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Teknika
Published by Sekolah Tinggi Teknologi Warga Surakarta
ISSN : 16936329     EISSN : 23373148     DOI : https://doi.org/10.52561/teknika
Core Subject : Engineering,
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Electrical & Electronics Engineering Industrial & Manufacturing Engineering Mechanical Engineering
Jurnal Teknika merupakan jurnal ilmiah yang menyajikan artikel orisinal tentang pengetahuan dan informasi riset atau aplikasi riset dan pengembangan terkini dalam bidang teknologi. Ruang lingkup Jurnal Teknika meliputi Teknik Mesin, Teknik Elektro, Sistem Informasi, Teknik Industri dan Kimia Tekstil. Design Manufacture Konversi Energi Material Data analysis Artificial Intelligence Virtual Reality Information System Data mining Dessision Support System Instrumentation and Control Electrical (Power) Electronics Engineering Industrial Engineering Optimasi Sistem Produksi Perencanaan Produksi dan Pengendalian Persediaan Penjadwalan dan Manajemen Operasi/Proyek Computer-Integrated Manufacturing System Sustainable Product Design and Manufacturing Penelitian Operasional dan Decision-Making Model Manajemen Teknologi Pengukuran Kerja, Faktor-Faktor Manusia dan Ergonomi Rekayasa dan Pengendalian Kualitas Sistem Logistik dan Supply Chain Management Perancangan dan Pengembangan Produk Concurrent Engineering Analisis Ekonomi Teknik Pemodelan Sistem dan Analisis Simulasi Perancangan Layout Fasilitas Reliability and Maintenance Engineering Sistem dan Teknologi Informasi Rekayasa Pelayanan (Service Engineering) Technopreneurship dan Inovasi Aplikasi Model Stokastik dalam Teknik Industri Aplikasi Metode Metaheuristik dalam Teknik Industri Jurnal ini merupakan sarana publikasi dan ajang berbagi karya riset dan pengembangannya di bidang teknologi. Pemuatan artikel di jurnal ini dialamatkan ke kantor editor. Informasi lengkap untuk pemuatan artikel dan petunjuk penulisan artikel tersedia di dalam setiap terbitan. Artikel yang masuk akan melalui proses seleksi mitra bestari dan/atau editor. Jurnal ini terbit secara berkala sebanyak dua kali dalam setahun (April dan Oktober).
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 121 Documents
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RANCANG BANGUN SISTEM PEMANTAUAN KADAR OKSIGEN DAN BERAT BADAN BAYI PADA INCUBATOR BAYI MENGGUNAKAN BLYNK IOT DAN NODEMCU Muhammad Hisyam Aushaaf; Kusnanto Mukti Wibowo; Farid Ishartom; Abdul Latif; Gema Romadhona
Teknika Vol 10 No 2 (2025): October 2025
Publisher : Pusat Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52561/teknika.v10i2.473

Abstract

Inkubator bayi merupakan alat vital dalam perawatan bayi prematur untuk menjaga suhu tubuh, kelembapan, kadar oksigen, dan memantau berat badan secara stabil. Namun, sistem pemantauan konvensional sering kali belum mampu memberikan data secara real-time maupun terintegrasi dengan sistem peringatan dini. Penelitian ini bertujuan merancang dan membangun sistem pemantauan kadar oksigen dan berat badan bayi pada inkubator menggunakan teknologi Internet of Things (IoT). Sistem ini dibangun dengan sensor MQ-135 untuk mengukur kadar oksigen, load cell untuk berat badan, NodeMCU sebagai mikrokontroler, serta aplikasi Blynk IoT dan LCD sebagai tampilan data. Data dari sensor dikirim secara nirkabel ke aplikasi Blynk dan ditampilkan secara langsung di LCD. Hasil pengujian menunjukkan tingkat akurasi sistem tinggi dengan error rata-rata pengukuran berat hanya 0,40%. Sistem juga mampu memberikan notifikasi suara dan alarm jika kadar oksigen berada di luar rentang aman (19–23%). Alat dan bahan yang digunakan meliputi sensor MQ-135, sensor load cell, modul HX711, NodeMCU, LCD I2C, serta aplikasi Blynk sebagai antarmuka pengguna. Implikasi dari sistem ini adalah tersedianya alat bantu pemantauan yang efektif, akurat, dan real-time bagi tenaga medis, sehingga mampu meningkatkan kualitas layanan dan keselamatan bayi prematur di ruang perawatan intensif rumah sakit.
A PENGARUH VARIASI KOMPOSISI CAMPURAN CARBON ARANG CANGKANG KEMIRI DAN NATRIUM KARBONAT TERHADAP KEKERASAN DAN KEAUSAN PADA MILD STEEL DENGAN PROSES PACK CARBURIZING David Bintang Pradana; Agung Supriyanto; Afif Faishal
Teknika Vol 10 No 2 (2025): October 2025
Publisher : Pusat Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52561/teknika.v10i2.602

