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All Journal AUSTENIT Machine : Jurnal Teknik Mesin JURNAL CRANKSHAFT International Journal of Research in Vocational Studies (IJRVOCAS) MACHINERY: Jurnal Teknologi Terapan Innovative: Journal Of Social Science Research International Journal of Mechanics, Energy Engineering and Applied Science (IJMEAS)
Putri, Fenoria
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Quenching Process Optimization of Leaf Springs as Tengkuit Material using the Taguchi Method Approach Gunawan, Indra; Putri, Fenoria; Junaidi, Subarkah
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 4 No. 1 (2024): IJRVOCAS - April
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v4i1.247

Abstract

Tengkuit is a traditional tool used by farmers to care for katuk, chilies, lumai, and others. The problem that farmers complain about is frequent wear and tear and chipping, which according to farmers and craftsmen must maximize quality and this must increase production costs and farmers' expenses. As time goes by, innovations have been made by humans to increase the durability of an object or material by increasing its hardness to save or reduce production costs. This research used qualitative approach with the taguchi method. The Taguchi method is a new engineering technique that aims to improve product and process quality while minimizing costs and resources. Taguchi's experimental design is more efficient because it allows searches involving many factors and numbers, and has good large-scale violent response. The maximum check value is the optimal parameter value for the tengkuit making process. Temperature and cooling media are very influential factors in testing hardness for making tengkuit. The results of the hardness research were shown as the lowest hardness value at a temperature of 600°C, with well water cooling media with a value of 24.3 HRC, and the highest hardness value at a temperature of 800°C. with bromus oil cooling media at a temperature of 700 ° C and a hardness value of 42.9HRC.
Analisis Kekuatan Sambungan Pada Belt Conveyor Dengan Metode Mecanical Fastener dan Cold Splicing Apridiansyah, Apridiansyah; Putri, Fenoria; Hendradinata, Hendradinata
MACHINERY Jurnal Teknologi Terapan Vol. 5 No. 3 (2024): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.14242107

Abstract

Belt conveyor is a material transportation tool that uses a belt (belt) as a means of transportation. Belt conveyors were chosen because of their versatile function and ability to work continuously and easy maintenance. The damage factor that often occurs on conveyor belts is tearing and breaking caused by rubbing the belt with the pulley. When the belt breaks or is replaced the connection commonly used is a mechanical fastener and cold splicing connection. In this study, it discusses the strength of the two connections for mechanical fastener connections using flexco and cold splicing connections using 3 different types of adhesives (sunpat eco glue, aibon glue, and dextone glue) drying time of 3 hours. The belt specifications used in this study are EP-100 x 2P x 3.0 x 1.5. to determine the strength of the connection, a tensile test was carried out on the belt connection. From the test results obtained the average value of each connection, mechanical fastener 7.72 MPa, cold splicing glue sunpat eco 8.86 MPa, aibon glue 2.09 MPa, and dextone glue 4.79 MPa. Where the highest tensile strength is obtained by cold splicing joints using sunpat eco glue 8.86 MPa. So from the test results it can be concluded that the cold splicing connection with sunpat eco glue is stronger than other types of conveyor belt connections.
Perancangan Miniatur Conveyor Berbasis Mikrokontroller Dengan Penggunaan Barcode GM66 Dan Pengaruh Kinerja Servo Samuel Tegar Eka Putra; Putri, Fenoria; Almadora Anwar Sani
MACHINERY Jurnal Teknologi Terapan Vol. 5 No. 3 (2024): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.14242117

Abstract

In industrial life, one of the efficient personnel of transporting goods is a conveyor that is needed in industry, such as currently sorting goods to be delivered to each city and province. The target position is placed in the barcode sensor room where there is an infrared proximity sensor, then the material is then spilled to the conveyor head. Analysis of the results is carried out by reading information from the data obtained and the same literature, so that the research can run well. Through experiments it can be known that the final time of the specimen with parameter conditions: weight variation 100.gr 170 gr, 200 gr, 220 gr, 240 gr at a speed of 20 rpm data average efficient time 53.92 seconds, 40 rpm data average efficient time 26.25 seconds, 60 rpm data average efficient time 20.19 seconds and 80 rpm data average efficient time 18.87 seconds that there is a significant difference in the results of the final time of the specimen. The results of the linear regression method show the relationship between the specimen end time value and the positive specimen distance between the y equation 0.3211x – 21.138 in other words, the lower the specimen end time value the mean time will increase, Thus, it can be used as a reference to determine the specimen end time value.
Analisis Umur Pakai Oli Pada Fan PLTU Tanjung Enim 3x10 MW Vernando, Deby; Hendradinata , Hendradinata; Putri, Fenoria; Utami, Ogi Meita; Medi, Ali
MACHINERY Jurnal Teknologi Terapan Vol. 6 No. 1 (2025): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.14942716

