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All Journal Jurnal Mechanical JURNAL KAJIAN TEKNIK MESIN Jurnal Konversi Energi dan Manufaktur Automotive Experiences
Siska Titik Dwiyati
Pendidikan Teknik Mesin, Fakultas Teknik, Universitas Negeri Jakarta
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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PENGARUH LAJU ALIRAN GAS TERHADAP NILAI KEKERASAN BAJA KARBON RENDAH HASIL HARDFACING DENGAN PROSES GTAW Siska Titik Dwiyati; Ferry Budhi Susetyo; A. Daniel Pandu Yudhantono
Jurnal Konversi Energi dan Manufaktur Vol. 5 No. 1 (2018)
Publisher : Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (745.606 KB) | DOI: 10.21009/JKEM.5.1.1

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh yang terjadi akibat adanya laju aliran gas 1 L/menit, 3 L/menit, dan 5 L/menit terhadap nilai kekerasan baja karbon rendah pada proses GTAW. Berdasarkan hasil penelitian, bahwa laju aliran gas 1 liter/menit menghasilkan nilai kekerasan paling tinggi pada baja karbon rendah yang telah di heat treatment, yaitu sebesar 88 HRB. Laju aliran gas 3 liter/menit pada karbon rendah menghasilkan nilai kekerasan sebesar 83 HRB, sedangkan laju aliran gas 5 liter/menit, menghasilkan nilai kekerasan sebesar 70 HRB. Baja tanpa heat treatment yang dilas dengan laju aliran gas 1 liter/menit menghasilkan nilai kekerasan sebesar 82 HRB. Laju aliran gas 3 liter/menit pada baja tanpa heat treatment menghasilkan nilai kekerasan sebesar 76 HRB, sedangkan laju aliran gas 5 liter/menit menghasilkan nilai kekerasan sebesar 65 HRB.
KEHILANGAN MASSA LAPISAN TEMBAGA-NIKEL/TEMBAGA-NIKEL-SILIKON PADA LARUTAN HCl Siska Titik Dwiyati; Muhammad Teguh Pangestu; Syamsuir
Jurnal Konversi Energi dan Manufaktur Vol. 7 No. 1 (2022)
Publisher : Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/JKEM.7.1.4

Abstract

The purpose of this study was to determine the effect of variations in the electroplating time of copper-nickel and copper-nickel-silicon on the corrosion rate of low carbon steel. Copper-nickel and copper-nickel-silicon electroplating were carried out for 10, 20, and 30 minutes. Then the corrosion test was carried out using the weight reduction method for 60 minutes, but every 15 minutes the sample was weighed to see the mass lost. The corrosion rate of copper-nickel plating specimens on low carbon steel in a 3.5% HCl corrosive solution at a plating time of 30 minutes has the highest resistance compared to other time variations of copper-nickel specimens, namely the 15th-minute mass loss of 0.0022 grams. , the mass loss of the second 15 minutes (30 minutes) was 0.0014 grams, the mass loss of the third 15 minutes (45 minutes) was 0.0014 grams, and the mass loss of the fourth 15 minutes (60 minutes) was 0.0021 grams. The corrosion rate of copper-nickel-silicon plating specimens on low carbon steel in a 3.5% HCl corrosive solution at a plating time of 20 minutes has the highest resistance compared to other time variations, namely mass loss in the first 15 minutes of 0.0021 grams, mass loss The second 15 minutes (30 minutes) was 0.0008 grams, the mass loss in the third 15 minutes (45 minutes) was 0.0013 grams, and the mass loss for the fourth 15 minutes (60 minutes) was 0.0015 grams.
Characteristics of Natural Fiber Composites Materials Reinforced with Aluminum and Copper Powder for The Performance of Automatic Motorcycle Clutch Pad Riyadi Riyadi; Ahmad Kholil; Januar Parlaungan Siregar; Siska Titik Dwiyati; Danang Budi Pratama; Ari Setiawan; Eko Arif Syaefudin
Automotive Experiences Vol. 6 No. 2 (2023)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.8878

Abstract

Currently, research on natural fiber composites (NFC) for automotive applications has attracted the attention of researchers and academics. Natural fibers such as coconut fiber and wood powder are mixed with metal materials such as aluminum and copper to obtain the composite characteristics of automatic motorcycle clutch pad materials. Coconut fiber and wood powder are suitable natural materials for composites and are easily obtained from waste. Natural fiber materials with metal reinforcement into composites are expected to produce materials suitable for friction materials such as clutch pads and brake pads with a good characteristic. This study aims to determine the characteristics of the coefficient of friction, wear, and hardness of NFC materials reinforced aluminum and copper powder for the performance of automatic motorcycle clutch pads. Experiments were carried out on various compositions of aluminum and copper powder. Tribometer testing was carried out to determine the friction coefficient and wear. Hardness testing using the Vickers method and testing the performance of automatic motorbikes with a chassis dyno test. The results show that the performances of the clutch pad with NFC-reinforced aluminum and copper show power and torque results that resemble the performances of genuine part materials in each operating cycle. The value of friction coefficient, wear, and hardness of this material are a value close to that of a genuine part clutch pad material. The improved performance of this material is expected to be considered in the manufacture of future clutch pads.
Co-Authors A. Daniel Pandu Yudhantono Ahmad Kholil Ari Setiawan Danang Budi Pratama Eko Arif Syaefuddin Eko Arif Syaefudin Fickri Widyarma Januar Parlaungan Siregar M. Bagus Priyo Hutomo Muhammad Bagus Priyo Hutomo Muhammad Teguh Pangestu Muhammad Teguh Pangestu Muhammad Yazid Nofendri, Yos Randika Hadi Pratama RIYADI Susetyo, Ferry Budhi Syamsuir Yuda Dwi Rama Putra Yunita Sari