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setiawan, Dibyo
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PENGARUH VARIASI KUAT ARUS SMAW TERHADAP SIFAT MEKANIK BAJA AISI 1045: SMAW Current Variations Effect on Mechanical Properties of AISI 1045 Steel Muliastri, Destri; Iryani, Lenny; Setiawan, Dibyo; Ramadhan, Kukuh; Okviyanto, Toni
Jurnal Konversi Energi dan Manufaktur Vol. 9 No. 2 (2024)
Publisher : Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/JKEM.9.2.8

Abstract

This study discusses the effect of variations in the parameters of the welding process on the tensile strength and Vickers hardness tests. In general, it is widely known that in the fabrication process, welding is a very important process that is used to join two or more materials. The welding process is carried out with variations in the strength of the welding current, namely 75, 85, and 95 A. The experimental method used in this research is AISI 1045 steel material with a thickness of 6.0 mm. The results of the tensile strength test have the highest value at a current strength of 75 A which is equal to 756.642 MPa. The lowest tensile strength test results were obtained with a tensile strength of 687.608 MPa at a current strength of 95 A. specimens with variations in current strength of 95 A have the highest value in the Vickers hardness test, with a hardness value of 281.25 HV. From the research conducted it is known that as the welding current increases there is a decrease in the value of the tensile strength. The hardness value in the heat affected zone (HAZ) area of all test specimens has the highest value, while the hardness value of weld metal (WM) and base metal (BM) has almost the same hardness value.
Studi pengaruh debit dan jumlah tingkat runner terhadap efisiensi turbin vorteks PLTPH Haryadi, Haryadi; Mahmudi, Ali; Sugianto, Sugianto; Setiawan, Dibyo
JURNAL CRANKSHAFT Vol 6, No 2 (2023): Jurnal Crankshaft Vol. 6 No. 2 (2023)
Publisher : Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24176/crankshaft.v6i2.10876

Abstract

Data from the Central Statistics Agency for West Java Province in the 2023 figures show that the installed electric power in 2022 is 30,196.9 MVA. Based on data from the Indonesia Energy Transition Outlook 2023, West Java Province is in the lowest classification with a percentage of 7-23%. An increase in the number of pico-hydro power plants with a low-head operating system can increase the distribution of electricity supply. Budget allocations for research are available at Polban for internal lecturers, through this scheme, the research team plans to increase the power and efficiency of vortex turbines, the 2023 research output target, an efficiency of 30% from the previous research achievement in the 2022 study of 23.8%. Current studies are carried out with variations in discharge and the number of runner stages to increase the efficiency of vortex turbines. The experimental operation is based on SNI 8277:2016, variations in discharge from 7 to 10 l/s, and the application of one and two stage 630 turbine runners. In addition to variations in discharge, loading gradually until the runner rotation stops. The results of the experimental recording of the application of the one-level 630 runner, obtained the highest efficiency occurring at a discharge of 9 l/s with an efficiency of 37%, while the experimental application of the two-level runner 630 highest efficiency occurred at the application of a discharge of 8 l/s with an efficiency of 34%. The more the discharge is added the response efficiency does not always increase.
Pengaruh Variasi Holding Time terhadap Mikrostruktur dan Sifat Mekanik AA 6061-T6 Arifin, Devi Eka Septiyani; Bintoro, Waluyo Musiono; Setiawan, Dibyo; Muliastri, Destri; Zen, Elfiah Fadhilah
JURNAL CRANKSHAFT Vol 7, No 1 (2024): Jurnal Crankshaft Vol.7 No.1 (2024)
Publisher : Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24176/crankshaft.v7i1.12099

Abstract

Aluminium Alloy 6061 merupakan jenis Aluminium seri 6xxx yang memiliki sifat mekanik baik seperti ketahanan lelah, keuletan, ringan, mampu mesin, dan kemampuan bentuk yang tinggi. Akan tetapi, Aluminium Alloy memiliki kelemahan dari segi kekuatan yang lebih rendah jika dibandingkan dengan Aluminium seri 2xxx dan 7xxx. Sehingga dapat dioptimalkan, salah satunya melalui proses perlakuan panas T6. Proses ini dimulai dengan tahap solution treatment pada suhu 540°C selama 1 jam dan quenching menggunakan air. Selanjutnya, dilakukan artificial aging pada suhu 165°C dengan variasi waktu penahanan 1 jam, 3 jam, 5 jam, dan 7 jam. Penelitian ini bertujuan untuk mengamati perubahan kekuatan dan kekerasan Aluminium Alloy 6061 sebelum dan setelah age hardening. Hasil penelitian menunjukkan bahwa kekuatan tarik dan kekerasan optimum tercapai pada waktu penahanan 5 jam, dengan kekuatan tarik 293,9 MPa dan kekerasan 109 HV. Namun, pada penahanan 7 jam, kekuatan tarik menurun menjadi 727,2 MPa dan kekerasan menjadi 70,2 HV.
Simulasi Turbin Portabel Jenis Cross Flow Untuk Pembangkit Listrik Tenaga Pikohidro (PLTPH) Triyono, Budi; Yudrika, Moh Azmil; Setiawan, Dibyo
JURNAL CRANKSHAFT Vol 7, No 1 (2024): Jurnal Crankshaft Vol.7 No.1 (2024)
Publisher : Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24176/crankshaft.v7i1.11975

