Article Per Year (5 Year)
p-Index From 2020 - 2025
1.116
P-Index
This Author published in this journals
All Journal Wikrama Parahita : Jurnal Pengabdian Masyarakat Jurnal Mekanik Terapan Journal of Applied Mechanical Technology (JAMET) Jurnal Polimesin Jurnal Sains Materi Indonesia Recent in Engineering Science and Technology
Garjati, Vina Nanda
Unknown Affiliation
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences

Published : 6 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 6 Documents
Search

 1 
Studi Pengaruh Penambahan 5wt.% dan 10wt.% Serat Pelepah Salak pada Manufaktur Komposit Epoxy berpenguat Serat Kevlar dan Serat Karbon dengan Metode Vacuum Assisted Resin Transfer Molding (VARTM) untuk Aplikasi Rompi Tahan Peluru Garjati, Vina Nanda; Rizkia, V.; Anggraeni, N. A.; Muslimin
Journal of Applied Mechanical Technology Vol 2 No 2 (2023): Journal of Applied Mechanical Technology (JAMET)
Publisher : Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31884/jamet.v2i2.32

Abstract

Rompi tahan peluru sebagai perlindungan diri personel militer umumnya berbahan dasar komposit berpenguat serat sintetis. Komposit berpenguat serat kevlar dan karbon telah mampu menahan laju penetrasi peluru dan memiliki karakteristik ringan, namun biaya produksi dengan serat sintetis tersebut relatif mahal. Penggunaan material substitusi dari serat alam sangat potensial, dikarenakan jumlah serat alam yang berlimpah, ringan, dan harganya yang relatif murah. Salah satu serat alam yang potensial adalah serat dari pelepah salak. Penelitian ini berfokus pada pengaruh penambahan serat pelepah salak terhadap karakteristik komposit serat Kevlar dan serat karbon, dengan filler SiC dan Al2O3. Pembuatan komposit ini dilakukan dengan metode Vacuum Assisted Resin Transfer Molding (VARTM). Terdapat 4 variasi fraksi volume serat dan filler sebagai penguat yang ditambahkan pada komposit ini. Dari hasil pengamatan dengan SEM didapatkan hasil matriks dan penguat sudah terikat dengan baik. Hasil uji balistik menunjukan seluruh variasi sampel uji dapat menahan laju peluru sehingga tidak tembus. Hasil uji mekanik menunjukkan saat ini penambahan serat pelepah salak belum secara signifikan meningkatkan sifat mekanis komposit tersebut
The Effect of 5wt.% and 10wt.% Salacca Frond Fiber Addition on Kevlar and Carbon Fiber Reinforced Epoxy using Vacuum Assisted Resin Transfer Molding (VARTM) Method for Bulletproof Vest Application Garjati, Vina Nanda; Vika Rizkia; Aggraeni, Nur Agnes; Muslimin
Recent in Engineering Science and Technology Vol. 1 No. 03 (2023): RiESTech Volume 01 No. 03 Years 2023
Publisher : MBI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59511/riestech.v1i03.27

Abstract

Bulletproof vests as self-protection for military personnel are generally made from synthetic fiber-reinforced composites. Kevlar and carbon fiber reinforced composites have been able to withstand bullet penetration rates and have lightweight characteristics, but production costs with synthetic fibers are relatively expensive. The use of substitute materials from natural fiber is very potential, due to the abundance of natural fiber, lightweight, and relatively cheap price. One of the potential natural fibers is fiber from the salacca midrib. This study focused on the effect of adding salacca frond fiber on the composite characteristics of Kevlar fiber and carbon fiber, with SiC and Al2O3 fillers. The manufacture of this composite is carried out by the Vacuum Assisted Resin Transfer Molding (VARTM) method. There are 4 variations of fiber volume fractions and fillers as reinforcement added to this composite. From the results of observations with SEM, the results of the matrix and reinforcement are well bound. The ballistic test results show that all variations of test samples can withstand the bullet rate so that it does not penetrate. The results of mechanical tests show that currently the addition of salacca frond fiber has not significantly improved the mechanical properties of the composite
Implementasi Objek Deteksi untuk Sistem Inspeksi Visual pada Penanda Volume Botol Susu Bayi Sausanina, Aisyah; Prasetya, Sonki; Garjati, Vina Nanda
Jurnal Mekanik Terapan Vol 5 No 1 (2024): April 2024
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/jmt.v5i1.6088

