Garuda - Garba Rujukan Digital

Pengaruh Pemadatan Dua-arah Penekanan terhadap Densitas dan Kekerasan AMC diperkuat Serbuk Silikon Dioksida Ricky Irwansyah; Rodika Rodika; Agus Wanto; Mego Wahyudi; Sukanto Wiryono
Infotekmesin Vol 14 No 2 (2023): Infotekmesin: Juli, 2023
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v14i2.1902

The compaction method of powder metallurgy technology is an important process in influencing the density and hardness of the resulting product. This study aims to determine the effect of a one-way compaction method compared to a two-way compaction method on the density and hardness of the resulting composite product. The experimental method for making aluminum matrix composites with silica sand reinforcement applies a compaction pressure of 4500 Psi. Mixing utilizing mechanical alloying used a horizontal ball mill machine. The density test refers to the Archimedes principle with the ASTM B962-17 standard, while the Rockwell Brinel hardness test uses the ASTM E110-14 standard. The results of the sample density test of the two-way compaction method of compaction showed a higher value compared to the sample density of the one-way compaction results, respectively; values of 2.132 g/cm3 and 2.119 g/cm3. The hardness value of the sample resulting from two-way compression compaction also has a higher value than the sample hardness resulting from one-way compression compaction, respectively; worth 43.67 HRB and 36.78 HRB. Furthermore, based on the results of microstructural analysis, the interlocking bonding occurs in composite samples with two-way compaction. It is also better than the interlocking mechanical bonding in composite samples resulting from one-way compaction.

Digitalisasi Manajemen Produksi dan Keuangan pada Usaha Kecil di Pangkalpinang, Kabupaten Bangka Wahyudie, Ilham Ary; Afriansyah, Riki; Rodika, Rodika; Sukanto, Sukanto
Indonesian Journal of Society Engagement Vol. 5 No. 3: Desember 2024
Publisher : Lembaga Kajian Demokrasi dan Pemberdayaan Masyarakat (LKD-PM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33753/ijse.v5i3.182

Small and Medium Enterprises (UKM) in Pangkal Pinang, Bangka, often need help managing production and finance due to limited application of information technology. To overcome the problems of managing production and finance, this community service activity was carried out to implement the "TACON" management information system application in several selected UKM. The method of implementing the activity includes identifying UKM in need, training them to use the application, implementing the system, and monitoring and evaluating its impact. The activity results showed increased operational efficiency, where the production process became more organized, and financial transparency increased with more accurate recording. In addition, the training provided also improved the competence of human resources in the related UKM. The main contribution of this activity is to strengthen the competitiveness of UKM in Pangkalpinang by applying appropriate information technology and providing a solid foundation for UKM in facing future business challenges. This program proves that, when appropriately implemented, information technology can be an effective tool in supporting the sustainability and growth of UKM.

Kajian Komposit Matrik Aluminium Pada Pembuatan Kampas Rem Sepeda Motor Diperkuat Alumina Hybird ( AL2O3/RHA/BA ) Dengan Metode Metalurgi Serbuk Rahman, Adhe fajarul; Rodika, Rodika; Budi, Abdul; Sukanto, Sukanto
DINAMIKA : Jurnal Teknik Mesin Vol 9, No 2 (2024): Dinamika : Jurnal Teknik Mesin
Publisher : Program Studi Teknik Mesin Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/dinamik.v9i2.9250

Saat ini penggunaan bahan asbes memicu kematian global mencapai 225.000 jiwa per tahun. Untuk saat ini kampas rem non-asbestos sudah di kembangkan dari tahun 2000-an. Kampas rem adalah komponen kendaraan bermotor yang berguna untuk memperlambat dan menghentikan laju kendaraan. Matrik pada penelitian ini digunakan serbuk aluminium yang mempunyai ukuran Particle Size Analyzer yaitu D50: 171.37 Âµm. perbandingan 93% Al dan 7% (AL2O3,RHA,BA), 90% Al dan 10% (AL2O3,RHA,BA), 87% Al dan 13% (AL2O3, RHA, BA) dengan berat setiap sampel adalah 35-40 gram. Dan penguat yang di gunakan pada penelitian ini yaitu alumina hybrid, abu sekam padi (RHA) dan abu ampas tebu (BA).Sampel yang di lakukan penelitian berbentuk sebuah cincin yang mempunyai diameter dalam 20 mm dan untuk diameter luarnya yaitu 50 mm, Â dan di cetak sebanyak 27 sampel dari hasil perhitungan full factorial dengan 2 faktor dan 3 level, dengan faktor presetase untuk penguat yaitu 3 level , ( 7%, 10%, 13% ) dan di ikutin dengan tekenan kompaksi sebesar 6000 Psi. Nilai uji kekerasan dan densitas terendah yang di dapatkan pada tekanan kompaksi panas sebesar 6000 Psi dengan presentase penguat 7%, 10%, 13% yakni 1,760 g/cm3 dan 46,33 HB. Dan untuk Nilai uji kekerasan dan densitas tertinggi yang di dapatkan pada tekanan kompaksi panas sebesar 6000 Psi dengan presentase penguat 7%, 10%, 13% yakni 2,065 g/cm3 dan 72,66 HB.

