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All Journal SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Multitek Indonesia : Jurnal Ilmiah Jurnal Teknik Mesin dan Mekatronika (Journal of Mechanical Engineering and Mechatronics) AEEJ : Journal of Automotive Engineering and Vocational Education AMMA : Jurnal Pengabdian Masyarakat AutoMech : Jurnal Teknik Mesin

Aini Lostari

Program Studi Teknik Mesin Sekolah Tinggi Teknik Qomaruddin Gresik

Author-ID : 3352631

Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Transportation Other

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Articles

Simulasi Peredam Getaran TDVA dan DDVA Tersusun Seri terhadap Respon Getaran Translasi Sistem Utama Aini Lostari
Journal of Mechanical Engineering and Mechatronics Vol 2, No 01 (2017): Journal of Mechanical Engineering and Mechatronics
Publisher : President University

A system can be subjected to excessive vibration if the force acting on it approaches the natural frequency of the system. The way to do it, especially for single operating frequency, is adding the dynamic vibration absorber. Generally, the dynamic vibration absorber is a mass-spring-damper addition to the main system. This study researches the effects comparison of Without Dynamic Vibration Absorber and Series Double Dynamic Vibration Absorber on the main system response. Electric motor with unbalanced masses is used as the exciter and placed on the two beams. The main mass is supported by these beams. This system has the specified dynamic equations. The main system response absorber TDVA addition gives 0.008291meter displacement rms at 1, 002 frequency-ratio. The one with DDVA system response absorber with Ma1=1/20 and Ma2 =1/20, Ma1=2/30 and Ma2 =1/30, and Ma1=1/40 and Ma2 =1/40 gives 0.001484 meter, 0.002691 meter, and 0.001343 meter. The system with SDVA gives better response than DDVA. The first absorber mass ability to reduce main mass response is disturbed by the second absorber mass existence.

MODELING AND VIBRATION RESPONSE ANALYSIS OF PELLET MACHINE GRINDER AND GEARBOX Aini Lostari; Susastro Susastro; Talifatim Machfuroh
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol 14, No 2 (2020): SINTEK JURNAL
Publisher : University of Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.14.2.99-106

Pellet machine is a machine used to print feed in the form of pellets. In this machine, if it operates, it can experience excessive vibration and the force acting on the machine is close to its natural frequency and can cause damage, so it needs to be reduced. In this study, the objective of this research is to model and simulate vibrations in the gearbox and grinder to determine the results of the displacement and acceleration vibration responses on the pellet machine. In this study, an electric motor is used as a source of rotation and an input clutch as a connection between the shaft of the electric motor and the gearbox as a transmission to reduce the speed of the electric motor, where the rotation produced by the electric motor contains vibrations, the output coupling is the connecting shaft between the gearbox shaft and the shaft grinder and miller as a tool used to print pellets. From the existing physical form, mathematical equations and simulation blocks are constructed. In this research, it is found that the vibration response generated from the gearbox and grinder can be modeled with the x and z axes as the center of the system. The higher the vibration response, the higher the given frequency, the greater the amplitude and rms of the displacement and acceleration responses in each part, namely the motor, clutch in, gearbox gearbox, coupling out, and grinder will be greater. The result of displacement vibration response yields an rms of 1.956. The worm gear in the gearbox produces a displacement vibration of 1.0585 m and an acceleration of 6.8485 m/s2. The mill produces a displacement vibration of 1.0891 m and an acceleration of 5.1095 m/s2.

MESIN CACAH RUMPUT, SOLUSI PENGOLAHAN PAKAN TERNAK UNTUK PENINGKATAN BOBOT DAN KESEHATAN TERNAK DI DESA MENTARAS, KECAMATAN DUKUN, KABUPATEN GRESIK Shultoni Mahardika; R. Yudi Hartono; Aini Lostari; Novi Indah Riani; Didik Sugiono
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 6, No 1 (2022): Maret
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpmb.v6i1.7560