Abstract

Botol bayi memiliki peranan penting dalam memberikan susu formula atau ASI kepada bayi karena kemudahan dan efisiensi penggunaannya. Penandaan atau penakaran volume pada botol merupakan hal krusial dalam produksi karena dapat menyebabkan campuran susu formula yang tidak sesuai berpotensi membahayakan bayi. Penelitian ini memiliki tujuan untuk mengembangkan sistem inspeksi visual berbasis machine vision untuk membantu proses pengujian penanda volume untuk memastikan botol susu bayi memenuhi standar sehingga dapat dijual. Untuk mengembangkan sistemnya digunakan model objek deteksi YOLOv4 Tiny. Hasil penelitian didapatkan bahwa sistem mempunyai nilai tingkat pengenalan sebesar 96,86% dari 5 kali percobaan pada 14 botol sampel. Kemudian akurasi sistem dalam mengidentifikasikan volume sesuai batas toleransi sebesar 92,57%, error deteksi terdapat pada volume 0 – 50 ml dan 50 – 100 ml.
Development and Application of Eco Enzyme for Household Organic Waste Management in Kampung Lio Area, Depok Nufus, Tatun Hayatun; Saidatuningtyas, Ifa; Arnanda, Rachmat; Ardhan, Dhea Tisane; Khoirunnisa, Ratna; Garjati, Vina Nanda
Wikrama Parahita : Jurnal Pengabdian Masyarakat Vol. 9 No. 1 (2025): May 2025
Publisher : Universitas Serang Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30656/jpmwp.v9i1.9601

Abstract

Organic food waste accounts for the largest category of waste, comprising 40.8% according to data from the National Waste Management Information System (SIPSN). The high volume of this waste encourages alternatives for utilizing and processing household waste. One alternative method is producing an eco-enzyme, a liquid resulting from the fermentation of leftover fruits and vegetables. Its numerous uses and benefits have led to eco-enzyme development as an alternative method for processing household organic waste. To introduce this method, a Community Service (PKM) activity themed 'Development and Application of Eco Enzyme for Household Organic Waste Management' was conducted in the Kampung Lio area, Depok. This activity aims to enable the residents of Kampung Lio, Depok, to process their organic waste into eco enzyme and utilize it for various daily needs, such as floor cleaner, vegetable and fruit wash, insect repellent, plant fertilizer, disinfectant, laundry soap, bath soap, shampoo, toilet cleaner, and many other uses. After this activity, all participants started to implement their knowledge by processing their household organic waste into an eco enzyme because it has many benefits and simultaneously processed household waste.
The Influence of Anodizing Electrolyte Concentration on Ni-P Deposition on Anodic Aluminum Oxide (AAO) Rizkia, Vika; Susanto, Iwan; Belyamin; Garjati, Vina Nanda; Hapsari, Ade Utami; Raharjo, Jarot; Damisih; Pravitasari, Retna Deca
Jurnal Sains Materi Indonesia Vol. 27 No. 1 (2025): Jurnal Sains dan Materi Indonesia
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jsmi.2025.9708

Abstract

Aluminum alloys suffer from deficiencies in surface performance due to insufficient resistance to corrosion and mechanical qualities in harsh environments. Therefore, it is crucial to apply a protective surface modification during the manufacturing process of the aluminum component. The electroless deposited Ni-P shows great potential as a protective coating due to its simple manufacturing process and outstanding performance. This study investigates the effect of oxalic acid concentration in the anodizing process on electroless Ni-P coating. In this study, Anodic Aluminum Oxide (AAO) is formed by an anodizing process on 0.3,0.5, and 0.7 oxalic acids prior to Ni-P electroless deposition. The resulting Ni-P layer has a nodular-like morphology with a size in the order of 0.5 m or less. Moreover, the AAO surface is covered by a thin and tightly formed layer of nickel particles. The EDX analysis shows the oxygen percentage falls by up to 70% after Ni deposition in all anodizing parameters, as compared to the anodized specimens alone. In addition, the nickel content gradually decreases as the concentration of oxalic acid increases from 0.3 M to 0.7 M.
Analysis of the effect of welding sequence and speed on the distortion of ASTM A36 joints by MIG method Purnama, Dewin; Rizkia, Vika; Garjati, Vina Nanda
Jurnal Polimesin Vol 21, No 5 (2023): October
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v21i5.4134

Abstract

The welding process with the Metal Inert Gas (MIG) method often produces distortions that are detrimental to product quality, one of the factors that affect the characteristics of the welding results is heat input. The heat input provided in the welding process is influenced by arc current, arc voltage, and welding speed, besides that the welding sequence can also affect the distortion of thin plates due to welding on materials such as ASTM A36 plates. The welding process uses welding wire/electrode type AWS ER 70S-6 with a diameter of 1.0 mm, the welding parameters applied are: voltage of 22 Volts, current of 150 Amperes, DC + Current type (DCEP), the shielding gas used is 100% Argon with a flow rate of 15 liters per minute, horizontal welding position (1G), the amount of heat input is differentiated by changing the welding speed and the welding sequence used is the stepping stone method. The results of the study using ANOVA indicate that welding distortion increases with an increase in input heat, the repetition of welding sequences leads to greater distortion due to thermal stress, and the welding sequence and input heat have an influence of 80.4% in reducing distortion.
Co-Authors Aggraeni, Nur Agnes Anggraeni, N. A. Ardhan, Dhea Tisane Arnanda, Rachmat Belyamin Damisih Dewin Purnama Hapsari, Ade Utami Iwan Susanto Jarot Raharjo MUSLIMIN Pravitasari, Retna Deca RATNA KHOIRUNNISA Rizkia, V. Saidatuningtyas, Ifa Sausanina, Aisyah Sonki Prasetya Tatun Hayatun Nufus Vika Rizkia