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Jurnal Teknik Mesin Sinergi

Sinergi
Website

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 417 Documents

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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 Variasi Arah Susunan Serat Sabut Kelapa terhadap Sifat Mekanik Komposit Serat Sabut Kelapa Muhammad Arsyad; Muhammad Arsyad Suyuti; Muh Farid Hidayat; Armila Sahi Pajarrai
Jurnal Teknik Mesin Sinergi Vol 12, No 2 (2014): Oktober 2014
Publisher : Politeknik Negeri Ujung Pandang

Serat sabut kelapa merupakan salah satu material serat alami atau biokomposit yang bersifat organik yang memiliki banyak kegunaan dan sangat mudah didapatkan di Indonesia.Penggunaan material serat sabut kelapa masih dalam kategori limbah yang belum banyak dimanfaatkan oleh skala industri sehingga perlu adanya pemanfaatan fiber berpenguat serat alami. Pemanfaatan serat alami tersebut dilakukan dengan pembuatan komposit melalui pencampuran antara resin polyester Yukalac® 157 BQTN-EX,serat sabut kelapa, dan katalis MEKPO (methyl ethyl keton peroxide). Tujuan penelitian ini adalah mengetahui pengaruh arah penyusunan serat terhadap sifat mekanik (kuat tarik, dan kuat lentur) komposit serat sabut kelapa, dan mengetahui kemungkinan serat sabut kelapa sebagai bahan pengisi komposit digunakan untuk pembuatan material kapal. Pada penelitian ini dilakukan pembuatan komposit jenis lamina dengan melihat variasi arah serat sabut kelapa sejajar 0˚, 0˚, sejajar 0˚, 45˚, sejajar 0˚, 90˚, dan komposit tanpa serat. Setelah pembuatan komposit kemudian diuji tarik sesuai standar ASTM D 638-02, dan diuji lentur sesuai standar ASTM D 790-03 sebanyak tiga kali pengujian setiap variasi arah serat. Hasil analisa data diolah secara statistik menggunakan metode deskriptif, dimana semua data yang diperoleh disajikan dalam bentuk tabel dan grafik. Adapun hasil perhitunganyang telah dilakukandidapatkan nilai rata-rata tegangan uji tarik komposit serat sabut kelapa yang optimal ialah arah sejajar 0˚, 0˚ sebesar 14,34 N/mm², dan untuk tegangan lentur komposit serat sabut kelap yang optimal ialah arah sejajar 0˚, 45˚ sebesar 23,34 N/mm². Dari hasil perhitungan tersebut, nilai kekuatan sesuai standar Badan Klasifikasi Indonesia masih jauh dari nilai yang didapatkan.

Disain dan Pembuatan Alat Atomisasi Aluminium Edi Iskandar; Hafrizon Hafrizon; Wiwiek Nuralimah; Hairul Arsyad; Lukmanul Hakim Arma
Jurnal Teknik Mesin Sinergi Vol 18, No 2 (2020): Oktober 2020
Publisher : Politeknik Negeri Ujung Pandang

Metal powder is the main raw material in the manufacture of powder metallurgy-based products. Powder-making is the initial step before the powder is packed and pressed in a mold to form the desired product. This research designs and fabricates an atomizer to produce powder from liquid aluminum using a pressurized water jet system. The research stage starts from the drawing of the tool design by considering the volume of liquid aluminum, the diameter of the outlet of liquid metal, the air pressure, and the angle of attack of the water beam. The second stage is the manufacture of the atomization chamber by referring to the design drawing by making parts of the tool/frame, liquid metal feeder parts, making the walls of metal plates, making the nozzle holder, and collecting the powder parts and the water exhaust channel. The third stage is assembly, which is to unite the main parts of the aluminum atomizer. The final stage is the testing of the atomization tool using 250 Psi pressurized water with variations of attack angle was 30˚, 35˚, 40˚, 45˚, and 50˚ with a metal descending channel diameter of 5 mm. The results showed that the 45o spray angle gave the highest percentage of powder amount and the lowest 40o angle resulted in the size of aluminum metal powder in the range 0.105 mm-0.5 mm. The size of the powder was obtained at an angle of attack of 35o, which is an average of 39.5 um, and the largest size of powder was obtained at a spray angle of 40o of 89.5 um. The resulting powder form is irregular in shape, flakes (flakes), spheroid (spherical), and spongy (hollow).

