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I Gusti Ayu Arwati
Universitas Mercu Buana
Religion Aerospace Engineering Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Social Sciences Other

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Community Service at Imam Syafi'i Islamic Boarding School - Panancangan- Cipocok Jaya- Serang City In The Implementation of Waste Processing Machinery & Digitalization of Accounting Setiyawati, Hari; Arwati, I Gusti Ayu; Putra, Yananto Mihadi; Agustin, Andhika Permana; Sidik, Yusuf Samil
Journal of Community Service Vol 7 No 1 (2025): JCS, June 2025
Publisher : Ikatan Dosen Menulis

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56670/jcs.v7i1.250

Abstract

The partner in this community service is the Imam Syafi'i Islamic Boarding School which is an Islamic educational institution located on Jl. Dishud / Fire Department, Km. 02, Panancangan Village, Cipocok Jaya District, Regency. Serang, Banten which is involved in the field of formal and non-formal Islamic education. Along with its development, the Imam Syafi'i Islamic boarding school continues to improve facilities for its students. And as students continue to increase, the daily food requirements are certainly quite large. This has an impact on increasing the amount of waste produced from kitchens or from school areas, where it would be very beneficial if this waste was recycled into useful goods or processed into fertilizer that can be used by oneself or sold to the community to increase income. The problems experienced by partners are: a). The partner in this community service is the Imam Syafi'i Islamic Boarding School which is an Islamic educational institution located on Jl. Dishud / Fire Department, Km. 02, Panancangan Village, Cipocok Jaya District, Regency. Serang, Banten which is involved in the field of formal and non-formal Islamic education. Along with its development, the Imam Syafi'i Islamic boarding school continues to improve facilities for its students. And as students continue to increase, the daily food requirements are certainly quite large. This has an impact on increasing the amount of waste produced from kitchens or from school areas, where it would be very beneficial if this waste was recycled into useful goods or processed into fertilizer that can be used by oneself or sold to the community to increase income. The problems experienced by partners are: a) Produce liquid fertilizer, b) Produce recycled products that are ready to use, c) Availability of an accounting application with features for SPP and cottage business units, namely Zahir Accounting. The targeted output is the Sinta Indexed National Scientific Journal/international journal, Articles in the mass media /print/electronic, Activity Videos, Increasing understanding and skills of boarding school administrators, students and ustadz and output of IPR (Creation Rights). Until now, the output that has been achieved is video. PKM activities have been implemented starting August 7 2024. All activities as targeted have been achieved 100%. To ensure the success of the program, evaluation will be carried out at each stage of program development. To support the success of this program, it will continue to be monitored and facilitated so that it can continue to be implemented consistently and developed according to needs.
Review: Optimizing Plastic Injection Processes for Enhanced Quality and Sustainable Manufacturing Lase, Asaeli Tongoni; Arwati, I Gusti Ayu
International Journal of Innovation in Mechanical Engineering and Advanced Materials Vol 7, No 1 (2025)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/ijimeam.v7i1.31721

Abstract

In the automotive world, plastic products are components that cannot be separated. Almost all automotive products use plastic because it is easy to produce, and the price is relatively cheap compared to other materials. For applications such as covers, the demand on plastic surface quality are higher than for different uses. Therefore, a lot of costs are incurred to achieve this quality. However, ongoing efforts have decreased the time and expense of developing plastic molds. Many researchers have conducted studies to improve the quality of these products. This review consolidates several research articles on optimizing plastic injection processes to reduce defects and improve product quality. Techniques such as Taguchi Method, Response Surface Methodology (RSM), Artificial Neural Networks (ANN), and Finite Element Method (FEM) were evaluated in this research. This review highlights the importance of process parameters such as melt temperature, injection pressure, and cooling time, as well as the role of digital simulation in designing efficient and sustainable molds. The results of the study show that in several studies, defects often occur in the product without carrying out the optimization process. Still, the Taguchi and ANOVA methods can reduce the weld line and sink after optimizing the process parameters, such as melting temperature, injection pressure, cooling time, and injection speed. Mark up to 30%. These findings highlight the potential of these techniques to significantly improve product quality and support more sustainable manufacturing practices in the plastic injection molding industry.
Use of Hibiscus rosa-sinensis as a Green Corrosion Inhibitor for Valve Materials in RO Water Pudjiwati, Sri; Sanusi, Yasa; Arwati, I Gusti Ayu
International Journal of Innovation in Mechanical Engineering and Advanced Materials Vol 7, No 2 (2025)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/ijimeam.v7i2.32806

