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INDONESIA
Indonesian Journal of Engineering and Science (IJES)
Published by Asosiasi Peneliti Sriwijaya (APS)
ISSN : -     EISSN : 2774373X     DOI : 10.51630
Core Subject : Science, Engineering,
Energy Engineering Materials Science & Nanotechnology Mechanical Engineering
Indonesian Journal of Engineering and Science (IJES : ISSN 2274-373X) is a peer-reviewed journal that aims at the publication and dissemination of original research articles on the latest developments in all fields of engineering science and technology. The journal publishes original papers in English, which contribute to the understanding of engineering science and improvement of the engineering technology and education. Papers may be theoretical, experimental and paper review. The contribution should be unpublished before and not under consideration for publication elsewhere.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 67 Documents
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EXPERIMENTAL STUDY OF PARTICLE SIZE EFFECT ON SEPARATION EFFICIENCY OF DUAL CYCLONE SEPARATOR Puspitasari, Dewi; Hutapea, Felix Theo Yusama
Indonesian Journal of Engineering and Science Vol. 5 No. 1 (2024): Table of Contents
Publisher : Asosiasi Peneliti Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51630/ijes.v5i1.105

Abstract

A cyclone separator is a device for separating solid particles and fluids. In this study, the performance of a cyclone separator was enhanced by adding a smaller cyclone. The objective is to separate coconut shell powder particles and determine the efficiency of the dual cyclone separator. The experiment involved varying the inlet airflow velocity to 7 m/s, 10 m/s, and 15 m/s and using different coconut shell powder particle sizes, ranging from mesh numbers 80 to 120. The results of the experiment showed that the efficiency of particle separation was significantly influenced by both the particle size and air velocity. Higher air velocity and larger particle size resulted in greater separation efficiency. The best performance was observed with the mesh particle size of 80 at an air velocity of 15 m/s, which achieved an efficiency value of 98.33%. The experiment also measured the particles' precipitated and wasted mass.
EXPERIMENTAL STUDY OF VERTICAL AXIS WIND TURBINE WITH PRE-SWIRL AUGMENTED Riady, M. Ihsan; Santoso, Dyos; Ervega, Frandiaz Agustan
Indonesian Journal of Engineering and Science Vol. 5 No. 1 (2024): Table of Contents
Publisher : Asosiasi Peneliti Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51630/ijes.v5i1.107

Abstract

The paper presents an experimental investigation on a vertical axis wind turbine that utilizes pre-swirl augmentation through a concentric stator and rotor system. The study's main objective is to demonstrate that incorporating a stator as a guide blade can significantly enhance the turbine's performance. The rotor is positioned in the inner region of the turbine and is rotated by the flow induced by the stator surrounding it in the outer region. The stator accelerates the incoming wind before it reaches the rotor. The turbine has five rotor blades and has been tested with stator guide blades varying from zero to six and twelve. Both the guide rotor and blades use a modified cp-100-050-gn cambered plate airfoil. The tests were conducted at an average wind speed of 4 m/s. The results indicate that utilizing a stator with six guide blades leads to a 52% increase in the power coefficient, while a stator with 12 guide blades yields a slightly higher increase of 58%. Moreover, the turbine with a stator comprising 12 guide blades takes less time to attain maximum speed under no-load conditions than the one with a stator with six guide blades.
FAILURE ANALYSIS OF SKID PIPE LEAKS IN WALKING BEAM TYPE REHEATING FURNACE APPLICATIONS Tripangestu, Muhamad Aldi; Zakiyuddin, Ahmad
Indonesian Journal of Engineering and Science Vol. 5 No. 2 (2024): Table of Contents: In progress
Publisher : Asosiasi Peneliti Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51630/ijes.v5i2.136

Abstract

This study investigates the failure of skid pipes within a walking beam reheating furnace at PT. X, Cilegon City. Visual inspection, chemical composition analysis, and corrosion rate evaluation revealed physical damages such as cracks, black and white scale deposits, bulging, and a 47% reduction in pipe thickness from the original 25 mm. The damage mechanism is initiated by high levels of Fe oxides causing corrosion with a dominant wustite (FeO) phase, and elements such as Ca, Mg, and Si contributing to scale formation. High water hardness (82.02 mg/L in pipe circulation) also supports scale formation. The LSI and RSI indices indicate highly aggressive water with high corrosiveness, causing localized overheating of the skid pipes. This increases the creep rate due to refractory damage, leading to high-temperature exposure and subsequent pipe leakage marked by bulging. Enhanced slag control within the reheating furnace, routine slag cleaning, and a review of cleaning schedules and frequencies to prevent similar failures.
EVALUATION OF REMAINING MATERIALS FOR RAILWAY CONSTRUCTION PROJECT Atiko Putri, Ni'mah Izati; Malaiholo, David; Astuti, Septiana Widi
Indonesian Journal of Engineering and Science Vol. 5 No. 2 (2024): Table of Contents: In progress
Publisher : Asosiasi Peneliti Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51630/ijes.v5i2.141

