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All Journal Jurnal Pengabdian Kepada Masyarakat Sakai Sambayan Jurnal Polimesin
Nafrizal Nafrizal
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Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Other

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PELATIHAN PENGEKSTRAKAN SERAT TKKS KEPADA KELOMPOK TANI DESA ONOHARJO, KECAMATAN TERBANGGI BESAR, LAMPUNG TENGAH shirley savetlana; Sugiyanto Sugiyanto; Zulhanif Zulhanif; Nafrizal Nafrizal
Jurnal Pengabdian Kepada Masyarakat Sakai Sambayan Vol 7 No 1 (2023)
Publisher : Lembaga Penelitian dan Pengabdian Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jss.v7i1.408

Abstract

Usaha perkebunan sawit menyumbang 42% dari kebutuhan minyak nabati dunia. Sektor industri sawit memberikan sumbangan yang cukup besar kepada perekonomian Indonesia, melalui ekspor Crude Palm Oil (CPO) dan produk-produk turunannya dengan rata-rata sebesar 14,19% per tahun dari total ekspor non-migas Indonesia. Di Lampung sendiri luas perkebunan sawit menurut data tahun 2019 adalah seluas 109,24 ribu hektar. agroindustri sawit ini tentu saja menghasilkan limbah antara lain tandan kosong kelapa sawit yang cukup berlimpah. Desa Onoharjo terletak di Kecamatan Terbanggi Besar. Kabupaten Lampung tengah. Masyarakatnya merupakan petani antara lain berkebun sawit. Limbah tandan kosong kelapa sawit (TKKS) dihasilkan dari perkebunan kelapa sawit. Limbah ini sebenarnya merupakan sumber serat. Serat ini merupakan material yang ramah lingkungan. Pada kegiatan pengabdian ini akan dilakukan kegiatan workshop pengabdian yaitu mengenai teknologi pengekstrakan serat dari tandan kosong kelapa sawit menjadi serat kepada kelompok tani di Desa Onoharjo. Serat yang telah diekstrak ini nantinya akan dapat digunakan untuk membuat produk-produk yang bernilai ekonomis. Serat diekstrak manual dan akan diberikan perakuan kimia menggunakan sodium hidroksida dan selanjutnya dikeringkan didalam alat pemanas. Hasil pre test dan post test menunjukan adanya peningkatan pemahaman peserta terhadap pengambilan dan pengawetan serat tandan sawit.
The Effect of Rotational Speed on Friction Stir Welding (FSW) Quality of Dissimilar Aluminum Alloy Series AA 1100 and AA 5052 Tarkono Tarkono; Frengki Tenando; Nafrizal Nafrizal; Irza Sukmana
Jurnal POLIMESIN Vol 21, No 1 (2023): February
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v21i1.2827

Abstract

Aluminum and its alloy have been widely used in various fields of industries. Aluminum has superior properties in terms of corrosion and has an excellent tensile strength compared to other lightweight metals. Aluminum AA 1100 series is an alloy such as copper, iron, chromium, manganese, and zinc, and the minimum aluminum content is 99.0%. Moreover, Aluminum AA 5052 series is an alloy of aluminum with magnesium (Mg). Welding is the process of joining two or more base metals that are joined at the contact surface with or without additives or fillers. Friction Stir Welding (FSW) is an example of solid-state welding or non-fusion welding. FSW uses friction energy for the welding process, which generates from the indenter's twists to material surface and pressing force. Welding parameters and indenter shape change the spiral form with an indenter rotation of 1750 rpm, 2230 rpm, 3500 rpm, and a translation speed of 22 mm/minute. The tests are tensile testing, hardness testing, and microstructure testing. This study found that indenter rotation and welding speed significantly affect the mechanical properties of aluminum series 1100 and 5052, which have been welded. The higher the rotation of the indenter, the higher the hardness value, the increase in hardness reaches 10.2%. However, the higher the rotation of the indenter causes a decrease in tensile strength, with a decrease of 18.6%.
Co-Authors Frengki Tenando Irza Sukmana Shirley Savetlana Sugiyanto Sugiyanto Tarkono Tarkono Zulhanif Zulhanif