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All Journal TEKNIK Rotasi Jurnal Simetris Jurnal Teknologi Jurnal Mechanical DINAMIKA Jurnal Ilmiah Teknik Mesin Media Mesin: Majalah Teknik Mesin VANOS Journal of Mechanical Engineering Education Jurnal Rekayasa Mesin JMPM (Jurnal Material dan Proses Manufaktur) Jurnal Rekayasa Material, Manufaktur & Energi Jurnal Elemen Jurnal Teknik Mesin Indonesia Infotekmesin STEAM Engineering : Journal of Science, Technology, Education And Mechanical Engineering Abdi Masya Journal of Mechanical Engineering Jurnal Rekayasa Energi dan Mekanika JUKESHUM: Jurnal Pengabdian Masyarakat Perwira Journal of Science and Engineering (PJSE) Teknika Bengawan :Jurnal Pengabdian Masyarakat Jurnal Pengabdian dan Pemberdayaan Masyarakat Indonesia Jurnal Foundry Nozzle : Journal Mechanical Engineering Perwira Journal of Community Development (PJCD) Jurnal Polimesin
Nurdin, Akhmad
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Nursing Public Health Social Sciences Transportation Other

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Journal : Rotasi

 1 
Pengaruh Alkali dan Fraksi Volume terhadap Sifat Mekanik Komposit Serat Akar Wangi – Epoxy Nurdin, Akhmad; Hastuti, Sri; D., Henanto Pandu; H., Rino
ROTASI Vol 21, No 1 (2019): VOLUME 21, NOMOR 1, JANUARI 2019
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (529.581 KB) | DOI: 10.14710/rotasi.21.1.30-35

Abstract

Perkembangan material komposit mulai bergeser dari bahan serat sintetis menjadi bahan berpenguat serat alam dan sangat potensial untuk dikembangkan di Indonesia. Salah satu serat alam yang bisa digunakan yaitu limbah padat hasil penyulingan akar wangi yang masih berupa akar dengan jumlah yang melimpah, sehingga limbah ini sangat potensial untuk dikembangkan sebagai penguat pada komposit. Tujuan dari penelitian ini untuk mengetahui pengaruh dari perlakuan alkali dan  fraksi volume  serat terhadap sifat mekanik dari komposit. Pada penelitian pertama, serat akar wangi yang bersih direndam larutan alkali (5% NaoH) selama 0, 2, 4, dan 6 jam. Selanjutnya dicuci sampai bersih dan didiamkan sampai kering. Pada penelitian kedua,hasil terbaik dari penelitian pertama digunakan sebagai acuan perendaman alkali, selanjutnya variasi yang digunakan fraksi volume serat 10%, 20%,30%, dan 40%. Matrik yang digunakan pada penelitan ini adalah Epoxy A dengan Harderner B. Spesimen untuk uji bending mengacu pada ASTM D790-02 dan uji impak ASTM D 5942-9. Hasil daripenelitian pertama, pengaruh perendaman alkali didapat tegangan bending dan harga imapak terbesar  39,05 MPa  dan 8,28 kJ/mm2  pada perendaman 6 Jam. Sedangkan hasil penelitian kedua, pengaruh penambahan fraksi volume serat didapat tegangan bending dan harga impak terbesar  43,40 MPa  dan 20,5 kJ/mm2 pada fraksi volume serat 20%.
The Effect of Time Variations in the Pure Aluminium Anodization Process Paundra, Fajar; Irfan, Angga; Sidik, M.farhan; Pujiyulianto, Eko; Nurdin, Akhmad
ROTASI Vol 26, No 3 (2024): VOLUME 26, NOMOR 3, JULI 2024
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/rotasi.26.3.72-77

Abstract

Aluminium is a white non-ferrous metal and is easily oxidized. In the industrial world, aluminium was chosen because it has the advantages of light density, corrosion resistance, easy fabrication (forged), high thermal and electrical conductivity. However, aluminium also has disadvantages, namely having a low hardness value when compared to steel. Pure aluminum hardness is only around 50 VHN. Therefore anodizing is expected to improve the hardness value of aluminium. This study aims to determine the effect of time variation on the value of changes in mass, hardness, oxide layer thickness, and microstructure. This study used aluminium 1100 with a time variation of 60, 70, 80, and 90 minutes, a concentration of H2SO4 of 10%, a current density of 6 A and a voltage of 20 V. The results of the study using a time variation of 60, 70, 80 and 90 minutes obtained the change in value the smallest mass occurred at 60 minutes of 0.4 g and the largest occurred at 90 minutes of 1.09 g. The smallest hardness value occurred at 60 minutes at 72.8 VHN and the highest occurred at 90 minutes at 86.7 VHN. The lowest layer thickness value occurred at 60 minutes of 7.96 µm and the highest occurred at 90 minutes of 10.79 µm
Co-Authors Abdul Muhyi Aisiah, Nisa Al Hassany, Ibnu Rosyid Anas Maulana Atina, Vivin Zulfa Azam Akmal Nur Irsan Bramono Pandu Bramono Pandupradityo Catur Pramono D, Febri Budi D., Henanto Pandu Darsono, Febri Budi Dwi Aries Himawanto Dwi Aries Himawanto Dwi Aries Himawanto Dwi Aries Himawanto Eko Pujiyulianto Fahrezi, Wibi Adrian Fajar Paundra Fajar Paundra Fajar Perdana Nurrullah Febri Budi Darsono H., Rino Hamid Abdillah Hariningsih, Hariningsih Hasan Bisri Hasan Bisri Bisri Hassany, Ibnu Rosyid Al ibnu rosyid al hassany al hassany Ida Ayu Putu Sri Widnyani Ida Bagus Dharmawan, Ida Bagus Indriyani Indriyani Irfan, Angga Ismail, Pitrah Rapi J. Istiyanto Joko Istiyanto K, Putra Andi Khasanah, Sabtun Ismi Laksono Trisnantoro Larasanto Larasanto Lilik Patonah Lutiyatmi Lutiyatmi, Lutiyatmi Mahmudi, Anas Yusuf Maulana Aziz Hidayanto Muhammad Munadi Muhammad Munadi Muhammad Rizky Hikmatullah Muhsin Muhsin Muhsin Muhyi, Abdul N, Fajar Perdana N, Muhammad Dwi Nugraha, Rifval Arya Nur Wahid, Nur Nurhadi . Nurhadi Nurhadi Pandupradityo, Bramono Paundra, Fajar Puguh Elmiawan Putty Yunesti Rafidan Triadji Ridwan Afandi Ridwan Afandi Rusiyanto Rusiyanto, Rusiyanto Rustam Sidiq S, Ardi Bagus S, Farid Nanda S. I. Khasanah S. N. Muhammad Sabtun Ismi Khasanah Sanusi, Arizal Ikhsan Setiawan, Faizal Shevalinzi, W. B. A. Sidik, M.farhan Sidiq, Rustam Sinta Rizky Anggraini Sri Hastuti Sri Hastuti Sudibtia Titio Koin Suparni Suparni Syamsudin, Arif Syamsul Hadi Syamsul Hadi Syamsul Hadi Hadi Tri Daryanto Tri Daryanto W.B. A. Shevalinzi Wahyu Anhar C Putra Wibowo, Rheza Ari Xander Salahudin Yudi Kurniawan Yusuf Mahmudi, Anas Zulfa Atina, Vivin