Abstract

This study investigates residual materials in the railway construction project. The Fishbone Diagram method identifies factors causing material waste, while the Waste Hierarchy guides material management by contractors. The remaining materials include spun piles, ballast stopper cover plates, wiremesh, concrete pad anchoring systems, and PVC pipes. The quantities are 1306.5 meters of spun pile, 86 ballast stopper cover plates, 4 wire mesh sheets, and a concrete pad anchoring system with 160 e-clips, 160 insulators, 80 rail pads, and 7 pieces of 6-inch diameter PVC pipe, along with 13 pieces of 8-inch diameter PVC pipe. The largest remaining material costs come from spun piles. Fishbone Diagram analysis categorizes the construction material waste as direct waste. Poor cutting conditions cause waste in spun piles, PVC pipes, and wire mesh. Waste Hierarchy suggests reusing materials where possible, with leftover PVC pipes suitable for recycling into pots or home decorations. Disposal is necessary for non-reusable or non-recyclable materials.
OPTIMIZATION OF STEEL PROFILE DIMENSIONS AND BOLT CONNECTIONS IN INTAKE STRUCTURES FOR ENHANCED STRUCTURAL INTEGRITY Costa, Anthony; Adhitya, Bimo Brata; Sadila, Yunira; Rosidawani, Rosidawani
Indonesian Journal of Engineering and Science Vol. 5 No. 2 (2024): Table of Contents: In progress
Publisher : Asosiasi Peneliti Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51630/ijes.v5i2.143

Abstract

Intake structures are facilities for clean water supply situated along riverbanks. These structures are reinforced concrete with pile foundations, and the intake structure comprises a profiled steel frame serving as the upper column-beam framework. The implementation of steel structures demands a high level of precision, particularly in designing connections between sectional steel beams and columns. This study, therefore, aims to determine the optimal dimensions for steel profiles by referring to the design of bolt connections as specified in SNI 1729-2020, particularly for steel beam columns subjected to pump loads and load combinations. The analysis concludes that all three material types meet the safety criteria, with a structural ratio value of ≤ 1 and structural deflection within the allowable limits. Additionally, after assessing the steel column and beam sections' capacity to bear pump loads, it was determined that the optimal bolt connection involved 8 bolts of 24 mm diameter. The ideal supplementary steel plate connection required a plate thickness of 13 mm.
A SURVEY OF LINEAR CONTROL FOR EXPERIMENTAL BALL AND BEAM WITH MIDDLE AXIS Huynh, Duy-Khoa; Nguyen, Duc-Anh-Quan; Tran, Duc-Hien; Nguyen, Xuan-Huy; Le, Tuan-Kiet; Pham, Gia-Long; Le, Chi-Danh; Bui, Nguyen-Duc-Huy; Dang, Gia-Huy; Nguyen, Minh-Tam
Indonesian Journal of Engineering and Science Vol. 6 No. 1 (2025): Table of Contents
Publisher : Asosiasi Peneliti Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51630/ijes.v6i1.149

Abstract

This paper presents an experimental study of linear control algorithms applied to a Ball and Beam system with a central axis. The focus is on evaluating the ball's ability to remain balanced around the central axis and assessing the stability of linear control strategies in real-world applications. The system is controlled using an STM32F4 microcontroller, which manages a DC motor to adjust the beam's angle in response to the ball's position. Through a series of experiments and data analysis, the study explores the effectiveness of linear control in addressing the system's nonlinear dynamics and discusses the practical challenges faced during implementation. The results contribute to a deeper understanding of advanced control techniques and their potential applications in engineering.
THE OPTIMIZATION OF STAINLESS STEEL 304 AND 316 WELDED JOINTS ON CORROSION RATE BY THE TAGUCHI METHOD Wijaya, Muhammad Agus; Arifin, Amir; Gunawan, Gunawan
Indonesian Journal of Engineering and Science Vol. 6 No. 1 (2025): Table of Contents
Publisher : Asosiasi Peneliti Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51630/ijes.v6i1.150

