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All Journal Rekayasa Mesin Jurnal Rekayasa Mesin Info-Teknik Turbo : Jurnal Program Studi Teknik Mesin Jurnal Elemen Infotekmesin Scientific Journal of Mechanical Engineering Kinematika JTAM ROTARY International Journal of Mechanical Engineering Technologies and Applications (MECHTA) AEEJ : Journal of Automotive Engineering and Vocational Education Automotive Experiences Jurnal Alat Berat
Sabitah, A'yan
Politeknik Negeri Banjarmasin
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation

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PENGARUH PENGUAPAN BAHAN BAKAR MINYAK TERHADAP KONSUMSI BAHAN BAKAR PADA SEPEDA MOTOR 4 TAK Misbachudin, Misbachudin; Dinata, Ryan; Sabitah, A’yan
JTAM ROTARY Vol 5, No 2 (2023): JTAM ROTARY
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jtam_rotary.v5i2.10107

Abstract

Penelitian ini bertujuan untuk mengetahui penggunaan bahan bakar yang dikonsumsi pada motor bensin 4 tak dengan merancang dan menerapkan sistem aerator untuk menguapkan bahan bakar. Metode yang dipakai pada penelitian ini adalah dengan metode pengujian (experimental method). Yaitu dengan cara memanfaatkan  aerator  yang di implementasikan pada sistem bahan bakar sepeda motor 4 tak untuk mempercepat terjadinya proses penguapan pada bahan bakar minyak. Variabel yang digunakan adalah jenis bahan bakar pertalite dan pertamax, yang diuji dengan menggunakan aerator dan tanpa aerator pada putaran mesin sekitar 1200 rpm tanpa pembebanan selama 3 menit. Hasil pengujian menunjukkan bahwa bahan bakar yang terpakai dengan menggunakan aerator untuk penguapan dapat mengurangi konsumsi bahan bakar. Pertalite menggunakan aerator mengalami penurunan sebesar 2,34 ml/min atau 50% sedangkan bahan bakar pertamax mengalami penurunan sebesar 1,44 ml/min atau 44%. The aim of this research is to determine the fuel consumption of internal combustion engines by designing and implementing an aerator to enhance fuel evaporation. The method employed in this study is experimental, using an aerator integrated into the fuel system of a 4-stroke motorcycle engine to accelerate the fuel evaporation process. The variables used are Pertalite and Pertamax fuels, which were tested both with and without the aerator at an engine speed of approximately 1200 rpm without any load for 3 minutes. The test results indicate that using an aerator for evaporation can reduce fuel consumption. Pertalite fuel with an aerator experienced a 2,34 ml/min 50% reduction, while Pertamax fuel with an aerator experienced a 1,44 ml/min 44% reduction.
ANALISIS PENGGUNAAN PERTALITE DAN BAHAN BAKAR GAS TERHADAP SUHU MESIN SEPEDA MOTOR 100 CC Ardiyat, Ichwan Noor; Sabitah, A’yan; Misbachudin, Misbachudin
JTAM ROTARY Vol 5, No 2 (2023): JTAM ROTARY
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jtam_rotary.v5i2.8431

Abstract

Penelitian ini bertujuan untuk mengetahui perbandingan suhu mesin pada sepeda motor Honda Supra Fit 100 cc tahun 2005 dengan penggunaan bahan bakar minyak pertalite dan bahan bakar gas LPG. Metode yang digunakan dalam penelitian ini adalah eksperimental dan studi pustaka dengan menggunakan parameter Thermo Gun. Dari hasil pengujian suhu mesin bahan bakar gas LPG didapat 420c pada 2000 rpm dan suhu mesin berbahan bakar pertalite didapat 520c pada 2000 rpm. Dan dapat disimpulkan bahwa suhu mesin menggunakan bahan bakar LPG lebih rendah dibandingkan dengan bahan bakar minyak Pertalite. This study aims determine to compare the engine temperature of a 100 cc Honda Supra Fit motorcycle at 2005 using Pertalite and LPG. The method used in this research is experimental and literature study using the Thermogun parameter. From the results of testing the temperature of the LPG fuel engine, it was obtained 420 oc at 2000 rpm and the temperature of the Pertalite fueled engine was obtained 520 oc at 2000 rpm. And it can be concluded that the temperature of the engine using LPG fuel is lower than Pertalite.
UJI KUALITAS BRIKET ARANG DARI SEKAM PADI DAN SERBUK KAYU SEBAGAI BAHAN BAKAR ALTERNATIF Urwatul Wusko, Ikna; Noraidi Maulana , Antan; Sabitah, A’yan; Misbachudin
Jurnal Rekayasa Mesin Vol. 15 No. 3 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i3.1694

