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Politeknosain
Published by Politeknik Pratama Mulia Surakarta
ISSN : 18296181     EISSN : 27979148     DOI : -
Core Subject : Science, Education, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering
Politeknosains diterbitkan oleh Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Politeknik Pratama Mulia Surakarta dalam membantu para akademisi, peneliti dan praktisi untuk menyebarkan hasil penelitiannya. Politeknosains adalah jurnal nasional, yang didedikasikan untuk publikasi hasil penelitian yang berkualitas dalam bidang Teknik Elektronika, Teknik Komputer dan Informatika, Teknik Mesin dan Mesin Otomotif, namun tak terbatas secara implisit serta bebas biaya dalam proses submisi. Politeknosains menerbitkan paper secara berkala 2 kali setahun yaitu pada bulan Maret dan September.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 132 Documents
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Ketangguhan Retak Komposit Epoxy - Serbuk Cangkang Kerang Yohanes Suyoko; Burhan Ibnu Mubtadi
Politeknosains Vol 19 No Edisi Khusus (2020): Jurnal Politeknosains Volume 19 Edisi Khusus - Juli 2020
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Politeknik Pratama Mulia Surakarta

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Abstract

Composite is a new material resulting from a combination of two or more materials. Each of composite materials has advantages that will reduce or even eliminate the deficiencies of other materials. Fillers are given to strengthen the particle shaped matrix. This study aims to determine the effect of the addition of scallop powder in the epoxy matrix to the fracture toughness of the epoxy-scallop powder composite. The composite matrix is Eposchon products of PT. Justus Kimia Raya and its reinforcing material are scallop powder with a size of 40 mesh passes. The conventional method is used to make composites, where the scallop powder is mixed in epoxy resin with variations in weight fraction of 0%, 5%, 10% and 15%. Each composition was mixed with a mechanical stirrer for 15 minutes at 500 rpm and a temperature of 40 ° C. At the last minute the stirrer rotation is lowered at 100 rpm while adding a hardener (catalyst). The next process is pouring the mold followed by curing in an oven at 90 ° C for 2 hours. The specimen is then tested for fracture toughness according to ASTM D5045 standard. The test results showed that there was an increase in fracture toughness in all additional weight fractions of the shell powder. The biggest increase occurred in the addition of 5% by weight fraction, where the fracture toughness increased by 178.38% (1.03 MPa.m1/2).
Pengaruh Suhu Udara Panas Terhadap Bahan Bakar Mesin Bensin Kurniawan Joko Nugroho; Warsito
Politeknosains Vol 19 No Edisi Khusus (2020): Jurnal Politeknosains Volume 19 Edisi Khusus - Juli 2020
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Politeknik Pratama Mulia Surakarta

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Abstract

The process of combustion of fuel in the cylinder is influenced by temperature, mixture density, composition, and turbulence that exists in the mixture. When the temperature of the fuel mixture with the air rises, the easier it is to mix the fuel with the air to catch fire. The research was conducted at the Mesin Otomotif Politeknik Pratama Mulia Surakarta Laboratory in the year 2020. From the average observation experiments using fuel, the following results were obtained: temperature 30-35 ℃, engine speed (RPM), 1500 rpm = 63 ml, 2000 rpm = 80 ml, temperature 45-50 ℃, then the engine speed (RPM) 1500 rpm = 56 ml, 2000 rpm = 70 ml. From the test it can be concluded that the lower the inlet air temperature and the higher the engine speed, the fuel consumption will be different, this is because every increase in the rotation looks fuel consumption also rises.
Pengaruh Temperatur Udara Dingin Terhadap Konsumsi Bahan Bakar pada Gasoline Engine Basmal; Sugiyarta
Politeknosains Vol 19 No Edisi Khusus (2020): Jurnal Politeknosains Volume 19 Edisi Khusus - Juli 2020
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Politeknik Pratama Mulia Surakarta

