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All Journal Jurnal Rekayasa Mesin Kinetik: Game Technology, Information System, Computer Network, Computing, Electronics, and Control Jurnal Engine: Energi, Manufaktur, dan Material Jurnal Nasional Teknologi Terapan Jurnal Nasional Teknik Elektro dan Teknologi Informasi
Andhi Akhmad Ismail
Universitas Gadjah Mada
Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Rancang Bangun Pompa Air Tenaga Angin Untuk Pengairan Sawah Menggunakan Vertical Wind Turbine Tipe Savonius Sugiyanto, B. Tulung Prayoga, Andhi Akhmad Ismail, (Politeknik Negeri Semarang)
Jurnal Rekayasa Mesin Vol 9, No 1 (2014): Volume 9, Nomor 1, April 2014
Publisher : Jurusan Teknik Mesin - Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (316.816 KB) | DOI: 10.32497/rm.v9i1.444

Abstract

Pompa air sangat efektif untuk  pengairan sawah terutama untuk daerah yang ketersediaan air tidak tercukupi sepanjang tahun, tetapi penggunakan pompa air juga mempunyai dampak ekonomi terhadap petani karena petani harus mengeluarkan biaya lebih untuk pembelian bahan bakar dan sewa pompa air tersebut. Sehingga diperlukan suatu alat yang dapat menjadi pompa air tanpa harus mengeluarkan biaya dalam penggunaannya. Di sisi lain, sawah sebagai salah satu lahan terbuka, memberikan perpindahan udara yang cukup untuk membantu terjadinya angin. Angin jika dimanfaatkan secara tepat bisa dijadikan sebagai energi  alternatif penggerak pompa air. Dari analisa lapangan didapatkan kondisi lahan pertanian terbuka di daerah itu mempunyai laju kecepatan angin yang termasuk kategori rendah, yaitu berkisar 2 – 3 m/detik. Dengan kondisi ini memerlukan perancangan turbin angin  yang mampu bekerja pada kondisi kecepatan angin yang rendah. Maka pemilihan turbin angin vertikal (VAWT) menjadi alternative terbaik. Tipe VAWT yang dipakai adalah tipe Savonius banyak tingkat untuk memungkinkan mendapatkan torsi yang tinggi. Pompa air tenaga angin dengan mekanisme pompa tali seal karet dapat digunakan untuk membantu sistem  pengairan  sawah.  Hasil pengujian skala laboratorium dengan bantuan blower sebagai sumber energi angin adalah pada putaran turbin 30.8 rpm dan putaran poros output 55 rpm debit yang dihasilkan 2,6 liter/menit. Pada putaran turbin 39 rpm dan putaran poros output 68 rpm debit yang dihasilkan 3,4 liter/menit. Sedangkan pada putaran turbin 39.5 rpm dan putaran poros output 71,7 rpm debit yang dihasilkan 4,2 liter/menit.Keywords : “Pompa Air Tenaga Angin”, “Vertical Axis Wind Turbine”, “Rotor Savonius”, “Pengairan Sawah”
Desain Material Sweeper Untuk Kendaraan Penghisab Debu Vulkanik Wikan Sakarinto; Andhi Akhmad Ismail; Andi Pratama; Putri Chairany
Jurnal Nasional Teknologi Terapan (JNTT) Vol 2, No 2 (2018): JULI
Publisher : Penelitian dan Pengabdian Kepada Masyarakat Sekolah Vokasi Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (406.781 KB) | DOI: 10.22146/jntt.42720

Abstract

In overseas, the road sweeper have been producted.  But, the expensive of import tax will befundamental problem for realisation the road sweeper from the overseas. The goal of this observationis making the the road sweeper which will be raised the amout in the future according UGM needed.And the part of  the road sweeper is the sweeper itself. The problem which has been observated isgiving the proper testing for steel wire as the based material in making a sweeper. Because of that,for knowing the proper testing in the steel wire, then doing observation which has given a differenttreatment. As the component which has the work with lots of friction, so the sweeper must have highhardness, high wear resistance, and high tensile strength. Based on the result of spectrometer analiticreport which was did in science and accelerator technology laboratory-  BATAN. Based on the resultpicture of micro sweeper structur observation with material stainless steel in litterature has asimilarity with the picture of austenite and ferrite micro structure which has several   overages,especially in strength and high resistance to intergranular corrosion.
Application of Ant Colony Optimization for the Shortest Path Problem of Waste Collection Process Andhi Akhmad Ismail; Radhian Krisnaputra; Irfan Bahiuddin
Kinetik: Game Technology, Information System, Computer Network, Computing, Electronics, and Control Vo. 6, No. 3, August 2021
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/kinetik.v6i3.1307

