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Jurnal Teknologi Riset Terapan
Published by Goodwood Publishing
ISSN : -     EISSN : 29867169     DOI : https://doi.org/10.35912/jatra
Core Subject : Science, Engineering,
Computer Science & IT Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering
Jurnal Teknologi Riset Terapan (JATRA) adalah jurnal peer-review yang menerbitkan artikel penelitian asli dan berkualitas di bidang teknologi riset terapan. Jurnal ini bertujuan menjembatani kesenjangan antara teori dan praktik dalam ilmu pengetahuan dan teknologi agar dapat diterapkan dalam kehidupan sehari-hari. Ruang lingkup JATRA mencakup, namun tidak terbatas pada, bidang-bidang seperti Teknik Industri, Teknik Informatika, Ilmu dan Teknik Material, Manufaktur, Mikroelektronika, Teknik Elektro, Teknik Mesin, Teknik Kelautan, Arsitektur Kapal, Teknik Dirgantara dan Pemeliharaan Pesawat, Teknik Kimia, serta berbagai aplikasi mekanikal, elektrikal, elektronika, dan informatika dalam bidang rekayasa dan teknologi terapan.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 38 Documents
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Design of Batch Reactor for the Production of SnCl2 Particles Yohanes Ivan Benaya Parlindungan Nainggolan; Risti Ragaditha; Asep Bayu Dani Nandiyanto
Jurnal Teknologi Riset Terapan Vol 3 No 2 (2025): Juli
Publisher : Penerbit Goodwood

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35912/jatra.v3i2.6918

Abstract

Purpose: This study aims to design and evaluate a batch reactor for industrial-scale production of Stannous Chloride (SnCl2) from Indonesian tin resources, supporting downstream processing of tin into higher-value chemical products.Methodology: A computational design approach was applied using sequential chemical engineering equations in Microsoft Excel. The process is based on the reaction between Tin (Sn) and Hydrochloric Acid (HCl). The reactor is designed as a cylindrical batch vessel with a dished top and conical bottom, made of stainless-steel SA 240 Grade 316. Operating conditions include 80°C, 1 atm, and 1-hour batch time, with 1,000 kg/h tin feed and 95% conversion. Mass balance, sizing, and mechanical design calculations were performed, including stirrer specifications. Results: The reactor has a volume of 29.0184 ft³, diameter of 2.7889 ft, and height of 5.6690 ft. Mass balance yields 1,517.31 kg/h SnCl? and 16.13 kg/h H?. The system uses a 2 Hp axial turbine stirrer with 16.7334 in impeller diameter.Conclusions: The designed reactor demonstrates technical feasibility for industrial SnCl? production and complies with ASME pressure vessel standards.Limitations: The model does not include effectiveness factors for diffusion limitations in heterogeneous reactions. Contributions: This study provides a validated engineering design reference for SnCl? production and supports downstream tin industry development in Indonesia
Bibliometric Analysis of Polyethersulfone (PES) Membrane Research Development (2012-2022) Using Publish or Perish and VOSviewer Silvia Widiyanti; Asep Bayu Dani Nandiyanto
Jurnal Teknologi Riset Terapan Vol 3 No 2 (2025): Juli
Publisher : Penerbit Goodwood

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35912/jatra.v3i2.6922

Abstract

Purpose: Polyethersulfone (PES) membranes are widely used in filtration and gas separation due to their strong thermal, mechanical, and chemical stability. However, no comprehensive bibliometric mapping of PES membrane research has been conducted. This study aims to analyze publication trends, research quality, influential works, and thematic evolution in PES membrane literature from 2012 to 2022.Methodology: Bibliometric data were retrieved from Google Scholar using Publish or Perish with keywords related to Chemistry, Particle, PES, and Membrane, covering 1,000 articles (2012–2022). VOSviewer was used for analysis through network visualization (co-word clustering), overlay visualization (temporal trends), and density visualization (research intensity). A minimum co-occurrence threshold of five keywords produced 170 significant terms.Results: Publications increased from 55 in 2012 to 123 in 2020, averaging about 90 papers annually. Of 1,000 articles, 77.8% were published in Q1 journals, with Elsevier contributing 61.4%. Eight thematic clusters were identified, highlighting mixed matrix membranes and MOF-based membranes as dominant research directions.Conclusions: PES membrane research shows strong growth and high publication quality, evolving toward advanced mixed matrix and MOF/COF-based membrane technologies.Limitations: The dataset is limited to Google Scholar, partial 2022 coverage, and keyword constraints that may exclude relevant studies.Contributions: This study provides the first bibliometric baseline for PES membrane research, mapping trends, quality distribution, and thematic evolution to guide future research directions.
Compressive Strength Analysis of Solid Cylindrical Concrete K250 and K300: Effect of Curing Method on 28-Day Performance Riham Arfiyah; Zaenal Abidin; Muhammad Reza Falakhuddin
Jurnal Teknologi Riset Terapan Vol 3 No 2 (2025): Juli
Publisher : Penerbit Goodwood

