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All Journal Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics POSITRON Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Jurnal Sains dan Teknologi Komunikasi Fisika Indonesia Jurnal Litbang Industri JOURNAL ONLINE OF PHYSICS Jurnal Fisika FLUX JMPM (Jurnal Material dan Proses Manufaktur) Jurnal Pengabdian UntukMu NegeRI Journal of Research and Technology JURNAL PHOTON Jurnal Fisika : Fisika Sains dan Aplikasinya Indonesian Physical Review Jurnal Fisika dan Terapannya Science, Technology, and Communication Journal
Delovita Ginting, Delovita
Department Of Physics, Universitas Muhammadiyah Riau, Pekanbaru 28291, Indonesia
Religion Agriculture, Biological Sciences & Forestry Astronomy Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Nursing Physics Social Sciences

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Perbandingan Nilai Kekuatan Tarik Komposit Menggunakan Metode Hand Lay Up Dan Metode Vari Lega Putri Utami; Delovita Ginting; Ahmad Kafrawi Nasution; Budi Istana
Sistem Informasi Vol 9 No 2 (2019): Jurnal Photon
Publisher : LPPM Universitas Muhammadiyah Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jp.v9i2.1357

Abstract

Some Types of the method of making composite materials are the Vacuum Assited Resin Infusion (VARI) Method and the Hand Lay Up Method. The purpose of this study was to compare the tensile strength of composite materials made using the hand lay up and VARI methods. The types of fibers used as composite materials are palm frond fibers and matrices used in polyester resin. Composites reinforced with palm fronds are printed using the hand lay up and VARI methods. The results showed the value of composite tensile strength with the hand lay up method of 27.37 MPa and composite tensile strength using the VARI method of 28.40 MPa. From the results of the study, the differences in the tensile strength values of the two methods were obtained.
Pengaruh Pelapisan Silane Coupling Agent Pada Papan Partikel Kenaf Dan Tandan Kosong Kelapa Sawit Delovita Ginting
Sistem Informasi Vol 10 No 1 (2019): Jurnal Photon
Publisher : LPPM Universitas Muhammadiyah Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jp.v10i1.1658

Abstract

This study reports the effect of coating Silane Coupling Agent (SCA) on composite surfaces. Composites made from composite particulate kenaf fiber and empty oil palm bunches passing 50 mesh sieves using epoxy resin. The particle board compacting process was carried out using a Hydrolic Press compacting machine with a pressure of 20 Bars, holding time 10 minutes in the initial stages, and continued using a Hot Press compacting machine with a pressure of 20 Bars, temperature 150 oC, holding time 15 minutes. The process of treating the Silane Coupling Agent solution on the composite surface is done manually layered on the composite surface. Composites tensile strength were tested referring to ASTM D 638-14, impact strenght tested referring ASTM D 256-04, and Water Absorption using ASTM D 570. Surface examination was made with a Scanning Electron Microscope (SEM). The Silane Coupling Agent (SCA) coating has succeeded in increasing the bond between kenaf fibers, empty oil palm bunches and epoxy be effective and in accordance with increasing tensile strength, impact strength and water absorption.
Pengaruh Perlakuan Filler Serat Kulit Buah Pinang Menggunakan Silane Coupling Agent terhadap Sifat Fisis dan Mekanis Papan Partikel Delovita Ginting; Wulandari
Sistem Informasi Vol 12 No 2 (2022): Jurnal Photon
Publisher : LPPM Universitas Muhammadiyah Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jp.v12i2.2119

Abstract

This study aims to examine the effectiveness of the addition of Silane Coupling Agent on physical properties (density, moisture content, thickness expansion, and water absorption) and flexural strength in the manufacture of areca nut peel fiber particle board with urea formaldehyde adhesive. The betel nut peel fiber was alkalized using NaOH for 2 hours, then mashed using a grinding machine until it passed a 50 mesh sieve. The betel nut skin fibers that have passed the sieve are then treated with a solution of Silane Coupling Agent. The concentration variations of the Silane Coupling Agent solution were 0%, 2%, 4%, 6% and 8%. The betel nut peel fiber that has been synthesized with a silane coupling agent solution is then mixed with urea formaldehyde resin in a ratio of 30/70 in weight percent. The particleboard compaction process uses a Hydraulic Cold Press compacting machine with a pressure of 5 bar and a holding time of 120 minutes. The results of this study indicate that the silane coupling agent treatment increases the bond between the matrix and filler as shown in the SEM test on particle boards with 8% silane coupling agent treatment. The results of the particleboard test on density, percentage of moisture content, percentage of thickness development have met the standard of SNI 03-2105-2006. The results of the water absorption test have met the ASTM D 570 standard. The results of the flexural strength test on the SCA 6% variation SNI 03-2105-2006 decorative particle board type 8 and the SCA 8% variation have met the SNI standard 03-2105-2006 structural particle board type 10.5.
Sistem Audit Intensitas Konsumsi Energi (IKE) Listrik Berbasis GUI Matlab Yulia Fitri; Asmawati Asmawati; Delovita Ginting
Sistem Informasi Vol 12 No 2 (2022): Jurnal Photon
Publisher : LPPM Universitas Muhammadiyah Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jp.v12i2.3722