Abstract

The search for the shortest path of the waste collection process is an interesting topic that can be applied to various cases, from a very practical basic problem to a complex automation system development. In a dense settlement, the waste collection system can be a challenging process, especially to determine the most optimized path. The obstacles can be circling streets, impassable roads, and dead-end roads. A wrong choice of method can result in wasteful consumption of energy. A possible method to solve the problem is the traveling salesman problem using ant colony search optimization, considering its relatively fast optimization process. Therefore, this paper proposes an application of ant colony and traveling salesperson problem in determining the shortest path of the waste collection process. The case study for the optimization algorithm application is the path UGM Sekip Lecturer Housing is considering. Firstly, the data was collected by measuring the distance between points. Then, the paths were modeled and then compared with the actual route used by waste transport vehicles. The last step is implementing the ant colony optimization and traveling salesman problem by determining the cost function and the parameters. The optimization process was conducted several times, considering the random generator within the algorithm. The simulation results show the probable shortest path with a value of about 752 meters so that the use of fossil fuels in waste transport vehicles can be more efficient. The results show that the algorithm can automatically recommend the minimized path length to collect waste.
Elastic Recovery Permukaan UHMWPE Berpasangan dengan Baja Tahan Karat 316L, Kobalt Khrom dan Titanium Budi Basuki; Andhi Akhmad Ismail
Jurnal Engine: Energi, Manufaktur, dan Material Vol 3, No 2 (2019)
Publisher : Proklamasi 45 University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30588/jeemm.v3i2.587

Abstract

Ultra High Molecular Weight Polyethylene (UHMWPE) is a biomedical polymer applied for orthopedic as hip, knee, ankle and lumbar disc implants. The use of this material is common as a joint component paired with metallic biomaterials such as 316L stainless steel (SS 316L), cobalt chrome alloy (CoCr) dan titanium. This application has a wear problem. UHMWPE implants are commonly made with machining processes, i.e. lathe and milling. The effect of machining is the surface roughness of implant products. Polymer highly elastic in which would induce the deformation of surface asperities during loading and unloading. This phenomenon is determined with a parameter called elastic recovery. The magnitude of elastic recovery relates to the wear of the polymer. This research numerically investigated the effect of metallic biomaterial types on the UHMWPE elastic recoveries. Those metals are CoCr, SS 316L, and titanium. Two-dimensional surface asperity models were loaded with physiological gait loads of hip and knee. Results from computational works showed an insignificant difference of UHMWPE elastic recoveries penetrated by the studied metals. Elastic recovery due to SS 316L with knee gait load is 55.19%, equal to CoCr while other results due to titanium are slightly higher, 55.224%. The difference for all metals is only 0.06 %. Contact pressures are also equal, 38.96 MPa (CoCr), 38.98 MPa (316L and titanium).
Penerapan Algoritma Ant System dalam Menemukan Jalur Optimal pada Traveling Salesman Problem (TSP) dengan Kekangan Kondisi Jalan Andhi Akhmad Ismail; Samiadji Herdjunanto; Priyatmadi
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 1 No 3: Agustus 2012
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (509.29 KB)

Abstract

The completion of Traveling Salesman Problem (TSP) is to find the shortest path to visit all of the cities. With the shortest path, it is expected that the travel time will also be shorter. In fact, when a salesman visits all of the cites in his list, he will find obstacles such as poor road conditions, congestion, damaged roads, or other constraints. Therefore, although the shortest path has been established, if there is an obstacle the travel time to all cities will be longer. One way to solve the TSP is by ant algorithm. The modifications were made to the Ant System by providing constraint pheromone to each road which could not be passed and also gave a long distance to the roads that should not be passed. The results of this study indicate that the ants never pass constrained sections, for square grid data also two data from TSPLIB95. This occurs because the segments were given constraints, the pheromone were weighted 0 and given the longest distance.
Co-Authors Andi Pratama Budi Basuki Irfan Bahiuddin Priyatmadi Putri Chairany Radhian Krisnaputra Samiadji Herdjunanto Wikan Sakarinto