Abstract

One of the boiler auxiliaries for the running of the production process is the fan. The fan acts as a primary and secondary air supply and as a vacuum cleaner for the remaining ash when the boiler burns and is discharged into the atmosphere. In this fan often occurs over heat (over heat) one of the causes is the decline in oil quality. Lack of attention to the lubrication system if allowed to continue will experience over heat in the fan which will cause damage to the fan, especially the bearing due to the decrease in oil viscosity caused by operating hours and temperatures that affect the oil in the fan. The data obtained will be processed and analyzed with a Quantitative to see the effect of running hours and temperature on the kinematic viscosity of oil samples. From this study with a test of 40 ° C obtained results at 0 hours (92.88 cSt), 1923 hours (57.94 cSt), 2012 hours (53.26 cSt), 2195 hours (46.82 cSt), 2202 hours (44.75 cSt), 2207 hours (43.26 cSt). From the results of this study, running hours greatly affect the kinematic viscosity value and temperature treatment of oil affects the kinematic viscosity along with the increase in running hours
A ANALISIS PENGARUH SIFAT FISIK DAN THERMAL LIMBAH FLY ASH BATUBARA DAN KAOLIN PADA PEMBUATAN FIRE BRICKS Hidayat, Randy; Putri, Fenoria; Karmin, Karmin
MACHINERY Jurnal Teknologi Terapan Vol. 6 No. 1 (2025): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.15234179

Abstract

The increase in coal waste (fly ash and bottom ash) will have a negative impact on the environment if it is not managed or utilized. One of the uses of coal waste can be used as a mixture for making refractory bricks. Refractory bricks are made with a variety of materials with the fixed variable composition being 30% clay and 10% alumina and the independent variables FA and Kaolin waste with variations of 20%:40%, 30%:30%, 40%:20%. Samples of refractory bricks that has been made is tested by Density & Porosity Test, Compressive Strength Test, and Heat Conductivity Test. The results were obtained in the density and porosity tests on the 30% fly ash variation with sequential values of 1.782 gr/cm3 and 42.419%, as well as compressive strength of 7.24 N/mm2 and the highest thermal conductivity on the 20% fly ash variation with a value of 1.773 W/m.oK
Analisis Kegagalan Pipa Elbow Superheater 90° Terhadap Perlakuan Bending Menggunakan Hydraulic Pipa Bender Sampurno, Rachmat Dwi; Tafrant, Dodi; Putri, Fenoria; Hendradinata, Hendradinata; Arnoldi, Dwi; Ramadhan, Surya
JURNAL CRANKSHAFT Vol 8, No 2 (2025): Jurnal Crankshaft Vol. 8 No. 2 (2025)
Publisher : Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24176/cra.v8i2.15058

Abstract

Steam power plants are the most widely used power plants. The steam produced will be channeled using a superheater pipe. The component that often fails is the superheater elbow pipe. The method used is purposive sampling. The test method used is metallographic testing where the test is based on ASTM. For the results of reading the microstructure content, the percentage of the microstructure phase of the sample tested was factory factory elbow superheater pipe with a percentage of 53.50% pearlite and 27.50% ferrite, the flexible superheater elbow pipe sample contained 43.00% pearlite and 36% ferrite. . 00%, the leaking superheater elbow pipe sample contained 37.50% pearlite and 43.00% ferrite. So the conclusion is that the superheater elbow pipe which has high hardness and good pearlite and ferrite content is found in the factory ebow superheater pipe sample, the manual bending elbow superheater pipe experienced a reduction in the pearlite phase and the addition of a ferrite phase, so it can be concluded that this sample experienced a reduction in resistance and hardness, The Leaking superheater elbow pipe sample has high hardness due to the heat treatment process and a martensite phase appears due to heating, while the percentage of pearlite decreases and ferrite increases, and if there is more ferrite in the material, the pressure in the pipe will be decreased.Steam power plants are the most widely used power plants. The steam produced will be channeled using a superheater pipe. The component that often fails is the superheater elbow pipe. The method used is purposive sampling. The test method used is metallographic testing where the test is based on ASTM. For the results of reading the microstructure content, the percentage of the microstructure phase of the sample tested was factory factory elbow superheater pipe with a percentage of 53.50% pearlite and 27.50% ferrite, the flexible superheater elbow pipe sample contained 43.00% pearlite and 36% ferrite. . 00%, the leaking superheater elbow pipe sample contained 37.50% pearlite and 43.00% ferrite. So the conclusion is that the superheater elbow pipe which has high hardness and good pearlite and ferrite content is found in the factory ebow superheater pipe sample, the manual bending elbow superheater pipe experienced a reduction in the pearlite phase and the addition of a ferrite phase, so it can be concluded that this sample experienced a reduction in resistance and hardness, The Leaking superheater elbow pipe sample has high hardness due to the heat treatment process and a martensite phase appears due to heating, while the percentage of pearlite decreases and ferrite increases, and if there is more ferrite in the material, the pressure in the pipe will be decreased.
PENGARUH PENGULANGAN PENGEBORAN TERHADAP KEKASARAN PERMUKAAN LUBANG BOR PADA MATERIAL BAJA AISI 1045 Kholis, Almifta Adinul; Karmin, Karmin; Putri, Fenoria
MACHINERY Jurnal Teknologi Terapan Vol. 6 No. 2 (2025): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.16936021

