Garuda - Garba Rujukan Digital

p-Index From 2020 - 2025

1.431

P-Index

This Author published in this journals

All Journal TEKNIK KAPAL Jurnal Ilmu Pengetahuan dan Teknologi Kelautan IPTEK The Journal for Technology and Science Sinergi Warta Penelitian Perhubungan International Journal of Marine Engineering Innovation and Research JMES The International Journal of Mechanical Engineering and Sciences Warta Penelitian Perhubungan

Dedi Budi Purwanto

Teknik Perkapalan Fakultas Teknologi Kelautan Institut Teknologi Sepuluh Nopember

Author-ID : 349959

Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Transportation

Published : 11 Documents Claim Missing Document

Claim Missing Document

Articles

1 2

Analisa Gerakan Rolling Kapal Bocor Akibat Beban Gelombang Laut Pada Kapal Bulk Carrier Putranto, Teguh; Purwanto, Dedi Budi
TEKNIK Vol 39, No. 2 (2018): Desember 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 90â° and 270â° 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.

KAJIAN PENGEMBANGAN KAPAL WISATA BERBASIS ENERGI ALTERNATIF: KOMBINASI LAYAR DAN PANEL SURYA Purwanto, Dedi Budi; Utama, IKAP
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 12, No 1 (2015): Februari
Publisher : Department of Naval Architecture - Diponegoro University

Potensi energi alternatif yaitu angin dan matahari dapat dimanfaatkan secara maksimal untuk membantu energi kapal wisata di Madura. Desain lambung yang digunakan adalah tipe monohull dan katamaran pada displasemen yang sama sebesar 6 ton, didapatkan besaran hambatan dengan menggunakan analisa numerik CFD yang diperlukan untuk menghitung kebutuhan daya terhadap kecepatan relatifÂ kapal. Penyelidikan secara numerik dimulai dengan Pre-processing yang meliputi pembuatan geometri benda, dan meshing. tahap pemilihan solver yang meliputi pemilihan boundary-condition, pemilihan model laminar maupun turbulensi aliran, pemilihan jenis fluida dan struktur, dan pemilihan solving-equation bertujuan untuk mendapatkan data gaya-gaya hidrodinamika dan efeknya terhadap lambung kapal maupun layar pada saat menerima aliran fluida. Gaya yang dihasilkan oleh layar dengan bentuk segitiga dengan ukuran lebar sebesar 3 meter dan tinggi sebesarÂ 4 meter, sebesarÂ 0.812 kN. Luasan panel surya yang tersedia untuk kapal monohull sebesar 24m2 mampu memberikan konstribusi power sebesar 3.42 kW, sedangkan untuk tipe katamaran sebesar 54m2 mampu memberikan konstribusi power sebesar 7.7 kW. Kapal monohull dengan L = 12 m, B = 2.4 m, T = 1 m, menggunakan layar dan panel surya memberikan konstribusi kecepatan kapal sebesar 6 knot, sedangkan untuk kapal katamaran dengan ukuran utama L = 12 m , B = 6 m, T = 0.55 m, menggunakan layar dan panel surya memberikan konstribusi kecepatan kapal sebesar 8 knot.

EFEK PENAMBAHAN ION TARTRATE TERHADAP ELEKTRODEPOSISI Mn-Cu PADA PIPA BAJA KARBON Triastuti, Warlinda Eka; Purwanto, Dedi Budi
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 9, No 3 (2012): Oktober
Publisher : Department of Naval Architecture - Diponegoro University

