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All Journal Transmisi Rekayasa Mesin Bulletin of Chemical Reaction Engineering & Catalysis Erudio: Journal of Educational Innovation Journal of Mechanical Engineering Science and Technology Jurnal Karinov Jurnal Komunitas: Jurnal Pengabidian Kepada Masyarakat Jurnal Abdimas Prakasa Dakara Bulletin of Chemical Reaction Engineering & Catalysis

Avita Ayu Permanasari

Universitas Negeri Malang

Author-ID : 2739467

Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Economics, Econometrics & Finance Education Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Other

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Optimasi Desain Metal Gasket Tipis Bentuk New Corrugated Untuk Kebutuhan Tekanan Kerja Rendah Dengan Simulasi Komputer Permanasari, Avita Ayu; Choiron, Moch. Agus; Purnowidodo, Anindito
Jurnal Rekayasa Mesin Vol 4, No 3 (2013)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (561.714 KB)

Contact width and leakage had been used as the main parameter to optimize a new corrugated metal gasket for high working pressure. The leakage could be reduced as increasing the contact width. On the other hand, gaskets in piping for low pressure were used into distribution of water in the hotel. In this study, thin metal gasket is optimized by using simulation experiment. The design of experimentation (DOE) Taguchi method is used to analyze the effect of each parameter design and to predict optimal design of thin metal gasket. The L27 orthogonal array is concerned to design the experimental matrix for five factors with three levels. The five factors are thickness (t), pitch (p), over hang (OH), lip height (h), and radius convex (R). The observed value is denoted by using the slope of the curve of relationship between contact width and clamping load. The slope of curve is increased; it will be reduce the clamping load. The optimum design of thin metal gasket based on the results of each observed values is a model with thickness (t) = 0.3 mm, pitch (p) = 4 mm, over hang (OH) = 3 mm, lip height (h) = 0.4 mm, and radius convex (R) = 2.5 mm.Keywords: Contact width, leakage, Taguchi, optimum design

Rancang Bangun TTG I-Bite (IoT Basic Automatic Smart Feeder) untuk Meningkatkan Kapasitas Produksi Tambak Ikan Lele Sukarni Sukarni; Malik Abdurrachman; Ardianto Prasetiyo; Avita Ayu Permanasari; Poppy Puspitasari; Heru Suryanto
Jurnal KARINOV Vol 4, No 1 (2021): Januari
Publisher : Institute for Research and Community Service (LP2M), Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um045v4i1p%p

Pakan merupakan komponen terbesar dalam usaha budidaya ikan konsumsi. Pemberian pakan yang kurang baik berdampak pada meningkatnya Feed Conversion Ratio (FCR), menurunnya kualitas air, dan kematian ikan. Berdasarkan permasalahan yang dihadapi oleh mitra dan perkembangan teknologi saat ini, artikel hasil pengabdian masyarakat ini mengusulkan sistem Teknologi Tepat Guna I-Bite yang menggunakan IoT sehingga mempermudah dalam pengaplikasiannya. User dapat mengatur banyak pakan yang akan diberikan, durasi pemberian pakan, jarak area tebar, jadwal pemberian pakan sesuai dengan kebutuhan, serta siklus data pemberian pakan melalui email. Tujuan pengabdian masyarakat ini adalah untuk mengatasi kesulitan dalam pemberian jumlah pakan yang tepat pada area yang merata dengan jadwal yang telah ditentukan serta memberikan sosialisasi terkait cara pengoprasian, perakitan, dan pemasangan instrumen. Metode pelaksanaan pengabdian ini adalah dengan sosialisasi serta pengujian peforma instrumen. Hasil pengujian menunjukan bahwa instrumen dapat menebar pakan sejauh 14m dengan debit 4kg/menit pada sudut 110’. Berdasarkan hasil pengujian tersebut dapat disimpulkan bahwa I-Bite dapat menjadi solusi mitra dalam hal pemberian pakan dengan menggunakan instrumen yang diajukan dapat menjadi solusi terhadap permasalahan yang dialami mitra terutama mempermudah dalam pemberian pakan. Kata kunci—Teknologi, I-Bite, Internet of Things (IoT), pakan ikan, efisiensi, produksi AbstractFeed is the biggest component in the consumption of fish farming. Poor feeding results in increased Feed Conversion Ratio (FCR), decreased water quality, and fish mortality. Based on the problems faced by partners and current technological developments, this article on the results of community service proposes an Appropriate Technology I-Bite system that uses IoT to make it easier to apply. Users can set the amount of feed to be given, the duration of feeding, the distance of the stocking area, the feeding schedule according to the needs, and the data cycle of feeding via email. The purpose of this community service is to overcome difficulties in providing the right amount of feed in an even area with a predetermined schedule and provide socialization related to how to operate, assemble and install instruments. The method of implementing this service is by socializing and testing the performance of the instrument. The test results show that the instrument can spread the feed as far as 14m with a discharge of 4kg / minute at an angle of 110 '. From the results of these tests, it can be concluded that I-Bite can be a partner solution in terms of feeding using the proposed instruments which can be a solution to the problems experienced by partners, especially making it easier to feed.Keywords—Technology, I-Bite, Internet of Things (IoT), fish feed, efficiency, production

