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Teknomekanik
Published by Universitas Negeri Padang
ISSN : 26219980     EISSN : 26218720     DOI : 10.24036/tm.
Core Subject : Engineering,
Mechanical Engineering
Teknomekanik is an international journal that publishes peer-reviewed research in engineering fields (miscellaneous) to the world community. Paper written collaboratively by researchers from various countries is encouraged. It aims to promote academic exchange and increase collaboration among scientists, engineers and researchers to support sustainable development goals.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 6 Documents
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Search results for , issue "Vol 2 No 1 (2019): Teknomekanik" : 6 Documents clear
Effect of Cutting Speed, Feed-rate and Depth of Cut on the Surface Roughness Level of ST-37 Steel in Shaping Proces Krisko Govinda; Abd Aziz
Teknomekanik Vol 2 No 1 (2019): Teknomekanik
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (361.45 KB) | DOI: 10.24036/tm.v2i2.2372

Abstract

The application in the industrial world, the use of scrap machines by operators pay little attention to the surface roughness of objects produced. The roughness that occurs is influenced by machining parameters such as cutting speed, feed motion, and cutting thickness. The purpose of this study was to determine the effect of cutting speed, feed motion and cutting thickness on the level of roughness of ST 37 steel surface in the scrap process. This type of research is an experimental method that determines the level of steel surface roughness from variations in cutting speed, feed motion, and cutting thickness to ST 37 steel surface roughness. The material used is 70 mm long, 25 mm wide, and 25 mm high. Data processing results from the level of roughness testing using the SPSS version 16.0 application. The results of data analysis showed (1) the significant effect of cutting speed on the level of surface roughness of 5.5%. (2) the significant effect of feeding on the level of surface roughness of 60.9%. (3) significant effect between cutting thickness on surface roughness level of 0.2% (4) significant influence between cutting speed, feed motion, and cutting thickness on the level of surface roughness with a 66.6% influence. Based on data analysis, it can be concluded that cutting speed, feeding motion, cutting thickness are factors that influence the level of steel surface roughness of ST 37 in the scrap process. Keywords: Cutting Speed, Feed Rate, Depth of Cut, Roughness Level, Experimental.
Design of Catamaran Ship Using Solar Power Ozi Ramadhan; Syahril Syahril; Hendri Nurdin; Purwantono Purwantono
Teknomekanik Vol 2 No 1 (2019): Teknomekanik
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (300.416 KB) | DOI: 10.24036/tm.v2i1.2472

Abstract

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.
Analysis Physical and Mechanical Of Particle Boards Raw Materials Nipah Fruit Fiber M Saddikin; Hendri Nurdin; Hasanuddin Hasanuddin; Primawati Primawati
Teknomekanik Vol 2 No 1 (2019): Teknomekanik
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (200.978 KB) | DOI: 10.24036/tm.v2i1.2672

Abstract

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.
Manufacture and Testing of Belt Grinding Development Ikhsan Zulmaidas; Syahrul Syahrul; Ambiyar Ambiyar; Yufrizal A
Teknomekanik Vol 2 No 1 (2019): Teknomekanik
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (155.391 KB) | DOI: 10.24036/tm.v2i1.2972

Abstract

The lack of utilization of belt grinding, especially in the world of education due to lack of public understanding of the workmanship of belt grinding. This study discusses the process of developing belt grinders from the manufacturing stage to testing. The purpose of this study is to develop belt grinders of existing forms, to maximize their function. The belt burrs resulting from this development have three functions, namely the vertical, angle and horizontal cutting function. This belt burrs are also equipped with speed control. With the development of this belt grinder, it is hoped that it will add to the public's insight into the belt grinding function and better assist the work of grinding, especially grinding finishing.
Study of Ship Design Maninjau Lake Tourism by Using Catamaran Hull Type and Fiberglass Material Ar Trisyaldi; syahril syahril; Purwantono Purwantono; Waskito Waskito; Primawati Primawati
Teknomekanik Vol 2 No 1 (2019): Teknomekanik
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (189.727 KB) | DOI: 10.24036/tm.v2i2.3072

Abstract

Maninjau lake uses ships designed in a simple way without significant innovation from time to time. This case is caused by design methods that are based on hereditary knowledge from generations to generations, so that the ships that are made tend to have the same shape and size. Innovation is needed to get a higher level of efficiency and effectiveness on a ship. The innovation that needs to be done is the design of ships with a multi-hull shape or catamaran. The pre-design of the catamaran hull is based on using the comparation method as the dimension ratio of the ship, so that the dimensions of the ship are LWL = 4 m; LPP = 3.96 m; B = 1.7 m; B1 = 0.36 m; D = 0.7 m; d = 0.307 m. After that, testing the resistance (resistance) while determining the amount of Power needed. The next step is to analyze Stability and Seakeeping to determine the efficiency and effectiveness of the hull type. Analysis carried out on this type of hull was applied to several models, then the best hull design was found. Each design is distinguished by hull shape, but has the same displacement which is equal to 0.448 tons. The first model of the catamaran hull with the type of Flat Inside Symmetry; second with the type of symmetry Flat Outside; and the third type with gastric Asymmetry.
Welding Competence Training at Dropout Youth Refdinal Refdinal; Junil Ardi; Purwantono Purwantono
Teknomekanik Vol 2 No 1 (2019): Teknomekanik
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (780.898 KB) | DOI: 10.24036/tm.v2i2.4072

Abstract

The problem with partners is drop out youth who do not have competence. The condition of the community dropping out of school and working as unskilled labourers has an impact on the low level of public welfare. The distance between the Dharmasraya district and the provincial capital has an impact on the contrast of the quality of education carried out which causes the community to not understand the importance of education. So that some of the human resources in Dharmasraya have become manual labourers in plantations and factories. The purpose of implementing this service activity is to provide a solution to the problems faced by the community, especially for school dropouts. Most of the dropout youths who are junior high school (SMP) level do not have special competencies that make them have added value. The work carried out by this young man is only limited to gardening and does not guarantee economic prosperity. Through this service activity, TIM strives to provide competency in the welding field that can be used to open a business that is much needed by the community. The training activities were designed for 3 days which will be held from October 12 to October 14 2018. The speakers in this activity were Drs. Purwantono, M.Pd, who has a BNSP level I welding certificate and the second speaker is Junil Adri, M.Pd.T who has a BNSP level III welding certificate. On the first day, the speaker will convey the basic concepts in the welding process and demonstrate how to make weld grooves and connect the plate in the welding process. On the second day, the speakers began to invite participants to design products that could be made through welding activities in accordance with the needs of the community. In this activity, TIM directed to make a trellis fence. TEAM began to guide participants in the process of making a trellis. On the third day, the TEAM provided direction on how to weld entrepreneurial opportunities in the field. The chairperson of the service with TIM asked the kenagarian to be able to accommodate the birth of new entrepreneurs for youth who could make independent and productive people.

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