ABSTRAKDesa Mentaras Kecamatan Dukun Kabupaten Gresik merupakan salah satu sentral pertanian dan peternakan di kabupaten Gresik. Salah satu mata pencaharian yang ditekuni penduduk adalah beternak sapi dan kambing. Pakan memegang peranan yang sangat penting dalam rantai produksi peternakan. Masalah yang dialami peternak desa mentaras yakni proses penyajian pakan kepada ternak biasanya dilakukan secara langsung, tanpa perlakuan atau manipulasi sebelumnya. Hal ini dapat mengurangi efisiensi dalam penggunaan pakan hijauan. Penyajian pakan tersebut cenderung menghasilkan sisa makanan karena tidak habis dimakan maupun jatuh ke tanah. Kegiatan ini bertujuan untuk memberikan solusi pengolahan pakan ternak untuk mengatasi permasalahan yang dihadapi masyarakat Desa Mentaras. Metode pengabdian masyarakat ini adalah membuat mesin cacah rumput yang digunakan untuk mencacah rumput pakan ternak baik rumput basah maupun rumput kering. Setelah mesin tersebut selesai, kemudian dilakukan workshop penggunaan mesin untuk mencapai tujuan yang telah direncanakan. Hasil dari pengabdian ini diwujudkanlah mesin sesuai dengan konsep desain. Mesin ini menggunakan motor listrik berdaya 1 Hp dan mempunyai kecepatan putar motor 1420 RPM. Kapasitas produksi mesin ini yakni 100 kg/jam untuk pencacahan rumput basah dan 70 Kg/jam untuk pencacahan rumput kering. Dengan adanya mesin ini maka rumput ternak telah tercacah dengan ukuran 3-4 cm dan dapat ditambahkan bahan lainnya guna menambah gizi ternak, sehingga lebih sehat dan gemuk. Kata kunci: mesin cacah; pakan ternak; ternak. ABSTRACTMentaras Village, Dukun District, Gresik Regency is one of the centers of agriculture and animal husbandry in Gresik Regency. One of the livelihoods occupied by residents is raising cows and goats. Feed plays a very important role in the livestock production chain. The problem experienced by farmers in Mentaras village is that the process of serving feed to livestock is usually done directly, without any previous treatment or manipulation. This can reduce efficiency in the use of forage feeds. The presentation of the feed tends to produce food residue because it is not eaten or falls to the ground. This activity aims to provide solutions for animal feed processing to overcome the problems faced by the Mentaras Village community. This community service method is to make a grass chopper machine that is used to chop animal feed grass, both wet grass and dry grass. After the machine is finished, then a workshop on the use of the machine is carried out to achieve the planned goals. The result of this service is that the machine is realized according to the design concept. This machine uses an electric motor with a power of 1 HP and has a motor rotation speed of 1420 RPM. The production capacity of this machine is 100 kg/hour for chopping wet grass and 70 kg/hour for chopping dry grass. With this machine, the livestock grass has been chopped with a size of 3-4 cm and other ingredients can be added to increase the nutrition of the livestock, making it healthier and fatter. keywords: chopping machine; animal feed; livestock

DESAIN RANSEL PENGHASIL LISTRIK DENGAN MEMANFAATKAN TENAGA GERAK BERJALAN MANUSIA Aini Aini Lostari; R Yudi Hartono
MULTITEK INDONESIA Vol 13, No 2 (2019): Desember
Publisher : Universitas Muhammadiyah Ponorogo

Energy is something that cannot be separated from human life because every activity carried out requires and produces energy. From some energy sources, there are activities carried out by the human body which are the potential to produce energy that can be utilized. One of the human activities that are often done is walking and running so that from this movement energy sources can be created. In this study, the calculation and design of backpacks with changes in length variations, variations in spring constants, and optimization of generators to produce electrical energy are better. This research began by designing a backpack that generates electricity by utilizing the power of human walking. Then the determination of product requirements is related to gathering information and products to be designed. Information obtained from previous research journals. Next, a study was carried out on the design of a backpack related to the calculation of the frequency of human gait needed to move a backpack and the calculation of springs. In this study, the results obtained are the voltage generated when the human condition goes by 3.863 watts, and when the human condition goes upstairs by 4.56 watts, while the running condition is 5.39 watts. So that the more movements humans make, the higher the voltage generated. And the resulting spring constant value is Ktotal = 22,612 N / m, and for the unit spring constant is 11,306 N / m. While the magnitude of the force produced by the load is 17.48 N.

