Articles
<![CDATA[Failure Analysis of Brake Panel on Automotive Braking System ]]>
<![CDATA[Yoyok Winardi]]>;
<![CDATA[Munaji Munaji]]>
<![CDATA[ JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering) Vol. 4 No. 1 (2019) ]]>
Publisher : <![CDATA[University of Muhammadiyah Malang ]]>
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DOI: 10.22219/jemmme.v4i1.7092
<![CDATA[ This paper presents the results of a failure analysis investigation conducted in the braking componentof motorcycle. One of the components is the brake panel. This component has been replaced in the non-authorized dealer. After used within 3 months, the brake panels broken during the braking process. The investigation involves several procedures and testing techniques, including: visual observation, chemical composition testing, fractography and hardness testing. Based on the results of the chemical composition testing, the brake panels are made of aluminum alloy (Al-Si) series 4xxx. Fractography was performed in scanning electron microscopy (SEM) and optical microscopy (OM). Vickers hardness machine is used to test the hardness. The result of the observations indicate porosity along the fracture area. The result of the hardness testing shows that the distribution of hardness in different zones is very uniform. Based on the overall analysis, the failure of the brake panel caused by stress concentration. Porosity in the solid solutions of brake panel is the cause. The emergence of porosity was suspected an error during the casting process.]]>
<![CDATA[M Pengembangan Pompa Irigasi Pertanian Menggunakan Energi Listrik Tenaga Surya di Desa Duri, Slahung, Ponorogo ]]>
<![CDATA[Didik Riyanto]]>;
<![CDATA[Yoyok Winardi]]>;
<![CDATA[Mohammad Muhsin]]>
<![CDATA[ Agrokreatif: Jurnal Ilmiah Pengabdian kepada Masyarakat Vol. 7 No. 2 (2021): Agrokreatif Jurnal Ilmiah Pengabdian Kepada Masyarakat ]]>
Publisher : <![CDATA[Institut Pertanian Bogor ]]>
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DOI: 10.29244/agrokreatif.7.2.162-167
<![CDATA[Community service program To develop agricultural irrigation is carried out in Duri village, Slahung sub-district, Ponorogo district. Agriculture in Duri village has been dependent on irrigation from the rain so agricultural activities only rely on the availability of water during the rainy season, while the potential for water from groundwater with a depth of 20 m has not been able to be utilized optimally because it is constrained by relatively expensive equipment and technology. For this reason, a community service program is carried out which aims to meet the irrigation needs of farmers. The method of implementing activities consists of an inventory of data related to the conditions and needs of materials to be applied with technology, technology design, technology application, training in the use of technology, and evaluation. The result of the activity is a program of implementing an irrigation pump with solar cell electricity that is applied to one of the farmer groups' fields, namely a water pump that is able to lift water from a depth of 20 m with a water discharge of 1080 L/hour and is able to last for 2 hours. able to meet water needs in the dry season and can be used to grow crops on a small scale such as vegetable crops on a land area of 100 m.]]>
<![CDATA[PENGARUH SIFAT PERMUKAAN TERHADAP STRUKTUR MIKRO DAN KEKUATAN MEKANIK SAMBUNGAN BAJA KARBON DAN TEMBAGA ]]>
<![CDATA[Nanang Sufiadi Ahmad]]>;
<![CDATA[Yoyok Winardi]]>
<![CDATA[ MULTITEK INDONESIA Vol 13, No 1 (2019): Juli ]]>
Publisher : <![CDATA[Universitas Muhammadiyah Ponorogo ]]>
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DOI: 10.24269/mtkind.v13i1.1330
