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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 39, no 2 (2018)" : 9 Documents clear

Pemodelan Pola Operasi Sistem Pompa Pada Desain Polder Guna Mitigasi Banjir Dan Rob Di Wilayah Semarang Timur Rizka Arbaningrum
TEKNIK Vol 39, No 2 (2018)
Publisher : Diponegoro University

Floods and robs that often occur in the East Semarang region result in economic, social and environmental losses. In order to improve this condition, permanent handling is needed, namely by making a polder system consisting of sea dikes, retention ponds and pump houses. The purpose of this study was to analyze the modeling of the operational pattern of the pump system in the polder design. The stages of modeling the operational pattern of the pumping system starts from the calculation of flood discharge, modeling of retention ponds, and pumps using HEC-HMS 4.0 software. The next step is analyzing the operational pattern of the pump system. From the results of the study obtained a plan in 25 annual flood discharge for retention ponds is 138 m³ / s. The design of the retention pond is 210 hectares with a depth of 3.7 m. The pump capacity required is 15 m³ / s with a pump composition with a capacity of 2.5 m³ / s and 5 m³ / s, each of 2 units. The pump modeling analysis uses a pump with a capacity of 2.5 m³ / s of 2 units and 5 m³ / s of 6 units. From the results of the analysis show that the operational pattern uses an elevation-discharge function, where the function forms the operational pattern of each pump which will operate based on the water level evaluation criteria for each pump. With these operational patterns, it will reduce operational and maintenance costs

Penilaian Risiko Sistem Informasi Fakultas Teknik Universitas Diponegoro Menggunakan Metode Failure Mode Effect And Analysis Berbasis Framework ISO 27001 Naniek Utami Handayani; Mochammad Agung Wibowo; Diana Puspita Sari; Yoga Satria; Akbar Romadhona Gifari
TEKNIK Vol 39, No 2 (2018)
Publisher : Diponegoro University

The data leakage and misuse of information by unauthorized parties that had happened forces the protection of security of information system in the Faculty of Engineering Diponegoro University (SIFT UNDIP) to be improved. This research aims to identify the risks, to analyze security of information system management, and to determine risk priority in SIFT UNDIP. This research is conducted using Failure Mode Effect and Analysis method based on ISO 27001 framework. Analysis results show that there are 25 risk agents in SIFT UNDIP which are categorized into four types of assets. The highest risk in High Level Risk category is the risk of dependence on employees which has Risk Priority Number value of 80.

Penurunan Kadar Kromium Total Pada Limbah Elektroplating Menggunakan Adsorben Dari Daun Sukun (Artocarpus Altilis) Dengan Aliran Kontinu Hardoyo Hardoyo; Nurbaiti Marsas Prilitasari; Natalina Natalina
TEKNIK Vol 39, No 2 (2018)
Publisher : Diponegoro University

The Electroplating wastewater the contain chromium (Cr) was one of hazardous waste to the environment. That waste have to treated before discharge to the environment. One of the treatment of the Cr-containing wastewater was adsorption. The leaf and stem of Artocarpus altilis have potentially used as a adsorbent to treatment Cr-containing wastewater. The process activated on the production of adsorbent could be done by acid and non acid process. The purpose of this research were to known the potential of Artocarpus altilis leaf to adsorpt the total-Cr in the electroplating wastewater. The research was done using a 12cm length of 1,3 cm diameter of pipe reactor with up-flow continuously stream. The debit were used in this research was 0.255 cm3/det. The total-Cr were measured by Atomic Absorption Spectophotometer(AAS). The research result show that the absorption using adsorbent that produced by acid process could be reduced total-Cr from 77.45 mg/l to 0.47mg/l (99.34%), while the absorption using adsorbent that produced by non acid-process could be reduced total-Cr from 77.45mg/l to 4,75 mg/l (93,86%) only. The absorption using Artocarpus altilis leaf adsorbent that produced by acid-adsorbent could be used to treatment of Cr-containing electroplating wastewater, because the treated-concentration from this process was lower than 0.5 mg/l (according on Quality standard PERMEN LH No 5, 2014.

Penurunan Temperatur Instalasi Kabel NYM 2x1.5mm2 Dengan Mengatur Sudut Penekukan Mauludi Manfaluthy; Muhammad Syukur; Adi Supriyadi
TEKNIK Vol 39, No 2 (2018)
Publisher : Diponegoro University

One of the major causes on high temperature of the cable wires are erroneous bent position. Apparently at certain circumstances such as home or factory, cable installation must not be applied in upright assemble. There is a considerable that the cable installation must be applied in bent position. It was found that imprudent cable bending installation more likely to cause higher temperature to the cable. Considering controversy surrounding higher heat may occur to smaller and taper bending angle cable when it is electrified, it was designed an innovative solution to demote the temperature of NYM 2 x 1,5mm2 cable installation by regulating the cable bent angle. In this research, NYM 2 x 1.5mm2 cable were used as insulation resistance test by flowing it with various electric current as well as 5A, 10A, 17A, 18A and 19A. Cable bending angle were tested at 30o, 60o, 90o, 120o , and behind-bent wires. The test equipment was Omicron CPC 100 which has the capabilities of driving the output voltage up to 2kV AC with electrical currents output up to 800A and 400A DC. The results were significant to the cable with mild bending angle that reduces the amount of temperature which stopped isolation from burning and prevented conductive wire from melting where taper bending cable angle with (300) isolation were likely to be more flammable.