Abstract

In Indonesia, especially West Java Province, there are quite a lot of rivers with quite high or mountainous elevation differences, generally, these rivers are used as tourist attractions which are located far from residential areas. To meet electricity needs, an alternative is to convert the river flow into electricity, either used for lighting or simply to charge electronic devices such as gadgets. One solution is to make small turbines that can be moved and can be produced in large quantities. Through this activity, a simulation analysis will be carried out on previously available designs so that existing weaknesses can be seen so that they can become evaluation material for subsequent designs. The stages of activities carried out include the study stage of simulations using CFD to determine deficiencies in inflow performance and also serve as material for the evaluation of subsequent designs. From the results of the simulation that has been carried out, the flow in the existing equipment has a decrease when it hits the cross-flow turbine blade so that the flow is not at its optimal speed, besides that the kinetic energy has not been completely converted into mechanical energy which can be seen in the velocity distribution picture, namely the flow still has a speed when it enters the outlet hole, this becomes a loss for the tool and becomes a note for evaluation for further tool design.
Studi Pengaruh Volume Tungsten terhadap Optimalisasi Biaya Proses Carbon Analyzer di PT.XYZ Setiawan, Dibyo; Handy, Rayhan Aliva Vitra; Wibowo, Cahyo; Wiyono, Apri; Putra, Fisika Prasetyo; Rinaldi, Kardian
JURNAL CRANKSHAFT Vol 6, No 3 (2023): Jurnal Crankshaft Vol.6 No.3 (2023)
Publisher : Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24176/crankshaft.v6i3.11398

Abstract

PT XYZ merupakan suatu perusahaan joint venture, terdapat 2 (dua) macam proses produksi, yaitu Proses Casting dan Proses Machining, dalam proses produksi Casting, tersedia produk FC (Ferro Casting), FCD (Ferro Casting Ductile) dan dapat juga melaksanakan proses Machining, Assembling serta Metal Forming. Penghargaan yang telah diperoleh Cost Reduction Program, Good Delivery Perfomance, Good Cost Perfomance, dan Kategori Proses. Salah satu fokus terkait Cost Reduction Program bertujuan optimalisasi konsumsi dan biaya penggunaan tungsten, serta biaya tenaga kerja. Kegiatan merupakan kontribusi akademisi memberikan rekomendasi bagi PT.XYZ dalam rangka menyelesaikan masalah di Industri. Metode yang digunakan dalam pelaksanaan kegiatan optimalisasi proses carbon analyzer di PT.XYZ menggunakan pendekatan eksperimental dengan pemberlakuan volume tungsten pada setiap tahap eksperimen. Tahapan meliputi penyiapan alat, peralatan dan sampel, proses penimbangan dan pencampuran, proses treatment carbon analyzer, analisis hasil eksperimen dan kalkulasi reduksi biaya dan menyusun kesimpulan. Eksperimen yang diterapkan diantaranya volume 0, 0.75, 1.5 dan 1.8 Gram pada Treatmen Carbon Analyzer.  Hasil kegiatan diperoleh bahwa semakin banyak penggunaan volume tungsten pada proses carbon analyzer, dapat mengurangi waktu pengerjaan yang dibutuhkan oleh mesin carbon analyzer sebanyak 3 (tiga) detik. Penggunaan tungsten 0,75gram (½ dari standard) lebih efektif mampu menghemat biaya penggunaan tungsten (Cost Reduction). Selanjutnya terkait dengan penghematan, dengan menggunakan penerapan tungsten 0,75gram dapat menghemat biaya sebesar Rp 14.149.779/bulan dan penghematan biaya tenaga kerja sebesar 250.000/bulan.
Analisis Kekuatan Fishing Tools Holder 50.000 lbs menggunakan Metode Finite Element Widiantoro, Heri; Arifin, Devi Eka Septiyani; Setiawan, Dibyo; Pasya, Azdane Peprial Indika
JURNAL CRANKSHAFT Vol 6, No 3 (2023): Jurnal Crankshaft Vol.6 No.3 (2023)
Publisher : Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24176/crankshaft.v6i3.11557

