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Perancangan Poros dan Pasak Mesin Crusher Sampah Plastik untuk Pengolahan Refuse Derived Fuel Kurniawana,, Akbar; Saleh, Arif Rahman; Dewi, Rany Puspita
Journal of Mechanical Engineering Vol 7, No 2 (2023): Journal of Mechanical Engineering
Publisher : Universitas Tidar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31002/jom.v7i2.8096

Abstract

Mesin crusher sampah plastik merupakan mesin yang digunakan untuk mengubah sampah plastik menjadi partikel yang lebih kecil lagi. Salah satu komponen yang penting dalam mesin crusher adalah poros yang memiliki peran sebagai tempat pisau pencacah dan tranmisi daya dari motor penggerak. Terdapat beberapa hal yang perlu dipertimbangkan dalam perancangan poros seperti material, momen puntir, dan tegangan. Proses perancangan poros mencakup pemilihan material, pemilihan dimensi, dan bentuk poros. Berdasarkan data yang diperoleh, mesin crusher sampah plastik membutuhkan daya maksimum penggerak sebesar 8,92 kW untuk menggerakkan poros dengan diameter minimum 31,9 mm. Namun, desain poros yang dibuat berbentuk bertangga sehingga poros memiliki diameter sebesar 36 mm dan diameter poros sebagai tempat bantalan 40 mm. Poros ini juga dilengkapi pasak dengan ukuran 10×8 mm sebagai pengunci untuk elemen pulley dan roda gigi. Material yang digunakan untuk poros dan pasak adalah Baja AISI 1035 karena kuat dan mudah dibentuk.
Analisis Kegagalan pada Poros Pompa Sentrifugal 107 JA Menggunakan Metode Elemen Hingga (MEH) di PT. Petrokimia Gresik Nelfandia, Naufal Fajran; Saleh, Arif Rahman; Hilmy, Fuad
Journal of Mechanical Engineering Vol 7, No 2 (2023): Journal of Mechanical Engineering
Publisher : Universitas Tidar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31002/jom.v7i2.8095

Abstract

Proses produksi amoniak di PT. Petrokimia Gresik sering kali terhambat karena kerusakan peralatan, salah satunya adalah karena kegagalan pada poros pompa sentrifugal 107 JA. Pompa ini sebelumnya mengalami penggantian poros pada tanggal 15 Oktober 2021 saat dilakukan overhaul maintenance karena porosnya patah di bagian tengah. Penelitian ini akan menganalisis kegagalan poros pompa 107 JA, termasuk spesifikasi material poros, bentuk pola patahan poros, dan beban kerja saat pompa beroperasi. Dengan menggunakan literatur terkait dan simulasi metode elemen hingga pada aplikasi Ansys, diharapkan dapat ditemukan penyebab kegagalan dan dibuat rekomendasi untuk mencegah kegagalan serupa terjadi. Berdasarkan hasil analisis metode elemen hingga menggunakan aplikasi Ansys, poros pompa 107 JA mengalami kegagalan akibat beban torsi yang melebihi nilai fatigue limit material stainless steel 17-4 PH, di mana poros menerima beban tegangan maksimum sebesar 609,79 MPa di bagian tengah porosnya dekat dengan rumah pasak. Material stainless steel 17-4 PH hanya mampu menahan beban tegangan maksimum sebesar 655 MPa sehingga nilai tegangan maksimum yang terjadi pada poros sangat mendekati nilaifatigue limit material. Hal inilah yang menyebabkan kegagalan pada poros terjadi. 
DESAIN DAN ANALISIS THERMAL PADA ELECTRIC VEHICLE (EV) HOME CHARGER 7,4 KW MENGGUNAKAN PENDEKATAN COMPUTATIONAL FLUID DYNAMIC (CFD) Putra, Yoga Anggara; Hilmy, Fuad; Sulistyo, Raka Mahendra; Saleh, Arif Rahman
ELEMEN : JURNAL TEKNIK MESIN Vol. 11 No. 2 (2024)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v11i2.295

