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All Journal Jurnal Dinamis SEMIRATA 2015 Journal of Aceh Physics Society Jurnal Ikatan Alumni Fisika Universitas Negeri Medan Science and Technology Indonesia Abdimas Talenta : Jurnal Pengabdian Kepada Masyarakat Indonesian Journal of Chemistry Journal of Technomaterial Physics Jurnal Natural
Timbangen Sembiring
Physics Department, FMIPA Universitas Sumatera Utara – Medan Indonesia
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Environmental Science Immunology & microbiology Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Neuroscience Physics Social Sciences Other

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Journal : Journal of Technomaterial Physics

 1 
Effect of Mass Addition on Physical Properties and Mechanical Properties of Agave Sisalana Fiber Composites - Epoxy Sinaga, Antonius Sutanto; Sembiring, Timbangen
Journal of Technomaterial Physics Vol. 4 No. 1 (2022): Journal of Technomaterial Physics
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jotp.v4i1.7082

Abstract

Research on the effect of the addition of Agave Sisalana fiber mass on physical properties and mechanical properties in sisal-epoxy fiber composites has been conducted as an alternative material for composite materials. Agave Sisalana fiber was taken from Sumber Agung Village of Rejo Stage District of Blitar Regency, East Java. Agave Sisalana fiber as a filler varies the composition of fiber mass 0 g, 2 g, 4 g, 6 g, and 8 g. The results of testing the physical and mechanical properties of Agave Sisalana fiber composites produce a density value of 1.064 g/cm3 - 1.335 g/cm3, water absorption 1.59% - 2.62%, porosity 1.7% - 3.5%, strong bending 54.542 MPa - 86.412 MPa, strong impact 29.92 kJ/m2 – 98.32 kJ/m2, and strong tensile 1.983 MPa – 12.368 MPa. The physical and mechanical properties testing results have met JIS A 5905:2003 Standards, namely strong bending >32 MPa, the density of 0.3-1.3 g/cm3, and water content < 25%. Agave Sisalana fiber composites with epoxy resin can be applied to car bumpers.
Manufacture and Characterization of Pandan Wangi (Pandanus amaryllifolius Roxb) Fiber-Based Composite Board with Epoxy Resin Sembiring, Timbangen
Journal of Technomaterial Physics Vol. 2 No. 1 (2020): Journal of Technomaterial Physics
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jotp.v2i1.5200

Abstract

The manufacture and characterization of pandan wangi fiber-based compositeboards with epoxy resin using random fiber orientation method, fiber length 4 cm, withfiber composition in grams (0, 0.1, 0.2, 0.3, 0.4, 0.5), mechanical and physical testing hasbeen carried out. The results obtained a tensile strength value of 52.26 MPa, flexuralstrength 49.74 MPa, impact strength 30.6 kJ.mm-2, density 1.07 g.cm-3, and moisturecontent 2.05%. The results showed that the mechanical and physical properties that meetthe JIS A5905: 2003 standard are tensile strength > 0.4 MPa, bending strength > 32 MPa,density 0.3-1.3 g.cm-3, and moisture content 5-13 %. Therefore, pandan wangi fibercomposite with epoxy resin can be applied to car bumpers.
Manufacture and Characterization of Supercapacitance Properties of Robusta Coffee Shell-Based Carbon Electrodes Hulu, Frida Margareth; Sembiring, Timbangen
Journal of Technomaterial Physics Vol. 5 No. 1 (2023): Journal of Technomaterial Physics
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jotp.v5i1.10004

Abstract

Supercapacitors, which are able to store large amounts of energy, are a major requirement in energy utilization. In this study, carbon electrodes were produced from robusta coffee shells. The carbon was activated with 0.5 M, 0.7 M, and 3 M of KOH. The results showed that the higher the concentration, the larger and more regular the pores on the carbon and the larger the size. Carbon is produced in an impure state. The specific capacitances produced with 0.5 M, 0.7 M, and 3 M KOH are 0.28 Fg-1, 0.11 Fg-1, and 0.10 Fg-1.
Analysis and Characterization of Fe3O4/Silica Composite from Rice Husk Ash Susilawati, Susilawati; Lubis, Hariyati; Sembiring, Timbangen; Yanti, Jeddah; Pardede, Syahrani Nabilla; Napitupulu, Agnes Federova
Journal of Technomaterial Physics Vol. 6 No. 1 (2024): Journal of Technomaterial Physics
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jotp.v6i1.15975

Abstract

In this investigation, Fe3O4/Silica composites were synthesized from rice husk ash utilizing the coprecipitation technique, aiming to elucidate the influence of variedheating temperatures on the surface morphology and elemental composition of the composites. Comprehensive characterizations were conducted employing FourierTransform Infrared (FTIR) Spectroscopy, X-ray Diffraction (XRD), and Scanning Electron Microscopy (SEM). These analyses unveiled a heterogeneous distributionof Fe3O4 nanoparticles and affirmed the amorphous characteristic of the silica constituent, with the XRD results prominently displaying a broad peak at approximately 2θ = 38°, signifying the amorphous nature. Despite the alterations in heating temperatures, SEM observations indicated a negligible effect on the nanoparticles' surface morphology, whereas notable variations were discerned intheir elemental composition. The outcomes of this study provide insightful contributions to the understanding of the structural properties of Fe3O4/Silica composites, suggesting avenues for refining synthesis methodologies for enhanced environmental and technological utilization.
Co-Authors Achmad Maulana Soehada Sebayang Agung Imaduddin Anggito P Tetuko Anggito P. Tetuko Anggito P. Tetuko, Anggito P. Awan Pelawi Ayu Wahyuni Batubara Candra Kurniawan Cindy Al Kindi Devi Yolanda Simangunsong Eko Arief Setiadi Eko Arief Setiadi Eko Arief Setiadi, Eko Arief Eko Pudjadi, Eko Erna Frida Eva Purwanti Ferry Rahmat A. Bukit Fitri Handayani Fynnisa Zebua Guk-Guk, Herwati Permata Indah Raja Hamid, Muhammadin Hariyati Lubis, Hariyati Herty Afrina Sianturi Herty Afrina Sianturi Hulu, Frida Margareth Hussain, Muhammad Khalid Ivo Andika Hasugian Jeddah Yanti Junedi Ginting M Zidan Davy Marhaposan Situmorang Marhaposan Situmorang Marhaposan Situmorang Marhaposan Situmorang Maria Derani Ester Vania Situngkir Martha Rianna Martha Rianna Martha Rianna Martinez Lumbantobing Masno Ginting Mester Sitepu, Mester Moraidah Hasanah Motlan . Muhammad Syafii Muhammadin Hamid Napitupulu, Agnes Federova Nimpan Bangun Pardede, Syahrani Nabilla Perdamean Sebayang Perdamean Sebayang Perdamean Sebayang Pius Sebleku Rahmadsyah Rahmadsyah Rita Juliani Sianturi, Herty Afrina Silviana Simbolon Simamora, Berto Simamora, Widya Simatupang, Robin Sinaga, Antonius Sutanto Sitorus, Kurnia Jesiska Sitorus, Meida Susilawati, Susilawati Syahrul Humaidi, Syahrul Tarigan, Kerista Tua Raja Simbolon Wina Rahmadani Rangkuti Yoga Pratama Zuriah Sitorus