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35912/jatra.v3i2.6924

Abstract

Purpose: This study aims to determine and analyze the compressive strength of K250 and K300 concrete cylindrical specimens tested at 28 days, and to explain the mechanism by which differential curing methods applied to the two grades produced counterintuitive strength outcomes in the context of a nuclear technology education facility.Methodology: Compressive testing was conducted on five K250 and five K300 concrete cylindrical specimens (diameter 150 mm x height 300 mm) at 28 days using a Cernusco Compression Testing Machine (Model 20063). K250 specimens underwent 28-day continuous water immersion, whereas K300 specimens received only ambient air curing from the date of casting. Compressive strength values were recorded, group means were computed, and results were compared against design strength targets per PBI 1971.Results: K250 water-cured specimens produced a mean compressive strength of 346.28 kg/cm², exceeding the 250 kg/cm² design target by 38.5%. Air-cured K300 specimens attained only 287.87 kg/cm², falling below their 300 kg/cm² design target, resulting in K250 outperforming K300 by 58.41 kg/cm².Conclusions: Curing method overrides nominal mix design grade as the controlling determinant of 28-day compressive strength. Limitations: The small sample of five specimens per grade and the absence of controlled mix design parameters limit generalizability.Contributions: This study provides an empirical case study of the compressive strength consequences of differential curing conditions on K250 and K300 concrete, offering practical evidence for construction quality control protocols in nuclear technology and general engineering facility contexts.
The Role of Water User Farmers Associations (P3A) in Improving Irrigation Network Performance in the Patawang Ema Aisyah Fadila Ambuwaru; Ramzy G.G.L. Sayonara; Amandus Jong Tallo
Jurnal Teknologi Riset Terapan Vol 3 No 2 (2025): Juli
Publisher : Penerbit Goodwood

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35912/jatra.v3i2.6925

Abstract

Purpose: Water User Farmers Associations (P3A) manage tertiary irrigation systems in Indonesia, yet the relative importance of technical capability versus service quality for irrigation performance remains unclear. This study examines the effects of P3A technical capability and service quality on irrigation performance in Patawang, East Sumba.Research Methodology: Research used quantitative descriptive correlational design. Data from 33 respondents across 11 P3A organisations were selected by sampling. Variables include irrigation performance (Y), technical capability (X1), and service quality (X2). Data were analysed using multiple linear regression in SPSS with validity, reliability, and assumption tests.Results: The multiple linear regression model was significant (F = 7.904, F-table = 3.32, p = 0.002). R² = 0.345 indicates 34.5% explanatory power. P3A Technical Capability significantly affects performance (? = 0.631, t = 2.803, p = 0.009), while Service Quality is not significant (? = ?0.146, t = ?0.488, p = 0.629). Equation: Y = 12.341 + 0.631X1 ? 0.146X2Conclusions: P3A technical capability is the main determinant of irrigation performance in irrigation performance while service quality is not significant. Strengthening technical capacity through training in water management, canal maintenance, and scheduling is the priority for sustainable irrigation improvement. Limitations: Limited to respondents reducing generalisability Model explains 34.5% variance other factors such as infrastructure coordination and funding were not included. Contributions: Provides evidence on P3A capability versus service quality effects in Eastern Indonesia irrigation management.
Architectural Metaphor of A.A. Navis’s Works in Designing a Literary Appreciation Center in Yogyakarta Alan Sastera Budiman
Jurnal Teknologi Riset Terapan Vol 4 No 1 (2026): Januari
Publisher : Penerbit Goodwood

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35912/jatra.v4i1.6927

Abstract

Purpose: Yogyakarta, a leading Indonesian literary centre, lacks a purpose-built facility for literary appreciation activities such as reading, discussion, performance, and critical engagement. This study designs a Literary Appreciation Building accommodating these activities through an architectural metaphor inspired by A.A. Navis's Robohnya Surau Kami, translating its literary values into architectural form.Research Methodology: A qualitative design methodology employed a paradigm to concept framework, comprising thematic analysis of the short story, application of Antoniades's in 1990 Intangible Metaphor framework, and site analysis to develop strategies for massing, landscape, circulation, organisation, structure, and materials.Results: The design proposes a two-mass building on a 1.9-hectare site in Pakualaman, Yogyakarta, with a gross floor area of 3,809 m². The main building reflects the collapsing surau through a twisted façade, while the auditorium represents Ajo Sidi through a slanted roof and curved form. A pedestrian bridge connects both masses, symbolising reconciliation.Conclusions: The Intangible Metaphor approach proposed by Antoniades in 1990 effectively translates literary values into architectural design, enabling the building to embody its literary subject.Limitations: This study presents a conceptual design; construction and post-occupancy evaluation are needed to validate its effectiveness.Contributions: This study presents a replicable method for translating literary metaphor into architecture, contributing to the application of intangible metaphor in cultural building design.
Crowd Heatmap Detection at Elephant Park During COVID-19 Using SSD Object Detection Wahid Salahudin; Ismoyo Aji Sasmita; Al Barra Harahap; Nike Dwi Grevika Drantantiyas
Jurnal Teknologi Riset Terapan Vol 4 No 1 (2026): Januari
Publisher : Penerbit Goodwood

