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All Journal KAPAL Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Rotasi Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Jurnal Teknik Mesin Metal Indonesia Conference SENATIK STT Adisutjipto Yogyakarta Majalah Ilmiah Pengkajian Industri JTT (Jurnal Teknologi Terapan) JURNAL CRANKSHAFT Scientific Journal of Mechanical Engineering Kinematika Quantum Teknika Abdi Masya Creative Research in Engineering (CERIE) Teknika ETAM: Jurnal Pengabdian kepada Masyarakat Jurnal Suara Pengabdian 45 Jurnal Polimesin
Bambang Hari Priyambodo
Mechanical Engineering Department, Sekolah Tinggi Teknologi Warga Surakarta
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PENERAPAN METODE ELEMEN HINGGA DALAM PEMILIHAN BAHAN PADA DESAIN PISAU MESIN PENCACAH PLASTIK Rizqi Ilmal Yaqin; Bambang Hari Priyambodo; Angger Bagus Prasetiyo; Mega Lazuardi Umar
Scientific Journal of Mechanical Engineering Kinematika Vol 6 No 2 (2021): SJME Kinematika Desember 2021
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v6i2.190

Abstract

Garbage is an unresolved problem where 14% of the 30% inorganic waste is plastic waste. Efforts in managing plastic waste are reducing the size of plastic waste to be managed. The plastic chopping machine is a tool used to reduce the size of plastic waste. One of the important components in a plastic chopping machine is a knife. Determining the material used for the knife is one of the steps in the knife-making process. Model simulation in material selection can be used to predict mechanically correct materials. The research that has been carried out has the aim of determining the effective material using FEM in terms of meeting the standard mechanical design characteristics of the blade design. As a result, all of the materials submitted meet the design requirements in the manufacture of knives under operating loading conditions. However, the recommended material in terms of technical mechanics in making plastic chopping blades is JIS SUP 9. This is because it has an Equivalent (Von-Mises) Stress value (27,695 x 10-2 MPa), Equivalent Elastic Strain (12,882 x 10-7 m / m), Total Deformation (17,722 x 10-10 m) and Safety Factor (15) optimal simulation results from other materials.
Optimalisasi Pembuatan Jamu Tradisional Berbahan Empon-empon Menggunakan Mesin Pemarut Semi-Otomatis Nugroho Tri Atmoko; Bambang Hari Priyambodo; Suhartoyo Suhartoyo; Margono Margono
Jurnal ETAM Vol. 2 No. 2 (2022): OCTOBER
Publisher : Politeknik Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46964/etam.v2i2.284

Abstract

Proses pembuatan jamu oleh pengrajin jamu khususnya didaerah Bulakrejo kabupaten Sukoharjo dilakukan melalui pemarutan empon-empon secara manual. Hal demikian berimbas pada tingkat produksi yang kurang efisien, kebersihan serta keselamatan kerja yang tidak terjamin. Melalui program pengabdian kepada masyarakat ini diharapkan dapat meningkatkan pengetahuan dan pengertian dalam penggunaan mesin pemarut empon-empon selain itu UKM mampu bekerja secara efektif dalam proses pembuatan jamu tradisional. Metode yang dilakukan untuk mencapai tujuan yakni dengan cara melakukan pelatihan pembuatan jamu tradisional berbahan empon-empon di UKM Sumber Waras Sukoharjo. Adapun tahapan pelaksanaan program pengabdian kepada masyarakat diantaranya adalah survey, pelaksanaan pelatihan dan penggunaan alat parut empon-empon semi-otomatis. Berdasarkan analisa dan proses kegiatan yang sudah dilaksanakan menunjukkan hasil bahwa Mesin pemarut empon-empon yang dibuat dapat dioprasikan dengan baik oleh mitra/peserta pelatihan. Selain itu, kegiatan ini mampu meningkatkan proses produksi jamu dengan kualitas sesuai yang diharapkan.
Gabungan Quenching-Variasi Tekanan Shot peening Terhadap Kekerasan Permukaan dan Struktur Mikro Permukaan Baja S45C Bambang Hari Priyambodo; Margono Margono; Rizqi Ilmal Yaqin
Quantum Teknika : Jurnal Teknik Mesin Terapan Vol 4, No 1 (2022): October
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jqt.v4i1.16170

