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All Journal Jurnal Ilmu Dasar Jurnal Rekayasa Material, Manufaktur & Energi Kreator Journal of Energy, Material, and Instrumentation Technology Indonesian Journal of Chemical Studies (Indones. J. Chem. Stud.) International Journal of Applied Mathematics, Sciences, and Technology for National Defense Jurnal Pengabdian Masyarakat
Murniati, Riri
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Aerospace Engineering Arts Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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Penggunaan Cairan Magnetorheologi untuk Meningkatkan Kinerja Body Armor Awalia Yasin, Nurin Krisfina; Aritonang, Sovian; Murniati, Riri
Rekayasa Material, Manufaktur dan Energi Vol 7, No 1: Januari 2024
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v7i1.17306

Abstract

In this journal, we will explain the use of Magnetorheological fluid (MRF) in body armor. The use of MRF material was chosen because its properties can be adjusted using external magnetic forces. The durability of the material structure will be tested using a 9 mm projectile and will be tested using a puncture. In tests carried out with projectiles, the MRF structure will experience a reduction in depth. Testing using a puncture will change the MRF structure to deform by 30% of the normal structure. The application of MRF to kevlar can increase energy absorption and can reduce the effects of bullet impacts. These results show quite good results compared to using other materials in making Kevlar. Apart from that, several advantages of MRFs from graphene in making body armor are also explained. This advantage was obtained from testing the mechanical properties of graphene against several other materials.
Dynamic Mechanical Analysis of Natural Rubber Reinforced Nanosilica Compounds in Industrial Damper Molding Machines MURNIATI, RIRI
Kreator Vol. 10 No. 2 (2023): Kreator
Publisher : P3M Politeknik Negeri Media Kreatif

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46961/kreator.v10i2.1057

Abstract

INOVASI KREATIF PERANCANGAN MESIN PENCACAH BULU UNGGAS GUNA MENINGKATKAN KEMANDIRIAN EKONOMI PETERNAK AYAM DI MEGAMENDUNG KABUPATEN BOGOR Murniati, Riri
Jurnal Pengabdian Kepada Masyarakat Vol. 3 No. 2 (2024): Januari
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat Politeknik Negeri Media Kreatif

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46961/jpk.v3i2.994

Abstract

Abstrak: Bulu unggas yang diubah melalui suatu proses pengolahan dapat dimanfaatkan menjadi pupuk organik, pakan ternak, dan plastik ramah lingkungan. Mesin yang banyak digunakan untuk mencacah bulu unggas saat ini masih memiliki beberapa kekurangan diantaranya hasil cacahan yang masih kasar, memiliki bobot yang besar, kemampuan putaran mesin masih lambat dan aromanya mencemari udara. Tujuan kegiatan ini adalah mengembangkan mesin pencacah bulu unggas untuk dapat diimplementasikan dan diserahkan ke mitra penerima manfaat agar dapat menghasilkan daya guna bagi bagi industri terkait. Kami memberikan solusi dengan merancang alat pencacah bulu unggas yang mampu bekerja secara efektif dan efisien sehingga nantinya dapat dimanfaatkan pada produk industri kreatif. Kegiatan pengabdian ini berkonsentrasi pada perancangan alat yang inovatif agar bisa dilanjutkan tahap pembuatan alat dan diserahkan pada calon pengguna salah satu peternakan ayam di daerah Megamendung Kabupaten Bogor. Tujuan kegiatan ini bisa memberikan dampak baik bagi lingkungan dengan tersalurkannya limbah bulu unggas secara tepat, desain produk ini dapat diimplementasikan dan prototipe bisa diberdayakankan ke mitra penerima manfaat dan dapat menghasilkan daya guna bagi banyak pihak, terutama peternak dan Rumah Pemotongan Ayam.Kata Kunci: Bulu unggas; mesin pencacah; peternak ayam; inovasi rancangan.Abstract:  Utilization of poultry feathers through processing to be converted into organic fertilizer, animal feed, and environmentally friendly plastic. The machine that is widely used for chopping poultry feathers still has some drawbacks, including the chopped results are still rough, has a large weight, the engine speed is still slow and the aroma pollutes the air. We provide a solution by designing a poultry feather chopper that is able to work effectively and efficiently so that later it can be used in creative industrial products. This service activity concentrates on designing innovative tools so that they can be continued at the manufacturing stage and handed over to potential users of one of the chicken farms in the Megamendung area, Bogor Regency. The aim of this activity is to have a good impact on the environment by channeling poultry feather waste properly, the product design can be implemented and prototypes can give benefits for many parties, especially breeders and chicken slaughterhouses.Keywords: poultry feather; chopping machines; design innovation;
Design Smart Installation Household Electricity Using Solar Panels 600 Watts on Grid Capacity Nasution, Rahmatsyah Handayani Ramadhan; Salsabilla, Annisa; Ridho’i, M. Fachmi; Murniati, Riri
Jurnal ILMU DASAR Vol 25 No 1 (2024)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v25i1.43717