EVALUATION OF THE COURSE ON FINITE ELEMENT METHOD WITH ANSYS APPLICATION SOFTWARE FOR IMPROVING MECHANICAL ENGINEERING STUDENTS’ PROBLEM-SOLVING SKILLS Mochammad Agus Choiron; Avita Ayu Permanasari; Nafisah Arina Hidayati
Erudio Journal of Educational Innovation Vol 5, No 1 (2018): Erudio Journal of Educational Innovation
Publisher : Universitas Brawijaya

In the previous study, learning process by using relevant software with the course had been developed in the statistic course and mechanical drawing course. This study aimed at investigating the effectiveness of using ANSYS software as a tool to help students fulfil the objectives and competencies of Finite Element Method course. The questionnaire consisting of three simple questions to elicit information about lecturer and course evaluation, level of satisfaction and suggestions for course development. The 60 respondents were taken randomly from two Finite Element course classrooms. The evaluation result showed that 60% students could understand the Finite Element Method lesson better with the assistance of ANSYS, 26% said that there was no significant difference with the previous learning methods, 14 % stated that the method used in the previous learning process was better. Regarding sustaining the use of ANSYS application in the learning process, 89% students agreed to continue since they argued that it could improve their problem-solving skills as essential skills to succeed in the industrial job market.

Formula of Moulding Sand, Bentonite and Portland Cement toImprove The Quality of Al-Si Cast Alloy Andoko Andoko; Poppy Puspitasari; Avita Ayu Permanasari; Didin Zakaria Lubis
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 1, No 2 (2017)
Publisher : Universitas Negeri Malang

A binder is any material used to strengthen the bonding of moulding sand grains. The primary function of the binder is to hold the moulding sand and other materialstogether to produce high-quality casts. In this study, there were four binder compositions being tested, i.e. 5% bentonite + 5% Portland cement, 4% bentonite + 6% Portland cement, 6% bentonite + 4% Portland cement, and 7% bentonite + 3% Portland cement. Each specimen was measured for its compressive strength, shear strength, tensile strength and permeability. The highest compressive strength was obtained fromthe specimen composed of 6% bentonite+ 4% Portland cement. The highest shear strength was obtained from the moulding sand with 7% bentonite+ 3%Portland cement. The highest tensile strength was obtained fromthe specimen contained 5% bentonite+ 5% Portland cement. The specimen composed of 5% bentonite + 5% Portland cement had the lowest permeability of 131 ml/min, while that of 6% bentonite + 4% Portland cement had the highest permeability of 176 ml/min.

Properties of Brass under Different Pouring Temperatures in Sand Casting Process Poppy Puspitasari; Avita Ayu Permanasari; Andoko Andoko; Bayu Angga Pratama
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 1, No 2 (2017)
Publisher : Universitas Negeri Malang

This study aimed to determine the toughness of casts produced by the sand casting process at various temperatures against brass, and to investigate the structure contained in the cast madeusing abrass metal mould. This study was experimental research that observed the results of a treatment applied to a specimen group. This pre-experimental study usedthe one-shot case study model in which a group of samples was given treatment. The results showed that the specimen poured at 900°C exhibiteda microstructure consisting ofgood Cu-Zn content, while that at 700°Chad the least Cu content. It indicates that the higher the temperature used for metal casting (brass), the more brittle the cast. The toughness of the materialwas influenced by the alloy composition and the pouring temperature of each specimen; the higher the pouring temperature, the better the treatment of alloy. The photomicrographs indicate that the higher the pouring temperature usedin the metal casting (brass), the lesser the carbon element contained in the material.

