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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 9 Documents

Search results for , issue "vol 40, no 1 (2019)" : 9 Documents clear

Pengembangan Robot Humanoid Pemain Bola Otonom Hadha Afrisal; Munadi Munadi; Muhammad Faris; Bakhtiar Alldino Ardi Sumbodo
TEKNIK Vol 40, No 1 (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 Ayu Nur Safi'i; Prayudha Hartanto
TEKNIK Vol 40, No 1 (2019)
Publisher : Diponegoro University

Pembuatan Peta RBI skala 1:5.000 membutuhkan waktu yang lama, khususnya untuk pembuatan layer kontur. Layer kontur bisa didapatkan dari data hasil ekstraksi foto udara dan data Light Detection and Ranging (LIDAR). Sekarang ini, teknologi LiDAR lebih diandalkan untuk membuat Data Surface Model (DSM). Dari DSM dilakukan proses ekstrasi data untuk mendapatkan data Digital Terrain Model (DTM) atau Digital Elevation Model (DEM) yang prosesnya lebih cepat dan membutuhkan biaya yang relatif rendah. Metode filtering yang digunakan adalah metode Simple Morphological Filtering (SMRF) dengan memasukkan nilai parameter cell size, slope, windows, elevation threshold dan scalling factor. Hasil Cohen’s kappa rata-rata menunjukkan indikator DTM dalam kondisi baik, yang artinya dengan menggunakan metode SMRF, nilai kappa berada diantara 0,4-0,7. Smoothing filter dilakukan untuk menghilangkan sel kosong/ sel tanpa data. DTM yang dihasilkan dibandingkan dengan data validasi lapangan. Root Mean Square Error (RMSE) yang diperoleh berkisar antara 0,621-0,930 dan nilai Linear Error 90% (LE90) yang diperoleh berkisar antara 1,025-1,605. Hasil penelitian ini menunjukkan nilai RMSE dan LE90 tersebut memenuhi ketelitian vertikal peta skala 1: 5.000 dan masuk dalam kelas 2 dan 3 sesuai Peraturan BIG No.6 Tahun 2018 mengenai perubahan atas Perka BIG No.15 Tahun 2014 tentang Pedoman Teknis Ketelitian Peta Dasar

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

Sistem yang digunakan saat ini untuk mitigasi benca banjir adalah penjaga pintu mengecek ketinggian air pada meter air yang terpasang di bendungan. Ketika hujan turun sangat deras atau sebab lain yang mungkin berdampak banjir, petugas menyampaikan informasi menggunakan cara manual yaitu memukul kentongan untuk memberi peringatan kepada masyarakat sekitar untuk waspada karena ketinggian air berpotensi menimbulkan banjir. Artikel ini menyajikan hasil penelitian yang bertujuan untuk mitigasi bencana banjir dengan membangun sistem informasi monitoring dan peringatan dini bencana banjir menggunakan microcontroller Arduino berbasis Internet of Things. Sensor water level dipasang pada gerbang air sungai dihubungkan dengan perangkat Arduino Uno yang dilengkapi dengan SMS Gateway SIM900A. Sistem ini memantau ketinggian air tanpa lelah dan mengirimkan informasi kepada Tim SAR Desa Kedungjati dan Ketua RT di lingkungan sekitar gerbang air sungai ketika ketinggian air mendekati batas level atas bencana banjir. Teknologi IoT dalam penelitian ini digunakan untuk menyimpan data ketinggian air sungai dan menghidupkan sirine sebagai tanda peringatan bencana banjir ketika data yang diterima mencapai level awas banjir.

Penerapan Teknik UV Mapping dan Texture Painting Dalam Pembuatan Film Animasi 3D Bujang Buta M Iqbal Setiawan; Anggy Trisnadoli; Erwin Setyo Nugroho
TEKNIK Vol 40, No 1 (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 Gusneli Yanti; Z. Zainuri; Shanti Wahyuni Megasari
TEKNIK Vol 40, No 1 (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 Abdul Syakur; Wildan Lazuardi
TEKNIK Vol 40, No 1 (2019)
Publisher : Diponegoro University

Transformers is a vital instrument to distribute electricity from the power plant to the consumer. Therefore, it needs special maintenance to the performance of the transformer in order to avoid the damage. During the operation, the transformer oil will affect some thermal loading and electrical loading. Due to the load accumulation, it can cause dissolved hydrocarbon gases in oil that could potentially lead to a breakdown in the transformer. We need special monitoring against these gases. The other way to analyze the gas dissolved in oil is by using Dissolved Gas Analysis (DGA). The DGA will extract gases to know indications based on the interpretation of the data were performed. This method can also analyze the fault for a long term prediction, therefore the damage of the transformer can be prevented. The results of DGA analysis on the transformer is the Discharge of thermal fault obtained from data interpretation using Roger’s Ration and Duval’s Triangle method. In other way, the results of voltage breakdown testing indicate oil condition are still good that dielectric strength > 40 kv and for the water content measurement also has a good result at < 25 ppm.

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

This research aims to develop a prototype of environmentally friendly toll gate system. Instead of using smart card to identify the toll customers, the proposed system uses a Radio Frequency Identification (RFID). The vehicle is identified by the systems just before passing through the toll gate. The payment is done in fly and the notification is sent to the customers’ hand phone by the system via Short Message Service (SMS), automatically. This prototype is designed to eliminate the queue and paper trashes around the toll gate. It will save time, fuel, and the need of paper and ink. This paper presents software development part of the proposed environmentally friendly automatic toll gate system.

Peningkatan Kecepatan Proses dan Mutu Minyak Bekatul melalui Proses Ekstraksi Berbantukan Ultrasonik Mohamad Djaeni; Yuniar Luthfia Listyadevi
TEKNIK Vol 40, No 1 (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 α-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 α-tocopherol will decrease with increasing temperature, extraction time and solvent. The recommended operating conditions for obtaining yields and antioxidant values at 40ºC, material to solvent ratio 1: 5 and extraction time for 51 minutes.

Pengaruh Perlakuan Panas Terhadap Struktur Mikro, Kekerasan dan Ketahanan Oksidasi Suhu Tinggi Pada Baja Tahan Karat Martensitik 13Cr3Mo3Ni-Cor Moch Syaiful Anwar; Eric Jonathan Yulianto; Septian Adi Chandra; Rahma Nisa Hakim; Sri Hastuty; Efendi Mabruri
TEKNIK Vol 40, No 1 (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. The steels samples were prepared by a process sequence ofinduction melting, casting, austenitisazed, single tempered and double tempered. Austenitization process of 1020°C was conducted until 4 hours and quench in water. Then, tempering process of 650°C was carried out until 2 hours and cooled in the air and then double tempering process of 550°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 – 700 °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 steel 13Cr3Mo3Ni-cast in the high-temperature environment.

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