Abstract

This research aims to design the EV Home Charger design with a CFD approach to analyze the heat transfer in the EV Home Charger casing using CAE software. The EV Home Charger design made in this research uses polycarbonate as the main material and provides several variations such as without a cooling fan and with a cooling fan. The results of this study show that the temperature generated by the EV Home Charger design without a fan has a higher temperature of 42.94℃, the EV Home Charger with a fan speed of 8 m/s is 40.85℃ with a percentage decrease in temperature of 5%. While the electric power consumed by the EV Home Charger without a fan has a higher power consumption of 68.79 watts and the EV Home Charger with an 8 m/s fan requires 61.93 watts of electric power, so it has a percentage of power reduction of 10%.
DESAIN DAN ANALISIS THERMAL PADA ELECTRIC VEHICLE (EV) HOME CHARGER 7,4 KW MENGGUNAKAN PENDEKATAN COMPUTATIONAL FLUID DYNAMIC (CFD) Putra, Yoga Anggara; Hilmy, Fuad; Sulistyo, Raka Mahendra; Saleh, Arif Rahman
ELEMEN : JURNAL TEKNIK MESIN Vol. 11 No. 2 (2024)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v11i2.295

Abstract

This research aims to design the EV Home Charger design with a CFD approach to analyze the heat transfer in the EV Home Charger casing using CAE software. The EV Home Charger design made in this research uses polycarbonate as the main material and provides several variations such as without a cooling fan and with a cooling fan. The results of this study show that the temperature generated by the EV Home Charger design without a fan has a higher temperature of 42.94℃, the EV Home Charger with a fan speed of 8 m/s is 40.85℃ with a percentage decrease in temperature of 5%. While the electric power consumed by the EV Home Charger without a fan has a higher power consumption of 68.79 watts and the EV Home Charger with an 8 m/s fan requires 61.93 watts of electric power, so it has a percentage of power reduction of 10%.
Analisis Kekuatan Struktur Sistem Penyimpanan Syngas dengan Metode Finite Element Analysis Erdianto, Diva Arief; Mujiarto, Sigit; Sulistiyo, Raka Mahendra; Saleh, Arif Rahman; Setiyawati, Tri Retno
Jurnal Inovasi Global Vol. 3 No. 6 (2025): Jurnal Inovasi Global
Publisher : Riviera Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58344/jig.v3i6.356

Abstract

Penggunaan bahan bakar fosil seperti diesel sebagai sumber energi utama untuk kebutuhan sehari-hari maupun industri menghadapi tantangan tersendiri, seiring dengan meningkatnya kebutuhan energi dan menipisnya cadangan bahan bakar fosil yang ada. Mesin diesel dual fuel (DDF) dengan syngas dari gasifikasi biomassa sebagai bahan bakar sekunder merupakan solusi yang potensial. Penelitian ini bertujuan untuk merancang dan mengetahui kekuatan struktur sistem penyimpanan syngas menggunakan metode pemodelan dengan perangkat lunak SolidWorks 2024 dan simulasi berbasis analisis elemen hingga (FEA). Berdasarkan penelitian diperoleh desain tangki berbentuk silinder dengan penutup elipsoidal yang menggunakan material SA516-70, dengan dimensi diameter dalam 248 mm, ketebalan dinding 2,22 mm, dan panjang 340 mm, serta rangka dari baja tahan karat A316 dengan ukuran 987,4 × 384,8 × 843,45 mm. Hasil simulasi menunjukkan tegangan von Mises sebesar 94 MPa, displacement sebesar 0,003869 mm, dan faktor keamanan sebesar 2,8 untuk tangki, serta tegangan von Mises sebesar 5,882 MPa, displacement sebesar 0,182 mm, dan faktor keamanan sebesar 29 untuk rangkanya. Simulasi hidrostatik pada tangki menghasilkan tegangan von Mises maksimum sebesar 69,91 MPa dan displacement sebesar 0,00719 mm. Hasil ini menunjukan bahwa desain tangki dan rangka dianggap aman.
Prediction of Peak Ground Acceleration for The Bengkulu Region Using Artificial Neural Network Febriani, Yeza; Fatkhurrochman, Fatkhurrochman; Yunita, Farida; Farid, Muhammad; Apriniyadi, Mohammad; Saleh, Arif Rahman
Jurnal Ilmiah Pendidikan Fisika Al-Biruni Vol 14 No 1 (2025): Jurnal Ilmiah Pendidikan Fisika Al-Biruni
Publisher : Universitas Islam Negeri Raden Intan Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/jipfalbiruni.v14i1.24586

