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<![CDATA[Analisis Perancangan dan Pengujian Alat Cuci Tangan Otomasis Berbasis Energi Surya 100 WP ]]>
<![CDATA[Heri Suripto]]>;
<![CDATA[Unggul Satria Jati]]>
<![CDATA[ Accurate: Journal of Mechanical Engineering and Science Vol. 2 No. 1 (2021): April 2021 ]]>
Publisher : <![CDATA[Politeknik Negeri Cilacap ]]>
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DOI: 10.35970/accurate.v2i1.580
<![CDATA[The outbreak of the Covid 19 disease has caused disaster to the people. The emergence of this disease’s outbreak encourages the importance clean lifestyle. In order not to easily contracted the Covid 19 disease, it is necessary to make automatic handwashing equipment to prevent people from having direct contact with the equipment. In this research the design and testing of an automatic handwashing equipment based on solar energy were carried out. The purpose of this research was to determine the capacity of the sun's intensity to provide electrical energy through the solar module to the battery which will be used to supply electrical energy of solar energy-based automatic handwashing equipment. The method used in this research was the Palh and Beitz method approach and the experimental method which started with the design, material selection, assembly and testing. The design produced equipment specifications for a solar module framework with a height of 100 cm, a width of 80 cm, a length of 100 cm, while for a sink frame with a height of 90 cm, a width of 45 cm, and a length of 55 cm. The test was carried out in three phases, phase one was testing the module input power. The module input power in the test produced a power of 2461 Watts with a solar radiation intensity of 3237 W / m2. The peak intensity and power of the sun was shown at 13.00 WIB. The second phase of the test was the length of time needed to charge the battery took 2.5 hours. The third phase of the test was the power needed for sensors and pumps of 358 Watts. The power requirement of 358 Watts could be supplied by a 100 Wp solar panel, since the power released from a 100 Wp solar panel is 400 Watts.]]>
<![CDATA[Rancang Bangun Coffee Roaster Machine Kapasitas 1 Kg dengan Menggunakan Pengatur Suhu dan Waktu Termostat Rex-C 100 ]]>
<![CDATA[Dian Prabowo]]>;
<![CDATA[Unggul Satria Jati]]>;
<![CDATA[Windra Jaya]]>
<![CDATA[ Accurate: Journal of Mechanical Engineering and Science Vol 1, No 1 (2020): April, 2020 ]]>
Publisher : <![CDATA[Politeknik Negeri Cilacap ]]>
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DOI: 10.35970/accurate.v1i1.171
<![CDATA[Coffee Roaster Machine with Temperature Controller and Timer Capacity 1 Kg is designed to optimize heat from the heater and has a cheaper price than the machines on the market. The goal in the design of Coffee Roasting Machine with Temperature and Timer is to design, manufacture, perform function tests and test the results of the machine. In the manufacture of this machine the author uses the design method approach of James H. Earle, image software using Solidworks 2017 and working drawings using ISO standards. From the methods that the authors do, obtained the results of the evaluation of the concept of draft decisions are Source pemerers using a DC electric motor with a 12 volt voltage, heat source using a heater with 1500 watts of power, and the total cost used to make this machine of Rp. 4.296.912,32.]]>
<![CDATA[Analisa Kerusakan Transmisi Otomatis dengan Metode Failures Mode and Effects Analysis (FMEA) dan Logic Tree Anaysis (LTA) ]]>
<![CDATA[Jenal Sodikin]]>;
<![CDATA[Unggul Satria Jati]]>
<![CDATA[ Accurate: Journal of Mechanical Engineering and Science Vol 3, No 1 (2022): April 2022 ]]>
Publisher : <![CDATA[Politeknik Negeri Cilacap ]]>
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DOI: 10.35970/accurate.v3i1.1273