Perbandingan Kualitas Poros Roda Depan Honda Beat Orisinil dan Imitasi Aini Lostari; R. Yudi Hartono
MULTITEK INDONESIA Vol 12, No 2 (2018): Desember
Publisher : Universitas Muhammadiyah Ponorogo

Industrial industrial products on the market are manipulating between original and imitation products, products that are imitated are sold at lower prices and have lower quality. However, the product is in great demand by the public. The research aims to determine the quality level of the original and imitation front axle, both from the hardness, and the chemical composition of the material, and to compare the prices given with quality. This research was conducted by testing the chemical composition using a spectrometer and brinell hardness testing carried out in the STTQ Bungah Gresik mechanical engineering laboratory. In addition, the research uses materials with two front wheel shafts for testing chemical composition with six wheel shaft specimens both original and imitation. Research with spectrometer testing showed that the shaft is included in the low carbon steel group with an original carbon content of 0.192% and an imitation shaft of 0.155%, also included in the low alloy steel group because the number of alloys is less than 2.5%, while in hardness testing brinell found the original shaft harder than the imitation shaft, either on the surface or inside with a percentage of 52.14% difference between the two. For the comparison between price and quality given between the two shafts, the percentage where the value of the comparison of violence is greater is around 49.97% to 52.14% rather than the price ratio of around 20% given by the producer, it would be better for consumers to buy original shafts than the imitation.

Pengaruh Penggunaan Bahan Bakar Pertamax 92 dan Akra 92 Terhadap Unjuk Kerja Motor Bensin 4 Langkah (Ichikawa PT-3700V, 163cc) R Yudi Hartono; Aini Lostari
MULTITEK INDONESIA Vol 12, No 2 (2018): Desember
Publisher : Universitas Muhammadiyah Ponorogo

The use of fuel in the automotive world is very important because it can improve the performance of the fuel motor. Fuel with high octane numbers will be able to boost the performance of the fuel motor. The selection of the right fuel will also be a reference in the process of motor maintenance in the automotive world in Indonesia, now again being incessantly making creations and innovations. This research is to find out the power, torque, and average effective pressure (BMEP). The research method used is an experimental method using two fuels, namely Pertamax 92 and Akra 92. This needs to be done because both of these fuels have the same octane number as the performance test against the need to prove which one can be used for gasoline type vehicles. From the research results obtained the power, torque, and the firstx BMEP 92 are higher than the power, torque and BMEP akra 92.

Karakterististik CDI Standard dan CDI shogun 110 cc Terhadap Performa Sepeda Motor GL Max 125 CC Didik Sugiono; Novi Indah Riani; Aini Lostari; Aries Kusdyanto
AEEJ : Journal of Automotive Engineering and Vocational Education Vol 3 No 2 (2022): AEEJ : Journal of Automotive Engineering and Vocational Education
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/aeej.v3i2.157

The purpose of this study was to determine the performance characteristics of a Honda GL max 125cc motorcycle engine using standard CDI and 110cc shogun CDI standard CDI with 110cc shogun CDI used on Honda GL Max motorcycles. 125c. Real data collection procedures, with the on-road test method and analyzed descriptively. The test results and analysis show that the increase in gear ratio and the difference in initial start on the two CDi influences engine performance, including speed, acceleration, power, torque, SFC (fuel consumption) on the motorcycle. The test results for speed and acceleration values decrease, and the standard CDI energy value and the Shogun 110cc CDI decrease with increasing gears. Power experiences the greatest increase in the 110cc Shogun CDI compared to the standard CDI, and torque has increased. At the same time, fuel consumption is more efficient than the standard CDI due to the ratio gear from the manufacturer having been adapted to the condition of the motor. Tujuan penelitian ini untuk mengetahui karateristik performa mesin sepeda motor Honda GL max 125cc dengan menggunakan CDI standart dan CDI shogun 110cc CDI standar dengan CDI shogun 110cc yang digunakan pada motor honda GL Max 125c. Prosedur pengambilan data secara real, dengan metode on road test serta dianalisis secara deskriptif. Hasil pengujian dan analisa menunjukkan bahwa peningkatan rasio gear dan perbedaan awal start pada kedua CDi memilki pengaruh pada performa mesin antara lain kecetapan, percepatan, daya, torsi, Sfc (konsumsi bahan bakar) pada sepeda motor tersebut. Hasil pengujian untuk kecepatan dan percepatan nilainya semakin menurun, nilai energi CDI standar dan CDI Shogun110cc mengalami penurunan seiring peningkatan gigi, Untuk daya mengalami Peningkatan terbesar pada CDI shogun 110cc daripada CDI standar dan torsi mengalami peningkatan, sedangkan konsumsi bahan bakar lebih hemat CDI standar disebabkan rasio gear dari pabrikan telah disesuaikan dengan kondisi motor.

