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Jurnal Teknik Mesin Sinergi

Sinergi
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Published by Politeknik Negeri Ujung Pandang

ISSN : 16931548 EISSN : 26849372 DOI : http://dx.doi.org/10.31963/sinergi

Core Subject : Science, Engineering,

Energy Mechanical Engineering

Jurnal Teknik Mesin Sinergi Politeknik Negeri Ujung Pandang mempublikasikan hasil penelitian pada Bidang Teknik Mesin dan Energi.

Arjuna Subject : Teknik (semua kategori) - Teknik Mesin

Articles 13 Documents

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Search results for , issue "Vol 17, No 1 (2019): April 2019" : 13 Documents clear

Analisis Sifat Mekanik Hasil Pengelasan SMAW dengan Akar Las Tig dan Las SMAW pada Pipa API 5L Muas M; Muhammad Arsyad Suyuti; Rasul Rasul; Patta Hajji
Jurnal Teknik Mesin Sinergi Vol 17, No 1 (2019): April 2019
Publisher : Politeknik Negeri Ujung Pandang

The purpose of this research is to know the mechanical properties of the welds due to the current variation of welding joint API 5L using TIG and SMAW welding root methods. Preparation of specimens of pipe API 5L PSL1 grade X56 (Ø 177.8 mm, length 200 mm, width 7 mm), then specimens preparation were made in a single V 600, root gap 2mm, root face 2mm. Filling the welding roots with TIG welding and SMAW using electrodes E7018 with a current variation 70A, 80A, 90A. Mechanical tests consist of tensile, bending and hard test. The results showed that the quality of a good TIG root weld at 70A, the highest tensile strength of the weld joint 52.27 kgf/mm2 (70A), the highest hardnest 164,217 HRB (90A), the bending strength 1.123,061 N/mm2 (70A) using face bend method and 1,172,959 N/mm2 with root bend. In SMAW root welding, the highest tensile strength 54.27 kgf/mm2 (70 A) , the highest hardnest 158.717 HRB (70 A), the highest bending strength 1.115,611 N/mm2 (70 A) using face bend method, and 1.161,748 N/ mm2 with root bend.

Pemanfaatan Thermoelectric Generator pada Pembangkit Listrik Tenaga Surya (PLTS) Sukma Abadi; Makmur Saini; Andar Triwijaya; Fina Pratiwi
Jurnal Teknik Mesin Sinergi Vol 17, No 1 (2019): April 2019
Publisher : Politeknik Negeri Ujung Pandang

Pemanfaatan Thermoelectric Generator pada Pembangkit Listrik Tenaga Surya (PLTS)

Rancang Bangun Alat Uji Tarik Serat Alam Muhammad Arsyad; Jeremiah Ritto; Abdul Rachman; Dewi Rachma Ayu Lestari; Edyson Palembangan
Jurnal Teknik Mesin Sinergi Vol 17, No 1 (2019): April 2019
Publisher : Politeknik Negeri Ujung Pandang

The aim of this research are to design and to make natural fiber tensile strength test as well as to recognize the characteristics of natural fiber. The specimen testing is done using ASTM 3379-02 standard. The methods that we used are designing, making, assembling and testing. This equipment is designed simply by using water as a load. When used, the water continues to be flowed to the reservoir which is connected in such a way that the fiber breaks. When the fiber breaks, the mass of water is weighed as a burden which causes the fiber to break. Tensile strength of the results of testing equipment is 282.35 N/mm2 compared with the tensile strength of the results of the tensile test equipment at UNM 186.42 N/mm2 and the value of the tensile strength of the literature 284.08 N/mm2. The value obtained is between the tensile strength of the results of the UNM tensile test equipment with the tensile strength of the literature. According to these results it was concluded that the tensile test equipment made can be used to determine the tensile strength of natural fibers, one of which is coconut fiber. The natural fiber tensile test equipment can be used to determine the tensile strains of coconut fiber.

Analisis Performansi Turbin dan Generator di PLTP Lahendong Unit 1 Tomohon La Ode Musa; Abdul Rahman; Ikral Gapshel; Triska Sombokanan
Jurnal Teknik Mesin Sinergi Vol 17, No 1 (2019): April 2019
Publisher : Politeknik Negeri Ujung Pandang

Lahendong Geothermal power plant is one of the Geothermal power plants in Indonesia which has four units and it be able to generate 4 × 20 MW of electrical energy by utilizing geothermal energy in the form of steam that supplied from wells created by Pertamina. The aim of this study is to determine the performance of the turbine and generator unit 1 which has been operated since 2001 by using thermodynamic analysis method calculating the steam quality and turbine work. Afterwards, turbine efficiency, turbine power and generator power were obtained. The average quality of geothermal steam at Lahendong in 2001 and 2015 were 0.8002 and 0.8065. Turbine’s performance decreased in 2001 (664.021 kJ / kg) until 2015 (640.799 kJ / kg), with the highest generator rotation tolerance of 0.9%.