Sistem perpipaan pada kapal laut menunjang seluruh sistem dalam kapal. Pipa-pipa ini merupakan tempat mengalirnya uap ataupun cairan yang berupa air, bahan bakar ataupun minyak pelumas. Tekanan, temperatur dan jenis fluida yang mengalir dalam pipa dapat mengakibatkan korosi yang akhirnya mempengaruhi kekuatan dan umur pipa. Salah satu metode untuk menurunkan laju korosi yaitu penggunaan anoda korban. Jenis anoda korban yang digunakan dalam penelitian ini adalah paduan mangan-tembaga. Penelitian ini bertujuan untuk mengetahui morfologi dan karakter korosi elektrodeposisi Mn-Cu pada baja AISI 1020.Â Proses elektroplating dilakukan dan dengan tanpa penambahan surfaktan potassium sodium tartrate. Hasil penelitian menunjukkan bahwa elektrodeposisi Mn-Cu yang dihasilkan dari proses pelapisan pada baja AISI 1020 dengan penambahanÂ potassium sodium memiliki performance yang lebih baik karene logam Mn-Cu menempel pada permukaan baja lebih merata. Laju korosi terendah sebesar 1.116 mpy pada waktu deposisi 180 detik.

Stability Analysis of Catamaran Passenger Vessel with Solar Cell Energy in Calm Water Dedi Budi Purwanto; Aries Sulisetyono; Teguh Putranto
IPTEK The Journal for Technology and Science Vol 28, No 3 (2017)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

The use of solar energy as the driving force for the ship's tour seems to be a major theme in efforts to create a marine transportation that are environmentally friendly as part of the Energy Efficiency Design Index (EEDI) for the reduction of pollutant levels. The electrical energy generated by solar energy is not as much energy from fossil fuels so that the solar panel powered ship that can only be engaging with a limited range and speed.This type of catamaran hull design that has two symmetrical hull which allows to have an expansive deck, small boat barriers and good stability. The shape of the deck of the ship will contribute extents solar panels that can be utilized as a producer of power required at the time of calculation of powering the vessel. The analysis of the stability of the vessel performed numerically with reference to the IMO regulations requiring minimum value stability arm at certain angles. The output of this research is catamaran vessel that have battery, solar panel, electric motor moving with speed 5 knots.

Automated Corrosion Detection on Steel Structures Using Convolutional Neural Network Mohammad Khoirul Effendi; Bara Atmaja; Arif Wahjudi; Dedi Budi Purwanto
JMES The International Journal of Mechanical Engineering and Sciences Vol 7, No 1 (2023)
Publisher : LPPM, Institut Teknologi Sepuluh Nopember, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25807471.v7i1.15881

Steel is a material that is widely used in industry and construction. The tensile and compressive force of steel is relatively high compared to other materials. On the opposite, low corrosion resistance is the main weakness of steel, which can encourage steel deterioration and fatal accidents for the user. Furthermore, regular visual inspection by a human should be performed to prevent catastrophic incidents. However, human visual inspection increases the risk of work accidents and reduces work effectiveness. Therefore, a drone with a camera is one solution to increase efficiency, increase security levels, and minimize difficulties or risks during corrosion inspection. In this research, the drone has been used to capture corroded video of a construction structure. The convolutional neural network (CNN) method is then used to detect the location of the corroded images. This study has been conducted on Surabaya’s Petekan-bridge with the Mobilenet V1 SSD pre-training model. In this study, the distance between a drone and the detected object varied between 1 and 2 m. Next, the drone speed was varied into 0.6 m/s, 0.9m/s, and 1.3m/s. As a result, CNN can detect corrosion on the surface of steel materials with the best accuracy is 84.66% and minimum total loss value of 1.673 by applying 200 images, 200000 epochs, batch size at 4, learning rate at 0.001 and 0.1, the distance at 1 m, drone speed at 0.6 m/s.

Equivalent Single Layer Approach for Buckling Analysis of Stiffened Panel Under Bi-Axial Compression and Lateral Pressure Teguh Putranto; Ardi Nugroho Yulianto; Dedi Budi Purwanto; Dony Setyawan
International Journal of Marine Engineering Innovation and Research Vol 8, No 3 (2023)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v8i3.18595