<![CDATA[Sistem pemindah tenaga merupakan bagian yang tidak terpisahkan dari sebuah unit kendaraan, komponen ini berfungsi sebagai penerus daya dari mesin, memperbesar momen yang dihasilkan mesin sesuai kebutuhan beban dan kondisi jalan serta membalikan putaran. Jenis Seiring usia pakai dari kendaraan maka transmisi yang digunakannya akan mengalami kerusakan atau bahkan gagal fungsi, sebagian besar transmisi otomatis mulai bermasalah setelah kendaraan digunakan diatas 100.000 km atau pada kendaraan yang tidak digunakan sesuai dengan ketentuan serta tidak melaksanakan prosedur perawatan dengan baik maka kerusakan transmisi otomatis bisa datang lebih cepat. Berdasarkan penerapan metode Failures Mode Effects Analysis (FMEA) yang digunakan untuk mengevaluasi komponen pada suatu sistem dengan cara meneliti potensi model kegagalannya untuk menentukan dampak yang akan terjadi pada komponen atau sistem kerja ditemukan nilai Risk Piority Number (RPN) yang paling tinggi terdapat pada komponen Seal Piston Matic Sebesar 450, Multiple Clutch/Clutch Pack 360, Selenoid Valve 324. Setiap potensi dari model kegagalan diklasifikasikan berdasarkan dampak yang dapat ditimbulkan pada keberhasilan sistem tersebut ataupun pada keselamatan pengguna dengan pembagian katagori menggunakan Logic Tree Analysis (LTA) dengan hasil sebagian besar komponen transmisi otomatis termasuk dalam kerusakan tipe B (Outage Poblem) dimana komponen tersebut mengakibatkan kegagalan pada seluruh atau sebagian sistem. Berdasarkan nilai RPN maka pemeliharaan yang tepat adalah Pemeliharaan Prediktif.]]>
<![CDATA[Pengaruh Proses Normalizing Terhadap Kekuatan Tarik Sambungan Las pada Logam Tidak Sejenis ]]>
<![CDATA[Unggul Satria Jati Unggul]]>;
<![CDATA[Dian Prabowo]]>;
<![CDATA[Anjar Kustiawan]]>
<![CDATA[ Aptek Jurnal Apliksai Teknologi (APTEK): Volume 13, No. 02, Juli 2021 ]]>
Publisher : <![CDATA[Fakultas Teknik Universitas Pasir Pengaraian ]]>
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DOI: 10.30606/aptek.v13i2.815
<![CDATA[Pengelasan tidak sejenis atau dissimilar metals merupakan kebutuhan yang penting bagi dunia industri. Jenis pengelasan tersebut juga banyak digunakan untuk sambungan-sambungan yang mempunyai keguanaan khusus. Penelitian ini membahas mengenai penyambungan material yang tidak sejenis dengan menambahkan proses normalising, dengan tujuan untuk mendapatkan hasil sambungan pengelasan yang terbaik pada sifat materialnya. Material yang digunakan adalah baja tahan karat AISI 304 dan baja karbon A36 dilas menggunakan las Gas Metals Arc Welding (GMAW) posisi mendatar dengan pengaturan tegangan 20 volt, arus 100 Amper. dan filler yang digunakan adalah ER308 dengan variasi normalising 4000C, 5000C dan 6000C. Pengujian yang dilakukan pada penelitian ini adalah uji tarik. Setelah dilakukan 12 kali percobaan spesimen maka didapatkan hasil bahwa proses normalising pada sambungan las GMAW dengan material tidak sejenis mempunyai pengaruh yang signifikan dimana spesimen kekuatan tariknya lebih baik dibandingkan tidak mendapatkan perlakuan. Pengaruh tersebut teramati pada spesimen dengan proses normalising 6000C yang menghasilkan kekuatan tarik paling besar yaitu 500,12 Mpa dan nilai regangan tarik yaitu 15,69%. Sedangkan pada spesimen tanpa proses normalising menghasilkan kekuatan tarik sebesar 471,08 Mpa dan regangan tarik sebesar 11,99 %.]]>
<![CDATA[Analisis Kinematik Singularty Pada Manipulator 7 DOF Dengan Software Simulasi ROBOAnalyzer ]]>
<![CDATA[Nur Akhlis Sarihidaya Laksana]]>;
<![CDATA[Radhi Ariawan]]>;
<![CDATA[Unggul Satria Jati]]>;
<![CDATA[Jenal Sodikin]]>;
<![CDATA[Ulikaryani]]>
<![CDATA[ Infotekmesin Vol 13 No 2 (2022): Infotekmesin: Juli, 2022 ]]>
Publisher : <![CDATA[P3M Politeknik Negeri Cilacap ]]>
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DOI: 10.35970/infotekmesin.v13i2.1538