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Abstract

Gasoline engines are still being developed by motor vehicle manufacturers, both for small vehicles, namely motorbikes and medium-sized vehicles, namely cars with cylinder volumes below 2000 cc. The development of the gasoline engine continues, especially in the fuel system. Regarding the fuel system for production in 2020, it almost uses an injection system that has experienced improvements from the previous generation. The use of this system cannot be separated from the performance of the Electronic Control Unit (ECU) for optimizing the gasoline engine. The change in temperature of the air entering the combustion chamber which tends to be cold will certainly affect fuel consumption. The purpose of this study was to determine the effect of cold air on fuel consumption. The research was conducted at the Automotive Machinery Laboratory of the Pratama Mulia Surakarta Polytechnic in 2020. From an average of 5 experiments using pertalite type fuel in the Toyota Rush engine, the following results were obtained: intake air temperature was 20-250C, at engine speed 1000 rpm = 56 ml, 1500 rpm = 76 ml, 2000 rpm = 90 ml, air temperature 30-320C at engine speed 1000 rpm = 46 ml rpm, 1500 rpm = 63 ml, 2000 rpm = 80 ml. The intake air temperature tends to be low, so the fuel consumption will be less.
Pengukuran Getaran Aliran Material Lahar Dingin Memanfaatkan Jaringan Sensor Nirkabel dan Uji Statistik Hasil Percobaan Agung Priyanto; Landung Sudarmana; Harjono
Politeknosains Vol 19 No 1 (2020): Jurnal Politeknosains Volume 19 Nomor 1 - Maret 2020
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Politeknik Pratama Mulia Surakarta

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Abstract

Lahar events have been major threats following volcano eruptions. The absence of power grid and communication line in remote areas near the volcano, where the lahar events initiate, makes the sensors deployment a difficult thing to do. Sensors, like cameras and other sensing methods, usually can only be deployed in areas where power grid presents, that is, near residential areas, far enough from where lahar event initiates. Thus, the prediction of lahar event takes longer time to make, because of delayed information received by the lahar event mitigation center, and this may be too late. Vibration sensor utilizing an accelerometer integrated with autonomous, power efficient wireless sensor network is a conclusion for the need. The statistical tests for the laboratorium scale experiment results have been made. A validated method of data analysis that has been chosen fits the data pattern. Furthermore, a significant information that can be used as a parameter for the lahar event early warning system can be achieved.
Penerapan Metode Arima Box-Jenkins Untuk Peramalan Konsumsi Listrik Titik Rahmawati; Landung Sudarmana; Agung Priyanto
Politeknosains Vol 19 No 1 (2020): Jurnal Politeknosains Volume 19 Nomor 1 - Maret 2020
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Politeknik Pratama Mulia Surakarta

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Abstract

Electric energy consumption in Indonesia is increasing following the growth of national economy. The rise of activities that need electric energy must be well managed and anticipated. Thus, forecasting of electricity demand in the near future should be considered. One of forecasting methods that has often been used is ARIMA (Autoregressive Integrated Moving Average) time series. This paper aims to explain how to use ARIMA method to forecast electricity energy consumption in a particular area along with its accuracy. The data source supplied to the method is secondary data from PLN (Perusahaan Listrik Negara). For period of 5 years of forecasting, the result shows that the best model of ARIMA method is ARIMA (0,1,0). MAPE (Mean Absolute Percentage Error) value of the model is 0.33%, meaning that the accuracy will be 99.67%.
Sistem Pengendali Buka Tutup Atap dan Blower Otomatis untuk Jemuran Menggunakan Mikrokontroler Arduino Berbasis Android Supriyana Nugroho; Ibnu Mas’ud Himawan; Cicilia Puji Rahayu
Politeknosains Vol 19 No 1 (2020): Jurnal Politeknosains Volume 19 Nomor 1 - Maret 2020
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Politeknik Pratama Mulia Surakarta

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Abstract

Automatic control systems in the field of science and technology lately are developing rapidly. With the progress in the field of science and technology produce new innovations that develop towards better. Open and close roof and automatic blower system This system uses two inputs namely rain sensor and HC06 Bluetooth module as well as four outputs namely LCD output, servo motor, relay, and fan blower. Rain sensor is used to detect the presence of water spots, this sensor works with the principle of connecting between pcb lines that are exposed to water and then emits a signal that will be read by an analog port on Arduino Uno. The HC06 Bluetooth module is used to intermediate serial data from an Android smartphone to the Arduino Uno RX TX port. LCD to display the working condition of the device. Servo motors are used to open or close the roof. The relay is used as a bridge between the arduino uno and the fan blower, while the fan blower is used to dry the clothesline when the roof is closed.
Studi Pengendalian Motor Listrik di Industri Sebagai Upaya Peningkatan Kualitas Materi Dan Strategi Pembelajaran Muhammad Alhan; Yaya Finayani
Politeknosains Vol 19 No 1 (2020): Jurnal Politeknosains Volume 19 Nomor 1 - Maret 2020
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Politeknik Pratama Mulia Surakarta