Abstract

Energy security plays an important role, especially in the modern and digital era which continues to increase in use. The availability of renewable energy sources is very abundant in tropical countries of Indonesia, especially solar energy sources that can be used to meet electricity needs on a household scale without worrying about limitations and pollution. This study aims to design electrical installations using solar panels with an autonomous drive system following Arduino uno-based sunlight with a capacity of 600 watts on-grid to reduce the cost burden of PLN and reduce air pollution. The addition of Arduino uno autonomous devices plays a role in increasing the efficiency of solar radiation received thereby increasing the output power of the installation. The result of this study is the design of a power plant installation with a solar cell with a capacity of 600 watts with 13 50-watt monocrystalline PV solar modules with supporting components, such as a 1000-watt inverter, and an efficiency device in the form of an Arduino uno-based autonomous drive system. This research produces data on the benefits obtained by using this tool amounting to Rp. 12.500 / month for 20 years of efficiency in using solar panels.
Eksistensi Material Komposit Guna Menunjang Alutsista Pertahanan Negara Hutagalung, Ananda Yessica Margaretha; Aritonang, Sovian; Murniati, Riri
Rekayasa Material, Manufaktur dan Energi Vol 8, No 1: Januari 2025
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v8i1.17378

Abstract

Composite materials have become an important aspect in the development of national defense equipment. In an effort to improve the performance and effectiveness of the main weapons system (alutsista), the application of composite materials has become a significant solution. This research aims to review the existence of composite materials in supporting national defense, focusing on the benefits, characteristics and important role in achieving excellence in defense equipment. The advantages of composite materials include strength, hardness, corrosion resistance, and lighter weight than traditional metals. With these characteristics, composite materials have had a positive impact on the development of national defense equipment. In a world that continues to change and becomes increasingly complex, the existence of composite materials in national defense equipment is a strategic step to maintain and increase military deterrence and effectiveness. This research will explain the role of composite materials in achieving this goal, as well as review the latest developments in the use of composite materials in the defense sector.
Synthesis and Characterization of Titanium Dioxide/Graphene Nanoplatelets Nanocomposites via Planetary Ball Milling for Military Radar Absorbing Materials Amalia, Gita Resty; Hardiansyah, Andri; Rasendriya, Anselmo Bima; Rahmadtullah, Ismail; Setiono, Andi; Murniati, Riri
Indonesian Journal of Chemical Studies Vol. 4 No. 1 (2025): Indones. J. Chem. Stud., June 2025
Publisher : Indonesian Scholar Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55749/ijcs.v4i1.67

Abstract

Stealth technology is widely used in the military field to avoid enemy detection. Consequently, there has been a significant surge in research related to radar-absorbing materials (RAMs). Titanium dioxide (TiO2) and graphene nanoplatelets (GNPs) are promising materials for developing RAMs. Combining TiO2 as a semiconductor with GNPs as a conductive material could increase the ability to absorb microwaves through a more effective energy dissipation mechanism. In our study, TiO2 and GNPs were fabricated using the planetary ball milling method. The structure and morphology of the resulting nanocomposites were evaluated using Field Emission Scanning Electron Microscopy with Energy Dispersive Spectroscopy with Energy Dispersive Spectroscopy (FE-SEM EDS) and X-ray Diffraction (XRD). FE-SEM observations showed that TiO2 nanoparticles were attached to the surface of layered GNPs. XRD analysis showed a decrease in the peak intensity of the TiO2/GNP nanocomposites compared to pure TiO2 due to the addition of carbon elements. The performance of RAMs was evaluated using a Vector Network Analyzer (VNA) in the X-band (8-12 GHz) range with a 3-mm thickness. The VNA analysis indicated that the TiO2/GNP nanocomposites exhibited the optimal reflection loss (RL) of -30.72 dB at a frequency of 8.42 GHz, accompanied by a through power of 99.91%. Consequently, TiO2/GNP nanocomposites demonstrated promising potential as a military RAM.
Co-Authors Ahmada, Mufti Labib Alwan, Mochamad Ibnu Amalia, Gita Resty Andi Setiono Aritonang, Sovian Awalia Yasin, Nurin Krisfina Blanchard, Ramandasoavina Cahayaputri, Olivia Thresnayu Fauziah, Anis Khoirun Nisa Nur Hardiansyah, Andri Hertanto, Theofillus Lisa Okta Hirawan, Agung Hutagalung, Ananda Yessica Margaretha Kusumadjati, Adhi Likitaporn, Chutiwat Napitupulu, Jofim Yordaniel Nasution, Rahmatsyah Nasution, Rahmatsyah Handayani Ramadhan Nasution, Salsabila Fauziah Dhuha Prayogo, Dimas Rahmadtullah, Ismail Rasendriya, Anselmo Rasendriya, Anselmo Bima Ridho’i, M. Fachmi Salsabilla, Annisa Shafwan, Almas Tri Oktaviana, Aditya Yamin, Muthi'ah Alfiyah