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All Journal Jurnal METTEK (Jurnal Ilmiah Nasional Dalam Bidang Ilmu Teknik Mesin) VANOS Journal of Mechanical Engineering Education JOURNAL OF MECHANICAL ENGINEERING, MANUFACTURES, MATERIALS AND ENERGY Jurnal Teknik Mesin Journal of Welding Technology Jurnal Kajian Ilmiah Jurnal ComunitA Servizio ARMATUR : Artikel Teknik Mesin dan Manufaktur Majalah Info Sains
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Universitas Kristen Indonesia
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Analysis of the Effect of Calcination Time on Microstructure, Functional Groups, and Crystal Structure of LiNiO2 Battery Cathode Material Budiarto Budiarto; Edward Baringin Oloan Sihite; Medyawanti Pane
VANOS Journal of Mechanical Engineering Education Vol 7, No 1 (2022)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/vanos.v7i1.14533

Abstract

Battery cathode material is one of the four determinants of energy storage capacity, which is used as a power source in electronic equipment. laptops, and electric vehicles. Synthesis of the cathode material for LiNiO2 battery with one stage co-precipitation method, and variations in calcination time of 3, 6, 9 and 24 hours with a constant temperature of 7000C. Microstructure observations with SEM showed an uneven and homogeneous surface. The elemental compositions of Li, and Ni were analyzed by EDXS showing that Li and Ni metal decreased with increasing calcination time. The results of the crystal structure test using an X-ray diffractometer showed that with increasing calcination time the crystallite diameter decreased, but the dislocation density increased. The micro-lattice strain increased with increasing calcination time in the planes of the Miller hkl index (102), (104), (210), (108), and (113). The FTIR spectra show that the peak at wavenumber 433 cm-1 is caused by the asymmetric stretching vibration of Li–O in LiO6 and bending vibration of NiO6, namely [(Ni–O–Li)], appearing at 603 cm-1.
Pengaruh Temperatur Kalsinasi Terhadap Gugus fungsi, Struktur mikro, Dan Kerapatan dislokasi Pada Material Katoda Baterai LiNiO2 Budiarto
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 6 No. 2 (2022): Edisi Desember 2022
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v6i2.6905

Abstract

Battery cathode material is one of the four determinants of energy storage capacity, which is used as a power source in electronic equipment. laptops, and electric vehicles. Synthesis of LiNiO2 battery cathode material by solid state method, and variations in calcination temperature from 700 oC,  775 oC, and 850 oC , as wll as a fixed time of 6 hours. The results of the analysis using the FTIR spectrum showed that the vibration mode correlated with the vibrations of the octahedral units of NiO6 and LiO6 in the wave number zone of 400 - 700 cm−1. Thus, the peak around 433 cm−1 is caused by the Li–O asymmetric strain vibration of LiO6 and the NiO6 bending vibration, namely [(Ni–O–Li)], occurring at 551-603 cm−1. The results of the observation of the microstructure with SEM showed the size of the micron with an uneven and homogeneous surface. The elemental compositions of Li and Ni metals were analyzed by EDXS showing that the metal content of Li and Ni decreased as the calcination temperature increased. The results of the crystal structure test using an X-ray diffractometer showed that with the increase in the calcination temperature, the average diameter of the crystallites decreased, but the average dislocation density increased and the mean micro-lattice strain also increased ( 0.4817% to 15.8079%) and in the Miller hkl index plane. (102), (104), (210), (108), and (113).  
Pengaruh waktu aging terhadap perubahan sifat fisik paduan ingat bentuk (shape memory alloy) Cu-Zn-Al Rico Josua; Budiarto Budiarto
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol 4 No 1 (2023): Jurnal Armatur
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/armatur.v4i1.3343

Abstract

Cu-Zn-Al alloy is a shape memory alloy (SMA) that is widely used due to its high transformation temperature. This study aimed to determine the effect of variations in aging time (1.3 and 5 hours) on physical changes (crystal structure and hardness) in Cu-Zn-Al alloys. The method used in this study is powder metallurgy by combining Cu, Zn, and Al powders. Followed by mixing them and then compacting the alloy. The alloy was sintered at 400°C and quenched at room temperature for 24 hours. Then the alloy was given various heat treatments (aging) for 1.3 and 5 hours at 200 °C. Microstructure and hardness tests were carried out on Cu-Zn-Al alloys to determine the properties of the alloy after being treated. From the test, it was found that the hardness value increased from 303 HBN to 375 HBN (1 hour), 351 HBN (3 hours), and 320 HBN (5 hours), and there was a change in crystal size, dislocation density, and lattice strain.
Pengaruh Variasi Arus Listrik terhadap Struktur Kristal dan Sifat Mekanik pada Baja Karbon Sedang dengan Las Laser untuk Perbaikan Mold Budiarto Djono Siswanto; Cherie Yolanda Nainggolan
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 7 No. 1 (2023): Edisi Juni 2023
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v7i1.7768