<![CDATA[Studies related to manipulators are still being carried out, along with the times and needs. Utilization in manufacturing and fabrication has led to the development of many manipulators. Smooth, fast, and accurate movement continue to be developed. In the case of the multi manipulator, 7 DOF (Degree of Freedom) is a type of manipulator that has special features in terms of joints. Inverse kinematic is a parameter used to control the orientation and movement of the manipulator. 7 DOF has three singularity wrist, elbow, and shoulder. In the simulation, each singularity produces an inverse kinematic matrix which is used to control the movement of the manipulator. The method used is to determine the angle of motion of the joint (continues joint angel) with simulation to produce calculations that are fast, precise, accurate, and stable. The target of each joint with the theta value that has been determined by the singularity was successfully carried out with an error of 0%.]]>
<![CDATA[Analisa Kerusakan Transmisi Otomatis dengan Metode Failures Mode and Effects Analysis (FMEA) dan Logic Tree Anaysis (LTA) ]]>
<![CDATA[Jenal Sodikin]]>;
<![CDATA[Unggul Satria Jati]]>
<![CDATA[ Accurate: Journal of Mechanical Engineering and Science Vol. 3 No. 1 (2022): April 2022 ]]>
Publisher : <![CDATA[Politeknik Negeri Cilacap ]]>
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DOI: 10.35970/accurate.v3i1.1510
<![CDATA[The power transfer system is an inseparable part of a vehicle unit, this component functions as a power source from the engine, increasing the moment generated by the engine according to the needs of the load and road conditions and reversing the rotation. Type As the age of the vehicle, the transmission it uses will be damaged or even fail to function, most automatic transmissions start having problems after the vehicle is used above 100,000 km or on vehicles that are not used in accordance with the provisions and do not carry out maintenance procedures properly, the automatic transmission is damaged. could come sooner. Based on the implementation of the Failures Mode Effects Analysis (FMEA) method which is used to evaluate components in a system by examining the potential failure model to determine the impact that will occur on the component or work system, it is found that the highest Risk Piority Number (RPN) is found in the Seal component. Piston Matic 450, Multiple Clutch/Clutch Pack 360, Selenoid Valve 324. Each potential failure model is classified based on the impact it can have on the success of the system or on user safety by dividing the categories using Logic Tree Analysis (LTA) with the results of most components automatic transmission is included in the type B failure (Outage Problem) where the component causes failure of all or part of the system. Based on the RPN value, the right maintenance is Predictive Maintenance.]]>
<![CDATA[Rancang Bangun Rangka dan Penggerak Mesin FDM Berbasis Arduino Tipe XZ-Head ]]>
<![CDATA[Radhi Ariawan]]>;
<![CDATA[Nur Akhlis Sarihidaya Laksana]]>;
<![CDATA[Unggul Satria Jati]]>;
<![CDATA[Roy Aries Permana Tarigan]]>
<![CDATA[ Infotekmesin Vol 14 No 1 (2023): Infotekmesin: Januari, 2023 ]]>
Publisher : <![CDATA[P3M Politeknik Negeri Cilacap ]]>
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DOI: 10.35970/infotekmesin.v14i1.1741
<![CDATA[FDM is an AM method that is currently being developed due to the flexibility of the object geometry that can be formed. This study aims to design the frame and drive of the XZ Head type FDM engine. Stress simulation was carried out to determine the safety factor in the frameXZ design. Lead screw parameters in the form of torque, shear stress, axial stress, and critical load were calculated to determine the torque requirement of the driving motor. The value of the linear axis of the stepper motor was calibrated to determine the dimensions of the printed output. Based on the simulation, the dynamic and static stresses on the XZ frame were 1.9 MPa and 2 MPa. The yield strength was 55 MPa with a safety factor of 28. The results of the calculation of the lead screw torque (TR) and (TL) were 18.27 N.mm and 6.60 N.mm. The calculated nominal shear stress of the screw () was 0.43 N/mm2, the axial loading stress () was -0.62 N/mm2, and the critical load (Wcr) was 9986.41 N. The difference in dimensions of the measurement results in the X and Z planes was 0.22 and 0.17 mm larger than the target dimensions of 20 mm.]]>
<![CDATA[Karakteristik Struktur Kristal In2Se3 Hasil Preparasi Dengan Metode Bridgman ]]>