Performance Enhancement of Shell and Tube Heat Exchanger on Parallel Flow with Single Segmental Baffle Avita Ayu Permanasari; Poppy Puspitasari; Sukarni Sukarni; Retno Wulandari
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 4, No 1 (2020)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um016v4i12020p043

The shell and tube heat exchanger was a tool to exchange the heat energy between fluids with different temperatures that occurred through direct or indirect contact. The energy exchange in fluids could be occurred with the same phase (liquid to liquid or gas to gas) or two fluids with different phase. To date, the process of heat transfer in the industrial field was crucial in machine work. Therefore, there were studies directed to optimize and develop the function and thermal performance of a heat exchanger by adding Baffles to the side of the shell. Vortex flow that occurs with the addition of baffles will make the area of fluid contact in the shell with the tube wall larger, so the heat transfer between the two fluids will increase. This study aimed to obtain the efficiency of the heat exchanger and its effectiveness when put on parallel flow. The heat exchanger had the dimensions of 54.6 x 10-3 m in outer diameter and 22.4 x 10-3 m in inner diameter with a tube thickness of 3 mm. The variations on water flow from both fluids were 0.5, 1, 1.5, 2 l/min for hot water and 1, 2, 3, 4 l/min for cold water to obtain the effectiveness of heat exchanger on parallel flow. This research heated the hot fluid in electric heating and used water as the cold fluid. The results showed that heat exchanger with single segmental baffle was more efficient in reducing heat in hot water than heat exchanger without bafe. The flow of fluid affected the average temperature difference; the higher the flow of fluid created a more significant temperature difference. The use of single segmental baffle affected the average temperature difference that was higher than without the baffle. The use of single segmental baffle also influenced the heat transfer greater than without baffle because of the longer distance travelled by the fluid on single segmental baffle with the same flow. Thus, the heat transfer process that occurred was more significant by using a single segmental baffle.

The Strength of Moulding Sand Consisting of a Mixture of Bentonite, Tapioca Flour, and Sago Flour as a New Binder Formula to Improve the Quality of Al-Si Cast Alloy Andoko Andoko; Riana Nurmalasari; M. Alfian Mizar; Retno Wulandari; Poppy Puspitasari; Avita Ayu Permanasari
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 1, No 1 (2017)
Publisher : Universitas Negeri Malang

The major factors determining the quality of sand casting products are the base sand and the composition of the sand mould and the binding material. In the foundry industry, the most commonly used binder for creating sand moulds is bentonite. However, the price of bentonite is likely to keep rising. This study aimed at discovering a new binder formula associated with the effect of binder composition i.e. bentonite, tapioca flour, and sago flour on the basis of its mechanical and physical properties. The new formula was expected to be a better binder in the production of sand moulds, resulting in high-quality casting products with minimal defects. Moreover, it is probable to be much more economical than bentonite. This research focused on testing the moulding sand composition with a number of different binders, i.e. bentonite, tapioca flour, and sago flour, each in a different proportion. The mixture of the moulding sand with each of the three binders will be tested in terms of its mechanical properties including compressive, shear, and tensile strength. Based on the test results, sago flour has the highest dry compressive strength of 28.6 N/cm2, whereas bentonite has the highest wet compressive strength, i.e. 11.83 N/cm2 and the highest wet shear strength i.e. 3.16 N/cm2. The binder with the highest dry shear strength is tapioca flour with 18.16 N/cm2. Regarding the tensile strength value, bentonite has the highest wet tensile strength of 0.85 N/cm2, while sago flour has the highest dry tensile strength of 1.73 N/cm2.

Analysis of Strength of Glass Fibre Composite Leaf Spring Using Finite Element Method Andoko Andoko; Poppy Puspitasari; Avita Ayu Permanasari
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 1, No 1 (2017)
Publisher : Universitas Negeri Malang

Leaf spring, as one of the main components of the suspension system, serves the function of absorbing road shocks and any wheel vibrations, preventing them from being transmitted directly to the vehicle body. Moreover, it can increase the tire traction as well as support the weight of the vehicle and various kinds of external forces. Various studies on the use of composite materials for leaf springs have shown that the strength of composite leaf spring is similar to steel leaf spring with the same load carrying capacity. However, the composite leaf spring has the added advantage of being more lightweight. In fact, composite materials have been preferable for many purposes not only because of its properties but also its lightweight structure and cost effectiveness. The analysis process was carried out using the finite element method by means of ANSYS software to display the output of the analysis being performed. After the output is known, the amount of voltage in conventional, mounted, and progressive spring can be determined. Based on the data analysis, we concluded that conventional straight leaf springs produced a maximum voltage of 653.13 MPa and maximum deflection of 4367.1 mm. The results of the analysis using the finite element method showed that conventional leaf springs (both straight and not) are considered as the most effective model of leaf spring in terms of the power generated.