Abstract

Finite element numerical simulation (FEA) has a function to analyze the design model and as a validation of the analysis results against manual calculations. FEA simulation uses specialized software to save time and cost. The purpose of the FEA simulation on this design model is to analyze the strength of the design model against a deformation. In this study, a strength test will be carried out on one of the sub-assemblies on the fishing equipment tensile and compressive testing machine, namely the fishing tools holder sub-assembly. The reason for the simulation is that the sub-assembly is directly related to compressive or tensile forces with relatively large units. The material used for this sub-assembly design is SS400 material or ASTM A36 Carbon Steel. The simulation process was carried out in 10 iterations using the curvature-based mesh method with mesh size settings of 10, 9, 8, 7, 6, 5.8, 5.6, 5.4, 5.2, and 5. The maximum stresses that occurred and reached convergence were at mesh sizes 5.8, 5.6, 5.4, and 5.2 in sequence with stress values of 137 MPa, 136 MPa, 142 MPa, and 135.7 MPa, respectively. The finite element analysis results show that the fishing tools holder design produces a maximum stress of 142 MPa at the converging area, with a factor of safety (FoS) of 1.8. Based on these simulations, the design of the fishing tools holder can be implemented on the Fishing Equipments Tensile Test and Press Test Machine.
MODIFIKASI INSTALASI POMPA HYDRAULIC POWER UNIT UNTUK MENURUNKAN DOWNTIME EQUIPMENT DAN KONSUMSI OLI HIDROLIK Apri Setiawan; setiawan, Dibyo; Steven Gabriel Romero; Hanni Maksum Ardi; Rifan Mustofa; Agus Suben
MACHINERY Jurnal Teknologi Terapan Vol. 6 No. 3 (2025): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

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

Abstract

Mesin Computer Numerical Control (CNC) merupakan peralatan manufaktur yang dikendalikan oleh komputer dengan bahasa numerik. Salah satu jenisnya adalah CNC Milling yang menggunakan sistem hidrolik melalui Hydraulic Power Unit (HPU) untuk proses clamp dan unclamp material kerja. Permasalahan yang ditemukan adalah tekanan hidrolik yang tidak stabil dan suhu HPU yang tinggi akibat beban kerja berlebih (overload), sehingga menyebabkan lemahnya sistem clamping, meningkatnya konsumsi oli hidrolik, serta bertambahnya downtime mesin. Untuk mengatasi hal tersebut, dilakukan modifikasi dan instalasi tambahan pada pompa HPU. Tahapan kegiatan meliputi identifikasi kerusakan, studi literatur, perancangan modifikasi, pengadaan komponen, instalasi, pengujian, dan evaluasi hasil. Hasil modifikasi menunjukkan bahwa penambahan satu unit pompa HPU beserta instalasi pendukung mampu meningkatkan tekanan hingga 80 bar dan menurunkan temperatur HPU sebesar 28,2°C. Selain itu, konsumsi oli hidrolik turun menjadi 14 liter per bulan, dan nilai Downtime to Equipment (DTE) hidrolik berkurang hingga 0,07%. Berdasarkan hasil tersebut, modifikasi sistem HPU terbukti efektif dalam meningkatkan stabilitas tekanan, menurunkan temperatur operasi, serta mendukung peningkatan produktivitas mesin CNC Milling yang telah dimodifikasi.
Analisis Performa Boiler Standard Kessel Berdasarkan Rasio Bahan Bakar dan Steam di PT. XYZ Otong Jaelani; Ali Imron; Dibyo Setiawan; Edward Simanjuntak; Agus Subeno
Piston: Jurnal Teknologi Vol 10 No 2 (2025): Desember 2025
Publisher : Program Pendidikan Vokasi Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55679/pistonjt.v10i2.117