Modifikasi Alat Pemintal Benang Sutera Untuk Industri Rumah Tangga Abdul Salam; Muh Iswar; Bensar Pali; Agustinus Anggai; Janchristo Rantemangnga
Jurnal Teknik Mesin Sinergi Vol 17, No 1 (2019): April 2019
Publisher : Politeknik Negeri Ujung Pandang

This study aims to determine the yarn spinning time, spinning equipment manufacturing costs, and haspel shaft spinning. Basic design is done by data collection, direct visits to the silk farmers' groups, tool design, tool manufacturing, performance testing tools, analysis, calculating costs and tool manufacturing. In accordance with the testing of the spinning machine, the total working time is 8 hours / day for 3.36 kg of silk yarn, the spinning equipment manufacturing cost is Rp. 5,102,534.71. Whereas BEP is achieved when the sale of spinning machines is at least 1 unit / month or when income is Rp. 5,621,064.

Pengaruh Sudut Punch dan Ketebalan Pelat terhadap Springback pada Bending V Rusdi Nur; Muhammad Arsyad Suyuti; Muh Reza B; Misbahuddin Misbahuddin
Jurnal Teknik Mesin Sinergi Vol 17, No 1 (2019): April 2019
Publisher : Politeknik Negeri Ujung Pandang

The bent plate is inseparable from the phenomenon that determines the size of the resulting bending angle. This phenomenon is called springback. Springback is a condition that occurs on a sheet plate when bending is done where after the punch load is removed the bent sheet plate has a tendency to return to its original form. Mini brake bending V tool with a hydraulic jack system produces springback of 1-5 degrees for punch angle 85 ° radius 2.5 mm and carbon steel material St 42 at thickness 3, 4 and 5 mm. Therefore, this study was conducted to find out how the influence of punch angle and plate thickness on springback. The limitation problem in this study is the thickness of the plates used 2 and 4 mm. The type of method used is bending V bottoming with a die angle of 90 °, the punch angle used is 80, 85, and 90, the punch radius used is 2, 4 and 6 mm, and the plate material used is carbon steel. The research method starts from designing die set, punch and die test aids, and making test specimens, then bending test, bending angle and springback measurements are carried out. Based on the research conducted, the greater the punch angle, the smaller springback produced and the thicker the plate, the smaller springback produced tends to be smaller, where the smallest springback is obtained on a plate thickness of 6 mm with a punch angle of 90 ° 4 mm radius obtained -0.31o.

Analisis Perancangan Penstock PLTMH di Eremerasa Kabupaten Bantaeng Dengan Menggunakan ANSYS Suryanto Suryanto; Apollo Apollo; Muhammad Julham Hamzah; Titiek Israwati
Jurnal Teknik Mesin Sinergi Vol 17, No 1 (2019): April 2019
Publisher : Politeknik Negeri Ujung Pandang

Penstock acts as a distributor of fluid flow between the tank and the turbine. The aims of this study are to determine the characteristics of the pressure and the water velocity and flow pattern that occurs in the penstock and to determine the efficiency of hydraulic optimum turbine with design power 40 kW. Characteristics are analyzed by simulation using Ansys fluent software. The simulation results assist in the design process and design of water turbines penstock accurately and shorten the time. Based on the simulation results in the penstock, the pressure varies on along the penstock and maximum occur on the inlet side (33652 Pa) and then gradually drops along the pipeline and reach the minimum conditions on the outlet side (2651 Pa). Characteristics of the fluid velocity tends to be constant from the inlet side to the outlet side (2,46 m/s), but there are fluctuations in flow velocity in the bend of 10° and 45°. The pattern of the flow of water along the penstock pipe turbulent, especially in connection with angle bends 45° and 10°. Angle turn follow the existing topography. Additionally, it obtained maximum turbine power of 50,617 kW with hydraulic efficiency of 68.93% and the effective height of the turbine is equal to 17,234 m and a discharge of 0,3 m3/s.