Abstract

This study aimed to predict Peak Ground Acceleration (PGA) values for the Bengkulu region using an Artificial Neural Network (ANN) model. The ANN model utilized earthquake parameter inputs, including magnitude, depth, and hypocenter distance, with soil PGA data collected from the Bengkulu City area. The PGA values were estimated using a neural network model, with the results optimized, validated, and evaluated for performance. The model accurately predicted PGA for large-magnitude earthquakes (R² = 0.99 for magnitudes 7.9–6.5). However, its performance declined significantly for smaller magnitudes (R² = 0.0141 for magnitude 4), reflecting challenges in accurately capturing input parameters, like focal depth and epicentre distance for low-magnitude events. Across a magnitude range of 4.0 to 7.9, the model achieved an overall R² value of 0.99, indicating high accuracy, particularly for larger magnitudes. However, the model's performance declined for lower magnitudes, with R² values dropping significantly, attributed to inaccuracies in input parameters, such as focal depth, epicentre distance, and period. The study provided logarithmic equations for each magnitude range tailored to the seismic characteristics of Bengkulu City, highlighting the importance of localized PGA prediction models. The findings suggest the potential effectiveness of the ANN model for improving earthquake early warning systems and seismic risk management in Bengkulu City under simulated conditions, particularly for large-magnitude earthquakes (R² = 0.99). However, the model’s limitations in predicting PGA for low-magnitude events (R² = 0.0141) highlight the need for further refinement before real-world implementation. This research contributes to the growing body of knowledge by validating and refining the ANN approach for region-specific seismic conditions, offering a practical tool for local authorities and disaster management agencies. Future research should improve the model's accuracy for low-magnitude earthquakes and explore hybrid machine learning techniques to enhance predictive.
Evaluating Corporate Social Responsibility (CSR) Program through the Social Return on Investment (SROI) Approach: A Case Study of Sundung Cisarua Program at PT ANTAM Gold Mining Business Unit Saleh, Arif Rahman; Ayuba, Edy; Lukita, Nabilla Dea; Yudianto
INFLUENCE: INTERNATIONAL JOURNAL OF SCIENCE REVIEW Vol. 7 No. 1 (2025): INFLUENCE: International Journal of Science Review
Publisher : Global Writing Academica Researching and Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This study aims to analyze the success of the CSR program facilitated by PT ANTAM Gold Mining Business Unit, namely the Sistem Pengembangan Usaha dan Perlindungan Lingkungan Cisarua (Sundung Cisarua) Program, using the Social Return on Investment (SROI) approach. This research used a descriptive qualitative approach to evaluate the extent to which the program has a real impact on the community. The analysis results indicate that the program generates an SROI ratio of 5.45, meaning that every IDR 1 invested yields a social return of IDR 5.45. This achievement reflects that the Sundung Cisarua Program provides significant social benefits and also has a positive impact on economic and environmental aspects. Therefore, the program is considered effective and feasible for further development and replication in other areas with similar characteristics.
Efficiency Analysis of Incinerator Combustion Chamber Using Variations in the Number of Burners with the Computational Fluid Dynamics Method Siana, Nezar Azali; Mujiarto, Sigit; Purnomo, Sigit Joko; Saleh, Arif Rahman
FLYWHEEL : Jurnal Teknik Mesin Untirta Vol 11, No 2 (2025): October
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/fwl.v11i2.34890

Abstract

Waste is a global environmental problem that is increasing with population growth and consumption. Based on SIPSN 2023 data, waste generation in Indonesia reached 69.9 million tons, dominated by food waste (41.60%) and plastic (18.71%), with households as the main source (44.37%). Incinerators are an effective solution to reduce waste volume by 50–90% and have the potential to generate energy through heat conversion. This study designed an incinerator with a capacity of 45 kg with a double burner system fueled by Compressed Natural Gas (CNG) to optimize the combustion process and reduce emissions. The design was carried out using SolidWorks 2022, while flow and emission simulations were carried out using ANSYS 2023 R1. This study compares the combustion performance of single-burner and double-burner systems based on CO and CO2 exhaust emissions. Simulation results show that the single-burner system produces a CO mass fraction of 0.6144 and CO₂ of 0.1452, while the double-burner system produces a CO fraction of 0.6845 and CO₂ of 0.0910. The combustion efficiency of the single-burner system was recorded at 19.1%, while the double-burner system only achieved 11.7%. These values indicate that the single-burner system has more complete and efficient combustion than the double-burner system, in terms of exhaust.
Computational Fluid Dynamic (CFD) Analysis On Window Area Variation And Cooler Placement On Thermal Comfort In Stainless Steel Railway Carriages Jayanto, Denni Bagus; Saleh, Arif Rahman; Dewi, Rany Pupita
Jurnal Polimesin Vol 22, No 1 (2024): February
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v22i1.4185