Damage Simulation of Pre-Forming V-Neck Plates with Variations in Material Type, Time and Temperature Using the Taguchi Method Avita Ayu Permanasari; Poppy Puspitasari; Kevin Valiant Cahya; Mahfud Ihsan
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 2, No 1 (2018)
Publisher : Universitas Negeri Malang

In metal forming, damage can be caused by several factors: load on the workpiece, initial heating temperature, and temperature due to the friction between the die and the material for pre-forming. The metal forming process can be executed in 2 ways, namely by hot working and cold working. During these two types of mechanical working process, the metal undergoes plastic deformation. In hot working, the required deformation force is relatively low, and changes in mechanical properties are also insignificant. In cold working, a higher force is required, but the strength of the metal will increase significantly. The use of simulation has become increasingly widespread to predict and describe process mechanisms and optimize the pre-forming process. The study was conducted using a three-dimensional (3D) simulation to predict the effect of variations in time, material and temperature on the damage of pre-forming blocks. The simulation results showed that the greatest damage occurred after 0.006 s and at 25 °C to the specimen 1 (Aluminium 1xxx) with the highest damage value of 0.011833 which occurred. Specimen 7 (Aluminium 3xxx) had the lowest damage with the value of 0.011542 which occurred after 0.010 s and at 25 °C.

The Potential of Waste Cooking Oil B20 Biodiesel Fuel with Lemon Essential Oil Bioadditive: Physicochemical Properties, Molecular Bonding, and Fuel Consumption Avita Ayu Permanasari; Muhammad Najib Mauludi; Sukarni Sukarni; Poppy Puspitasari; Siti Nur Azella Zaine; Wahyunengsih Wahyunengsih
Bulletin of Chemical Reaction Engineering & Catalysis 2021: BCREC Volume 16 Issue 3 Year 2021 (September 2021)
Publisher : Department of Chemical Engineering - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.16.3.10493.555-564

This study is motivated by the depletion of fossil fuels in nature, which is inversely proportional to the higher level of fuel oil consumption, so the need for alternative fuels, namely biodiesel. Biodiesel can be made using waste cooking oil because of its abundant quantity, low price, and not being reused. One of the efforts to achieve energy conservation and improve fuel quality is using bioadditives. A lemon essential oil can be used as a bio-additive because it is easily soluble in fuel and its oxygen-rich content can reduce the rate of fuel consumption. The process in this study is to produce biodiesel with waste cooking oil (WCO) using a transesterification process. Biodiesel samples containing the bioadditive lemon essential oil on B20 biodiesel with varying volume fraction (0%; 0.1%; 0.15%; 0.2%). In general, this research can be done in three steps. The first step is the characterization of the compound composition (GCMS) and functional group (FTIR) of diesel fuel, biodiesel, and lemon essential oil bioadditive. The second step is the characterization of the physicochemical properties (density, viscosity, flash point, calorific value) of B20 biodiesel with various concentrations of lemon essential oil bioadditive, then compared with SNI 7182:2015. The third step is determining the rate of fuel consumption in diesel engines. The results show that Biodiesel B20 with a volume fraction of 2% lemon essential oil bioadditive has a high ability to reduce the rate of fuel consumption. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

Co-Authors Andoko Andoko, Andoko Anindito Purnowidodo Aprilia Sari Yudha Ardianto Prasetiyo Bayu Angga Pratama Danang Priyasudana Didin Zakaria Lubis Diki Dwi Pramono Heru Suryanto Kevin Valiant Cahya M. Alfian Mizar Mahfud Ihsan Majid Niaz Akhtar Malik Abdurrachman Moch. Agus Choiron Mochammad Agus Choiron Muhammad Ilman Hakimi Chua Abdullah Muhammad Najib Mauludi Muhammad Rizky Purwanto Nafisah Arina Hidayati Retno Wulandari Retno Wulandari Reyhandi Katon Asmoro Riana Nurmalasari Rr. Poppy Puspitasari Simonne Andrean Crisdion Siti Nur Azella Zaine Sukarni Sukarni Sukarni Sukarni Wahyunengsih Wahyunengsih

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