Abstract

The availability of sawdust and rice husks is abundant, so the utilization of these wastes in the South Kalimantan region is very profitable. Apart from that, there are several references that mention rice husk waste and wood dust as prospective biomass sources. In this research, the process of testing the characteristics of composite briquettes made from rice husks and wood dust as an alternative energy source was carried out. This research aims to compare the results of briquette characteristic tests with the results of previous research. The ratio of rice husk-wood dust mixture is 100:0, 70:30, 30:70, and 0:100. For each type of sample, cassava flour with a composition of 10% was used as an adhesive. Of the five parameters; water content, ash content, volatile matter content, fixed carbon, and heating value. There are two parameters that do not meet SNI standards, namely the levels of volatile substances and fixed carbon. For volatile matter levels, the value is still high, namely 45.55%, which should be ≤ 15%, while the value for carbon remains low, namely 35.56%, which should be ≥77%.
RANCANG BANGUN ALAT PRESS BRIKET DENGAN SISTEM HIDROLIK Marali, Aryati Muhaymin; Abrar, Ali; Yusrina, Yasmin Zulfati; Dwimas, Herdian; Sabitah, A’yan
JTAM ROTARY Vol 7, No 1 (2025): JTAM ROTARY
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jtam_rotary.v7i1.14398

Abstract

Penelitian ini bertujuan untuk melakukan penelitian eksperimen untuk meningkatkan nilai komposisi sebuah briket sesuai dengan standar briket nasional. Proses pembuatan alat cetak briket di mulai dari melakukan desain dengan menggunakan software AutoCad, melakukan perhitungan pembebanan dan kemudian melakukan simulasi dengan menggunakan solidwork. Setelah ditemukan nilai standar yang diinginkan dari alat pres briket, maka langkah selanjutnya pembuatan alat pres briket. Adapun hasil perhitungan kekuatan tegangan yang didapatkan yaitu tegangan ijin maksimal 166,67 N/mm2. Hasil simulasi dari alat pres briket yaitu dengan beban maksimal 606 N/mm2. Hasil perhitungan tegangan ijin simulasi lebih besar di banding perhitungan dengan menggunakan rumus, sehingga dapat di simpulkan bahwa alat pres briket aman untuk digunakan dengan beban maksimal 10 ton. This research aims to conduct experimental research to increase the composition value of a briquette following national briquette standards. The process of a briquette press tool starts with designing using AutoCAD software, calculating the loading, and then carrying out a simulation using Solidwork. After finding the desired standard value for the briquette press, the next step is making a briquette press. The results of the tensile strength calculation obtained were a maximum allowable stress of 166.67 N/mm2. The simulation results of the briquette press are with a maximum load of 606 N/mm2. The simulated allowable stress calculation results are greater than calculations using the formula, so it can be concluded that the briquette press is safe to use with a maximum load of 10 tons.
Analisis Kerusakan Brake Accumulator Unit HM400-2R Di PT. United Tractors Site Muara Lawa Marali, Aryati Muhaymin; Nugroho, Dafian Dwi; Zulkifli, Zulkifli; Samosir, Devina Sanchia; Sabitah, A’yan
JURNAL ALAT BERAT Vol 2 No 1 (2025): Januari 2025
Publisher : Politeknik Negeri Balikpapan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32487/jab.v2i1.34

Abstract

Pada PT. United Tractors Tbk. site Muara Lawa terdapat unit articulated dump truck yang mengalami breakdown dengan kerusakan yang terdapat pada brake accumulator. Penelitian ini bertujuan untuk mengetahui penyebab kerusakan komponen brake accumulator pada unit articulated dump truck Komatsu HM400-2R dengan gejala yang timbul berupa kebocoran. Berdasarkan hasil observasi brake accumulator mengalami kebocoran pada gas valve. kerusakan tersebut mengakibatkan kinerja brake system menurun. Pada saat unit beroperasi dan brake system digunakan, terjadi delay yang mengakibatkan kinerja dari brake system tidak normal. Penyebab terjadinya kerusakan komponen brake accumulator pada unit articulated dump truck Komatsu HM400-2R, dikarenakan terjadinya kerusakan pada seal step dan seal piston yang sudah tidak prima, sehingga hasil kerusakan dari seal step dan seal piston menyebabkan timbulnya partikel dan mengakibatkan piston menjadi scratch. Akibat dari kerusakan komponen tersebut menyebabkan fluida dan gas nitrogen tercampur, dan kebocoroan disebabkan oleh kerusakan pada gas valve, cara mengatasi kerusakan yang terjadi pada brake accumulator unit articulated dump truck Komatsu HM400-2R, yaitu dengan memberikan solusi penawaran best repair cost yaitu melakukan repair pada brake accumulator dengan perbandingan biaya 45% lebih murah dibandingkan dengan mengganti unit assy.
ECO – INNOVATIVE CARBURIZING: ENHANCING STEEL ST 37 WITH ALABAN CHARCOAL AND EGGSHELL CATALYSTS Ahmad Robittah; Suprapto, Wahyono; Widodo, Teguh Dwi; Wirawan , Willy Artha; Sabitah, A’yan
International Journal of Mechanical Engineering Technologies and Applications Vol. 6 No. 1 (2025)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2025.006.01.13