Ship structure composed of stiffened plates is subjected to a variety of loading conditions during service, which can lead to buckling. As a result of panel buckling, the overall strength of the ship hull girder is reduced, which is what determines the ultimate strength of the hull girder. The ultimate strength analysis can be accomplished with finite element (FE) simulation, but detailed modeling can be time-consuming. Due to these reasons, it is more advantageous and costeffective to replace the three-dimensional (3D) stiffened panel model with a two-dimensional (2D) equivalent single layer (ESL) plate. This shift from 3D to 2D is premised on the accuracy of ESL in representing the various buckling modes of stiffened panels, which are determined by panel topology and boundary conditions. Therefore, an equivalent single layer plate (ESL) that represents a stiffened panel is evaluated in different buckling modes. Considering that ESL is asymmetric in nature, any modification of the stiffened panel's geometry has a significant effect on the buckling modes. In this paper, we are concerned with two modes of buckling: (i) local buckling within the stiffeners of the plate and web, and (ii) local lateraltorsional buckling within the stiffeners. According to the results, ESL is capable of accurately predicting the effect of local buckling in combination of biaxial compression and lateral pressure.

Design and Manufacture Ballast Management System Model for Reduce Ship Rolling Motion Yulianto, Totok; Hermawan, Yuda Apri; Widjaja, Raden Sjarief; Purwanto, Dedi Budi; Sulaiman, Suardi bin; Rahmi, Lista Putri Adinda
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 20, No 3 (2023): October
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/kapal.v20i3.59192

The safety of maritime transportation is a critical aspect that must be addressed to ensure the well-being of ships and their crew. Frequent ship accidents highlight the need for improvements in the maritime transportation system. One of the causes of ship accidents is ship instability, leading to a loss of balance and even sinking. Ship stability is influenced by both internal and external factors, including human negligence in observing and addressing ship instability. This research aims to design and create a management ballast system model that can be operated automatically as a solution to reduce ship rolling motion. This system enables the ship to maintain balance using automatic side ballast tank management by utilizing two wing tanks on either side of the ship. The ballast management system will be equipped with an accurate ship roll angle detector, the Initial Measurement Unit sensor, a microcontroller, and a series of actuators, including relays as voltage control switches for the pump motor. This research involves simulation and testing/experiments at various angles, namely 5, 10, and 15 degrees. Simulations are conducted under conditions with and without the ballast management system, which is then confirmed through experiments under the same conditions. The expected outcome of this research is that the created ballast management system can be used to reduce ship rolling.

Design of Remotely Operated Underwater Vehicle (ROUV) for Underwater Metal Detection Widjaja, Raden Sjarief; Purwanto, Dedi Budi; Trimulyono, Andi; Hafizh, Muhammad Nur Abdullah
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 21, No 2 (2024): June
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/kapal.v21i2.62767

The underwater surveys and inspections in Indonesia were carried out mostly by the operation of practical divers who were limited to shallow waters. The deep - sea exploration requires more advanced technology. The development of underwater technology is required to support many functions of underwater surveys and inspections. The purpose of this study was to design a Remotely Operated Underwater Vehicle (ROUV) for detecting objects with metallic materials. The ROV was designed with a Penta Tubular model and camera assistance for navigation, the JSNSR04T ultrasonic sensor to detect object distances, and the LJ12A3 inductive proximity sensor as a metal detector. ROUV rides are controlled using a keyboard with certain keywords and monitored using a smartphone. Testing the JSN-SR04T Ultrasonic sensor uses 5 variations of distance, namely 20cm, 40cm, 60cm, 80cm, and 100cm, with the detection object in the form of a plate with dimensions of 35cm x 35cm. For testing the inductive proximity sensor, the LJ12A3 type uses 3 variations of materials, namely steel plate, aluminum plates as metal objects, and PVC plates as control materials. Tests were carried out in two mediums, namely in air and underwater. Based on the results of data retrieval testing of the ultrasonic distance sensor in the air, the smallest error percentage is 0.06%, and the highest error percentage is 0.705%. In the underwater test, the error percentage was 0.49% for a distance variation of 100 cm. The ultrasonic distance sensor type JSN-SR04 cannot read distance data below 89.75 cm in water due to differences in the speed of sound propagation in different media. The Inductive Proximity Sensor can work well in air and water mediums with 100% accuracy on steel plates, aluminum plates, and PVC plates.