Abstract

Thermal comfort is one of the most important factors in carrying out activities, especially during train travel. Therefore, PT Kereta Api Indonesia is trying to improve service standards by providing air conditioning on all trains, both executive and economy class. Several factors influence thermal comfort, such as temperature, air velocity, clothing insulation, radiation temperature, metabolism, and air humidity. This study aims to determine the distribution of temperature, air velocity, and airflow in stainless steel railroad cars, both actual and its variations. Computational Fluid Dynamic (CFD) simulation is used in this research. In the CFD simulation, several carriage design variations were applied, namely the actual design and three other designs that changed the location of the cooler and the window area like a commercial airplane. This study showed that KA 3 has a better temperature distribution with an average temperature of 24.71oC, and the airflow flows evenly throughout the carriage with an average speed of 0.50 m/s. According to SNI 03-6572-2001, KA 3 has met the comfort criteria.
Peningkatan Kapasitas Desa Bangun Purba sebagai Desa Mandiri Air Bersih Berbasis Masyarakat yang Berkelanjutan Febriani, Yeza; Fathoni, Ahmad; Rahmi, Alfi; Saleh, Arif Rahman
E-Dimas: Jurnal Pengabdian kepada Masyarakat Vol 11, No 4 (2020): E-DIMAS
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/e-dimas.v11i4.4634

Abstract

Pada tahun 2017 Desa Bangun Purba mendapat bantuan PAMSIMAS (program nasional penyediaan air minum dan sanitasi berbasis masyarakat) yang menyediakan air bersih kapasitas 1 liter/detik dengan sumber air dari mata air yang dialirkan ke sungai. Akan tetapi airnya tercemar dan mengandung besi (Fe) dan mangan (Mn) yang ditandai dengan warna air yang berubah menjadi kuning-coklat setelah kontak dengan udara. kegiatan Program Pengembangan Desa Mitra (PPDM) diharapkan dapat memberdayakan masyarakat desa melalui KKM dan BUMDES selaku mitra sebagai subjek (pelaku) program dengan upaya peningkatan kapasitas sehingga terbentuk desa mandiri air bersih yang berkelanjutan melalui penyediaan sarana berupa teknologi tepat guna (TTG) instalasi pengolahan air bersih layak konsumsi dan air minum isi ulang serta peningkatan kapasitas dan tata kelola kelembagaan. Tujuan khusus dari kegiatan PPDM ini adalah Perluasan prasarana jaringan sambungan rumah tangga kepada masyarakat desa bangun purba, peningkatan kapasitas KKM Paya Ambar dan BUMDES bangun purba dalam mengelola TTG instalasi air bersih dan unit usaha air minum isi ulang, Peningkatan kualitas kesehatan dan ekonomi masyarakat melalui unit usaha air isi ulang yang dikelola oleh BUMDES. Metode pelaksanaan dalam program pengabdian antara lain: 1) peningkatan infrastruktur, 2) penyediaan teknologi, dan 3) peningkatan kapasitas lembaga agar dihasilkan Desa Bangun Purba yang mandiri air bersih yang berkelanjutan. Hal ini menjadi objek edukasi bagi masyarakat desa, dunia akademik dan desa lain. Hasil yang diperoleh yaitu penyediaan teknologi tepat guna pengolahan air bersih menjadi air layak konsumsi kapasitas 30 L/min, peningkatan pengetahuan pengurus KKM yang mengoperasikan sistem pengolahan air bersih layak konsumsi dan depot air minum, Unit usaha depot air minum telah terbentuk dengan kapasitas 200 galon/hari, unit ATM air minum dengan kapasitas 200 galon perhari telah dirancang. Dengan adanya kegiatan ini diharapkan dapat meningkatkan kehidupan masyarakat desa baik dari aspek kesehatan maupun ekonomi.Â