Abstract

Audit energi pada gedung atau bangunan sangatlah penting terutama penggunaan energi listrik, porsi pemakaian serta alokasi dana untuk penyediaan energi listrik merupakan salah satu yang dominan. Langkah untuk menghindari terjadinya pemborosan energi listrik, direktorat pengembangan energi telah membuat petunjuk konservasi energi pada bangunan gedung yang mengkonsumsi energi cukup besar. Pada penelitian ini telah di bangun sebuah sistem audit Intensitas Konsumsi Energi (IKE) listrik berbasis GUI yang sesuai dengan peraturan pemerintah pada SNI 6196 tahun 2011. Sistem audit Intensitas Konsumsi Energi (IKE) listrik dapat digunakan pada empat klasifikasi gedung yaitu komersial, rumahsakit, hotel, dan swalayan. Pengujian sistem audit menggunakan data Gedung Dakwah Pimpinan Wilayah Muhammadiyah(PWM) Provinsi Riau. Hasil pengujian sistem audit Intensitas Konsumsi Energi (IKE) listrik berbasis GUI Matlab yang dibangun dibandingkan dengan hasil perhitungan dengan Microsoft excel menunjukan bahwa perbedaan perhitungan kecil dari 0,0001.
PEMANFAATAN KARBON AKTIF TEMPURUNG KELAPA SEBAGAI CARBON BLACK TINTA SERBUK Adila Fitri Yani Yani; Viviana Lubis; Delovita Ginting; Romi Fadli Syahputra
JOURNAL ONLINE OF PHYSICS Vol. 8 No. 2 (2023): JOP (Journal Online of Physics) Vol 8 No 2
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v8i2.20503

Abstract

Karbon aktif tempurung kelapa berpotensi sebagai biomassa untuk bahan baku carbon black tinta bubuk karena ketersediannya yang berlimpah. Tujuan penelitian ini adalah menghasilkan tinta serbuk (toner) yang berkualitas baik untuk pengaplikasian printer laser. Proses fabrikasi tinta serbuk terdiri atas tahap pencampuran dengan bubuk besi, polimerisasi dan tahap pengaplikasian. Tahap pencampuran dengan fraksi massa arang aktif CBS-1 (60:40), CBS-2 (40:60), CBS-3 (80:20) dengan bubuk besi. Tahap polimerisasi dilakukan dengan pencampuran styrene acrylic dengan serbuk karbon. Pencampuran dilakukan dengan menggunakan hot plate pada suhu 80.5°C kecepatan 300 rpm selama 60 menit. Proses pencucian dengan menggunakan deionisai water dan didiamkan selama 24 jam. Hasil endapan disaring menggunakan kertas saring wattman. Pengeringan dilakukan selama 24 jam agar mendapatkan polimerisasi tinta bubuk yang sempurna. Setelah kering, dilakukan penghalusan tinta serbuk dengan menggunakan mortar. Hasil pengujian kerapatan tinta serbuk didapatkan nilai yang terkecil terdapat pada sampel CBS-4 0,83 gr/cm3 sedangkan yang terbesar terdapat pada sampel CBS-3 0,88 gr/cm3. Hasil pengujian morfologi dengan scanning electron microscopy (SEM) memperlihatkan tinta serbuk yang relatif homogen. Hasil analisis citra didapatkan pada sampel CBS-3 menunjukkan hasil kode warna yang memiliki elemen hitam dan perbandingan tinta serbuk yang paling melekat. Hasil pengujian PSA menunjukkan partikel terkecil 0.115 µm, partikel terbesar 592.387 µm.
The Analysis Of Micromechanic On Creating Of Gypsum Board Strengthened By Bintaro Fruit Fiber (Cerbera Manghas) With 3d Orientation Tri Adelia; delovita vita ginting; Romi Fadli Syahputra
Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics AL-FIZIYA JOURNAL OF MATERIALS SCIENCE, GEOPHYSICS, INSTRUMENTATION AND THEORETICAL PHYSICS VOL.5, N
Publisher : Physics Study Programme, Faculty of Science and Technology UIN Syarif Hidayatullah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/fiziya.v5i2.29783