Abstract

Salah satu mesin industri yang perannya sangat penting yaitu boiler. Boiler dalam perusahaan ini merupakan aset yang sangat penting bagi perusahaan, yang menghasilkan luaran berupa uap (steam). Pembakaran adalah suatu reaksi kimia antara bahan bakar dan oksigen yang menghasilkan panas. Konsumsi bahan bakar dan steam boiler yang dihasilkan menjadi hal yang diamati Perusahaan sebagai evaluasi perencanaan anggaran. Tujuan kegiatan ini yaitu menganalisis Analisis Performa Boiler Standard Kessel Berdasarkan Rasio Antara Bahan Bakar dan Steam di PT. XYZ. Metode Pelaksanaan dengan cara melakukan operasi boiler dan melakukan pencatatan operasi serta penelaahan Riwayat produksi. Hasil pengamatan dan penelaahan Riwayat produksi 1 Tahun mulai Juli 2021 sampai Juni 2022 diperoleh nilai rata-rata konsumsi bahan bakar 1009,43 Kg/Jam, kebutuhan air 5,72 m3/Jam dan luaran steam 7866,97Kg/Jam. Sehingga rasio yang diperoleh 130,98. Kesimpulan Performa Boiler Standard Kessel diperoleh 130,98 kg dari maksimal alokasi badan usaha 150 Kg. Kontribusi positif dari kegiatan ini bermanfaat bagi perusahaan mengendalikan alokasi anggaran bahan bakar dan luaran steam operasi boiler, kelebihan penggunaan bahan bakar berdampak pada kerugian perusahaan, sedangkan ketidaksesuaian luaran performa turbin menjadi indikasi terjadinya kerusakan yang dapat ditindaklanjuti.
Co-Authors Abdul Kayi Abdurahman Adri Maldi Subardjah Agung Pratama, Boby Agus Solehudin Agus Suben Agus Subeno Ahmad Kholil Ali Imron Ali Mahmudi Ali Mahmudi Amir Amir Amri Abdulah Anggara, Aditya Anggrainy, Rani Apri Setiawan Apri Wiyono Ardi Nugraha ARDI NUGRAHA, ARDI Ardi Rajab, Dede Aris Suryadi Ariyano Bachtiar, Marsellinus Bantu Hotsan Simanullang Bintoro, Waluyo Musiono Budi Triyono Budi Triyono Bunga Muthia Dien Cahyo Wibowo Cahyo Wibowo Cahyo Wibowo Dadang Kurnia Dadang Kurnia, Dadang Destri Muliastri Devi Eka Septiyani Arifin Edward Simanjuntak Enny Widawati Fathan Dewadi Fathan Mubina Dewadi Ferdiyansyah, Ferdiyansyah Fisika Prasetyo Putra Fisika Prasetyo Putra Gugun Nugraha Hadi Sutanto Hafyyan, Iqbal Handy, Rayhan Aliva Vitra Hanni Maksum Ardi Harry Prayoga Setyawan Haryadi Haryadi - Heri Widiantoro Heryadi, Yadi Ida Ayu Putu Sri Widnyani Iqbal Hidayatullah Iryani, Lenny Istighfari, Nurrahman Jakariya JAKARIYA - - Jakariya, Jakariya Jatira Jatira Jumari Karwansyah , Muhammad Fattan Khairullah Ijlal Khoirudin KURNIASETIAWATI, ANNISA Kusumohadi, Catur Setyawan Maksum Ardi, Hanni Marsellinus Bachtiar Melisa Mulyadi Mohamad Rizkiyanto Mohamad Wirandi Mokhamad Munir Fahmi Mubina Dewadi, Fathan Muhammad Iqbal Harapan Muslim Muhammad Rian Kurniadi Muhammad Yusup Efendi Mulyadi, Yandi Munir Fahmi, Mokhamad Munir Fahmi, Mokhammad Muryanto Muryanto, Muryanto Nana Rahdiana Okviyanto, Toni Otong Jaelani Otong Jaelani Panalili T, Ojakma Sihar Pasya, Azdane Peprial Indika Prasetyo Putra, Fisika Prasetyo Qisti, Yafta Raden Roro Yngwistian Jannavis Astie Rama Kurniawan Ramadhan, Kukuh Rani Anggrainy Revi Kusnadi Rifan Mustofa Rifqi Rahmadiansyah Rinaldi, Kardian Rizki Aulia Nanda Rohadi Yusuf Rudy Rafly Safril Septiani, Herviona Setiawan, Apri Shieddieque, Apang Djafar Shieddique, Apang Djafar Siahaan, Herbert Hasudungan Steven Gabriel Romero Sugianto Sugianto Sugianto Sukarman Sukarman Sukarman Sunaryo, Sulistianto Suripto, Heri Suseno, Bella Maharani Marcellia Sutrimo Syamsurizal, Nazmi Syarah Widia Islamiati R Thomas Aquinas J S Thoyib, Ibnu Annas Toni Okviyanto Triyono , Budi Vauzia, Farrah Wicaksono, Yowando Putro Wijayanti, Linda Wuwung, Vicky Yowando Putro Wicaksono Yudrika, Moh Azmil Yuli Asmi Rahman Zainuddin Zainuddin, Zainiddin Zen, Elfiah Fadhilah Zeqy Zulhaqy