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TEKNIK

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Published by Universitas Diponegoro

ISSN : 08521697 EISSN : 24609919 DOI : -

Core Subject : Engineering,

Engineering

Journal yang mempublikasikan artikel-artikel ilmiah dari berbagai disiplin ilmu rekayasa/keteknikan. Artikel-artikel yang dipublikasikan di Jurnal TEKNIK meliputi hasil-hasil penelitian ilmiah asli (prioritas utama), artikel ulasan ilmiah yang bersifat baru (tidak prioritas), atau komentar atau kritik terhadap tulisan ilmiah yang dipublikasikan oleh Jurnal TEKNIK.

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Articles 10 Documents

Search results for , issue "Vol 40, No. 1 (2019): Mei 2019" : 10 Documents clear

Pengembangan Robot Humanoid Pemain Bola Otonom Afrisal, Hadha; Munadi, Munadi; Faris, Muhammad; Ardi Sumbodo, Bakhtiar Alldino
TEKNIK Vol 40, No. 1 (2019): Mei 2019
Publisher : Diponegoro University

This research aims to develop an autonomous humanoid soccer robot. The humanoid soccer robot is designed using 20 joints which are equipped with dynamixel servo motor AX-12 (upper body) and RX-24 (lower body) and is controlled by using servo controller board CM-700 (ATMega2561). The humanoid soccer robot is 44 cm in height and is equipped with a balancing system of using gyro sensor LPR530 and accelerometer KXM52-1050. In order to detect object and to navigate autonomously, the humanoid soccer robot is equipped with a CMOS camera which is controlled using CMUCAM board (LPC2016). The experiment shows that the humanoid soccer robot has ability to walk with average speed of 14.37 cm/second and is able to achieve a top speed of up to 20 cm/second. The developed humanoid soccer robot can play soccer autonomously: to locate the ball, to detect the goalpost, and to score the goal to the goalpost.

Pembuatan Digital Terrain Model (DTM) dari Light Detection and Ranging (LiDAR) menggunakan Metode Morfologi Sederhana Safi'i, Ayu Nur; Hartanto, Prayudha
TEKNIK Vol 40, No. 1 (2019): Mei 2019
Publisher : Diponegoro University

The production of Indonesian Topographic Map (RBI) in the scale ofÂ 1:5000 takes a long time, especially in the making of contour layer. Contour layer can be extracted from both Aerial Photogrammetry and LiDAR data. Nowadays, LiDAR technology is getting more reliable for DSM. From DSM can be exctracted to get DTM/DEM. DTM/ DEM generation because of its shorter processingÂ time Â and Â relativelyÂ low Â cost. Â The Â filtering Â methodÂ used Â in Â this Â research Â is Â Simple Morphological Filtering (SMRF) which input parameters are: cell size, slope, windows, elevation threshold and scaling factor. Average value of Cohenâ€™s kappa is in the range of 0.4-07 which means thatÂ the generated DTM is good. Because of the existence of null values in the generated DTM, the smoothingÂ filters have been applied. The extracted DTM then be compared to in situ data. The RMSE ranged fromÂ 0,621 to 0,930 m and LE90 about 1,025-1,605. Those RMSE and LE90 values satisfied the vertical accuracy of the 1: 5000 topographic map and graded as the second and third class in accordance to BIG Regulation No.6 of 2018 as revision of Perka BIG No.15 of 2014 focusing on Technical guidelines for Basic Map Accuracy.

Mitigasi Bencana Banjir dengan Sistem Informasi Monitoring dan Peringatan Dini Bencana menggunakan Microcontroller Arduino Berbasis IoT Danang, Danang; Suwardi, Suwardi; Hidayat, Ihsan Ardi
TEKNIK Vol 40, No. 1 (2019): Mei 2019
Publisher : Diponegoro University

The current system for mitigating floods is the doorman checking the water level in the water meter installed at the dam. When it rains very hard or other causes that might affect the flood, the doorman conveys information using the manual way by hitting kentongan to alert the surrounding community because the water level has the potential to cause flooding. This article presents the research aimed at flood disaster mitigation by building a monitoring and flood disaster early warning information system using an Internet of Things based Arduino microcontroller. A water level sensor installed at the river water gate is connected to an Arduino Uno device equipped with an SMS Gateway SIM900A. This system monitors the water level and sends information to the Kedungjati SAR Team and Ketua RT of the surrounding community around the river water gate when the water level approaches the upper limit of the flood disaster. IoT technology in this study is used to store river water level data and turn on the siren as flood warning signs when the data received reaches the flood alert level.