Abstract

Penelitian ini bertujuan untuk mengetahui perngaruh variasi kuat arus pada las laser terhadap ukuran krstalit, kerapatan dislokasi, regangan kisi dan sifat mekanis pda baja karbon sedang serta kawat filler SKD 61. Peralatan las laser yang digunakan adalah mold laser welding machine “JAL” model JAL-UK-MW400. Kondisi proses pengelasan laser frekuensi 10 Hz, pulse 5,.5, 6.5, dan 7.5 ms, dan kuat arus pengelasan 60, 70, dan 80 A. Kemudian, dilakukan proses PWHT-Tempering pada temperatur 700 C selama 2 jam. Hasil uji XRD menunjukkan bahwa ukuran kristal meningkat dengan peningkatan kuat arus dengan ukuran kristal tertinggi terdapat pada spesimen dengan kuat arus pengelasan 80 A sebesar 12.8428 nm dan ukuran kristal terkecil terdapat pada spesimen matriks sebesar 8.7155 nm. Akan tetapi, untuk nilai kerapatan dislokasi dan regangan kisi mengalami penurunan seiring dengan peningkatan kuat arus pengelasan. Hasil uji sifat mekanik kekerasan dan kuat tarik menunjukkan bahwa setelah melalui proses PWHT terlihat bahwa nilai kekerasan dan kuat tarik mengalami penurunan, dimana sebelum proses PWHT nilai kekerasan dan kuat tarik tertinggi terdapat pada spesimen dengan kuat arus pengelasan 80 A di daerah pusat las, sebesar 388.46 HB dan 1340.187 MPa. Setelah melalui proses PWHT, nilai kekerasan dan kuat tarik tertinggi terdapat pada spesimen dengan kuat arus pengelasan 80 A di daerah pusat las, sebesar 232.07 HB dan 1011.09 MPa.
Pengaruh Waktu Tempering Terhadap Struktur Kristal, Kekerasan, dan Kuat Tarik Pada Baja VCN 150 Hanrevo Fauzi Haris; Budiarto; Andreas Reky Kurnia Widhi; Yulius Nanang Sutrisno
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 7 No. 2 (2023): Edisi Desember 2023
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v7i2.9472

Abstract

Baja VCN 150 termasuk dalam kategori baja ultra high-strength yang memiliki kekuatan sangat tinggi dan memadukan antara hardenability yang baik, keuletan, ketangguhan, dan ketahanan terhadap fatigue dan creep yang tinggi. Penulisan ini memaparkan pengaruh waktu tempering mengenai struktur kristal, kekerasan, serta kuat tarik pada baja vcn 150. Penelitian memakai metode penelitian kuantitatif yang menggunakan metode deskriptif dan studi eksperimental. Pengujian dilakukan melalui pengamatan struktur kristal memakai Difraktometer Sinar-X, uji kekerasan dan kuat tarik dengan Brinell. Hasil menunjukkan bahwa sifat mekanik dan fisik sangat dipengaruhi oleh proses quenching maupun tempering. Kekerasan material mengalami peningkatan setelah proses quenching dari 203 HB ke 393 HB menggunakan media quenching oli. Pada media pendingin air garam dapat meningkatkan kekerasan secara maksimal yaitu dari 203 HB ke 445,3 HB dan mengalami penurunan yang tidak signifikan kembali setelah melalui proses tempering. Penurunan kekerasan dari 445,3 HB ke 324 HB setelah 5 jam tempering. Penurunan ukuran kristal terjadi setelah proses tempering selama 5 jam yaitu dari 0,5766 (nm) ke 0,4725 (nm). Terjadi kenaikan nilai kerapatan diskolasi setelah proses tempering selama 5 jam yaitu 3,0679 (garis/mm²) ke 6,8527 (garis/mm²) begitu pula kenaikan regangan mikro setelah proses tempering selama 5 jam yaitu dari 0,1254 (ε) ke 0,2148 (ε).
The Effect of Weld Current and Weld Time on the Push Test, Nugget and Penetration Depth of Steel Plate SPFC590 with Weld T-Nut M10 Ardhi Alfarizzi Tanjung; Budiarto Budiarto; Surjo Abadi
Journal of Welding Technology Vol 5, No 1 (2023): June
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jowt.v5i1.3651