Abstract

This study aims to determine the effect of variations in the composition of candlenut shell charcoal and sodium carbonate (Na?CO?) mixtures on mild steel’s hardness and wear resistance through the pack carburising process. The composition variations used were 60%:40%, 70%:30%, 80%:20%, and 90%:10% between coconut shell charcoal and Na?CO?. The carburising process was carried out at 930 °C to allow carbon diffusion to the steel surface, followed by Vickers hardness testing, Ogoshi wear testing, and surface chemical composition analysis using EDX. The results showed that pack carburising treatment significantly increased the hardness of the steel compared to the initial material, with the highest hardness (231.46 HV) obtained at a composition of 80% coconut shell charcoal and 20% Na?CO?. In addition, wear resistance also increased in the 90%:10% composition variation, with a specific wear value of 0.000029103 mm³/kg.m. EDX analysis indicated an increase in carbon content on the steel surface, proving the success of the carbon diffusion process.
DESIGN AND IMPLEMENTATION OF A PIEZOELECTRIC PEDESTRIAN-POWERED ENERGY HARVESTING SYSTEM FOR SUSTAINABLE URBAN INSTALLATIONS Muhammad Qamarul Islam; Ruzlaini Ghoni; Mohd Tarmizi Ibrahim; Budi Nugroho
Teknika Vol 10 No 2 (2025): October 2025
Publisher : Pusat Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52561/teknika.v10i2.611

Abstract

This project proposes integrating a pedestrian-powered system into a public installation to create a renewable energy source in urban environments. The system utilizes piezoelectric sensors embedded in the sidewalk to convert mechanical energy from footsteps into electrical energy, which is then used to power lights and display kinetic movement in the art installation. The main goal of this project is to provide a participatory, environmentally friendly, and sustainable solution in the form of an interactive artwork, while reducing dependence on conventional energy sources. Test results show that the greater the applied load, the higher the generated voltage. The lowest voltage recorded was 11.76 mV at a weight of 50 kg, while the highest voltage reached 315.16 mV at a weight of 90 kg, with an average voltage of 168.46 mV for the load range of 50–90 kg. These findings demonstrate that piezoelectric technology has great potential as an energy harvesting system in public areas, as it can provide power for energy-efficient devices while enhancing the aesthetic quality and awareness of sustainable energy in urban spaces.
IoT IMPLEMENTATION BASED ON POWER QUALITY NETWORK ANALYZER FOR 3-PHASE INDUCTION MOTOR CONTROL Muhammad Afiq Aiman; Ammar Husaini Hussian; Mohd Tarmizi Ibrahim; Slamet Pambudi
Teknika Vol 10 No 2 (2025): October 2025
Publisher : Pusat Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52561/teknika.v10i2.612

Abstract

This study presents the design and implementation of a Power Quality Network Analyzer (PQNA) employing an ESP32 microcontroller to monitor and analyze key power quality parameters, including voltage, current, power factor, and total harmonic distortion (THD) for each phase of a three-phase induction motor. Traditional monitoring systems rely on manual or fixed data acquisition methods, which are inadequate for achieving efficient real-time data analysis. In contrast, the proposed system utilizes the RS-485 communication protocol, ensuring robust and reliable industrial data transfer, and functions as a data gateway that transmits all acquired parameters to the Thinger.io cloud platform for real-time visualization and analytics. This configuration enables enhanced diagnostic capabilities and predictive maintenance, improving system reliability and operational efficiency. Furthermore, the project demonstrates the potential of IoT integration in enabling remote assessment of power quality, thereby minimizing motor downtime and facilitating data-driven decision-making for performance optimization in industrial environments. The proposed framework also contributes to the advancement of intelligent industrial automation, emphasizing how real-time data analytics can significantly enhance productivity and sustainability.
PERFORMANCE ANALYSIS OF FOOTWEAR SENSORS FOR VOLTAGE MONITORING Muhamad Aiman; Ruzlaini Ghoni; Mohd Tarmizi Ibrahim; Fariyono Fariyono
Teknika Vol 10 No 2 (2025): October 2025
Publisher : Pusat Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52561/teknika.v10i2.613