Penerapan Teknik UV Mapping dan Texture Painting Dalam Pembuatan Film Animasi 3D Bujang Buta Setiawan, M Iqbal; Trisnadoli, Anggy; Nugroho, Erwin Setyo
TEKNIK Vol 40, No. 1 (2019): Mei 2019
Publisher : Diponegoro University

The use of UV Mapping and Texture Painting Technique in Indonesia is a country that is rich in folklore. Bujang Buta is one of the folklore originating from the city of Kampar. Many people do not know about the existence of detailed folklore. In this study raised the Bujang Buta folklore which will be attractively packaged in the form of 3D animated films. In the 3D animation film there are many techniques to make it, one of which is the UV Mapping and Texture Painting techniq ues that make 3D animated films more colorful. Making this animated film uses the Blender 3D application as its main medium. Based on the results of testing and analysis, the 3D animated film Bujang Buta Folklore has been verified by LAMR experts (Lembaga Adat Melayu Riau). The UV Mapping and Texture Painting technique has been successfully implemented into the making of the Bujang Buta 3D animated film. And based on the results of a questionnaire that has been given to 37 general public and 6 people who fo llow the organization there are 10 moral messages in the 3D animated film Bujang Buta.

Peningkatan Kuat Tekan dan Kuat Lentur Beton Dengan Variasi Penambahan Serat Daun Nanas Yanti, Gusneli; Zainuri, Z.; Megasari, Shanti Wahyuni
TEKNIK Vol 40, No. 1 (2019): Mei 2019
Publisher : Diponegoro University

Concrete is a building material that is widely used, because this material is strong against the press, can be easily formed to suit the needs. In the other side, has a weakness against bending and has brittle properties, so that a method is needed to correct this weakness. One effort to increase the tensile strength of concrete is done by adding fiber so that it becomes a composite material, namely concrete and fiber. This research aims to improve compressive strength and flexural concrete by adding fiber with variations of 0%, 1%, 3%, 5%, and 7% on the weight of cement on the concrete quality of K-225. The concrete design uses the Department of Environment (DOE) method, with cylinder molds with a size of 150 mm x 300 mm. The number of samples in each variation were 3 specimens and a total sample of 30 specimens. Testing results show that the highest compressive strength and flexural strength in mixed variations with an additional pineapple leaf fiber of 5% with an average compressive strength of 267.00 kg / cm2 and average flexural strength of 41.61 kg / cm2.

Analisis Kualitas Isolasi Minyak Transformator 375 MVA dengan Interpretasi Rasio Roger, Segitiga Duval, Breakdown Test, dan Water Content Test Syakur, Abdul; Lazuardi, Wildan
TEKNIK Vol 40, No. 1 (2019): Mei 2019
Publisher : Diponegoro University

Transformator merupakan peralatan utama dalam pemasokan listrik dari unit pembangkitan menuju konsumen. Oleh karena itu, perlu perhatian khusus dalam pemeliharaan kinerja transformator agar tidak terjadi kerusakan pada transformator. Selama trasformator beroperasi maka minyak transformator akan mengalami pembebanan berupa beban elektris dan termal yang dapat menyebabkan timbulnya gas-gas hidrokarbon terlarut pada minyak yang berpotensi menyebabkan gagalnya minyak sebagai fungsi isolasi yang baik. Karenanya diperlukan pemantauan khusus terhadap gas-gas tersebut. Salah satu cara untuk menganalisis gas terlarut dalam minyak adalah dengan menggunakan metode Dissolved Gas Analysis (DGA). DGA akan mengekstraksi gas tersebut untuk diketahui indikasi gangguan berdasarkan hasil interpretasi data gas-gas hidrokarbon terlarut yang dilakukan. Metode ini juga mampu memprediksi kerusakan jangka panjang, sehingga kerusakan pada transformator dapat dicegah. Hasil analisis DGA pada transformator menghasilkan indikasi berupa Discharge of thermal fault yang didapat dari hasil intrepetasi data menggunakan metode Rasio Roger dan Segitiga Duval. Selain itu, hasil pengujian breakdown voltage menunjukkan kondisi minyak yang masih baik yaitu kekuatan dielektrik > 50 kv dan pengukuran water content juga masih baik yaitu sebesar < 25 ppm.