Abstract

Valves are mechanical devices that regulate the flow of oil and gas fluids and are typically constructed from materials that are heat-resistant, corrosion-resistant, and capable of withstanding high pressure. However, observations from valve manufacturing companies in the Banten area have shown that valve components made from medium carbon steel ASTM A105N are susceptible to corrosion during hydrotesting, particularly when using reverse osmosis (RO) water as the testing medium. This corrosion can degrade product quality before delivery to customers. To address this issue, this study investigates the use of Hibiscus rosa-sinensis as a green corrosion inhibitor. The objective of this research is to evaluate the corrosion rate, inhibitor efficiency, and surface morphology of ASTM A105N valve materials using Hibiscus rosa-sinensis in RO water media, with varying inhibitor concentrations and immersion durations. The electrochemical methods used include Potentiodynamic Polarization, Electrochemical Impedance Spectroscopy (EIS), Chronoamperometry, and Scanning Electron Microscopy (SEM). Results from the corrosion rate tests indicated that the highest inhibitor efficiency—59.04%—was achieved at 24 hours of immersion with a 2 g inhibitor concentration. This condition also yielded the lowest corrosion rate of 1.2231 × 10⁻² mm/year and the lowest corrosion current (Icorr) of 3.2601 × 10⁻⁶ A/cm². Chronoamperometry testing confirmed these findings with the lowest electric charge value of 0.0125 C. SEM analysis further revealed a more uniform and homogeneous protective coating on the metal surface under these conditions. Based on these results, Hibiscus rosa-sinensis demonstrates promising performance as a green corrosion inhibitor and is recommended as an additive in RO water for valve hydrotesting. This study highlights the potential of environmentally friendly and cost-effective inhibitors in reducing corrosion risk in valve materials.
Effect of Intake Manifold Porting and Polishing and Throttle Body Venturi Diameter Modification on Motorcycle Performance Anbia, Gun Gun; Arwati, I Gusti Ayu
Jurnal Teknik Mesin (Journal Of Mechanical Engineering) Vol 13, No 2 (2024)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/jtm.v13i2.27416

Abstract

This study aims to investigate the effect of intake manifold and throttle body modifications on the performance of a Yamaha Mio M3 125cc motorcycle engine. A two-level factorial experimental design with two factors was employed: intake manifold diameter (27 mm and 30 mm) and throttle body diameter (26 mm and 28 mm). Data were collected using a dyno test and analyzed using statistical methods. The results revealed that intake manifold and throttle body modifications significantly influenced the performance of the Yamaha Mio M3 125cc motorcycle engine. The combination of a 27 mm intake manifold and a 28 mm throttle body produced the highest torque of 23.1 Nm at 2,058 RPM, while the combination of a 27 mm intake manifold and a 26 mm throttle body generated the highest power of 11.2 HP at 7,155 RPM. These modifications resulted in a 10.53% increase in torque and a 16.67% increase in power compared to the standard configuration. Modifying the intake manifold and throttle body can enhance the performance of the Yamaha Mio M3 125cc motorcycle engine. Keywords: Intake manifold modification, Throttle body modification, Engine performance, Yamaha Mio M3 125cc
STRENGTH ANALYSIS OF STEEL ROPE ON FREIGHT ELEVATOR WITH A HOIST LIFTING CAPACITY OF 3 TONS Risdiyan, Asep; Haftirman, Haftirman; Arwati, I Gusti Ayu
Jurnal Teknik Mesin (Journal Of Mechanical Engineering) Vol 13, No 2 (2024)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/jtm.v13i2.19053

