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All Journal POSITRON PRISMA FISIKA JURNAL FISIKA Jurnal Edukasi dan Penelitian Informatika (JEPIN) BULETIN FISIKA INDONESIAN JOURNAL OF APPLIED PHYSICS Jurnal Surya Masyarakat Jurnal Ilmu Fisika Jurnal Surya Masyarakat Computational and Experimental Research in Materials and Renewable Energy (CERiMRE) JRFES Wahana Fisika : Jurnal Fisika dan Terapannya
Bintoro Siswo Nugroho
Program Studi Fisika, Fakultas Matematika Dan Ilmu Pengetahuan Alam Universitas Tanjungpura
Religion Humanities Astronomy Computer Science & IT Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Physics Public Health Other

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Pengaruh Kadar Perekat Papan Komposit Tandan Kosong Kelapa Sawit pada Taraf Intensitas Bunyi Fatisa, Huril; Nugroho, Bintoro Siswo; Nurhanisa, Mega; Wahyuni, Dwiria; Asri, Asifa
JRFES (Jurnal Riset Fisika Edukasi dan Sains) Vol 10, No 1 (2023): Jurnal Riset Fisika Edukasi dan Sains
Publisher : Universitas PGRI Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22202/jrfes.2023.v10i1.6647

Abstract

A study was performed to analyze the sound intensity level and physical properties of a composite board made from oil palm empty fruit bunch (OPEFB) particles mixed with polyvinyl acetate (PVAc) adhesive. The composite boards were fabricated with various concentrations of adhesive, namely 8%, 10%, 12%, 14%, and 16%. The intensity level was measured at sound wave frequencies of 125 Hz, 250 Hz, 500 Hz, 1000 Hz, 2000 Hz, and 4000 Hz. The results showed that the highest sound intensity level, 74,2 dB at a frequency of 500 Hz, was found in the composite board with an 8% adhesive concentration. This composite board is categorized as a low-density composite board. The lowest sound intensity level, 58,6 dB at a frequency of 125 Hz, was found in the composite board produced with 16% adhesive concentration. This composite board is categorized as a high-density composite board. The physical property test results for all adhesive concentration variations showed that the resulting composite board density was 0,705-0,723 g/cm3, and the moisture content was 8,36%-9,66%. These values met the requirements of SNI 03-2105-2006. Keywords : Composite Boards, Sound Intensity Level, Composite Physical Properties
Studi Potensial Papan Komposit dengan Variasi Komposisi Serat Kulit Jagung dan Timbal (II) Oksida Sebagai Perisai Radiasi Pengion Asri, Asifa; Simanjuntak, Sinur Agustina Br; Nugroho, Bintoro Siswo
Wahana Fisika Vol 9, No 2 (2024): Desember
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/wafi.v9i2.74768

Abstract

Penelitian ini bertujuan untuk mengembangkan papan komposit yang terbuat dari serat kulit jagung dan timbal (II) oksida sebagai material perisai radiasi pengion. Serat kulit jagung yang kaya akan lignin dan selulosa dipilih sebagai bahan alam yang melimpah, sementara timbal (II) oksida dipilih karena memiliki densitas tinggi yang mampu menyerap radiasi. Papan komposit diproduksi dengan variasi komposisi filler serat kulit jagung dan timbal oksida menggunakan matriks polyvinyl acetate (PVAc). Hasil penelitian menunjukkan bahwa papan komposit dengan komposisi timbal oksida 30% memiliki daya serap radiasi tertinggi, yaitu 68,7%. Namun, penambahan filler timbal oksida yang terlalu tinggi menyebabkan penurunan ikatan antar komponen komposit, yang berdampak pada rendahnya nilai modulus elastisitas (MOE) dan modulus patah (MOR). Temuan ini menunjukkan bahwa kombinasi bahan alam dan material berbasis timbal memiliki potensi untuk dikembangkan sebagai perisai radiasi, meskipun diperlukan optimasi lebih lanjut terhadap sifat mekanisnya.
Pengaruh Komposisi Bahan Baku Pada Kualitas Briket Berbahan Dasar Daun Matoa (Pometia pinnata) Menggunakan Perekat Organik Asifa Asri; Qariatus Shalihah; Bintoro Siswo Nugroho
BULETIN FISIKA Vol 25 No 2 (2024): BULETIN FISIKA
Publisher : Departement of Physics Faculty of Mathematics and Natural Sciences, and Institute of Research and Community Services Udayana University, Kampus Bukit Jimbaran Badung Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/BF.2024.v25.i02.p17

Abstract

The use of fossil fuels as the primary energy source continues to increase, but their availability in nature is limited. Therefore, efforts are needed to reduce dependence on fossil fuels by using alternative fuels such as briquettes. This study focuses on fabricating briquettes from matoa (Pometia pinnata) leaves using two types of natural adhesives, wheat and tapioca flour, and characterizing them. The composition of raw materials and adhesives was varied with ratios of 50:50, 60:40, 70:30, 80:20, and 90:10 to assess the quality of the briquettes and their calorific values. Briquette fabrication involved several stages: carbonization using an oven, grinding and sieving, adhesives preparation, mixing raw materials with organic binders, molding briquettes into blocks with dimensions of 3.4×3.4×3.2 cm3, and drying. Briquette testing followed the Indonesian National Standard (SNI) No. 01-6235-2000. The results showed that the type of organic adhesives did not significantly affect briquette quality. However, variations in the composition of raw materials and adhesives resulted in differences in briquette quality. The optimal raw material-to-adhesive ratio was 80:20 (matoa leaves: organic adhesive) for wheat flour and tapioca. The briquette tests for the 80:20 (matoa leaves flour) composition showed a moisture content of 6.03%, a density of 0.56 g/cm³, a calorific value of 4083.35 cal/g, a combustion rate of 0.16 g/min, an ash content of 5.60%, and a weight loss at 950 °C of 63.30%. Meanwhile, the briquettes with an 80:20 (matoa leaves) composition had a moisture content of 5.23%, a density of 0.47 g/cm³, a calorific value of 4088.48 cal/g, a combustion rate of 0.15 g/min, an ash content of 6%, and a weight loss at 950 °C of 70.30%.
Co-Authors Agus Prasetiono Alfaridzi, Raihan Antini, Oktari Asifa Asri Asifa Asri Asifa Asri Asifa Asri Azrul Azwar Boni Pahlanop Lapanporo Delai, Departus Dwiria Wahyuni Elfriana, Rika Endhah Purwandari Fatisa, Huril Hasanuddin Hasanuddin Herkulanus, Herkulanus Hero Hartato Ica Sendawati Irfana Diah Faryuni Mega Nurhanisa Muhammad Azis Dwi Ludfi Irfandi Mustafa, Usliana Nurhasanah Nurhasanah Nurhasanah Nurhasanah Nurhasanah Nurhasanah Parnasari Parnasari Pernandes, Yudi Putra, Fikri Abdi Qariatus Shalihah Radhitya Perdhana REZKI, REZKI Riani Riani Riko Bintasa Rindiani Rindiani Rio Andreano Riza Adriat Simanjuntak, Sinur Agustina Br Sismita Sismita Siti Wildayati Susana Susana Untarto, Fikri Yudistira Eka Praja Wahyu Tri Hidayat Ya' Muhammad Arsyad Yayuk Susilowati Yudha Arman Yudi Rosandi Yuliana Nurmala Dewi Yulyanto Yulyanto Yulyanto Yulyanto Yuris Sutanto Zulfian Zulfian