Pengembangan Perangkat Lunak Untuk Gerbang Tol Otomatis Yang Ramah Lingkungan Berbasis RFID Dengan Notifikasi Pembayaran Tanpa Kertas Syafei, Wahyul Amien; Listyono, A. F.; Prayogi, A. S.; Darjat, Darjat; Hidayatno, Achmad
TEKNIK Vol 40, No. 1 (2019): Mei 2019
Publisher : Diponegoro University

Penelitian ini bertujuan untuk mengembangkan purwarupa sistem gardu tol yang ramah lingkungan. Sistem ini menggunakan teknologi RFID untuk mengidentifikasi pengguna sebagai pengganti kartu debit. Kendaraan diidentifikasi oleh sistem ketika melewati gardu tol. Pembayaran dilakukan tanpa perlu memberhentikan kendaraan. Notifikasi pembayaran dikirim melalui SMS secara otomatis oleh sistem ke telepon genggam pengguna. Purwarupa ini dirancang untuk mengeliminasi antrean dan sampah kertas di gardu tol sehingga menghemat waktu, bahan bakar, biaya penyediaan kertas dan tinta. Paper ini menyajikan pengembangan perangkat lunak dari sistem gardu tol otomatis ramah lingkungan yang diusulkan.

Peningkatan Kecepatan Proses dan Mutu Minyak Bekatul melalui Proses Ekstraksi Berbantukan Ultrasonik Djaeni, Mohamad; Listyadevi, Yuniar Luthfia
TEKNIK Vol 40, No. 1 (2019): Mei 2019
Publisher : Diponegoro University

Rice bran oil is one of the oils that has been widely used in the chemical, pharmaceutical and food industries considering the high essential content such as antioxidants, vitamins that are good for the body. Extraction of ultrasonic assisted bran oil is one of many method used to reduce extraction time. The purpose of this study was to examine the effect of extraction methods on mass transfer of bran oil, antioxidant quality, and the quality of bran oil during the extraction process at the temperature, extraction time, and the right solvent ratio. Mass transfer of bran oil was evaluated based on the effect of various temperatures, extraction times, and solvent ratios to predict the right tim e to get a lot of bran oil. Chemical quality (antioxidant content of Î±-tocopherol) and physical quality (oil color) of bran oil were studied so that they were able to predict temperature, extraction time, and relatively good solvent ratio. The results showed that yield increased with increasing temperature and extraction time. However the antioxidant value of Î±-tocopherol will decrease with increasing temperature, extraction time and solvent. The recommended operating conditions for obtaining yields and antioxidant values at 40ÂºC, material to solvent ratio 1: 5 and extraction time for 51 minutes.

Peningkatan Kinerja Keputusan Pembelian melalui Penilaian Kesadaran Merek, Asosiasi Merek, Loyalitas Merek dan Persepsi Kualitas menggunakan Metode Regresi Ganda: Studi Kasus Pembelian Truk di PT AIIS Susanto, Novie; Rinawati, Dyah Ika; Ramadhani, Fery
TEKNIK Vol 40, No. 1 (2019): Mei 2019
Publisher : Diponegoro University

Sales data and market share of a truck product called ILT in PT AIIS continues to decline during period 2014-2016. Based on these findings, this research examines how sales and market share of the truck could be improved. This research aims to examine the influence of brand awareness, brand association, perceived quality, and brand loyalty to the purchasing decision of ILT in PT. AIIS. The analysis technique uses multiple regression analysis. From the research result, it is found that only the brand awareness and perceived quality variables that positively and significantly influence the purchasing decision of ILT where brand awareness is the dominant factor that influences purchasing decisions. Adjusted R Square value of 0,521 indicates that 52.1% of variation of purchasing decision can be explained by four independent variables in regression equation while the rest equal to 47,9% explained by other variables which were not examined in this research.

Pengaruh Perlakuan Panas Terhadap Struktur Mikro, Kekerasan dan Ketahanan Oksidasi Suhu Tinggi Pada Baja Tahan Karat Martensitik 13Cr3Mo3Ni-Cor Anwar, Moch Syaiful; Yulianto, Eric Jonathan; Chandra, Septian Adi; Hakim, Rahma Nisa; Hastuty, Sri; Mabruri, Efendi
TEKNIK Vol 40, No. 1 (2019): Mei 2019
Publisher : Diponegoro University

This paper reports the effect of heat treatment on microstructure, hardness and high-temperature oxidation resistance of martensitic stainless steels13Cr3Mo3Ni-cast. The aim of this reseach is to increase quality of the steel through heat treatment process on microstructure, hardness and high-temperature oxidation resistance. Â The steels samples were prepared by a process sequence ofinduction melting, casting, austenitisazed, single tempered and double tempered. Austenitization process of 1020Â°C was conducted until 4 hours and quench in water. Then, tempering process of 650Â°C was carried out until 2 hours and cooled in the air and then double tempering process of 550Â°C was carried out until 2 hours and air cooled. The double tempered steels were subjected to microstructure, hardness and high-temperature oxidation test of 400 â€“ 700 Â°C. Then, the experimental results of double tempered steel were compared with control, austenitisazed and single tempered steels. The double tempered treatment revealed a positive effect on the increament properties of martensitic stainless steelÂ 13Cr3Mo3Ni-castÂ Â Â in the high-temperature environment.

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