Abstract

This study explains the effect of the parameters of current strength and welding time. The welding process uses SPFC590 t1.2 steel plate material and Weld T-Nut M10 with a 50 kVA Dagensha brand spot welding process. The purpose of this research is to analyze the push test, nugget, and depth of penetration against engineering standards from PT HMC (Hyundai Motor Company). Using the factorial experimental design method to convey test layout formulations, understand the best conditions for setting machine parameters, and knowing the performance effect of parameter settings such as push tests, nuggets, and depth of penetration spot welding. The results of the push test between the SPFC590 t1.2 steel plate and Weld T-Nut M10 are the largest 17.7 kN and the smallest 15.4 kN. the test results have passed the results of the 6.5 kN engineering standard. Test results on nuggets the longer the melting occurs the wider the growth of the melt, and after the part is at room temperature the melting zone will become a nugget, for the average nugget test result is 5.6 mm and has passed the standard engineering results. Whereas in the penetration test the longer the welding time the deeper the penetration depth. The results showed that the parameters of current strength and welding time can affect the results of the size of the nugget and the depth of penetration of spot welding, but can reduce the strength of the push test. besides that the less the remaining plate that is not affected by penetration the smaller the strength of the push test, and the less depth of penetration. The smaller the strength of the push test and the higher the current strength and welding time, the larger the nugget size obtained.
Study Pembuatan dan Karakterisasi Paduan Ingat Bentuk CuAlZn Stefanus Andika Debby Purwanto; Budiarto; Bantu Hotsan Manullang; Syurkarni Ali; Din Aswan A Ritonga; Julian
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 7 No. 2 (2023): Edisi Desember 2023
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v7i2.10017

Abstract

A study on the preparation and characterization of CuAlZn shape-remembering alloys has been carried out. The objective of the study was to determine the effect of mass variation of Cu and Zn on crystal structure, hardness and tensile strength of CuAlZn shape-remembering alloys with powder metallurgy. Sintering at 900°C for 90 minutes, then cooled rapidly with air. The results of the tests performed show that mass variations in Cu and Zn metals can affect the hardness and tensile strength values of the alloy. The greater the mass of Cu metal and the smaller the mass of Zn metal, the higher the hardness and tensile strength values of the CuAlZn alloy remember the shape.The results of the test performed showed that variations in metal mass in Cu and Zn metal could affect the hardness and tensile strength values of the alloy. The greater the mass of Cu metal and the smaller the mass of Zn metal, will produce a higher value of hardness and tensile strength of Shape Memory Alloy.
Pengaruh Waktu Aging Terhadap Struktur Kristal dan Kekerasan Pada Mg-Zn Sebagai Material Biodegradable Ramanda Jiwa Satria Yohanes; Derlini; Budiarto; Sesmoro Max Yuda; Tony Siagian; Zakir Husin
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 7 No. 2 (2023): Edisi Desember 2023
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v7i2.10028

Abstract

Kemajuan teknologi dalam menangani kasus patah tulang (fraktur) belakangan ini berfokus pada metode pembuatan implan menggunakan material yang dapat diserap oleh tubuh (biodegradable) dengan syarat memiliki struktur dan kandungan yang menyerupai tulang manusia. Salah satu material yang menyerupai adalah magnesium (Mg) akan tetapi magnesium memiliki kekurangan dimana laju luruhnya tinggi sehingga memerlukan unsur lain sebagai paduan untuk mengurangi laju luruhnya. Dalam penelitian ini ditambahkan Zinc (Zn) yang memberikan manfaat untuk mengurangi laju luruh. Kombinasi Mg-Zn dalam implan dapat mempercepat proses penyembuhan tulang. Optimalisasi parameter untuk membuat paduan berpori Mg-Zn sebagai agen pengembang dengan melakukan variasi waktu kalsinasi 30, 60, dan 150 menit dengan temperatur tetap sintering 225°C. Karakterisasi struktur mikro paduan Mg-Zn dilakukan dengan pengujian XRD (X-ray Diffraction) dan untuk pengujian kekerasan dilakukan dengan metode Brinell. Hasil dari penelitian ini untuk ukuran kristal berdasarkan grafik cenderung menurun pada saat waktu kalsinasi 60 menit dan kembali naik pada waktu kalsinasi 150 menit. Untuk kerapatan dislokasi dan regangan mikro cenderung meningkat saat waktu kalsinasi 60 menit dan kembali turun pada waktu kalsinasi 150 menit. Sedangkan pengujian kekerasan paduan Mg-Zn semakin lama waktu kalsinasi maka semakin tinggi nilai kekerasannya. Kata Kunci: Kekerasan; Material Biodegradable; Metalurgi Serbuk; Paduan Mg-Zn; XRD
Pengaruh Variasi Temperatur Tempering Terhadap Struktur Mikro Dan Struktur Kristal Pada Baja Karbon Sebagai Bahan Mandrill Ikhrar Damai Tullah; Yulius Nanang; Budiarto Budiarto
Jurnal Teknik Mesin Vol 16 No 2 (2023): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.16.2.1102