Analisis Posisi Dan Kecepatan Mekanisme Engkol Peluncur Dengan Program Komputer Mustafa Mustafa
Jurnal Teknik Mesin Sinergi Vol 6, No 1 (2008): April 2008
Publisher : Politeknik Negeri Ujung Pandang

Penelitian ini bertujuan untuk menganalisa posisi dan kecepatan seluruh kondisi batang sesuai dengan perubahan posisi batang 2 secara cepat pada suatu mekanisme engkol peluncur. Metode yang digunakan adalah metode bilangan kompleks dengan bantuan program komputer (Program Fortran 77). Hasil analisis yang diperoleh memperlihatkan bahwa metode ini dapat menghitung dan mengevaluasi seluruh kondisi batang seiring dengan perubahan posisi sudut batang 2 secara tepat dan cepat.

Analisis Pengaruh Perubahan Kecepatan Udara Pada Saluran Penampang Persegi Chandra Buana
Jurnal Teknik Mesin Sinergi Vol 7, No 2 (2009): Oktober 2009
Publisher : Politeknik Negeri Ujung Pandang

The study is aimed at finding out the influence of hydraulic radius to equivalent length of fully developed flow; and identifying the characteristics of boundary layer ‘development’ when it reaches the fully developed area as a result of hydraulic radius-changes. The hydraulic radius of each was made different, but their height was the same; i.e. 200 mm. The first wind tunnel’s width was 270 mm, the second was 320 mm, and the other one was 400 mm. The results reveal that there has been a correlation between the thickness of boundary layer, the length of wind tunnel, and Reynolds figures, that is, δ/x = 2.1525/Re0.3254; and the correlation between equivalent length and fully developed area was obtained by Le/Dh=3.10 Re1/6. This suggests that the Blansius formula can be applied to determining an equivalent of fully developed area in squared-surface wind tunnels, but the constant changed from 4.4 to. 3.10.

ANALISA SIFAT MEKANIK DAN STRUKTUR MIKRO HASIL PENGELASAN GESEK PIPA STAINLESS STEEL AISI 304L Muh Iswar; Abdul Salam; Aminuddin Aminuddin; Fahruddin Fahruddin
Jurnal Teknik Mesin Sinergi Vol 15, No 1 (2017): April 2017
Publisher : Politeknik Negeri Ujung Pandang

Friction welding is a metal connection that occurs due to heat caused by pressure/friction force due to rotation of metal one to other metal axis. In addition, spindle shaft with this process can minimize the shift axis of the welded material. The purpose of this research is to know the effect of variation of rotation speed and wrought time on mechanical properties (tensile strength, flexural and hardness) and microstructure of AISI 304L Stainless Steel pipe of friction welding. The experiment was carried out by stages of friction welding process on Pindad type lathes by varying the rotation (550 rpm, 1020 rpm and 1800 rpm) and wrought time (25 seconds, 35 seconds, 45 seconds) using stopwatch. The axial force is obtained through a power screw mechanism on the tail-stock with a forging pressure of (Pu = 28.02 MPa). Welding temperature is 1050˚C. The friction welding results are then formed into specimens for mechanical testing of tensile test specimens and standard ISO 82-1974 (E) test, DP8 size and hardness test using the Rockwell method. The test result showed that the tensile strength of the friction welding result with the highest σ max value in 1800 rpm/45 second specimen was 446,22 N/mm2 decreased when compared with raw material that is 788,62 N/mm2. the bending strength of the friction welding result with the highest σ max value in the 1800 rpm / 45 second specimen is 1470 N / mm2 decreased when compared with the raw material ie 1950 N/mm2. The highest hardness value is located in the part of the welded joint of specimen with variation of 1800 rpm / 45 second rotation of 77,5 HRA decrease from hard raw material value is 81,0 HRA. Rotation variations affect the mechanical properties of the material, the higher the engine rotation the value of its strength increases. Similarly, if the wrought time longer then the value of strength will also increase. Observations on microstructure with the variation of rotation speed and time of wrought there is a noticeable change is in the weld metal there are many austenite so that the strength and hardness value almost closer to Raw material hardness value. As for the HAZ area that there are many ferrit so that the strength and hardness value close to hardness value Raw material.

