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All Journal POSITRON Jurnal Fisika FLUX JMPM (Jurnal Material dan Proses Manufaktur) Indonesian Physical Review
Yana, Debi
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Earth & Planetary Sciences Education Energy Engineering Materials Science & Nanotechnology Mechanical Engineering Physics

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Perancangan dan Simulasi Sensor Volume Zat Cair berbasis Metamaterial Rektangular Syahputra, Romi Fadli; Aisah, Nurul; Ginting, Delovita; Yana, Debi; Husna, Ropiqotul; Fitrya, Neneng; Iwantono, Iwantono; Saktioto, Saktioto
POSITRON Vol 13, No 2 (2023): Vol. 13 No. 2 Edition
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Univetsitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/positron.v13i2.69410

Abstract

Pengukuran volume zat cair yang sensitif dapat dicapai menggunakan alat ukur atau sensor. Akan tetapi sensor volume zat cair tidak banyak mengembangkan, padahal pengukuran volume berdampak langsuang pada  nilai ekonomis, keberhasilan penelitian ilmiah,  dan kemanjuran dosis obat. Penelitian yang telah dilakukan hanya sebatas pada pengukuran pada kenaikan permukaan zat cair  dalam kenaikan tandon. menggunakan sensor fotodioda. Metamaterial telah banyak dikembangakan sebagai sistem sensor yang sensitif karena berbasis gelombang elektromagnetik, namun belum spesifik mengkajinya sebagai sensor volume zat cair. Tujuan penelitian ini adalah untuk merancang dan menyimulasikan penggunaan sensor metamaterial yang sensitif dalam pengukuran volume zat cair.  Sensor didesain dengan prinsip split ring resonator berbentuk rektangular (SRR-R) yang terdiri  dari cincin logam tembaga dan substrat FR4-Epoxy. Sensor SRR-R disimulasikan pada rentang frekuensi 350-850 MHz untuk mendeteksi perubahan volume zat cair (aquades, air tawar dan etanol) dari 5 - 44 ml. Hasil simulasi menunjukan terjadinya pergeseran frekuensi resonan spektrum S21 yang  jelas untuk masing-masing zat cair. Pergeseraan frekuensi resonan untuk sampel aquades terjadi pada frekuensi 403 – 527 MHz, air tawar 403 – 528 MHz, dan etanol 60 – 783 MHz. Distribusi medan E dan medan H menunjukan nilai maksimum sebesar 18662 V.  dan 43771 A. . Karakteristik kurva linier terjadi dalam rentang volume 12-44 ml untuk semua sampel zat cair. Sensor metamaterial SRR-R berhasil disimulasikan untuk mendeteksi perubahan volume zat cair dengan sensitivitas pengukuran aquades -1.3999 MHz/ml, air tawar -2.6833 MHz/ml, adan etanol -3.5685 MHz/ml.
Fabrikasi Papan Serat Tandan Kosong Kelapa Sawit dengan Penambahan Bahan Fluoresensi Fosfor Husna, Ropiqotul; Yana, Debi; Kusmawati, Intan; Aisah, Nurul; Ginting, Delovita; Syahputra, Romi Fadli
JMPM (Jurnal Material dan Proses Manufaktur) Vol. 7 No. 2 (2023): Desember
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v7i2.19615

Abstract

Serat bahan alam dapat dijadikan pengganti material komposit yang ramah lingkungan. Serat tandan kosong kelapa sawit (TKKS) merupakan salah satu serat alam hasil pengolahan industri kelapa sawit yang tersedia dalam jumlah yang besar. Pemfaatan serat TKKS sebagai papan serat yang inovatif belum banyak dikaji secara fisis. Penambahan zat aditif fluorosensi memberikan keunggulan produk kayu maupun papan serat agar memiliki nilai estetika yang tinggi. Tujuan penelitian ini memfabrikasi biokomposit papan serat inovatif berbasis serat TKKS dengan penambahan bahan fluoresensi fosfor. Papan serat difabrikasi dengan metode hand lay-up dan cold compaction. Komposisi utama papan serat terdiri atas serat TKKS, resin epoxy, dan 5 g bubuk posfor. Kandungan serat TKKS divariasikan mulai dari 76% sampai 86%. Hasil pengujian fisis menunjukkan nilai densitas papan serat berkisar 0,34 - 0,59 g/cm³ dan daya serap airnya 105,22 - 156,475%. Nilai kapasitas panas spesifik papan serat berikisar 0,34 - 2,2 J/g˚C dan konduktivitas termalnya 0,001-0,002 W/mK. Sementara, besar bending strength sebesar 1,30 – 6,42 Mpa yang relatif sebanding dengan papan serat bio-komposit. Penambahan fosfor berpengaruh terhadap sifat termal papan serat, sehingga cukup baik bila diaplikasikan sebagai bio-insulator yang memiliki fitur fluorosensi.
Fabrication of Palm Leaf Fiber Board Biocomposite for Thermal Insulation Material Kusmawati, Intan; Yana, Debi; Husna, Ropiqotul; Aisah, Nurul; Syahputra, Romi Fadli; Ginting, Delovita
Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat Vol 21, No 2 (2024): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/flux.v21i2.17003