Abstract

Salah satu masalah signifikan yang biasa muncul dan berpotensi mempengaruhi kualitas hasil pengeboran adalah perubahan kekasaran permukaan material. Untuk mengatasi masalah ini, kami melakukan analisis statistik terhadap data pengujian dengan menggunakan perangkat lunak ahli desain, untuk memastikan penyajian temuan analitis yang cermat. Pemrosesan data statistik ini melibatkan penggunaan analisis varians (ANOVA) untuk mengevaluasi dampak dari beberapa iterasi pengeboran terhadap kekasaran permukaan lubang bor. Hasil yang paling baik dalam hal kekasaran permukaan diamati pada sampel 16 mm, yang menunjukkan nilai kekasaran rata-rata 0,518 meter. Ketika dibor sekali pada kedalaman pemakanan 50 mm, spesimen 16 mm menunjukkan nilai kekasaran terendah yaitu 1,358 meter. Sebaliknya, spesimen 14 mm, ketika mengalami dua kali pengulangan pengeboran, menghasilkan nilai kekasaran permukaan tertinggi sebesar 0,738 meter. Selanjutnya, pada kedalaman pemakanan 50 mm, spesimen 12 mm, ketika dibor satu kali, menghasilkan nilai kekasaran dasar tertinggi sebesar 2,255 meter. Temuan kami menunjukkan bahwa jumlah pengulangan pengeboran memang memiliki dampak yang nyata, meskipun masih dalam kisaran nilai rata-rata untuk proses pembuatan sampel material baja AISI 1045. Analisis kontribusi persentase menggarisbawahi bahwa proses pengeboran dengan pengaruh paling besar terhadap tingkat kekasaran adalah proses pengeboran yang melibatkan dua kali pengulangan, dengan kontribusi 94,68%, dan tiga kali pengulangan, dengan kontribusi 87,57%, sedangkan satu kali pengulangan memberikan kontribusi 53,42%.  
Analisa Aerodinamika Bodi Mobil Sriwijaya Mechanical Engineering Squad Menggunakan Metode Simulasi Computational Fluid Dynamics (CFD) Hernando Ari Saputra; Hendradinata, Hendradinata; Putri, Fenoria
MACHINERY Jurnal Teknologi Terapan Vol. 6 No. 2 (2025): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.16938117

Abstract

Penelitian ini bertujuan untuk menganalisis aerodinamika pada bodi mobil Sriwijaya Mechanical Engineering Squad. Salah satu aspek penting dalam mobil hemat energi ialah bentuk mobil yang aerodinamis dan efisien dalam penggunaan bahan bakar. Aerodinamika yang baik dapat meningkatkan performa kendaraan seperti konsumsi energi yang lebih hemat, jarak tempuh yang lebih jauh. Untuk menganalisis aliran fluida pada geometri bodi mobil dibutuhkan metode simulasi Computational Fluid Dynamics. Hasil penelitian ini terdiri dari drag coefficient dan lift coefficient. Nilai drag coefficient  terendah terjadi pada Bapro z dengan kecepatan 15 m/s yang memiliki nilai drag coefficient  0.072 sedangkan lift coefficient terendah terjadi pada Bapro Y dengan kecepatan 15 m/s yang memiliki nilai lift coefficient -0.186. dapat disimpulkan pada bodi Bapro Z memiliki desain yang lebih aerodinamis karena memiliki drag coefficient  terendah. Sedangkan lift coefficient terendah berada pada Bapro Y di kecepatan 15 m/s yang artinya Bapro Y dapat melaju dengan stabil pada kecepatan 15 m/s.
ANALISIS LAJU PERPINDAHAN PANAS PADA MESIN PENGERING BIJI KOPI Irfan Dzaky, Muhammad; Al Hakim, M Rakha; Putri, Fenoria; Irfan Dzaky, Muhamad
Machine : Jurnal Teknik Mesin Vol 11 No 2 (2025): Machine : Jurnal Teknik Mesin
Publisher : Jurusan Teknik Mesin Fakultas Sains dan Teknik Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/m98kks70