Abstract

This research succeeded in modifying the manufacture of gypsum board with the addition of natural fiber, namely bintaro fruit with the 3D orientation arrangement method. The raw materials for this research are gypsum flour and Bintaro fruit fiber as a matrix and filler. Bintaro fruit fiber previously carried out an alkalization process where the fiber was soaked in a solution of NaOH and distilled water for 24 hours. The manufacture of composites using the ratio of the matrix mass fraction and the filler mass fraction is as follows 100: 0, 99: 1, 98: 2 and 97: 3. The characterizations carried out include density test, moisture content test, flexural strength test and micromechanical analysis. Gypsum board composite based on micromechanical calculations resulted in the highest density value in the control sample, in the best density value was at the filler fraction of 3%, the best moisture content value in the control sample, the flexural strength test value the best of the control sample, but the filler fraction is 3% of the sample with the best fracture resistance. 3D orientation in theory and practice has fulfilled the principle that it is able to increase the physical and mechanical value of gypsum board.
CHARACTERISTICS OF TERMITE ANTI PARTICLE BOARD FROM BINTARO FRUIT FIBER WITH BINTARO FRUIT SEED EXTRACT COATING USING SPRAY COATING METHOD Delovita Ginting; karnila ila sukma
Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics AL-FIZIYA JOURNAL OF MATERIALS SCIENCE, GEOPHYSICS, INSTRUMENTATION AND THEORETICAL PHYSICS VOL.5, N
Publisher : Physics Study Programme, Faculty of Science and Technology UIN Syarif Hidayatullah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/fiziya.v5i2.31241

Abstract

Termites are pests that damage wooden furniture. Termite attacks on wooden furniture are getting higher and wider so that the value of losses due to termite attacks on furniture is increasing from year to year. This research has succeeded in making particle boards from bintaro fruit fibers as fillers and urea formaldehyde resin (UF) as a matrix with a composition of filler mass fractions: the matrix of the particle board to be made is 30:70. The particle board that has been made is then coated using bintaro seed extract and UF resin using the spray coating method. The extract mass fractions of bintaro seeds and UF resins in this study were sample 1 (90:10), sample 2 (80:20), sample 3 (70:30), sample 4 (60:40) and sample 5 (50:50). The physical characterization of particleboard includes density, water absorption and moisture content. The mechanical characterization of particle boards is the bending strength and characterization of particle boards to resistance to termite attacks. The results of this study show that particle boards that have optimum values are sample particle boards 1 with a density value of 0.864 gr / cm³, water absorption of 4.28% which has met SNI 03-2105-2006 and the results of testing the resistance to termites 3.45% have met SNI 01-7207-2006. Because in the manufacture of particle boards are influenced by the structure and physical shape of the raw materials used.
Biokomposit Papan Partikel diperkuat Serat Alam Sabut Kelapa dan Tempurung Kelapa dan matriks epoksi Delovita Ginting; Romi Fadli Syahputra; Wirdatul Jannah
JMPM (Jurnal Material dan Proses Manufaktur) Vol 7, No 1 (2023): Juni
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v7i1.18375