<![CDATA[Baja dan tembaga secara luas dipakai untuk berbagai macam kontruksi, karena kedua material itu memiliki sifat yang saling melengkapi. Penelitian ini ditujukan untuk menyelidiki pengaruh sifat permukaan logam dasar terhadap struktur mikro dan kekuatan mekanik sambungan antara baja karbon dan tembaga. Penyambungan dilakukan dengan proses brazing. Sifat permukaan kedua logam didapat dengan cara digosok menggunakan kertas amplas dari grid 100,500,1000,1500, dan 2000. Struktur mikro daerah sambungan brazing diamati menggunakan scanning electron microscope (SEM) setelah melalui tahap poles dan etsa. Kekuatan mekanik sambungan diuji menggunakan universal testing machine (UTM). Dari hasil pengamatan struktur mikro didapatkan hasil bahwa logam pengisi mampu mengalir memenuhi celah sambungan pada setiap variasi kekasaran permukaan. Berdasarkan uji tarik, kekuatan tarik meningkat ketika permukaan semakin halus. Kekuatan tarik maksimum mencapai 7741,8854 N/mm2 ketika permukaan logam dasar diamplas dengan grid 2000.]]>
<![CDATA[IPTEK BAGI PETERNAK KAMBING KELOMPOK MASYARAKAT “MAISYAH” KELURAHAN TONATAN KABUPATEN PONOROGO ]]>
<![CDATA[Fadelan Fadelan]]>;
<![CDATA[Munaji Munaji]]>;
<![CDATA[Sudarno Sudarno]]>;
<![CDATA[Yoyok Winardi]]>
<![CDATA[ ADIMAS Jurnal Pengabdian Kepada Masyarakat Vol 4, No 2 (2020): September ]]>
Publisher : <![CDATA[Universitas Muhammadiyah Ponorogo ]]>
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DOI: 10.24269/adi.v4i2.2107
<![CDATA[Telah dilaksanakan program pengabdian kepada masyarakat berupa kegiatan Iptek bagi Masyarakat Pokmas Maisyah Kelurahan Tonatan Kecamatan Kota Kabupaten Ponorogo. Kelompok masyarakat (Pokmas). Maisyah berdiri sejak tahun 2012 di Kelurahan Tonatan Kecamatan Kota Kabupaten Ponorogo. Kelompok ini beranggotakan 11 kepala keluarga yang sebagian besar anggotanya adalah petani. Anggota Pokmas ini selain sebagai petani juga memiliki usaha peternakan kambing. Permasalahan yang dihadapi adalah belum adanya alat pencacah rumput yang dibutuhkan untuk proses penyediaan pakan. Program ini difokuskan pada pengadaan alat pencacah rumput sebagai bahan dasar pakan ternak. Teknologi tepat guna berupa alat pencacah rumput yang dirancang mampu berproduksi dengan kapasitas 110 kg/jam. Pelaksanaan program ini telah berhasil membantu meningkatkan proses produksi pakan ternak di Pokmas Maisyah. Sebagai tindak lanjut perlu dilakukan pelatihan lanjutan tentang pembuatan pakan fermentasi dan manajemen pengelolaan proyek penggemukan kambing]]>
<![CDATA[PENGARUH HEAT INPUT TERHADAP HASIL KEKUATAN SAMBUNGAN PENGELASAN SMAW PADA MATERIAL STAINLESS STEEL 201 ]]>
<![CDATA[Valla Yuntan Fauzi Romdhoni]]>;
<![CDATA[Fadelan Fadelan]]>;
<![CDATA[Yoyok Winardi]]>
<![CDATA[ KOMPUTEK Vol 3, No 2 (2019): Oktober ]]>
Publisher : <![CDATA[Universitas Muhammadiyah Ponorogo ]]>
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DOI: 10.24269/jkt.v3i2.256
<![CDATA[This research aims to know the strength of the connection as well as welding heat input current in connection with welding method using the method exsperimen. This research using a variation on the current 40 A, 50 A and the A 60 with material using SMAW welding technique of stainless steel 201. The results obtained from the test data and test pull rockwel violence showed the presence of the influence of the use of violence against the current and voltage drop of the welding connection. The larger the flow used will be the bigger value is also violence and its voltage, but at 60 A stream of violence and its voltage decline. Rockwell hardness test results for the area of las who have the highest violence are contained in the current 50 A of 73.60 HRB and the lowest at 40 A with flow of 63.6 HRB. As for the pull-test results with the flow that gets the results of voltage drop on average the highest found in the current 50 A of 0.711 kN/mm 2 and to pull the average voltage low current is present on 60 A of 0.5199 kN/mm2.]]>
<![CDATA[PENGARUH VARIASI PANJANG PEGAS KOPLING TERHADAP PERFORMA DAN KONSUMSI BAHAN BAKAR PADA HONDA TIGER 200 CC ]]>