Analysis of empirical method for predicting maneuverability of ultra-large container ship using Maneuvering Modelling Group (MMG) model Zeinurrohman, Rangga; Trimulyono, Andi; Wicaksono, Ardhana; Hadi, Eko Sasmito; Samuel, Samuel; Hakim, Muhammad Luqman; Purwanto, Dedi Budi
SINERGI Vol 28, No 2 (2024)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2024.2.016

International Maritime Organization (IMO) provided manoeuvrability standards for all ships above 100 m to ensure the ship's safety and surroundings. In the preliminary design stage, one way to ensure a ship's manoeuvrability under IMO standards is to use empirical methods that are cheaper and less time-consuming than model tests. Empirical methods used analysis regression to develop their formula from the model test result database, and their formula depends on ship hull parameters and dimension ratios such as , , , and . However, the database of the existing empirical formulas is limited to small-medium merchant ships and fishing vessels, as consequences for larger ships are inaccurate and have a significant error in predicting ship manoeuvres. This study modified the existing empirical formulas by adding specified ship data into the existing database and analyzing the accuracy of predicting ship manoeuvres using the Maneuvering Modelling Group (MMG) model. We verify by adding the selected ship data into the existing database, which shows improvement in predicting ship manoeuvres. The modified formulas show improvement by only giving 5% RMSE of tactical diameter and 3% RMSE of ship advance in turning manoeuvre, and this is a 78% overall improvement in predicting the turning motion of ultra-large container ships compared to previous formulas. The quantitative and qualitative produce better estimation result that indicates the right track to derive the empirical formulas for Ultra-Large Container ships.

Evaluasi Karakteristik Deep-v Planing Hull Dengan Menggunakan Metode Moving Grid Mesh Samuel, Samuel; Iqbal, Muhammad; Trimulyono, Andi; Purwanto, Dedi Budi; Ariani, Betty
Warta Penelitian Perhubungan Vol. 34 No. 1 (2022): Warta Penelitian Perhubungan
Publisher : Sekretariat Badan Penelitian dan Pengembangan Perhubungan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25104/warlit.v34i1.1591

Karakteristik Deep-v planing hull sangat dipengaruhi oleh bentuk dan kecepatan kapal. Bentuk pada haluan kapal akan mempengaruhi performance kapal pada saat kondisi air tenang dan gelombang. Semakin tinggi kecepatan kapal maka akan semakin sulit untuk memprediksi karakteristik kapal tersebut. Pada penelitian ini akan menggunakan pendekatan Computational Fluid dynamic (CFD) dengan menggunakan metode moving grid mesh untuk mengevaluasi karakteristik kapal pada saat kondisi air tenang dan gelombang regular. Perhitungan numerik menggunakan persamaan RANS (Reynolds-Averaged Navier-Stokes) dengan model turbulensi k-ε untuk memprediksi aliran turbulen. Hasil simulasi pada kondisi air tenang hambatan menunjukkan trend yang baik pada kecepatan rendah, sementara pada kecepatan tinggi ada perbedaan yang signifikan. Pada kondisi gelombang regular hasil simulasi numerik masih perlu pendekatan yang lebih baik.

Co-Authors Agus Surono Agustiani, Elly Andi Trimulyono Ardi Nugroho Yulianto Aries Sulisetyono Arif Wahjudi Bara Atmaja Betty Ariani Danawati Hari Prajitno Eko Sasmito Hadi Hafizh, Muhammad Nur Abdullah Hermawan, Yuda Apri IKAP Utama Mohammad Khoirul Effendi Muhammad Iqbal Muhammad Iqbal Muhammad Luqman Hakim, Muhammad Luqman Rahmi, Lista Putri Adinda Samuel Samuel Samuel Samuel Setyawan, Dony Sulaiman, Suardi bin Teguh Putranto Totok Yulianto Wardani, Putri Kusuma Warlinda Eka Triastuti Wicaksono, Ardhana Widjaja, Raden Sjarief Zeinurrohman, Rangga

Title

Found 11 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 11 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 11 Documents
Search