Analisa Perubahan Volume Sedimentasi Waduk Pangsar Soedirman Menggunakan Karakteristik Curah Hujan Berbasis Universal Soil Loss Equation (USLE) Teguh - Marhendi
TEKNIK Vol 39, No 2 (2018)
Publisher : Diponegoro University

This research aims to analyse the reservoir sedimentation volume changing of Pangsar Soedirman Dam at Banjarnegara regency through rain erosivity and erosion analysis using universal soil loss equation (USLE) method. The catchment area of Pangsar Soedirman Dam reservoir has rainfall ranging from 1,500 - 5,500 mm/year. In 1989 and 1993, rainfall which has ranging from 3,000 - 5,500 mm/year did not make any increase of reservoir sedimentation volume. In contrast, with rainfall 1,500 mm/year in 1998, the reservoir sedimentation volume reached 6 million m3. Similarly, with rainfall 5,500 mm/year in 1999, the reservoir sedimentation volume decreased from 6 million m3 to about 4 million m3. These results show that the characteristics of rainfall in the catchment area do not always contribute to the increase of sedimentation volume in the reservoir but can also be influenced by other determinants other than rain

Analisis Akurasi Model Tiga Dimensi Gedung Prof. H. Soedarto, SH. Menggunakan Teknologi Terrestrial Laser Scanner (TLS) Berbasis Metode Traverse Yudo Prasetyo
TEKNIK Vol 39, No 2 (2018)
Publisher : Diponegoro University

The technology to record spatial building for conservation and spatial planning is growing rapidly. The urgency of the accuracy level in a measurement were set up higher than it used to. Three-dimensional object forming using Terrestrial Laser Scanner (TLS) equipment was one of the popular technologies among all. The TLS measurement method consists of 4 methods: Cloud to Cloud, Target to Target, Traverse, and hybrid method. This research aims to analyse the accuracy level of the Traverse method in measuring an 3D object for building documentation purposes using TLS. The accuracy level of Traverse method will be tested onto Building of Prof. Soedarto, S. H. There are two parameters used in validating the accuracy level of Traverse method: registration methods and visualization results of the three-dimensional model. The analysis result of point cloud data shows that TLS equipment applied with Traverse method is capable of producing 3D model of Building of Prof. H. Soedarto S. H. The obtained average validation value is 0.004 meters with the accuracy level of the RMSE model of ± 0.00611 meters

Estimasi Deformasi Permukaan Gunung Bromo menggunakan Analisis Time-Series InSAR Small Baseline Subset Arliandy Pratama Arbad; Wataru Takeuchi; Yosuke Aoki; Achmad Ardy; Mutiara Jamilah
TEKNIK Vol 39, No 2 (2018)
Publisher : Diponegoro University

We observe the surface deformation of the Mt. Bromo which located at eastern Java Indonesia area that includes neighborhood volcanic system on TNBTS (Taman Nasional Bukit Tengger Semeru). Recently, remote sensing has played as an important role to observe volcano behaviour. We apply the SAR Interferometry (InSAR) algorithm referred to as Small Baseline Subset (SBAS) approach that allows us to generate mean deformation velocity maps and displacement time series for the studied area. The common SBAS technique, the set of interferometric phase observations writes as a linear combination of individual SAR scene phase values for each pixel independently. Particularly, the proposed analysis is based on 22 SAR data acquired by the ALOS/PALSAR sensors during the 2007–2011 time interval. A fewer studies have been able to show capability of InSAR analysis for investigating cycle of volcano especially of Mt. Bromo which characterized eruption stratovolcano in ranging one to five years. The results expected in this work represent an advancement of previous InSAR studies of the area that are mostly focused on the deformation affecting the caldera. According to the result, we expected this study could implement on risk management or infrastructure management.

Analisa Gerakan Rolling Kapal Bocor Akibat Beban Gelombang Laut Pada Kapal Bulk Carrier Teguh Putranto; Dedi Budi Purwanto
TEKNIK Vol 39, No 2 (2018)
Publisher : Diponegoro University

The stability is a key requirement for the ship to sail safely. This article presents an analysis of rolling movements on bulk carrier vessels that have leaked when subjected to wave loads with heading angles of 90⁰ and 270⁰ and maximum wave height. The ship is in full load condition when the simulation and analysis is carried out with a scenario of leakage in the cargo chamber. Because the vessel with compartment leakage has trim and shaky conditions, the results of the rolling motion show differences in each direction the waves come. The 3D diffraction panel method is used to get the rolling motion of the ship as a function of time. The results of the study without sloshing effects showed that the bulk carrier had the risk of sinking if there were leaks in the two cargo chambers.

Evaluasi Kemantapan Permukaan Jalan Berdasarkan International Roughness Index Pada 14 Ruas Jalan di Kota Yogyakarta Ardilson Pembuain; Sigit Priyanto; Latif Budi Suparma
TEKNIK Vol 39, No 2 (2018)
Publisher : Diponegoro University

Roads that have poor surface roughness can cause uncomfortable to road users, traffic accidents, increase dynamic loads on the road surface, thereby accelerating the process of road damage, and damage to vehicles. This research aims to evaluate the stability of road conditions based on the international roughness index (IRI). Evaluation of road stability conditions was carried out on 14 road segments in the city of Yogyakarta, with details of four secondary arterial road segments and 10 secondary collector road segments. Data on road surface roughness (IRI) values were obtained using NAASRA roughness meter which refers to SNI 03-3426-1994. Evaluation of the stability of road conditions is done by comparing the IRI values of the survey results and the limits of IRI values determined by the Directorate General of Highways. The results showed that 14 roads were evaluated, 64% were in moderate condition and 36% were in good condition. Of the 14 roads, the Sisingamangaraja, Lowanu, and Sugeng Jeroni roads have the highest IRI value in a sequence so that the three road segments are prioritized for handling.

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