Rancang Bangun Sistem Kontrol Suplai Beban PLTS Menggunakan Pulse Width Modulation dan Real Time Clock Andareas Pangkung; Shiti Qamariah; Sukma Abadi; Nur Intan Mayasari
Jurnal Teknik Mesin Sinergi Vol 20, No 1 (2022): April 2022
Publisher : Politeknik Negeri Ujung Pandang

The increasing need for energy makes people prefer to develop alternative energy. The sun is the main source of energy to the earth's surface. In sunny weather conditions, solar energy is about 1000 Watt/m2. The cheap source of solar energy causes many parties to use its energy, one of which is for street lamp lighting. The limited time of the sun to produce energy must be make solar energy is stored in batteries so that it can be used at night. However, the battery also has limitations in storing energy which results in less efficient use of PLTS. Therefore, it is necessary to adjust the loading using a controller that is able to regulate how much energy the battery must release according to the needs at that time so that there is no more wasted battery expenditure. With this controller, alternative energy will be used more efficiently. Making the tool begins by looking for some reference components that are capable of being the main material, then doing assembly and continuous testing of the tool to see if the controller runs as desired. It is hoped that this tool can be applied on roads and other places that require load supply regulation. The test results during the tool making process prove that the presence of a load supply regulator controller makes the battery more efficient to use

Ketersediaan Jaringan Prasarana Distribusi Listrik Di Wilayah Permukiman Bumi Tamalanrea Permai Kota Makassar Faisal Faisal
Jurnal Teknik Mesin Sinergi Vol 9, No 2 (2011): Oktober 2011
Publisher : Politeknik Negeri Ujung Pandang

The aim of the study was to explain the effect of the availability of infrastructure, service, and customer participation on the performance of electrical distribution at Bumi Tamalanrea Permai and the most dominant factor affecting the performance. The study was descriptive quantitative. The data were collected through interview and questionnaire. The results of the study indicate that the availability of infrastructure, service and public participation are affected by several factors: availability of electrical infrastructure outside and inside the house and public road illumination. The role of workers has a great effect on the reliability of electrical system, public/customer participation in paying the electric bill, report to the workers in charge when there is a problem of outage, arid make an effort to public road illumination, are real contribution of community to create the reliability of electrical system at Bumi Tamalanrea Permai settlement in Makassar city.

Desain dan Analisis Alat Bending V Sistem Hidro Pneumatik Muhammad Jufri Dullah; Muhammad Arsyad Suyuti; Sudarman Sudarman; Mariam Mariam; Muh Azwar Arham
Jurnal Teknik Mesin Sinergi Vol 17, No 2 (2019): Oktober 2019
Publisher : Politeknik Negeri Ujung Pandang

The design of the pneumatic hydro system V bending tool serves as an alternative tool for bending plates replacing the manual bending method which is widely used in the industrial community, especially machining workshop workshops today. In this design the hydraulic jack bender is driven by a pneumatic cylinder so that the workload of the operator is lighter. As for the results of this design and analysis, a V bending tool with 750 mm frame height, 650 mm frame width, 150 mm hydraulic stroke length, and 5 mm diameter spring pull wire are obtained. In addition, the punch angle is 85o and the punch radius is 1.5 mm while the die angle is 85o, the width of the V die is 33 mm and the bending line capacity is 300 mm. The punch and die material chosen is steel AISI 1045.

PERENCANAAN JARINGAN LISTRIK BAWAH TANAH PEMBANGKIT LISTRIK TENAGA MIKROHIDRO DESA MOOLO KECAMATAN BATUKARA KABUPATEN MUNA Baharuddin Baharuddin; LD Muh Kamaluddin K; Andareas Pangkung; Abdul Rahman
Jurnal Teknik Mesin Sinergi Vol 11, No 2 (2013): Oktober 2013
Publisher : Politeknik Negeri Ujung Pandang

Perencanaan jaringan listrik bawah tanah dilakukan dengan kapasitas generator sebesar 25 kW, jarak antara pusat pembangkit dengan pusat beban sejauh 2100 meter, jumlah kepala keluarga 150 kk sebagai pemanfaat energi listrik PLTMH sebesar 18480 Watt.Analisis berdasarkan reaktansi induktif konduktor tembaga dengan asumsi ΔV=11,40 Volt, maka dibutuhkan q=114,346 mm2, ΔP=1.381,754 Watt, dan apabila diasumsikana ΔV=19 Volt, maka dibutuhkan q=185,958 mm2 ΔP=849,644 Watt. Dianalisis berdasarkan tahanan konduktor tembaga dengan asumsi ΔV=11,40 Volt, maka dibutuhkan q=78,777 mm2, ΔP=1.798,125 Watt, dan apabila diasumsikan ΔV=19 Volt, maka dibutuhkan q=110,288 mm2 ΔP=1.284,375 Watt, dengan arus kirim generator 85% atau 40,38Ampere.

Page 9 of 42 | Total Record : 417

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Muhammad Ruswandi Djalal

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wandi@poliupg.ac.id

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+6285250986419

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sinergi@poliupg.ac.id

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Jalan Perintis Kemerdekaan KM.10 Tamalanrea, Makassar 90245

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Kota makassar,

Sulawesi selatan

INDONESIA

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Home Page

OAI Link

Editorial Team

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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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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