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All Journal Komunikasi Fisika Indonesia Jurnal Teknosains Jurnal Fisika Unand Jurnal Rekayasa Material, Manufaktur & Energi Fisitek : Jurnal Ilmu Fisika dan Teknologi JURNAL PENDIDIKAN TAMBUSAI Saintifik : Jurnal Matematika, Sains, dan Pembelajarannya Jurnal Elemen Jurnal Kumparan Fisika Pascal: Journal of Physics and Science Learning Navigation Physics : Journal of Physics Education Mimbar Kampus Journal of Technomaterial Physics Jurnal Energi Baru dan Terbarukan CHEDS: Journal of Chemistry, Education, and Science EINSTEIN (E-JOURNAL)
Jumiati, Ety
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Journal : Jurnal Rekayasa Material, Manufaktur

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Pengaruh Nilai Uji Tarik Terhadap Kuat Impak pada Komposit Serat Daun Nanas Hutauruk, Siti Aulia; Jumiati, Ety; Daulay, Abdul Halim
Rekayasa Material, Manufaktur dan Energi Vol 7, No 2: Juli 2024
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v7i2.20288

Abstract

Research has been conducted to determine the effect of tensile test values on impact strength. Using an experimental method and a quantitative approach, the variations in the composition of pineapple leaf fiber with polyester resin adhesive are as follows: sample A (40%:60%), sample B (45%:55%), sample C (50%:50%), and sample D (55%:45%). The molding process used a hot press with a pressure of 0.1 MPa and a temperature of 150°C for 15 minutes. The preparation and testing of specimens referred to ASTM D638-03 for tensile testing and ASTM D6110-10 for impact testing. The tensile test results were 24.71 MPa for sample A, 25.97 MPa for sample B, 26.00 MPa for sample C, and 20.73 MPa for sample D. The impact strength results were 0.02779 J/mm² for sample A, 0.02997 J/mm² for sample B, 0.03044 J/mm² for sample C, and 0.0306 J/mm² for sample D. The experiment showed that as the tensile test values increased, there was an effect on the impact strength results..
Pemanfaatan Sodium Alginat Dan Karbon Aktif Ampas Tebu Untuk Menurunkan Kadar Besi (Fe) Dan Mangan (Mn) Pada Air Sumur Bor Nasution, Annisa Wulan Dhari; Daulay, Abdul Halim; Jumiati, Ety
Rekayasa Material, Manufaktur dan Energi Vol 8, No 2: JULI 2025
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v8i2.23221

Abstract

Drilled well water contains heavy metals with high levels of iron (Fe) and manganese (Mn). This research aims to evaluate the successful use of sodium alginate and sugarcane bagasse activated carbon to reduce iron (Fe) and manganese (Mn) levels. The remediation method was successfully used to reduce iron (Fe) and manganese (Mn) levels in drilled well water. The quality of the activated carbon used has been tested and meets the SNI 06-3730-1995 quality standards. The remediation process was carried out with five composition variations used in this research, namely Sample A (SA 5% : KAAT 95%), Sample B (SA 15% : KAAT 85%), Sample C (SA 25% : KAAT 75%), Sample D (SA 35% : KAAT 65%), and Sample E (SA 45% : KAAT 55%). The results of this research show that the combination of activated carbon with bagasse is able to reduce iron (Fe) and manganese (Mn) levels significantly, with the best results in reducing iron and manganese levels found in sample C, namely with iron (Fe) levels of 89.72% and manganese (Mn) content of 99.82%. Based on the analysis results, this method was proven to be effective in reducing iron and manganese levels.
Co-Authors ., Masthura Abdul Halim Daulay Adiani Nasution, Arfa Ananda, Putri Dwi Aruan, Ririn sagita Azmi, Afifah Br Lubis, Lailatul Husna Dimas Pratama, Dimas Harahap, Nurlaila Sari Husna Br. Lubis, Lailatul Hutauruk, Siti Aulia Khairunnisa, Umi Khairunnisa Lubis, Fadilah Azzahra Lubis, Ridwan Yusuf Masthura, Masthura Miftahul Husnah Mughiroh, Hafizul Nabilah, Cinthia Farah Nanda, Meutia Nasution, Annisa Salsha Safira Nasution, Annisa Wulan Dhari Nasution, Nazaruddin Ningsih, Mulia Noviansyah, Kiki Nurfebia, Karina Pratiwi, Pebi Ajeng Rachmaini, Alya Rani Saputri Ratni Sirait, Ratni Sariah, Jati Nur Silalahi, Homsiah Mayang Sari Siti Munawaroh Siti Putri Masyitah Srg, Dini Anggraini Sulkha, Amalia Tambunan, Efrida Pima Sari Tiara, Finky Manda Umairoh, Ninda