Abstract

This study examines the enhancement of St 37 steel through an eco-friendly carburization process using Alaban charcoal and eggshell catalyst. The agriculture sector in South Kalimantan, Indonesia, depends largely on metal tools made from low-carbon steel, which need greater hardness and durability. Traditional carburization techniques are costly and often lead to uneven carbon distribution. This research investigates the use of Alaban wood charcoal and local duck eggshell waste as carburizing agents. The experiment involved varying the weight ratio of charcoal to eggshell powder, then carburizing at 950°C for two hours, followed by water quenching. The results indicated a notable increase in surface carbon content, diffusion depth, hardness, and microstructure of St 37 steel. The optimal combination, achieving the highest surface hardness of 947 HV and a carbon diffusion depth of 1.0 mm, was found at an eggshell catalyst concentration of 30%. All samples exhibited a microstructural change to martensite. These results demonstrate the potential of using agricultural waste to enhance steel properties, promoting more sustainable and cost-effective industrial practices.
Analisis Kandungan Karbon dan Kekerasan Baja AISI 1020 dengan Variasi Media Karburasi Batubara Lignit dan Cangkang Telur Adawiyah, Rabiatul; Rahman, Noor; Sabitah, A'yan; Ardiyat, Ichwan Noor; Robittah, Ahmad
Jurnal Rekayasa Mesin Vol. 19 No. 3 (2024): Volume 19, Nomor 3, Desember 2024
Publisher : Mechanical Engineering Department - Semarang State Polytechnic

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jrm.v19i3.5937

Abstract

Karburisasi adalah proses perlakuan panas yang meningkatkan kekerasan dan ketahanan aus baja karbon rendah, seperti AISI 1020, yang sering digunakan dalam industri. Penelitian ini bertujuan untuk mengevaluasi pengaruh fraksi berat batubara lignit dan cangkang telur sebagai media karburasi terhadap kandungan karbon, kekerasan, dan struktur mikro baja AISI 1020. Karburasi dilakukan dengan lima variasi fraksi berat (60-100% batubara lignit dan 0-40% cangkang telur) selama dua jam, diikuti pendinginan udara. Kandungan karbon diukur menggunakan optical emission spectrometer (OES), kekerasan diuji dengan microvickers, dan struktur mikro dianalisis menggunakan scanning electron microscope (SEM). Hasil menunjukkan bahwa penambahan cangkang telur sebagai katalis meningkatkan kandungan karbon hingga 0,955%, dengan kekerasan tertinggi sebesar 3937 HV pada variasi 30% cangkang telur. Struktur mikro baja berubah dari dominasi ferit-perlit menjadi lebih banyak perlit-sementit. Kombinasi batubara lignit dan cangkang telur terbukti efektif dan ramah lingkungan
ECO – INNOVATIVE CARBURIZING: ENHANCING STEEL ST 37 WITH ALABAN CHARCOAL AND EGGSHELL CATALYSTS Ahmad Robittah; Suprapto, Wahyono; Widodo, Teguh Dwi; Wirawan , Willy Artha; Sabitah, A’yan
International Journal of Mechanical Engineering Technologies and Applications Vol. 6 No. 1 (2025)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2025.006.01.13

Abstract

This study examines the enhancement of St 37 steel through an eco-friendly carburization process using Alaban charcoal and eggshell catalyst. The agriculture sector in South Kalimantan, Indonesia, depends largely on metal tools made from low-carbon steel, which need greater hardness and durability. Traditional carburization techniques are costly and often lead to uneven carbon distribution. This research investigates the use of Alaban wood charcoal and local duck eggshell waste as carburizing agents. The experiment involved varying the weight ratio of charcoal to eggshell powder, then carburizing at 950°C for two hours, followed by water quenching. The results indicated a notable increase in surface carbon content, diffusion depth, hardness, and microstructure of St 37 steel. The optimal combination, achieving the highest surface hardness of 947 HV and a carbon diffusion depth of 1.0 mm, was found at an eggshell catalyst concentration of 30%. All samples exhibited a microstructural change to martensite. These results demonstrate the potential of using agricultural waste to enhance steel properties, promoting more sustainable and cost-effective industrial practices.
Optimalisasi Ko-Pirolisis Campuran Eceng Gondok dan Batubara Muda Terhadap Produksi Bio-Oil, Gas, dan Char Sabitah, A'yan; Noor Ardiyat, Ichwan; Misbachudin, Misbachudin
Infotekmesin Vol 16 No 2 (2025): Infotekmesin: Juli 2025
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v16i2.2464