Abstract

Utilizing palm frond biomass for the production of composite materials will have a positive impact on managing palm oil plantation waste. Palm frond fiber biocomposite products have been proven to have good mechanical properties. However, exploration of other physical properties, especially thermal insulation properties, has not been widely studied. As a non-conducting material, palm frond fiber has the potential to have good thermal insulation properties. This study aims to fabricate palm frond biocomposite fiberboard, which has potential as a thermal biocomposite material. Fiberboard is made using the manual hand lay-up technique and cold compaction using a press machine. The characteristics under consideration for the fiberboard in concern encompass its physical, mechanical, and thermal properties. The main ingredients utilized in the fabrication of fiberboard predominantly comprise palm frond fiber and epoxy resin, with five distinct sample variants denoted as PSP-1 (84% fiber:16% resin), PSP-2 (83% fiber:17% resin), PSP-3 (82% fiber:18% resin), PSP-4 (81% fiber:19% resin), and PSP-5 (80% fiber:20% resin). The experimental results obtained from the testing of physical parameters indicated that the density of fiberboard exhibited a range of values spanning from 0.28 g/cm3 to 0.55 g/cm3. Similarly, the fiberboard's water absorption capacity varied between 107.25% and 194.00%. The water absorption abilities display significant variability, as indicated by a large standard deviation ranging from 28.15% to 80.35%. When the density of fiberboard is high, its water absorption capacity tends to be low. Furthermore, the mechanical tests revealed that the fiberboard's flexural strength showed a range of values spanning 1.10-5.42 MPa. The magnitude of specific heat capacity for fiberboard is calculated to be between 2.1-3.5 J/g ̊C, while the thermal conductivity lies within the range of 0.001-0.0020 W/mK
FABRICATION OF THERMAL BIO-INSULATOR FROM OIL PALM TRUNK FIBER: ANALYSIS OF THERMAL, PHYSICAL AND MECHANICAL PROPERTIES Yana, Debi; Husna, Ropiqotul; Kusmawati, Intan; Ginting, Delovita; Syahputra, Romi Fadli; Taer, Erman
Indonesian Physical Review Vol. 7 No. 2 (2024)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v7i2.279

Abstract

The majority of air conditioning systems, including both cooling and heating systems, consume a significant amount of electrical energy as a result of their high electrical consumption and prolonged periods of operation. The use of thermal insulation materials in the building can help conserve electrical energy used for room conditioning systems. Natural fibers are used as an alternative in the production of thermal insulation, which is commonly referred to as bio-insulators. The utilization of oil palm trunk (OPT) fiber as the primary material for thermal insulation shows promise. This study aims to determine the specific attributes of OPT fiberboard that make it suitable for use as a thermal bio-insulator. The features examined encompass physical, mechanical, thermal, and fire-resistant attributes. The OPT fiber underwent a treatment process involving boiling at a temperature of 80℃ for a duration of 30 minutes. The fiberboard is manufactured using epoxy adhesive and calcium carbonate additive, and then printed using the hand lay-up process and cold-compaction technique. The physical characteristics of fiberboard indicate that there is a direct relationship between its density and water absorption.  Testing revealed that fiberboard has a low thermal conductivity and high heat capacity value. By including calcium carbonate, the burning time of the fiberboard was tested and seen to decrease, indicating a delay in the fiberboard burning process, as evidenced by the extended flame suppression time. The density of OPT fiberboard varies between 0.48 and 0.70 gr/cm3. The absorbency of water is inversely related to its density. Water absorption capacity generally rises with decreased density. The obtained heat capacity value is 1.28-2.38 J⁄(g℃). The mechanical value ranges from 1.00 to 3.55 MPa. The incorporation of calcium carbonate significantly impacts the thermal and mechanical characteristics of the fiberboard. The produced OPT fiberboard satisfies the requirements for good thermal, physical, and mechanical characteristics, making it a suitable bio-insulation material for buildings.
Co-Authors Aisah, Nurul Delovita Ginting, Delovita Erman Taer Husna, Ropiqotul Iwantono Iwan Barnawi Kusmawati, Intan Neneng Fitrya Romi Fadli Syahputra Saktioto Saktioto