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Abstract

The rapid development of industrial automation technology one technique for controlling the electric motor is very difficult to anticipate by JTE Politama, this will require material adjustments and learning strategies with the development of industrial automation technology to produce graduates according to the needs and the industry can compete in the global world. It required a partnership with the industry to determine the development of industrial automation technology, but it needs to be a partnership with universities that have higher quality and more complete laboratory so it can adopt the course material, equipment / lab module. The result of the adoption of subjects related to electric motors and control techniques organized into 9 RPKPS and teaching materials as well as rewinding machine prototype.
Purwarupa Sistem Keamanan Locker Laboratorium Berbasis Raspberry Pi Biometrik dan RFID Yustina Tritularsih; Yohanes Sugiarto; Hizkia Urianto
Politeknosains Vol 19 No 1 (2020): Jurnal Politeknosains Volume 19 Nomor 1 - Maret 2020
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Politeknik Pratama Mulia Surakarta

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Abstract

Laboratory is a very crucial place in doing practice learning. Generally, there are high value research equipment and component. It needs completing with electronic security system to improve the security system of laboratory locker user. This research will make a prototype of laboratory locker security system based on Raspberry pi biometrik and RFID. This system combines the fingerprint recognition system with fingerprint sensor R307 and the method of id matching by using RFID Card MIFARE RC522. Raspberry Pi is used as the main controller connected to database MySQL. Integration process with database is successfully done by using Python language as the device connector with database. Data of id tag from the reading result of RFID reader and scanning from sensor of fingerprint on device are successfully delivered to database and sucessfully receive reply response in the form of the user identity which is shown on LCD screen. The process takes less than five seconds as long as the device has been connected with Wifi network. The security lock system of locker box is also equipped with logger data therefore it will make investigation easy if the loss on laboratory equipment happens.
Website Destinasi Wisata Di Kabupaten Karanganyar dengan Wordpress Devi Rizki Zahrahwani
Politeknosains Vol 19 No 1 (2020): Jurnal Politeknosains Volume 19 Nomor 1 - Maret 2020
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Politeknik Pratama Mulia Surakarta

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Abstract

Tourism websites in Karanganyar Regency are used as a tool to deliver information and new tourism promotion media in Karanganyar Regency to people who want to know new and populer toursin Karanganyar Regency. The website is one form of regional tourism promotion in Karanganyar Regency, in order to attract tourist to visit the Karanganyar Regency. This website is useful as an information and as a place for tourism promotion in Karanganyar Regency. Themore tourist visiting, the income of surrounding community and regional income will increase. Methods of research carried out direct observation, interview with the government and through mass media related to the issue raised. Touris website in Karanganyar Regency are made using WordPress and with MySQL database and the time of research began in April 2019.
Visual Dashboard Program Penjualan pada Usaha Kecil Menengah (UKM ) Mutiara Surakarta dengan Visual Basic dan Crystal Report Didik Warasto; Martono
Politeknosains Vol 19 No 1 (2020): Jurnal Politeknosains Volume 19 Nomor 1 - Maret 2020
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Politeknik Pratama Mulia Surakarta

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Abstract

This paper discusses improving the sales system that has been used by UKM Mutiara Surakarta. Using the field study method. The field study is carried out by researching the company directly. This is done to obtain data and information directly with the problem under study. The field study is carried out by studying the information system developed by UKM Mutiara, as well as collecting data about information systems implemented by UKM UKM. The result is an inventory program designed using Visual Basic 6.0. With the creation of this program, the processing of inventory information systems implemented by UKM Mutiara Surakarta can be faster, more accurate, easier and obtain updates, especially in the inventory system.

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