Abstract

The Water Treatment Plant (WTP) is a water purification system designed to meet the water demands for power generation and operational requirements in the petrochemical industry. The current pipeline network in the Demin Plant unit employs carbon materials with rubber cladding, which presents drawbacks, such as extended recovery times during system failures. To address the issue, the research explored welding SS 304 and SS 316 materials as an alternative to the existing carbon pipes with rubber cladding. The study utilized the Taguchi experimental design method, employing an orthogonal array (L9) table to optimize quality improvement while minimizing costs. The experiment included 9 test specimens with three repetitions, examining four welding parameters, each with three levels. Variance (ANOVA) was analyzed using the Minitab software and manual calculations in Microsoft Excel. The results indicated that the factors influencing the corrosion rate of the specimens include the welding method, electrode type, welding speed, and welding current. ANOVA results showed that the welding method (F-value = 5.9176) and welding current (F-value = 8.3492) significantly affected the corrosion rate, whereas the electrode type (F-value = -3.5949) and welding speed (F-value = -2.8321) did not. A confirmation experiment yielded an optimal corrosion rate of 3.0231 mm/y, lower than experiment number 7.
FEASIBILITY ANALYSIS OF HALF BEAD TECHNIQUE TO REPLACE POST-WELD HEAT TREATMENT IN WELDING A335 GRADE P22 PIPES Haryadi, Haryadi; Arifin, Amir
Indonesian Journal of Engineering and Science Vol. 6 No. 1 (2025): Table of Contents
Publisher : Asosiasi Peneliti Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51630/ijes.v6i1.151

Abstract

This work evaluates the feasibility of using the Temper Bead Welding (TBW) method with the Half Bead technique as an alternative to Post-Weld Heat Treatment (PWHT) for welding A335 Grade P22 pipes. Three treatment methods were compared: preheating, preheating with TBW, and preheating with PWHT. Hardness testing is carried out using the Vickers microhardness testing method. The only preheat method showed the highest hardness values in the HAZ (342 HV), fusion zone (357 HV), and weld metal (334 HV). TBW with the half bead technique had higher hardness only in the base metal (191 HV). PWHT provides the most uniform hardness distribution, effectively relieves residual stresses, and homogenizes the microstructure. TBW reduced HAZ size by 50% more than preheating. The microstructure observed in all methods was ferrite and pearlite, with differences mainly in grain size. Although TBW is a viable alternative for repair, this method is unsuitable for application in early fabrication processes.
PID CONTROL FOR AUTONOMOUS OBJECT-FOLLOWING ROBOT Nguyen, Duc-Bao-Long; Ho, Minh-Khoi; Dao, Anh-Quan; Truong, Nhu-Bao; Nguyen, Thanh-Binh; Nguyen, Quang-Trung; Nguyen, Hoang-Nghia; Nguyen, Dang-Khoi; Le, Quang-Hung; Tran, Ky-Tinh
Indonesian Journal of Engineering and Science Vol. 6 No. 1 (2025): Table of Contents
Publisher : Asosiasi Peneliti Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51630/ijes.v6i1.153

Abstract

This paper presents an experimental study on the PID algorithm applied to a vehicle system that maintains a fixed distance from an object. The research focuses on how changes in PID parameters affect the vehicle's behavior. The system comprises an SRF05 ultrasonic sensor connected to an Arduino, controlling the vehicle is forward and backward movements to follow the object. Through a series of experiments, analyses, and evaluations, the study explores the effectiveness of the PID controller and addresses challenges. The results help identify the optimal PID parameter values for the system systematically.
PID TRAJECTORY TRACKING CONTROL FOR BALL-AND-PLATE SYSTEM Vo, Tuan-Vu; Dang, Thai-Duong; Chung, Gia-Khang; Dang, Xuan-Truong; Ma, Thanh-Phat; Nguyen, Thanh-Lam; Dau, Nhat-Quang; Cao, Nam-Thai; Huynh, Thien-Phuc; Tong, Minh-Thong; Nguyen, Minh-Tuan; Nguyen, Hoai-Minh; Nguyen, Duc-Bao-Long
Indonesian Journal of Engineering and Science Vol. 6 No. 1 (2025): Table of Contents
Publisher : Asosiasi Peneliti Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51630/ijes.v6i1.169

Abstract

Ball-on-Plate (BoP) is developing a ball-and-beam system. This transformation transforms a single input-multi output (SIMO) system into a multi input-multi output (MIMO) under-actuated system. In this paper, we utilize the PID method—a popular linear control method in industry and academia—to track trajectory control for BoP. This system's self-made hardware is presented to test PID control through an experiment. This method is shown to track trajectory control well for real-time BoP.

Page 6 of 7 | Total Record : 67

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