. The blade with an angle of 310 is the best angle with the maximum value of stress at the connection of the shaft and knife with a value of 20.664 MPa and the displacement results are at a maximum value of 0.018 mm.]]>
<![CDATA[Analisis Pengaruh Jumlah Mata Pisau terhadap Daya dan Waktu pada Mesin Pengiris Bawang ]]>
<![CDATA[Saputra, Ilham Dwi]]>;
<![CDATA[Nurdin, Hendri]]>;
<![CDATA[Sari, Delima Yanti]]>;
<![CDATA[Adri, Junil]]>
<![CDATA[ MASALIQ Vol 4 No 1 (2024): JANUARI ]]>
Publisher : <![CDATA[Lembaga Yasin AlSys ]]>
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DOI: 10.58578/masaliq.v4i1.2667
<![CDATA[Shallot (Allium ascalonicum L) is a horticultural commodity classified as a spice vegetable. According to the Central Bureau of Statistics, shallot production in Indonesia in 2021 reached 2.01 million tons. This figure increased by 10.42 percent compared to the 2020 production which reached 189.15 thousand tons. Fried shallots are one of the processed forms of shallots which in the manufacturing process go through the slicing stage. Research on this onion slicing machine has been done a lot. Similar research discusses analyzing the development of a more efficient slicing machine. Things that must be considered in the process of making slicing machine construction are the number of blades, power consumption, time and slice results. The purpose of this research is to be able to analyze variations in the number of blades properly for onion slicing machines and find out their effect on power consumption, slicing time and slice results. This research uses the Experiment research method with the help of Microsoft Excel 2019 software. The results showed that the greater the variation in the number of blades, the lower the power consumption and slicing time and it was found that the level of damage to the sliced results was greater the more the number of blades. The conclusion of this research is that the greater the variation in the number of blades, the lower the power consumption and slicing time. The sharpness and length of the blade affect the results of sliced onions.]]>