Abstract

Papan partikel serat alami (biokomposit) dapat dijadikan alternatif pengganti material konvensional karena ramah lingkungan, sumber terbarukan dan sifatnya yang dapat terurai secara alami. Penelitian ini menyajikan studi tentang karakterisasi mekanik dan fisis papan partikel polimer diperkuat serat alam yaitu sabut kelapa dan tempurung kelapa. Variabel tetap dalam penelitian ini adalah jumlah fraksi matriks yaitu resin eposki. Variabel fraksi massa penyusun papan partikel dalam penelitian ini yaitu sabut kelapa:tempurung kelapa :epoksi adalah PP1 (30:0:70), PP2 (22,5:7,5:70), PP3 (15:15:70), PP4 (7,5:22,5:70), dan PP5 (0:30:70). Papan partikel diuji kelenturannya menggunakan mesin Universal Testing Machine mengacu pada ASTM D 7-90-03, ketangguhan impak sampel menggunakan mesin Impact Tester mengacu pada ASTM D 6110. Sampel diuji kerapatan dan pengembangan tebalnya mengacu SNI 03-2105-2006. Hasil pengujian sampel menunjukkan nilai kerapatan optimum pada sampel PP3 yaitu sebesar 1,05 g/cm3 dengan sampel diperkuat sabut kelapa dan tempurung kelapa. Hasil pengujian nilai uji ketangguhan impak optimum pada sampel PP5 yaitu sebesar 3.20 J/cm2 dan hasil pengujian nilai uji kuat lentur optimum pada sampel PP5 yaitu 382,29 Kgf/cm2 dengan sampel diperkuat tempurung kelapa. Natural fiber particle board (biocomposite) can be used as an alternative to conventional materials because it is environmentally friendly, a renewable source and is naturally biodegradable. This research presents a study on the mechanical and physical characterization of natural fiber reinforced polymer particle board, namely coconut coir and coconut shell. The fixed variable in this study was the number of matrix fractions, namely epoch resin. The variable mass fraction of the particle board in this study was coconut coir:coconut shell:epoxy was PP1 (30:0:70), PP2 (22,5:7,5:70), PP3 (15:15:70), PP4 (7,5:22,5:70), and PP5 (0:30:70). Particle board was tested for flexibility using the Universal Testing Machine referring to ASTM D 7-90-03, the impact toughness of the samples using the Impact Tester machine referring to ASTM D 6110. The samples were tested for density and thickness expansion referring to SNI 03-2105-2006. The results of the sample testing showed that the optimum density value for the PP3 sample was 1.05 g/cm3 for the reinforced coconut coir and coconut shell samples. The test results for the optimum impact toughness test value on the PP5 sample were 3.20 J/cm2 and the test results for the optimum flexural strength test value on the PP5 sample were 382.29 Kgf/cm2 with the coconut shell reinforced sample.
EFEK SINTESIS SILANE COUPLING AGENT PADA SIFAT FISIS DAN MEKANIS KOMPOSIT DENGAN PENGISI SERBUK KENAF DAN RESIN EPOKSI Delovita Ginting; Reka Nuansa Fitri
JFT : Jurnal Fisika dan Terapannya Vol 8 No 2 (2021): DESEMBER
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jft.v8i2.25316

Abstract

This study aims to see the effectiveness of the chemical treatment of silane coupling agent on the physical properties (density and water absorption) and mechanical properties (tensile strength and impact strength) of the kenaf powder composite. Kenaf powder was alkalized using NaOH for 4 hours, then mashed using a grinding machine until it passed a 50 mesh sieve. The kenaf powder that has passed the sieve is then chemically treated with a silane coupling agent solution. Variations in the concentration of the silane coupling agent solution used were 0%, 10%, 20% and 30% of the mass of kenaf powder. Kenaf powder which has been synthesized with a silane coupling agent is then mixed with epoxy resin adhesive with a ratio of 30/70 in weight percent. The composite compaction process uses a Hydrolic Hot Press compacting machine with a pressure of 20 Bar at a temperature of 125 oC and a holding time of 15 minutes. The result of this research is that the treatment with 20% silane coupling agent on kenaf powder is effective in improving the physical and mechanical properties of the composite.
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.
Co-Authors - Rusmi -, Yeeri Badrun Adila Fitri Yani Yani Ahmad Kafrawi Nasution Ahmad Kafrawi Nasution, Ahmad Kafrawi Aisah, Nurul Anggreani, Selvia Ariyani Asmawati Asmawati Ayu Risti Candini Budi Istana Candini, Ayu Risti Dahayu, Putri Elsie Erman Taer Fitra Perdana Haryanti, Rismadani Husna, Ropiqotul Ismail, Noor Maizura Ismaliyah, Dhea ISRAWATI HARAHAP Iwantono Iwan Barnawi karnila ila sukma Kusmawati, Intan Laras Sita Widara Lega Putri Utami Leli Nurhamiyah Lubis, Viviana Na Duma, Tulus Neneng Fitrya Noni Febriani Noni Febriani Noni Febriani Noni Febriani Noni Febriani, Noni Nopripa Herlina Novia Gesriantuti Nur Azizah Nurhamiyah, Leli Piza Piza Piza, Piza Rachmawati Rachmawati Rahmadani, Nofia Reka Nuansa Fitri Reka Nuansa Fitri Rezki, Yona Purnama Rismadani Haryanti Romi Fadli Syahputra Rusmi, - Saktioto Saktioto Sasmita Sasmita Shabri Putra Wirman Sri Fitria Retnawaty Sri Mulyani Suryani, Yola Syahputra, Romi Tri Adelia Viviana Lubis Viviana Lubis wirdatul jannah WULANDARI Wulandari, Surya Yana, Debi Yani, Adila Fitri Yulia Fitri