Abstract

Kota Pagar Alam, sebagai salah satu daerah penghasil kopi di Sumatera Selatan, masih banyak menggunakan metode pengeringan tradisional yang bergantung pada sinar matahari dengan kekurangan sangat ketergantungan terhadap cuaca.Penelitian ini dilakukan secara eksperimental dengan memvariasikan debit udara sebesar 300, 400, dan 500 liter per menit serta temperatur udara pengering 60°C, 70°C, dan 80°C. Parameter yang diamati meliputi penurunan massa biji kopi, penyusutan kadar air, dan laju perpindahan panas. Alat bantu yang digunakan antara lain thermocouple, hot wire anemometer, RH meter, dan timbangan digital.Hasil penelitian menunjukkan bahwa semakin tinggi debit dan temperatur udara, semakin besar laju perpindahan panas dan semakin cepat penurunan kadar air biji kopi. Pada debit udara 500 LPM dengan suhu 80°C diperoleh laju perpindahan panas tertinggi sebesar 2.785 W, dengan penurunan massa terbesar sebesar 534 gram dari massa awal 2100 gram, kadar air akhir mencapai 38,93%.
PENGARUH QUENCHING TERHADAP KEKERASAN MATERIAL BAJA JIS SUP 9 Purnomo, Gito; Putri, Fenoria; Effendi, Sairul
MACHINERY Jurnal Teknologi Terapan Vol. 1 No. 1 (2020): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (369.411 KB) | DOI: 10.5281/zenodo.4540929

Abstract

JIS SUP 9 Steel is a medium carbon steel with chemical content of 0,544% C, 0,238% Si, 0,820% Mn, 0,0146% P, 0,0030% S, 0,754% Cr, 0,0102% Mo, 0,00665% Ni, 0,0390% Al, 0,0095% Co, 0,0156% Cu, 0,0142% Ti, 0,0011% Sn, 0,0022% As, 0,0039% Zr, 0,0039% Zr, 0,0036% Ce, 0.0022% Se, 0,0047% Te, 0,0402% Ta, 0.00021% B, 0,0012% Zn, 0,00053% La, 97,4% Fe. The carbon content allows the steel to be hardened by a heat treatment process, hardening and cooling media. The temperature variations used were 750 ℃, 800℃,900℃ with a holding time of 30 minutes and cooled using salt water, oil and vegetable oil. This study aims to determine the effect of hardening and quenching processes on the hardness of JIS SUP 9 steel. The test results data were analyzed using ANOVA with full factorial level design, main effect model design, and 3 replications assisted by Design-Expert software. From the hardness test, the maximum hardness value of 59.2 HRC was obtained from the hardening process with oil cooling media at a temperature of 800 ℃, while the minimum hardness value obtained from the brine cooling medium was 16.5 HRC at a temperature of 750 ℃. The results of the analysis revealed that the main factor that had the most influence on increasing the hardness of the test specimens was the brine quenching media factor with a contribution percentage of 98.93%. Meanwhile, the increasing factor of hardness in oil quenching media with a contribution percentage of 98.02% and quenching vegetable oil with a percentage contribution of 98.80%. Keywords: JIS SUP 9 Steel, Hardening, Quenching, ANOVA, Full Factorial
Co-Authors Ade, Ade Putra Maulana Agustin, Rafly Al Hakim, M Rakha Ali Medi Almadora Anwar Sani Anwar Sani, Almadora Anwar, Zainuri Apridiansyah, Apridiansyah Arif Budiman Arnoldi, Dwi Dodi Tafrant Effendi, Sairul Eka Nugroho, Fendra Fatahul Arifin, Fatahul Ginting, Muchtar Gumay, Muhammad Fadel Hamidi, Ahmad Faresy Hanggara, Gandi HB, Indra Hendradinata , Hendradinata Hendradinata, Hendradinata Hernando Ari Saputra Hidayat, Randy HIDAYATI, BAITI Indra Gunawan Indra HB, Indra HB Irfan Dzaky, Muhamad Irfan Dzaky, Muhammad Junaidi, Subarkah Karmin Karmin, Karmin Kholis, Almifta Adinul Mardiana Mardiana MARIA BINTANG Mushafiqih, Harry Nasution, Gaizka Ghifari Negash, Semir M Prabowo, Wahyu Triharto Pratama, Edo Pratama, Mohammad Fauzan Purnomo, Gito Ramadhan, Desril Aslam Ramadhan, Surya Riawan, Dito Rizky, Dany Agung Romli Romli, Romli Sailon, Sailon Sampurno, Rachmat Dwi Samuel Tegar Eka Putra Sani, Almadora Anwar Seprianto, Dicky Soegeng Witjahjo Sumarna, Herlin Sundari, Ella Suryana, Didi Utami, Ogi Meita Vernando, Deby Widagdo, Tri Zamheri, Ahmad Zikri, Ahmad