Abstract

Steel rope has advantages over chains, but also has disadvantages. The advantage is that it is resistant to shock loads, if it breaks it shows a brittle sign on one of the wires (Houda Mouradi, 2018). The drawbacks are that they are not resistant to corrosion, are difficult to bend, can stretch or elongate, and tend to rotate (Aginaparru, 2018). In this study the analysis carried out was the process for the Salt Spray test to determine the effect of the corrosion rate on steel rope and the tensile test process aimed at determining the phase transformation, plasticity, creep, fatigue, to the fatigue point, as well as metallographic tests for changes in the properties mechanic. Loss or loss of weight on steel rope type 6 x Fi (29), diameter 13 from the salt spray test process, increased the corrosion rate from 0.21 mpy to 0.23 mpy. The greater the tensile force, the greater the tensile stress that occurs. And the greater the tensile force, the greater the elastic modulus that occurs from the elastic limit to the fatigue limit due to the magnitude of the tensile force that exceeds the limit. In metallographic testing using the ASTM 317 / ASTM E 407 method, it can be concluded that the steel rope has a modulus of elasticity, visible crack lines in the steel rope structure indicating that the steel rope has undergone an elastic process to the fatigue limit or fracture limit. Keywords: Salt Spray, wire, creep, fatigue 
Tinjauan Pengaruh Iklim Pantai Terhadap Laju Korosi Kerangka Kendaraan Dengan Variasi Perlakuan Hendranata, Deni; Arwati, I Gusti Ayu; Darmono, Bambang
RIGGS: Journal of Artificial Intelligence and Digital Business Vol. 4 No. 2 (2025): Mei - Juli
Publisher : Prodi Bisnis Digital Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/riggs.v4i2.1500

Abstract

Iklim tropis di daerah pantai dapat mempengaruhi ketahanan material baja untuk struktur kendaraan sepeda motor, karena iklim daerah pantai dapat mnimbulkan korosi pada material baja yang mana iklim lembab dapat meningkatkan tingkat korosi pada baja. Penelitian ini bertujuan untuk mengetahui laju korosi karena pengaruh iklim di daerah pantai terhadap ketahanan jenis baja yang digunakan pada struktur kerangka sepeda motor dengan perlakuan pemaparan langsung, bending, dan pengelasan. Metode yang digunakan dalam penelitian ini adalah dilakukan pengujian secara eksperimen yaitu metode weight loss and gravimetry. Hasil penelitian ini menunjukkan bahwa penggunaan baja dengan dimensi dan ketebalan tertentu serta pengelasan dengan berbagai proses menunjukkan tingkat korosi yang tinggi. Sedangkan pengujian laju korosi pada baja ASTM A36 setelah proses bending menunjukkan bahwa semakin lama waktu pencelupan, laju korosi semakin kecil. Penelitian ini juga menemukan bahwa laju korosi terbesar terjadi pada menit ke-30 saat menggunakan metode celup diam sebesar 156,46 mmpy dengan sudut bending 1800 . Pengelasan juga memiliki pengaruh terhadap laju korosi yang mana korosi pitting lebih dominan terjadi pada base metal dari pada welded metal. Perlakuan inhibitor dan pelapisan anti korosi diperlukan untuk mencegah korosi pada baja yang terpapar atmosfer iklim tropis di daerah pantai.
Socialization Of Waste To Energy Transformation: Innovation And Future Opportunities In Penang Island Ayu Arwati, I G.; Nurato , Nurato; Feriyanto, Dafit; Hidayat, Imam; Fitri , Muhammad; Pranoto, Hadi; Alva, Sagir; Ginting, Dianta; Ruhyat, Nanang; Noviyanto, Alvian
International Journal Of Community Service Vol. 5 No. 3 (2025): August 2025 (Indonesia - Rusia - Malaysia)
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijcs.v5i3.872