Abstract

The combination of Quenching and Shot peening (SP) heat treatment is rarely carried out, especially the use of this treatment can improve the mechanical properties of medium carbon steel (S45C). This study aims to analyze the microstructure and hardness of S45C steel with the combined effect of Quenching heat treatment with shot peening with variations in compressor air pressure. Commercial S45C steel is quenched with a heating temperature of 910oC and held for 15 minutes. In comparison, the SP process is carried out after the quenching process with variations in air pressure, namely 4, 5, 6, and 7 bar. Analysis of the combined results of Quenching and SP processes using hardness and microstructure. The investigation analysis results obtained specimens with the highest surface hardness in the quenching and SP treatment of 899.44 HV. The impact of SP on the surface up to a distance of 120 m from the surface. The highest hardness was in the Quenching and SP treatment with a pressure of 7 bar. The results of this study are used as parameter contributions in the area of surface treatment and heat treatment of carbon steel to be developed in the automotive industry.
Failure Analysis of Fuel System Main Engine Fishing Vessel (Case Study : KM. Sumber Mutiara) Rizqi Ilmal Yaqin; Mohamad Akmal; Juniawan Preston Siahaan; Mega Lazuardi Umar; Bambang Hari Priyambodo; Yuniar Endri Priharanto
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 20, No 1 (2023): February
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/kapal.v20i1.48530

Abstract

Failure analysis on the fishing vessel's main engine is one of the works that must be completed because it is crucial for the operation of the ship. Analysis of determining the cause and effect of the failure main engine fuel system is the goal of this study. FMEA (Failure Mode and Effect Analysis) is a method used to determine priority components in failure. The use of Pareto diagrams is an additional method of analysis. RCFA (Root Cause Failure Analysis) is used to analyze the root cause of the failure of the main engine fuel system. The results obtained are the injector component (168) is the component that has the highest RPN value and is the largest contributor to failure according to the Pareto diagram. The root of the failure identified is the lack of checking before operating. The results of the recommendations obtained are the use of corrective maintenance based on the RPN value and the use of a clean filter for the fuel system. The injector is a component that needs to be maintained so as not to experience a fuel system failure on the main engine. The impact of the results of this study is that it becomes a scientific finding using FMEA and RCFA as a method of analyzing failures in the main engine fuel system on fishing vessels
STUDI VARIASI TEMPERATUR HARDENING TERHADAP KEKERASAN BAJA AISI 4340 MELALUI JOMINY TEST: STUDI VARIASI TEMPERATUR HARDENING TERHADAP KEKERASAN BAJA AISI 4340 MELALUI JOMINY TEST Kaleb Priyanto; Martinus Heru Palmiyanto; Bambang Hari Priyambodo; Edi Cahyono
Teknika Vol 8 No 1 (2023): April 2023
Publisher : Pusat Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52561/teknika.v8i1.205

Abstract

Baja AISI 4340 merupakan salah satu material yang dipilih sebagai bahan pembuatan komponen mesin. Bagian-bagian mesin seperti batang torak, poros, maupun roda gigi rentan terhadap gesekan dan tekanan. Gesekan dan tekanan yang diterima oleh komponen mesin akan menghasilkan deformasi, sehingga diperlukan perlakuan panas (heat treatment) untuk meningkatkan ketahanan fisis material baja. Penelitian ini bertujuan untuk mengetahui tingkat kekerasan material Baja AISI 4340 melalui pengujian jominy dengan variasi temperatur hardening. Empat buah spesimen Baja AISI 4340 disiapkan sebagai sampel uji di antaranya raw material, serta sampel dengan pemanasan 750°C, 800°C, dan 850°C. Setiap sampel diberi perlakuan sesuai standar uji jominy ASTM A255. Hasil pengujian Hardness Rockwell Tester Skala C (HRC) menunjukkan nilai rata-rata kekerasan spesimen dengan proses heat treatment 800°C mengalami kenaikan 6,01% dari raw material, yaitu sebesar 50,15HRC, 48,6HRC, dan 41,68HRC. Nilai kekerasan spesimen tertinggi diperoleh dari hasil pengujian spesimen dengan proses heat treatment 850°C yang mengalami kenaikan nilai kekerasan 7,31% dari raw material yaitu sebesar 51,45HRC, 44,55HRC, dan 44,06HRC. Hal tersebut menunjukkan bahwa semakin tinggi temperatur akhir pemanasan pada spesimen baja 4340, berdampak ada peningkatan nilai kekerasan yang dihasilkan.
Peningkatan Kesejahteraan UKM Mulyo Waras melalui Pelatihan Pembuatan Pakan Domba dengan Mesin Pencacah Semi-Otomatis: Improving The Welfare Of UKM Mulyo Waras By Training In Making Sheep Feed Using A Semi-Automatic Chopper Machine Karminto Karminto; Kaleb Priyanto; Martinus Heru Palmiyanto; Bambang Hari Priyambodo; Suhartoyo Suhartoyo; Nugroho Tritmoko
Jurnal Suara Pengabdian 45 Vol. 2 No. 2 (2023): Juni: Jurnal Suara Pengabdian 45
Publisher : LPPM Universitas 17 Agustus 1945 Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56444/pengabdian45.v2i2.762