Peningkatkan Jumlah Produksi Pengasapan Ikan Di Desa Campurejo, Kecamatan Panceng, Gresik Novi Indah Riani; Aini Lostari; Miftahul Ulum; Moh. Yusril Fahmi
AMMA : Jurnal Pengabdian Masyarakat Vol. 2 No. 3 (2023): AMMA : Jurnal Pengabdian Masyarakat
Publisher : CV. Multi Kreasi Media

Show Abstract | Download Original | Original Source | Check in Google Scholar

The biggest potential possessed by Campurejo Village, Panceng-Gresik District is its natural resources which are close to the sea. This makes the majority of its peoples work as fishermen. The fish caught are usually sold directly in the market or processed into smoked fish. The smoking process is carried out conventionally. This can make the amount of smoked fish production limited each day. This activity aims to provide a solution to increasing the amount of smoked fish production produced every day by using more modern machines. After the machine has been made, a machine use workshop is held with the aim of providing information regarding the use and advantages of this machine. This machine has a capacity of 14 Watts, with an AC current source and a roasting time of 30 minutes to produce 5 kg of smoked fish.

STUDI EKSPERIMENTAL PENGARUH VARIASI JARAK GAP (G/D) PADA SILINDER SIRKULAR YANG TERSUSUN SECARA TANDEM TERHADAP KARAKTERISTIK ALIRAN Muhammad Khamdan Hanafi; Novi Indah Riani; Aini Lostari; R. Yudi Hartono
AutoMech : Jurnal Teknik Mesin Vol 3, No 02 (2023): Nopember
Publisher : Universitas Muhammadiyah Ponorogo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24269/jtm.v3i02.8053

Aliran melintasi suatu bluff body salah satunya adalah bentuk silinder silkular yang banyak dijumpai dalam aplikasi engineering. Ketika melintasi suatu susunan silinder maka aliran tersebut akan membentuk pola (pattern) tertentu hal ini berdampak terhadap karakteristik aerodinamika dari silinder didalam susunan tersebut. Saat melintasi bodi aliran akan membentuk suatu pola aliran (flow pattern) yang sesuai dengan geometri kontur bodi dan juga menimbulkan gaya – gaya aerodinamika,untuk mengetahui tekanan aliran pada silinder silkular secara tandem. Penambahan pengganggu yang diletakkan di depan silinder sirkular bertujuan untuk mempercepat aliran dari laminar ke turbulen sehingga separasi aliran bisa ditunda lebih lambat sehingga pressure drag yang dihasilkan lebih kecil Metode penelitian yang digunakan adalah eksperimental dengan menggunakan dua buah silinder sirkular disusun secara tandem berdiameter (D) 25 mm dengan variasi G/D 0, 1, 2, 3 dan dua buah bodi pengganggu berbentuk square di depan masing-masing silinder berdimensi 4 mm. Posisi sudut pengganggu konstan sebesar 30o dan jarak gap 0,4 mm. Bilangan Reynolds berdasarkan silinder yang digunakan yaitu 2,3x104. Penelitian ini bertujuan untuk mendapatkan distribusi koefisien tekanan (Cp) koefisien drag pressure (Cdp) dan velocity profile dibelakang benda uji. Hasil menunjukkan bahwa yang terbaik pada variasi G/D 2 dengan nilai 0.22137 pada silinder upstream.

Co-Authors Aries Kusdyanto Didik Sugiono Miftahul Ulum Moh. Yusril Fahmi Muhammad Khamdan Hanafi Novi Indah Riani R. Yudi Hartono Shultoni Mahardika Susastro Susastro Talifatim Machfuroh

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