Abstract

Effective waste management is a major challenge in the modern era, especially with the increasing volume of waste produced by society. Transforming waste into energy offers an innovative solution that not only reduces environmental impact but also opens up economic and social opportunities. Through technologies such as biogas, incineration, pyrolysis, and gasification, waste can be converted into sustainable renewable energy sources. This socialization aims to increase public and stakeholder awareness of the importance of innovative waste management and its benefits for the environment and future economy.By understanding the technology, opportunities, and challenges that exist, it is hoped that the community and government can play an active role in supporting the mission towards more environmentally friendly waste management and reducing carbon emissions.
Natural Inhibitors for Corrosion Protection of 6061 Aluminum Alloy: A Review Witanta, Maulana; Arwati, I Gusti Ayu; Majlan, Edy Herianto
International Journal of Innovation in Mechanical Engineering and Advanced Materials Vol 7, No 3 (2025)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/ijimeam.v7i3.34713

Abstract

6061 aluminum alloys are widely used in automotive, marine, and aerospace industries, yet their high susceptibility to corrosion in acidic and chloride environments remains a challenge. Bio-based inhibitors from natural sources have emerged as sustainable alternatives to toxic synthetic chemicals. This review synthesizes findings from published studies on AA6061 alloys and composites, integrating evidence from Potentiodynamic Polarization (PDP), Electrochemical Impedance Spectroscopy (EIS), and Scanning Electron Microscopy (SEM). Cross-study evaluations show that inhibition efficiency depends on inhibitor type and mechanism. Reports indicate that Boswellia serrata provides only moderate protection (~70%) due to weak physiosorbed films that are unstable under flow, whereas Alocasia odora achieves higher efficiency (~94% in HCl) through chemisorption with cathodic inhibition. Aerva lanata demonstrates ~88% efficiency in chloride-based fiber-metal laminates via polyphenolic adsorption, while glutathione provides ~80% protection at 0.75 mM through multisite coordination. Pectin consistently achieves the highest efficiency (~95% in mild acidic media) by forming compact polymeric films that increase charge-transfer resistance and reduce double-layer capacitance. This synthesis indicates that chemisorption-based inhibitors (e.g., pectin, Alocasia) generally outperform physisorption-based systems (e.g., Boswellia) because they form stronger and more stable films. Reported studies highlight both advantages and limitations: natural inhibitors are effective and eco-friendly, but most evaluations remain short-term and laboratory-based. Key gaps include durability testing, advanced characterization (XPS, ToF-SIMS, Raman, AFM), galvanic effects in composites, and poor hydrodynamic stability of physisorption systems. Future work should explore hybrid strategies, synergistic multi-inhibitor approaches, and validation under real-sea conditions to enable scalable and industrially viable corrosion protection.
Introduction To The Types of Pollutants Included In Greenhouse Gases In The Context of Understanding And Addressing Climate Change In Penang, Malaysia Nurato, Nurato; Ayu Arwati, I G; Fitri, Muhammad
International Journal Of Community Service Vol. 5 No. 4 (2025): November 2025 ( Indonesia - Thailand - Malaysia - Timor Leste - Philippines )
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijcs.v5i4.912

Abstract

Climate change is a global challenge that requires a thorough understanding of greenhouse gas (GHG) pollutants. Gases such as carbon dioxide (CO₂), methane (CH₄), and nitrous oxide (N₂O) trap heat in the atmosphere, causing global warming with serious consequences such as extreme weather events and ecosystem disruption. The main sources of emissions come from the energy, industrial, agricultural, and land-use change sectors. This paper emphasizes that identifying the types of GHG pollutants and their characteristics is crucial for developing targeted mitigation strategies. These efforts, which include a transition to renewable energy, increased energy efficiency, and strong policy implementation, are expected to significantly reduce global emissions, stabilize the climate, and control the rate of warming.
Sustainable Corrosion Protection of Stainless Steel 316L in Marine Environment Using Electrophoretically Deposited Garlic Extract Green Inhibitor: Electrochemical and Surface Analysis Arwati, IG. Ayu; Ginting, Dianta; Feriyanto, Dafit; Golwa, Gian Villany; Yuliarty, Popi; Tarigan, Kontan; Damar, Stenlly; Khuzaimah; Mashadi, Mashadi
Science and Technology Indonesia Vol. 11 No. 2 (2026): April
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2026.11.2.447-456