Abstract

Wonogiri Regency, Central Java, is famous for its large number of residents who work as breeders, especially sheep/goat breeders. The feed for goats/sheep breeders in Wonogiri district is sourced from weeds. However, the enumeration was still done manually using a sickle, so the enumeration process was ineffective because it required more time and effort. Through this community service scheme, the process of making a machine for chopping weeds is carried out which will later be used as fodder for goats/sheep, especially in the Wonogiri area. The machine is driven by an electric motor and there is a chopping knife which is designed to be more effective. The results of this community service program show that the increase in sheep feed production increased from 200 kg/day before using the machine to 350 kg/day or an increase of up to 75% when compared to without the chopping machine.
Pemanfaatan Sampah Organik sebagai Bahan Pupuk Kompos dengan Mesin Pencacah Sampah di TPS Desa Gedangan Bambang Hari Priyambodo; Ryan Dhana Dyaksa; Nanda Ariyadi; Hafid Febriansah
Jurnal Suara Pengabdian 45 Vol. 2 No. 3 (2023): September: Jurnal Suara Pengabdian 45
Publisher : LPPM Universitas 17 Agustus 1945 Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56444/pengabdian45.v2i3.1049

Abstract

Sampah merupakan segala sesuatu yang tidak lagi digunakan yang dihasilkan dari aktivitas manusia. Pengolahan sampah harus menjadi perhatian penting agar tidak menyebabkan dampak negatif bagi manusia dan lingkungan. Tempat Pembuangan Sampah Reduce, Reuse, Recycle (TPS 3R) di Desa Gedangan Kecamatan Grogol Kabupaten Sukoharjo. TPS 3R memiliki fasilitas pengolahan sampah berupa mesin pencacah sampah, tetapi belum berjalan dengan maksimal dikarenakan mesin pengolah sampah mengalami kerusakan. Tujuan kegiatan ini adalah untuk pembuatan prosedur tentang cara penggunaan dan perawatan pada mesin pencacah sampah organik yang hasilnya untuk pembuatan kompos. Hasil dari kegiatan ini adalah berfungsinya kembali unjuk kerja mesin pencacah sampah organik. Hasil yang lain terbentuknya pedoman SOP (Standar Operasional Prosedur), cara perawatan mesin, dan cara menangani masalah yang terjadi pada mesin.
PERBAIKAN KEKERASAN DAN STRUKTUR MIKRO LOGAM KUNINGAN SEBAGAI BAHAN PROPELLER DENGAN METODE SHOT PEENING Margono Margono; Yanti Pasmawati; Nugroho Tri Atmoko; Rizqi Ilmal Yaqin; Bambang Hari Priyambodo
Jurnal Teknologi Terapan Vol 9, No 2 (2023): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31884/jtt.v9i2.431

Abstract

Brass metal is widely used as a supporting equipment material, one of which is a propeller. The propeller itself is one component of the boat that rotates and produces thrust energy. The continuous use of propellers results in degradation or a decrease in quality and service life. The degradation of the propeller is affected by the hardness, toughness, and corrosion resistance of the working environment. To improve the quality of the propeller, shot peening treatment was carried out on its surface. Shot peening is a continuous shooting process with fine particles in the form of steel balls on the surface of the object. Shot peening can increase the density of the microstructure and produce compressive residual stress which causes the surface hardness to also increase. Shot peening is carried out with variations in duration of 2, 4, 6, 8, and 10 minutes, 100 mm shooting range, and 7 Bar firing pressure. The steel ball particles used have a hardness of 40-50 HRC and a diameter of 5 mm. The results of the hardness test showed an increase in the surface hardness of the spesimens for a duration of 2, 4, 6, 8, and 10 minutes, respectively 189, 294, 302, 324, 330, dan 341 HV. The microstructure of the spesimen after shot peening looks tighter and denser. The highest hardness value is 341 HV or an increase of 80% compared to raw material.
Pendekatan Model Empiris untuk Prediksi Kehilangan Berat dan Laju Korosi AISI 304 pada Media Air Laut Rizqi Ilmal Yaqin; Mega Lazuardi Umar; Bambang Hari Priyambodo; Sugeng Slamet; Miftakhur Rohmah
Jurnal Metal Indonesia Vol 45, No 2 (2023): Metal Indonesia
Publisher : Balai Besar Logam dan Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32423/jmi.2023.v45.48-59