<![CDATA[Panji Laksono Adji]]>;
<![CDATA[Kuntang Winangun]]>;
<![CDATA[Yoyok Winardi]]>
<![CDATA[ KOMPUTEK Vol 5, No 1 (2021): April ]]>
Publisher : <![CDATA[Universitas Muhammadiyah Ponorogo ]]>
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DOI: 10.24269/jkt.v5i1.681
<![CDATA[Good acceleration and performance are influenced by the degree of flexibility of the clutch springs. The objective that underlies the implementation of this study is to determine the effect of replacing the clutch spring with different length variations. In this study, the data taken is the torque, power and fuel consumption of each type of clutch spring. In this test, two types of clutch springs were used, namely the standard clutch spring and the TDR type coupling spring which were varied in length (38.31mm), (40.93mm) with the addition of 2mm (42.93mm), (40.31mm) rings. also cutting thread 2mm (38.93mm), (36.31mm). Tests were carried out using a dynotest tool with an engine speed of 4000 rpm to 9000 rpm transmission position six. In the TDR clutch spring (42.93mm) there is an increase in torque of 7.42% with a torque yield of 16.20 Nm at 6000 rpm and an increase in power of 6.61% with a power yield of 14.5 HP at 7000 rpm. For fuel consumption TDR coupling spring at ideal rotation (low-medium), an increase of 9.68%. The decrease in fuel consumption only occurred at the top / high speed of 6.32%. For the test results pertalite ethanol fuel, there is a decrease in fuel consumption compared to pertalite fuel for all RPM variables]]>
<![CDATA[PENGARUH MATERIAL ELEMEN BARA API TERHADAP EFISIENSI KOMPOR LPG ]]>
<![CDATA[Aji Prima Wicaksono]]>;
<![CDATA[Sudarno Sudarno]]>;
<![CDATA[Yoyok Winardi]]>
<![CDATA[ KOMPUTEK Vol 2, No 2 (2018): Oktober ]]>
Publisher : <![CDATA[Universitas Muhammadiyah Ponorogo ]]>
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DOI: 10.24269/jkt.v2i2.136
<![CDATA[Gas alam adalah sumber daya Alam yang tidak dapat diperbarui. Salah satu upaya untuk sedikit menghemat gas alam adalah dengan pengoptimalan pemanfaatan panas yang dihasilkan oleh kompor LPG. Rekayasa kontruksi dan penemuan hasil penelitian telah banyak dilakukan untuk meningkatkan efisiensi kompor LPG tersebut. Pemasangan elemen bara api dengan variasi material bertujuan untuk mengetahui material jenis apa yang dapat memberikan radiasi panas terbaik. Untuk mengetahui hal tersebut dilakukan pengujian pengaruh material elemen bara api terhadap peningkatan efisiensi kompor gas yang dikemas dalam model penelitian eksperimental. Pengujian dilakukan dengan metode air mendidih (boilling water method), dengan memasang elemen dengan material kawat nikelin, kawat kanthal dan kawat nicrom pada kompor LPG. Dari hasil penelitian yang dilakukan terdapat indikasi peningkatan efisiensi pada semua jenis material elemen, namun nilai peningkatan efisiensi tertinggi terdapat pada material kawat kanthal yaitu sebesar 55,57% meningkat 3.86% dibandingkan dengan tanpa menggunakan elemen bara api yang besarnya adalah 51,47 %.]]>
<![CDATA[PENGARUH REKONSTRUKSI PROFIL CAMSHAFT MESIN ASTRO 108 CC TERHADAP TORSI DAN DAYA ]]>
<![CDATA[Nur Priyanto]]>;
<![CDATA[Fadelan Fadelan]]>;
<![CDATA[Yoyok Winardi]]>
<![CDATA[ KOMPUTEK Vol 5, No 2 (2021): Oktober ]]>
Publisher : <![CDATA[Universitas Muhammadiyah Ponorogo ]]>
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DOI: 10.24269/jkt.v5i2.821