Abstract

One of the abundant biomass resources in Indonesia is water hyacinth, which can be converted into energy through pyrolysis. This research explores the effect of temperature on the co-pyrolysis process of a mixture of water hyacinth and young coal to produce bio-oil, gas, and char. The method used is pyrolysis with temperature variations on the mixture of water hyacinth and young coal in a batch reactor.  The testing was conducted at a temperature of 400°C with various compositions of water hyacinth and coal mixtures, and the resulting products in the form of bio-oil, gas, and char were then measured to determine the yield. The research results show that in the pyrolysis of pure water hyacinth, gas production reaches 120 grams, bio-oil 108 grams, and char 72 grams. The addition of coal up to 30% increases char production to 113 grams, but decreases gas production to 94 grams and bio-oil to 87 grams.  The gas produced is dominated by methane (67.315%) in a mixture of 70% water hyacinth and 30% coal, while hydrogen reaches 33.721% in pure water hyacinth.
Rancang Banggun Remove Dowel Pin Engine Block dan Cylinder Head Marali, Aryati; Arwin; Dwimas, Herdian; Dhiyaul Haq, M. Daffa; Sabitah, A’yan
JURNAL ALAT BERAT Vol 1 No 2 (2024): Juli 2024
Publisher : Politeknik Negeri Balikpapan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32487/jab.v1i2.22

Abstract

Dowel pin merupakan suatu komponen yang digunakan untuk menahan bagian- bagian mesin dan menghubungkan komponen mesin dengan cepat pada posisi yang akurat. Pada melakukan observasi di PT.Petrosea Tbk, peneliti mengamati cara pelepasan komponen dowel pin yaitu dengan menggunakan vise grip dan perlakuan khusus dengan cara pengelasan. Metode pelepasan tersebut menimbulkan bahaya pada mekanik, yaitu mekanik dapat terpental pada saat pelepasan dangan vise grip dan bahaya dari pengelasan jika proses pelepasan dilakukan pada suction fabrikasi. Metode penelitian ini menggunakan field research dengan observasi, teknik kuisoner, wawancara yang dilakukan di PT.Petrosea Tbk. Hasil perhitungan analisa special tool yang diberikan beban 100 N dapat direkduksi dengan gaya yang dihasilkan alat didapatkan hasil yaitu aman digunakan karena hasil yang didapatkan lebih dari beban yang dibutuhkan dan direncanakan. Hasil penelitian safety yaitu sebesar 58% untuk mengurangi potensi bahaya dari metode sebelumnya dan analisa manpower sebesar 50% untuk mengurangi jumlah manpower dari proses pekerjaan sebelumnya.
Co-Authors Ahmad Robittah Akhmad Syarief Akhmad Syarief Ali Abrar, Ali Apip Amrullah Ardiyat, Ichwan Noor Arwin Dhiyaul Haq, M. Daffa Dinata, Ryan Dwimas, Herdian Fadliyanur, Fadliyanur Galang P, Defrihans Hendra Dani Saputra Ichwan Noor Ardiyat ilham yuliady Junipitoyo, Bambang Luqmanul Hakim Marali, Aryati Marali, Aryati Muhaymin Misbachudin Misbachudin, Misbachudin Moch. Agus Choiron Moh. Sulhan Muhammad Nizar Ramadhan Napitulu, Hansen Rivaldo Ningsih, Rahma Pitria Noor Ardiyat, Ichwan Noor Rahman, Noor Noraidi Maulana , Antan Nugroho, Dafian Dwi Rabiatul Adawiyah Raliannoor Raliannoor Ramadhasari, Aulia Aufa Ricky Indriyanto Ridwan, Ridwan Robittah, Ahmad Samosir, Devina Sanchia Setyo Hariyadi Suryanta, Dhanu Suryanta Suudy, Ahmad Hamim Teguh Dwi Widodo Wahyono Suprapto Wirawan , Willy Artha Wirawan, Willy Artha Wusko, Ikna Urwatul Yogi Dian Alfana Yudistira Bayu Setiambodo Yusrina, Yasmin Zulfati Zulkifli Zulkifli