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35912/jatra.v4i1.7215

Abstract

Purpose: This study investigates the application of deep learning based object detection to construct a motion heatmap of visitor crowds at Elephant Park, Bandar Lampung, as a monitoring measure during the COVID-19 pandemic. The research aims to determine whether an object detection algorithm can identify crowd density patterns and to evaluate the performance of the detector under varying confidence thresholds.Research Methodology: The Single Shot MultiBox Detector with a MobileNet V1 backbone, pretrained on the Common Objects in Context dataset, was deployed on an NVIDIA Jetson Nano connected to a USB camera positioned at two intersections inside the park. Background subtraction in OpenCV was combined with detected bounding boxes to generate a motion heatmap. Detector performance was evaluated using a confusion matrix across confidence threshold values ranging from 0 to 0.9.Results: The detector achieved a mean average precision of 23.2%, with an accuracy of 0.60, precision of 0.84, recall of 0.63, and F1 score of 0.72 at a confidence threshold of 0.3. A confidence threshold of 0.6 produced the most balanced trade-off for generating a usable motion heatmap, yielding a precision of 0.87.Conclusions: The combined detection and heatmap pipeline successfully visualized visitor flow patterns at both observation points.Limitations: Detection accuracy degraded under intense lighting variation and small pedestrian scale.Contributions: This work offers a low cost, embedded surveillance approach that can inform public space design and health protocol enforcement in open air tourist attractions.
Generalized Summability Methods for Failure Rate and Maintainability Analysis Avishek Shah; Prem Kumar Nayak; Suresh Kumar Sahani
Jurnal Teknologi Riset Terapan Vol 4 No 1 (2026): Januari
Publisher : Penerbit Goodwood

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35912/jatra.v4i1.7805

Abstract

Purpose: This study develops a transparent framework for applying generalized summability methods to sequences of failure-rate and maintainability estimates produced from finite, irregular and noisy operational records.Research Methodology: Cesàro, weighted, Nörlund and exponential means are compared as regularizing transformations rather than as substitutes for a reliability model. The framework specifies exposure-aware rate construction, treatment of censoring and missing intervals, regularity and stability checks, delay diagnostics and a validation design based on simulated sequences, illustrated with model-based curves and a worked calculation.Results: Averaging reduced high-frequency variation in the illustrative sequences but introduced lag and blurred change points. In the worked example, the unweighted mean of interval rates was 0.0167 per hour while the exposure-pooled rate was 0.0133 per hour, showing that the weighting rule can silently redefine the target quantity.Conclusions: Summability is useful as a monitoring layer only after the estimand, exposure and censoring have been defined correctly, and raw values and uncertainty must remain visible.Limitations: No field dataset is used, and all curves are illustrative.Contributions: The study joins classical summability theory with reliability practice through a reproducible decision framework, selection criteria and validation safeguards.
Summability-based Reliability Modelling With Laplace Transforms: Numerical Methods and Optimization Avishek Shah; Prem Kumar Nayak; Suresh Kumar Sahani
Jurnal Teknologi Riset Terapan Vol 4 No 2 (2026): July
Publisher : Penerbit Goodwood

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35912/jatra.v4.n2.p1-19.2026

Abstract

Purpose: This study develops a summability-aware workflow that links reliability modelling, Laplace-domain analysis, numerical inversion and constrained optimization for time-dependent reliability and availability.Research Methodology: The framework covers survival and hazard functions, series and parallel structures, a two-state repair model, transform-domain representations, numerical inversion checks and a reliability-cost optimization formulation. Cesàro averaging is treated as a sequence-smoothing and convergence diagnostic rather than a substitute for a valid inverse transform. A worked example uses stated hypothetical rates.Results: For two components with failure rates of 0.0005 and 0.0010 per hour, reliability at 400 hours was 0.5488 in series and 0.9402 in parallel. Fixed-Talbot and de Hoog inversion of the availability transform converged to round-off error, while Gaver-Stehfest converged more slowly, and the lowest-cost design meeting a 0.90 reliability threshold was not the most reliable one.Conclusions: Summability can help interpret oscillatory numerical sequences, but reliable decisions require sound assumptions, independent checks and validation before optimization.Limitations: All rates and design options are hypothetical, and the models assume independence and constant rates.Contributions: The study offers a reproducible verification protocol and a model-to-decision workflow for student research and early-stage industrial reliability studies.

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