Abstract

This writing begins with a mandrill that cannot be modified in a company, so the author wants to know the crystal structure and microstructure of the steel, as well as explain the composition contained in the steel being tested. Tests were carried out by observing the crystal structure using an X-Ray Diffractometer (XRD), observing the microstructure and material composition using Scanning Electron Microscopy – Energy Dispersive X-ray (SEM-EDX). The results show that the crystal structure and microstructure are strongly influenced by the quenching and tempering processes. The increase in crystal size occurred after the tempering process at 425° C from 34.33 nm to 52.31 nm. There was a decrease in dislocation density after tempering at 425° C from 0.00085 lines/mm2 to 0.00085 lines/mm2. Likewise, the micro strain after the tempering process at 425°C decreased from 0.25 (ε) to 0.19 (ε). The test material has several compositions such as iron (Fe), oxygen (O), manganese (Mn), sodium (Na), chromium (Cr), calcium (Ca) and carbon (C). Microstructure testing showed a decrease in iron Fe atoms after the tempering process from 65.79% to 42.96%, a decrease in atoms also occurred in manganese from 0.51% to 0.34% after the tempering process. There was an increase in oxygen atoms after the tempering process from 33.31% to 54.23%, an increase in the atomic presentation also occurred in sodium (Na) from 0.33% to 2.46% after the tempering process
Utilization of Solar Power Plants to Drive Organic Waste Shredding and Grinding Machines Rahmad Samosir; Bambang Widodo; Budiarto Budiarto; Manogari Sianturi; Medyawanti Pane
VANOS Journal of Mechanical Engineering Education Vol 9, No 1 (2024)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/vanos.v9i1.25014

Abstract

Solar power plants continues to experience good development and even PLTS can be used to overcome environmental problems, so this research aims to utilize renewable energy as a driving force for waste processing machines by designing organic waste chopping and grinding equipment. The specified motor power is 2 HP or 1.5 kW with 275 rpm, so the number of panels required is 12 pieces which are converted into AC from DC by the inverter. Based on power and rotation, the torque calculation results obtained are 2760 kg cm, the shaft diameter is 18.86 mm, the belt type is type A with a top belt width of 12.5 mm and a thickness of 8 mm, and transverse pegs with a width of 8 mm, a thickness of 7 mm. and 40 mm long based on ISO 2292 (according to pulley hub thickness). Based on the calculations and transmission design, a waste processing tool was built and then tested. From the tests, it was found that the power produced by PLTS was 1.5583 kW at 2239 Lux light to chop up 2 kg of organic waste. 
Co-Authors Andreas Reky Kurnia Widhi Anice I. Tuda Antonius D. Tyas Prasetyo Antonius, Dikky Ardhi Alfarizzi Tanjung Bambang Widodo Bantu Hotsan Manullang Bantu Hotsan Simanullang Bayu Fajar Saputro Benedigtus Tito Brillian Ardiana Putra Cherie Yolanda Nainggolan Derlini Dery Elfando Dian Permata Putri Din Aswan A Ritonga Edward Baringin Oloan Sihite Eva Magdalena Silalahi Hanrevo Fauzi Haris Hariyadi Hariyadi Ikhrar Damai Tullah Judo Ignatius Nempung Julian Manogari Sianturi Medyawanti Pane Melya Dyanasari Sebayang Melya Dyanasari Sebayang Mokosuli Yermia Samuel Muhammad Riski Arifiyanto Rahmad Samosir Ramanda Jiwa Satria Yohanes Regi Megantara Rico Josua Septian Arum Fajar Maulana Sesmoro Max Yuda Shena Alfath Stefanus Andika Debby Purwanto Surjo Abadi Syurkarni Ali Tahan M.T.N. Lumban Tobing Tony Siagian Yessie K. Kelly Yulius Nanang Yulius Nanang Sutrisno Zakir Husin