Kajian Komposit Matrik Alumunium Untuk Kampas Rem Sepeda Motor Diperkuat Pasir Silika Hibrid (SiO2/BA/RHA) Dengan Metode Metalurgi Serbuk Ridani, Hafiz Nopal; Sukanto, Sukanto; Rodika, Rodika
Jurnal Inovasi Teknologi Terapan Vol. 3 No. 1 (2025): Jurnal Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33504/jitt.v3i1.245

In vehicles, it is very important for driving safety, therefore a reliable and optimal braking system is needed. This research focuses on reducing the use of asbestos by replacing it with more environmentally friendly materials. In addition, this study also aims to determine the effect of differences in material composition variations and sintering temperatures on the density value and hardness test of the composites produced. The method used to make composites from aluminum is the powder metallurgy method, with the stages of the process of preparing tools and materials, mixing powders, compassing, and sintering. The mixing of aluminum powder, silica sand, rice husk ash and bagasse ash uses a horizontal ball mill machine and uses the parameters of Ball Powder Weight Ratio (BPR) 10:1, machine rotation speed of 90 rpm and milling time of 4 hours. Meanwhile, the heat compaction process uses a two-way method of pressing with a hydraulic pump machine with a pressure reader. The hot composting process is carried out with a temperature of 350°C held for 20 minutes and the pressure variation of the two-way compression used is 600Psi. The results of the density and hardness tests show that the value is increasing with the number of matrices used. The sample with a reinforcement percentage of 12%, the highest density value was 2.498 g/cm3 and the highest hardness value was 73.66 HB.

PERBAIKAN SISTEM PENDINGIN DAN PENGEREMAN PADA MESIN BUBUT DO ALL BERBASIS KOREKTIF MAINTENANCE DI BENGKEL POLMAN BABEL Syukori Putra, Nurul; Irwansyah, Riko; Tuparjono, Tuparjono; Rodika, Rodika
Prosiding Seminar Nasional Inovasi Teknologi Terapan Vol. 5 (2025): Prosiding Seminar Nasional Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

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This study aims to repair the cooling and braking systems of the DoAll LT 13 lathe at the Polman Babel Workshop by applying the Corrective Maintenance method. This lathe has been in operation for 28 years and has experienced failures in both the cooling and braking systems, resulting in decreased performance. The repair process began with problem identification using the 5 Why method to find the root causes of the failures. The analysis revealed that the main issues were a non-functional electric motor and the absence of caliper and master cylinder components. The repair steps included replacing the electric motor, installing the cooling hose and valve, and modifying the braking system using spare parts from a Panther vehicle. Testing after the repairs showed that both the cooling and braking systems were functioning properly. This study concludes that the application of Corrective Maintenance is effective in restoring the functionality of the DoAll LT 13 lathe and ensuring the availability of the machine for student practical activities.

MODIFIKASI BRAKE SYSTEM MESIN BUBUT DOALL Andre Rowanda; Aji Sultan; Husman; Rodika
Prosiding Seminar Nasional Inovasi Teknologi Terapan Vol. 4 (2024): Prosiding Seminar Nasional Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

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The mechanical workshop laboratory of Bangka Belitung State Manufacturing Polytechnic has various machine tools, including a DoAll lathe that has been used for 29 years and has various damages, especially to the braking system. The damage to the braking system is caused by the age of the machine and the difficulty of obtaining original spare parts, resulting in constraints in maintenance and malfunction of the braking system. Braking is a crucial aspect in lathe operation to prevent work accidents and machine damage, and is important in practicum activities, especially in thread making. This research uses the experimental design method by modifying the braking system of the DoAll lathe using the braking system of a motor vehicle (motor/car) to facilitate the replacement of parts. The purpose of this final project is to modify the braking system of the DoAll lathe so that it can return to optimal operation. Based on the function test results, the braking system modification using the Daihatsu Taft F70 car braking system is proven to work well and is able to brake without damage.

Pengaruh Pemadatan Dua-arah Penekanan terhadap Densitas dan Kekerasan AMC diperkuat Serbuk Silikon Dioksida Irwansyah, Ricky; Rodika, Rodika; Wanto, Agus; Wahyudi, Mego; Wiryono, Sukanto
Infotekmesin Vol 14 No 2 (2023): Infotekmesin: Juli, 2023
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v14i2.1902

The compaction method of powder metallurgy technology is an important process in influencing the density and hardness of the resulting product. This study aims to determine the effect of a one-way compaction method compared to a two-way compaction method on the density and hardness of the resulting composite product. The experimental method for making aluminum matrix composites with silica sand reinforcement applies a compaction pressure of 4500 Psi. Mixing utilizing mechanical alloying used a horizontal ball mill machine. The density test refers to the Archimedes principle with the ASTM B962-17 standard, while the Rockwell Brinel hardness test uses the ASTM E110-14 standard. The results of the sample density test of the two-way compaction method of compaction showed a higher value compared to the sample density of the one-way compaction results, respectively; values of 2.132 g/cm3 and 2.119 g/cm3. The hardness value of the sample resulting from two-way compression compaction also has a higher value than the sample hardness resulting from one-way compression compaction, respectively; worth 43.67 HRB and 36.78 HRB. Furthermore, based on the results of microstructural analysis, the interlocking bonding occurs in composite samples with two-way compaction. It is also better than the interlocking mechanical bonding in composite samples resulting from one-way compaction.