Abstract

Penelitian sebelumnya telah melakukan evaluasi menggunakan pendekatan empiris untuk prediksi korosi pada baja karbon rendah dan baja paduan rendah. Namun, hingga saat ini belum ada penelitian serupa yang dilakukan untuk baja tahan karat. Oleh karena itu, tujuan dari penelitian ini adalah menerapkan persamaan matematis guna mendapatkan model sederhana yang dapat digunakan untuk mengevaluasi laju korosi pada baja tahan karat akibat korosi air laut. Dalam penelitian ini, bahan yang digunakan adalah baja tahan karat komersial 304. Pengkajian sifat fisiokimia bahan ini meliputi analisis komposisi kimia, struktur mikro, serta sifat mekanik seperti kekuatan tarik dan kekerasan berasal dari speifikasi produk. Metode pengurangan berat digunakan untuk mengukur tingkat korosi, dilanjutkan dengan penerapan persamaan prediksi penurunan kehilangan berat. Analisis korosi selanjutnya didapatkan dari plotting kehilangan berat yang kemudian dikonfirmasi dengan pengukuran kualitas air laut dalam eksperiment dan foto makro. Hasil penelitian menunjukkan bahwa model dan eksperimen memiliki persentase kesalahan terbaik saat waktu perendaman mencapai 600 jam. Selain itu, persamaan model laju korosi menunjukkan kecenderungan yang mendekati hasil eksperimen dengan bertambahnya waktu perendaman. Dengan demikian, penggunaan pendekatan empiris dalam prediksi kehilangan berat dan laju korosi pada baja tahan karat memberikan kontribusi alternatif yang berharga dalam memperkirakan laju korosi pada jenis bahan ini. Selain itu, penggunaan model empiris ini juga mampu memprediksi laju korosi stainless steel di lingkungan laut, sehingga dapat dijadikan pertimbangan dalam merancang alternatif desain dengan material tersebut AbstractEvaluation of the use of an empirical approach for corrosion prediction has been carried out on low carbon and low alloy steels, but it still limited for stainless steel. The aim of this research is applying a mathematical equation to obtain a simple model, so that it can evaluate the corrosion rate of stainless steel due to seawater corrosion. Commercial stainless steel 304 was used as the tested material. The physiochemical properties in terms of chemical composition and microstructure as well as mechanical properties which are tensile strength and hardness were evaluated. The weight loss method is used for corrosion rate measurement, and further applicate to the the weight loss prediction equation. Corrosion analysis was obtained from plotting weight loss confirmed by water quality measurements and photo macro. The results of weight loss by model and experiment have the best percentage error at immersion time of 600 hours. Meanwhile, the equation for the corrosion rate model has a trend closer to the experimental results with increasing immersion time. The use of empirical approachment for weight loss prediction on the stainless steel can provide the alternative contribution for its corrosion rate prediction, especially in the marine environment. These results can be an alternative design consideration for future.
Effect of cooling media on hardness and microstructural changes in S45C carbon steel during heat treatment process Bambang Hari Priyambodo; Reni Laili; Rizqi Ilmal Yaqin; Suhartoyo Suhartoyo
Jurnal POLIMESIN Vol 21, No 3 (2023): June
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v21i3.3846

Abstract

S45C Carbon steel is commonly used in the manufacturing of structural or machine components due to its numerous advantages. However, to fulfill its intended purpose, the mechanical properties of this material require improvement. One approach to achieve this is through heat treatment using different cooling fluids. Therefore, this study aimed to examine the effect of varying cooling fluids on heat treatment of S45C carbon steel, specifically its hardness and microstructure changes. The experimental method employed involves heating the specimens in a furnace at 850oC for 30 minutes, followed by cooling using different fluids, namely water, ice water, and oil. The results showed that faster cooling led to an increase in hardness. In particular, the specimens cooled using water, ice, and oil yielded hardness values of 697 HV, 481 HV, and 248 HV, respectively. The highest hardness value of 697 HV was achieved using ice water, indicating an increase of around 281%. The phase changes observed on the surface of the specimen showed the dominance of martensite.
Co-Authors Abrori, M. Zaki Latif Achmad Nurhidayat Angger Bagus Prasetiyo Atmoko, Nugroho Tri Awan, Sang Alang Chamim, Moch. Demeianto Bobby Edi Cahyono Enita, Sarai Erich Maliwemu, Erich Hafid Febriansah Haniel, Haniel Juniawan Preston Siahaan Kacuk Cikal Nugroho Karminto Karminto Karminto, Karminto Margono Margono Margono Margono Martinus Heru Palmiyanto Mega Lazuardi Umar Miftakhur Rohmah Mohamad Akmal Nanda Ariyadi Priyanto, Kaleb Priyo Tri Iswanto Rauuf Nur Fattah Reni Laili Rizqi Ilmal Yaqin Rizqi ilmal yaqin, Rizqi ilmal Ryan Dhana Dyaksa Ryan Dhana Dyaksa Siahaan Juniawan Preston Sigiet Haryo Pranoto Subiyati Subiyati Sugeng Slamet Sugiyanto Sugiyanto Suhartoyo Suhartoyo Suhartoyo Suhartoyo Suhartoyo Suhartoyo, Suhartoyo Tumpu Mula Y. Yulianto Kristiawan Yanti Pasmawati Yuniar Endri Priharanto