Abstract

The increasing demand for sustainable and environmentally friendly corrosion inhibitors has driven research toward green alternatives to conventional toxic inhibitors. This study investigates the corrosion protection performance of garlic extract (Allium sativum) as an eco-friendly green inhibitor for stainless steel 316L in 3.5% NaCl marine environment. The inhibition efficiency was evaluated using electrochemical potentiodynamic polarization techniques, complemented by comprehensive surface characterization through scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDX), Fourier transform infrared (FTIR) spectroscopy, Raman spectroscopy, electrochemical impedance spectroscopy (EIS), and cyclic voltammetry analysis. Electrophoretic deposition (EPD) was employed to apply garlic extract concentrations of 8, 10, and 12 mL onto SS316L specimens. Results demonstrated significant corrosion rate reduction from 0.0082732 mmpy (unprotected specimen) to 0.0014547 mmpy with 12 mL garlic extract treatment, achieving maximum inhibition efficiency of 82%. EIS revealed substantial increase in charge transfer resistance (>170 kΩ), while electrochemical analysis demonstrated mixed-type inhibition behavior with reduced corrosion current densities. SEM-EDX confirmed the formation of protective Fe2+-allicin complex layers on the metal surface, while Raman spectroscopy showed substantial reduction in corrosion products (a-Fe2O3 and y-FeOOH) formation. Cyclic voltammetry demonstrated a five-order-of-magnitude reduction in diffusion rate, confirming exceptional barrier properties. The superior performance is attributed to the chemisorption of sulfur and oxygen-containing compounds in allicin molecules onto active steel sites, forming stable protective films. This green inhibitor demonstrates excellent potential for sustainable corrosion protection in marine and industrial applications, offering an environmentally benign alternative to synthetic inhibitors.
Co-Authors ADISTIN, Yulita Agustin, Andhika Permana Alfattah, Muhammad Alva, Sagir ANBIA, GUN GUN Bambang Darmono Dafit Feriyanto Damar, Stenlly Edy Herianto Majlan, Edy Herianto Endah Retno Wuryandari, Nur Erna Setiany Erna Sofriana Imaningsih Euis Nina Saparina Fadilah, Arif Fina, Fina Fitri , Muhammad Ginting, Dianta Golwa, Gian Villany Hadi Pranoto Haftirman, Haftirman Hari Setiyawati Hendranata, Deni Ibdal Satar Ifani, Febrina Imam Hidayat IMANINGSIH, Erna Soriana Indradewa, Rhian Izzati, T. KHUZAIMAH Lase, Asaeli Tongoni Lutfiana, Diana Maryani, Yeyen Mashadi Mashadi Muhamad Fitri Muhammad Edi Laksono Muhammad Fikri Muhammad Fitri, Muhammad N, Euis Nanang Ruhyat Nina Saparina Yuliani, Euis Noviyanto, Alvian NUGROHO, Yusuf Purwo Nur Endah Retno Wuryandari Nurato , Nurato Nurato Nurato, Nurato Pratiwi, Riri Pudjiwati, Sri Puji Rahayu Raden Mohamad Herdian Bhakti Risdiyan, Asep Romahadi, Dedik S., Wiwit Safira, Safira Sagir Alva Samsul Sianipar Sanusi, Yasa SARAGIH, Cindy Patricia Sawarni Hasibuan Setiawan, Arip Sidik, Yusuf Samil Sirait, Dedi Siti Choiriah Suharmadi Suharmadi Syahbana, Fikri Syamsul, Nurato Tarigan, Kontan Titia Izzati, Titia Tyas Wedhasari, Tyas Villany Golwa, Gian Wahyu Irwansyah Witanta, Maulana Wiwit Suprihatiningsih Yananto Mihadi Putra Yudhi Herliansyah Yuliarty, Popi Z. Arifin ZAKIYAH, Eneng Fitri