<![CDATA[Ulikaryani Ulikaryani]]>;
<![CDATA[Jenal Sodikin]]>;
<![CDATA[Nur Akhlis Sarihidaya Laksana]]>;
<![CDATA[Unggul Satria Jati]]>;
<![CDATA[Ari Kristiningsih]]>
<![CDATA[ Infotekmesin Vol 14 No 1 (2023): Infotekmesin: Januari, 2023 ]]>
Publisher : <![CDATA[P3M Politeknik Negeri Cilacap ]]>
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DOI: 10.35970/infotekmesin.v14i1.1753
<![CDATA[Apart from using silicon material, thin-layer solar cells can be made from various types of semiconductor materials, such as a combination of groups III and VI. In solar cell applications, these materials are usually used as n-type coatings. This study not only aimed to determine the crystal structure and the effect of annealing temperature on the crystal lattice parameters but also to determine the chemical composition and surface morphological structure of the crystals formed from the preparation. The crystal growth process was carried out using the Bridgman method with different heating patterns. The temperature in both annealing temperatures is 200oC and 250oC. The physical properties of the prepared In2Se3 crystals were characterized using XRD, SEM, and EDAX. XRD Characterization was used to determine the crystal structure, while SEM and EDAX characterization was used to determine the surface morphology and chemical composition of the crystals. The result of the XRD characterization showed that the formed In2Se3 crystals were polycrystals with a hexagonal structure. Based on the diffractogram obtained, the In2Se3 crystalline heating 1 has better quality. EDAX analysis showed that the In2Se3 crystals were composed of elements of In and Se with a mole ratio of 2:9, while the SEM characterization showed that the color of the surface morphology of the In2Se3 crystals was not homogeneous.]]>
<![CDATA[Pengaruh Variasi Holding Time pada Proses Pack Carburizing dengan Arang Tempurung Kelapa Barium Carbonat Terhadap Sifat Fisik dan Mekanik Baja ST 42 ]]>
<![CDATA[mastur]]>;
<![CDATA[Warso]]>;
<![CDATA[Unggul Satria Jati]]>
<![CDATA[ Accurate: Journal of Mechanical Engineering and Science Vol. 4 No. 1 (2023): April 2023 ]]>
Publisher : <![CDATA[Politeknik Negeri Cilacap ]]>
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DOI: 10.35970/accurate.v4i1.2014
<![CDATA[Iron-based production machine components are chosen to support productivity. Steel is a metal material that is easily found on the market, but it has not fulfilled the desires of consumers in the market. This steel can be hardened by heat treatment (heat treatment). The surface treatment process is carried out to obtain the desired hardness, this can be done by increasing the carbon (C) element in the steel material, the carbon content in the standard steel structure is 0.3% - 0.59% the carbon content will have an effect. on hardness, one way to increase the element carbon (C) in steel and increase the hardness on its surface is by carburizing. This research will examine the hardness level of low carbon steel by using a pack carburizing process with different times of 2; 2.5 and 3 hours and the quenching process with pure water media.. The purpose of this study was to determine the effect of holding time on the pack carburizing process with coconut shell charcoal - barium carbonat on the hardness value of ST 42 steel. Besides that for effect of holding time on the pack carburizing process with coconut shell charcoal on the microstructure. There are differences in the surface hardness and microstructure values before and after the carburizing process. Where the highest hardness value occurs at a holding time of 3 hours with a hardness value of 872.9 HVN or an increase of 382% of the raw material and is supported by the dominance of the martensite phase which is more and more evenly distributed. Compared to the ST 42 steel raw material before the pack carburizing process was carried out, the hardness value was 174.8 HVN. A dominant microstructure consisting of a ferrite phase and a little bit of pearlite dominance.]]>