Kajian Komposit Matrik Aluminium Pada Pembuatan Kampas Rem Sepeda Motor Diperkuat Alumina Hybird ( AL2O3/RHA/BA ) Dengan Metode Metalurgi Serbuk Rahman, Adhe fajarul; Rodika, Rodika; Budi, Abdul; Sukanto, Sukanto
DINAMIKA : Jurnal Teknik Mesin Vol 9, No 2 (2024): Dinamika : Jurnal Teknik Mesin
Publisher : Program Studi Teknik Mesin Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/dinamik.v9i2.9250

Saat ini penggunaan bahan asbes memicu kematian global mencapai 225.000 jiwa per tahun. Untuk saat ini kampas rem non-asbestos sudah di kembangkan dari tahun 2000-an. Kampas rem adalah komponen kendaraan bermotor yang berguna untuk memperlambat dan menghentikan laju kendaraan. Matrik pada penelitian ini digunakan serbuk aluminium yang mempunyai ukuran Particle Size Analyzer yaitu D50: 171.37 Âµm. perbandingan 93% Al dan 7% (AL2O3,RHA,BA), 90% Al dan 10% (AL2O3,RHA,BA), 87% Al dan 13% (AL2O3, RHA, BA) dengan berat setiap sampel adalah 35-40 gram. Dan penguat yang di gunakan pada penelitian ini yaitu alumina hybrid, abu sekam padi (RHA) dan abu ampas tebu (BA).Sampel yang di lakukan penelitian berbentuk sebuah cincin yang mempunyai diameter dalam 20 mm dan untuk diameter luarnya yaitu 50 mm, Â dan di cetak sebanyak 27 sampel dari hasil perhitungan full factorial dengan 2 faktor dan 3 level, dengan faktor presetase untuk penguat yaitu 3 level , ( 7%, 10%, 13% ) dan di ikutin dengan tekenan kompaksi sebesar 6000 Psi. Nilai uji kekerasan dan densitas terendah yang di dapatkan pada tekanan kompaksi panas sebesar 6000 Psi dengan presentase penguat 7%, 10%, 13% yakni 1,760 g/cm3 dan 46,33 HB. Dan untuk Nilai uji kekerasan dan densitas tertinggi yang di dapatkan pada tekanan kompaksi panas sebesar 6000 Psi dengan presentase penguat 7%, 10%, 13% yakni 2,065 g/cm3 dan 72,66 HB.

PENGARUH NYALA API PADA LAS OXY-ACETYLENE TERHADAP KEKUATAN IMPAK PADA PROSES BRAZING BAJA KARBON RENDAH Naufal, Muhammad; Tuparjono, Tuparjono; Rodika, Rodika
Prosiding Seminar Nasional Inovasi Teknologi Terapan Vol. 2 No. 01 (2022): Prosiding Seminar Nasional Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

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Brazing is a method of joining metal materials through a heating process using an adhesive or filler that has a lower melting point than the melting point of the material to be joined. Oxy-acetelyne welding is a manual welding process where the metal surface to be joined is heated until it melts by an acetylene gas flame through the combustion of C2H2 and O2 with or without filler metal where the joining process is without pressure. In this study using an experimental method. The purpose of this study was to determine the impact strength of low carbon steel after the brazing process with variations in flame and root gap. The variations of the flame used are oxidation flame, neutral flame and carburizing flame with a root gap of 0.4mm, 0.6mm, and 0.8mm. The material used in this research is mild steel St37. The added material used is 3mm diameter brass wire. From the research that has been carried out, it shows that the energy absorbed and the impact value on welding after calculation with the highest value on a neutral flame with a Root gap of 0.8 and the lowest value on a carburizing flame with a Root gap of 0.4.

PENGARUH VARIASI (JARAK PENEKANAN)TERHADAP KEKUATAN SAMBUNGAN LAS GESEK (FRICTION WELDING) PADA BAJA KARBON S45C Rizqi fadilah, Muhammad; Rodika, Rodika; Aswin, Fajar
Prosiding Seminar Nasional Inovasi Teknologi Terapan Vol. 2 No. 01 (2022): Prosiding Seminar Nasional Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

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

Friction welding is a welding technique that melts metal. Jointing of metals by utilizing the heat generated by friction between metal surfaces in which variations in the pressure distance are determined. The purpose of this study is to determine the strength of the welded joint after the welding process by using variations in the pressure distance of 3mm, 4mm, and 5mm. The material used in this research is carbon steel S45C shaft. Studies have shown that welding at the deepest compression distance produces a very strong welded joint, the greater the stress during the welding process, the stronger the joint in the welding. Welding with compression distances of 4mm and 5mm. and the impact price is higher compared to the 3mm pressing distance.

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