<![CDATA[Nowadays motorcycle is the most used transportation in Indonesia and in overseas. Sometime the engine performance that is used by the rider is not maximal with the standard. Some sectors are re-modified to increase motorcycle’s engine performance. One o part that is modified is Camshaft to change the height of valve lift. The research purpose is to acknowledge the impact of the height of valve lift, power and torque. From the experiment of dynotest can be known that standard camshaft produces maximum power about 6,9 N.m at speed 4916 Rpm and the maximum torque is 7,76N.m at speed 7969 Rpm. The modified camshaft 1 produces power about 7,9 HP at speed 8481 Rpm and maximum torque is 7,28 N.m at speed 6844 Rpm. The modified Camshaft 2 produces power about 8,1 HP at speed 8538 Rpm and the maximum torque is about 7,29 N.m at speed 6973 Rpm. The power of modified camshaft 3 is about 8,4HP at speed 8872 rpm and the torque is about 7,23 N.m at 7085 rpm. The best power is on modified camshaft 3 with 8,4 HP and the best torque is in Standard Camshaft with 7,76 N.m. ]]>
<![CDATA[PENGARUH KUAT ARUS TIG WELDING PADA MATERIAL SUS 304 TERHADAP KEKUATAN TARIK DAN STRUKTUR MIKRO ]]>
<![CDATA[Wahyu Aditya Rohman]]>;
<![CDATA[Rizal Arifin]]>;
<![CDATA[Yoyok Winardi]]>
<![CDATA[ KOMPUTEK Vol 5, No 2 (2021): Oktober ]]>
Publisher : <![CDATA[Universitas Muhammadiyah Ponorogo ]]>
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DOI: 10.24269/jkt.v5i2.822
<![CDATA[GTAW welding (gas tungsten arc welding) or commonly called TIG (tungsten inert gas) welding is welding using a flame arc produced by a fixed electrode made of tungsten. One thing that needs to be considered in welding (especially in TIG welding) is the effect of welding amperage on the mechanical properties or strength of the welded joint. PeThe tests carried out in this study were tensile tests and micro tests. Tensile tests were carried out with the aim of knowing the tensile strength of the test specimens. And the micro test is carried out aiming to see the microstructure that occurs in the weld area (HAZ). Data analysis was carried out by looking at the relationship of tensile stress, yield stress, and strain that occurred in the test specimen based on variations or parameters used during welding. Based on the analysis of the mechanical properties and microstructure of thematerial stainless steel sus 304 musing TIG welding (Tungsten Inert Gas)with a current variation of 80 A, 100 A and 120 A showed a difference that caused a comparison of the difference in the tensile strength. Welding using a current of 80 A has the highest average stress of 316.6 kN/mm2, welding using a current of 100 A has a tensile strength of 378.6 kN/mm2. While welding using a current of 120 A has the highest tensile strength of 458.3 kN/mm2. The results of this test indicate that the analysis of the mechanical properties and microstructure of TIG welding (Tungsten Inert Gas) shows a significant effect of tensile strength at a current of 120 A, so it has the highest tensile strength with an average value of 458.3 kN/mm2 ]]>
<![CDATA[MODIFIKASI MESIN PEMOTONG RUMPUT MENJADI MESIN TRACTOR PORTABLE ]]>
<![CDATA[Indra Lesmana]]>;
<![CDATA[Fadelan Fadelan]]>;
<![CDATA[Yoyok Winardi]]>
<![CDATA[ KOMPUTEK Vol 6, No 1 (2022): April ]]>
Publisher : <![CDATA[Universitas Muhammadiyah Ponorogo ]]>
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DOI: 10.24269/jkt.v6i1.1139
<![CDATA[Indonesia is a potential area for producing food such as rice, fruit and vegetables. However, in the process of processing land, the community still uses manual methods so that it takes a long time. This study aims to increase the efficiency and effectiveness of farmers in cultivating land so that farmers can maximize their work. This research resulted in a portable tractor that can be used to cultivate land in loose soil which is usually the land that is often chosen by farmers to grow various kinds of vegetables. This portable tractor uses a 2 stroke lawn mower, blades and a frame made of 20 mm iron pipe. Researchers have tested portable tractors in the field. From the testing process, it shows that the portable tractor machine is able to cultivate 19.5 m2 of loose soil with a depth of 10 cm within 1 hour of testing, so it can be concluded that the use of portable tractors is more effective and efficient than manual land cultivation. ]]>