Analisis Pembangkit Listrik Berbasis Flywheel Jumadi Tangko; Remigius Tandioga; Ismail Djufri; Riza Haardiyanti
Jurnal Teknik Mesin Sinergi Vol 17, No 1 (2019): April 2019
Publisher : Politeknik Negeri Ujung Pandang

Flywheel is a rotating mechanical device, which is generally used on four-wheeled vehicles. Flywheel has a moment of inertia that is able to withstand changes in rotational speed. The energy in flywheel is mechanical energy. This mechanical energy will be converted by generators into electrical energy. At the flywheel-based power plant, tests are carried out in the form of rotation, the generator power of the generator under no load or load conditions, and the time needed for this generator to survive. The results showed that the ability of the flywheel-based power plant in the condition without a backup supply to the motor in the condition of a generator without a load is able to generate power of 860.1 W for 22 seconds, while in a load-bearing generator capable of generating electricity by 708.75 W for 18 seconds

Desain Konstruksi Press Tool Sebagai Alat Bending Bentuk V Dengan Garis Bending Max. 300mm Muhammad Arsyad Suyuti; Muhammad Iswar; Rusdi Nur; Erniyanti Erniyanti
Jurnal Teknik Mesin Sinergi Vol 17, No 1 (2019): April 2019
Publisher : Politeknik Negeri Ujung Pandang

Nowadays, the process of metal forming in the machining industry and welding workshop is developing very rapidly especially in the plate bending process. The bending process is the formation of metals which generally use plates or rods of both ferrous and non-ferrous metal materials by bending, which in the bending process will cause stretching or stretching on the neutral plane axis along the bending area and produce a straight bend line. The use of appropriate technology machines has been widely used to increase productivity, efficiency, and effectiveness in the production process for community businesses, especially those in the regions. One of the appropriate technologies that might be applied in the bending process is a hydraulic jack press that is equipped with a press tool. Press tool is one type of product forming, cutting and bending tools from the basic material of sheet plates whose operations are using a press tool. The results of the design of press tool bending tool V have a length of 300 mm bending line, 33 mm bending width, 110 mm spring height, free step distance of 19 mm. The punch angle used is 85⁰ with the punch radius used is 1.5 mm while the die angle is 85⁰. The selected punch and die material is Steel AISI 1045 HV HR.

Analisis Kinerja Pembangkit Listrik Tenaga Mikro Hidro Desa Tombolo Pao Kabupaten Gowa Syahrial Syahrial; Prayudi Azis; Chandra Bhuana; A. M. Shiddiq Yunus
Jurnal Teknik Mesin Sinergi Vol 17, No 1 (2019): April 2019
Publisher : Politeknik Negeri Ujung Pandang

This research is a descriptive study, studying to determine the large discharge during the dry season, power output and efficiency as well as the suitability of the selection of penstock from the Micro Hydro Power Plant, Buttono Pao Village, Gowa Regency. In this research, the method used is descriptive analysis. This analysis provides an explanation or description of the conditions of the Power Plant starting from power generation and penstock performance evaluation. The results showed that the discharge in the carrier channel in the dry season from May to July 2016 was appropriate, which was between 0.116 m3 / s - 0.187 m3 / s and obtained the power generated by the output generator 4322.32 Watt to 4675.73 Watt with system Efficiency spent between 39.43% - 42.66%. From this value obtained from the value of efficiency in the Micro Hydro Power Plant (PLTMH) Tombolo Pao Village, Gowa Regency is less efficient in increasing electricity power. This is because this PLTMH has started operating since 2006 and in its construction design is still very simple. In terms of Penstock analysis the penstock material used is PVC pipe with a diameter of 8 inch or 0.216 m. After calculation, the diameter of the penstock is obtained based on the measurement used by the debit which has been obtained 0.254 m, while the flow velocity of the penstock is 3.205 m / s. To get the hfriction value, the required parameters are hwall loss and hturb loss. The values are 15,868 m and 0,732 m, the hfriction value is 16,6 m.

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Reviewer

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Contact Name
Muhammad Ruswandi Djalal

Contact Email
wandi@poliupg.ac.id

Phone
+6285250986419

Journal Mail Official
sinergi@poliupg.ac.id

Editorial Address
Jalan Perintis Kemerdekaan KM.10 Tamalanrea, Makassar 90245

Location
Kota makassar,

Sulawesi selatan

INDONESIA

Abstract

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Muhammad Ruswandi Djalal

Contact Email wandi@poliupg.ac.id

Phone +6285250986419

Journal Mail Official sinergi@poliupg.ac.id

Editorial Address Jalan Perintis Kemerdekaan KM.10 Tamalanrea, Makassar 90245

Location Kota makassar, Sulawesi selatan INDONESIA

Abstract

Abstract

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Abstract

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Abstract

Abstract

Abstract

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Abstract

Contact Name
Muhammad Ruswandi Djalal

Contact Email
wandi@poliupg.ac.id

Phone
+6285250986419

Journal Mail Official
sinergi@poliupg.ac.id

Editorial Address
Jalan Perintis Kemerdekaan KM.10 Tamalanrea, Makassar 90245

Location
Kota makassar,

Sulawesi selatan

INDONESIA