Abstract

Advances in wearable technology are driving innovation in efficient, self-powered biomechanical monitoring systems. One promising approach uses piezoelectric sensors to generate energy while detecting foot (plantar pressure) during physical activity. This study aims to design and test a piezoelectric-based insole system capable of performing dual functions: harvesting mechanical energy from footsteps and analyzing fatigue patterns and gait asymmetry. The research used an experimental approach involving 10 male respondents aged 15–31. Each insole was equipped with four DLAY piezoelectric sensors placed on the heel and forefoot of the right and left feet, and connected to a Raspberry Pi Pico RP2040 microcontroller for voltage data acquisition. The data was analyzed using voltage changes to indicate foot pressure distribution and muscle fatigue. The results showed that the system could generate voltages between 0.025 V and 0.082 V, with an average harvested power of 4.8mW. 70% of respondents experienced decreased voltage in one leg, indicating unilateral fatigue and gait imbalance. Respondent 10 showed the most significant voltage decrease in the left heel sensor (<0.03 V after 1000 seconds), while the right foot remained stable (0.045–0.055 V). In contrast, Respondent 5 showed stable and symmetrical voltage distribution throughout the test session.
ANALISIS DAYA AKTIF, KONSUMSI ENERGI, DAN BIAYA LISTRIK MOTOR GM-315 PADA COOLING TOWER DI PT. POLYCHEM INDONESIA TBK Anggie Maulia; Bagus Dwicahyono
Teknika Vol 11 No 1 (2026): April 2026
Publisher : Pusat Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52561/teknika.v11i1.615

Abstract

Polychem Indonesia Tbk is a chemical industry company that requires a large amount of electrical energy to support its production operations, one of which is in the cooling tower system. This study analyzes the GM-315 three-phase induction motor used to drive the cooling tower pump to calculate the active power, energy consumption, and electricity costs incurred. This research uses a descriptive quantitative approach with measurements of current and voltage from the actual GM-315 motor obtained from the soft starter. The measurement results show that the GM-315 motor has active power ranging from 163.02 kW to 176.82 kW, with energy consumption reaching 4,243.68 kWh per day under the highest load condition. The electricity cost calculations show that the highest cost occurred in the GM-315 A motor, amounting to Rp 4,229,845.60 per day. This study aims to provide a clearer picture of energy consumption and costs that can be used to improve energy efficiency and electricity cost management at PT. Polychem Indonesia Tbk.
ANALISIS SELISIH SUHU KOMPONEN PANEL LVMDP MENGGUNAKAN ALAT INFRARED THERMOGRAPHY DI PT. DONGJIN INDONESIA Rovino Alghafari; Desmira Desmira
Teknika Vol 11 No 1 (2026): April 2026
Publisher : Pusat Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52561/teknika.v11i1.619

Abstract

Low Voltage Main Distribution Panel (LVMDP) is a vital component in industrial electrical distribution systems. Its main function is to regulate the central power line for all equipment in an industrial production facility. Because of its very important role, every component inside the LVMDP needs to be monitored intensively. This panel operates under a heavy load, causing its temperature to rise. One method to maintain the condition of the LVMDP is by using infrared thermography equipment. PT. Dongjin Indonesia utilizes this tool to monitor the temperature of each component in the panel. The temperature of these components can be monitored directly. The measurement results show a temperature difference of 26.5 °C, with the lowest temperature reaching 4 °C. This temperature is still well below the minimum operating temperature limit of 50 °C. This indicates that the components of the LVMDP panel at PT. Dongjin Indonesia is in optimal condition and ready to continue operating. By regularly monitoring the temperature, the company can prevent damage that could disrupt productivity and the safety of the production process. Thus, the use of infrared thermography provides significant advantages in maintaining the performance of LVMDP and ensuring the smooth operation of the industry.
SISTEM INTERLOCK PADA MESIN HOT SAW DI AREA SECTION MILL PT. KRAKATAU BAJA KONSTRUKSI Andi Purwanto; Mohammad Fatkhurokhman
Teknika Vol 11 No 1 (2026): April 2026
Publisher : Pusat Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52561/teknika.v11i1.622

Abstract

This study discusses the implementation of an interlock system on the Hot Saw machine at the Section Mill area of PT. Krakatau Baja Konstruksi as an effort to improve operational safety and efficiency during the hot steel cutting process. The Hot Saw operates under extreme conditions of high temperature and speed, thus requiring a reliable safety mechanism to prevent workplace accidents and equipment damage. The research employed a descriptive-analytical method, which included literature review, field observation, system description, and descriptive analysis. Data were obtained through direct observation of the Hot Saw operation and its interlock components, such as limit sensors, safety switches, a control system based on Siemens S7-1500 PLC, and standard operational procedures. The findings indicate that the implemented interlock system ensures the machine operates only when all safety conditions are fulfilled and automatically stops the process if anomalies or system failures are detected. The integration of the alarm failure main drive saw feature also enhances operator responsiveness in identifying and addressing system malfunctions. Overall, the interlock system significantly contributes to improving work safety, machine reliability, and production continuity in the steel industry environment.
PENGARUH VARIASI JARAK PITCH SUDU TURBIN SCREW PADA KEMIRINGAN LINTASAN 45° TERHADAP OUTPUT DAYA Muhammad Ghiffary Zain; Arif Setyo Nugroho
Teknika Vol 11 No 1 (2026): April 2026
Publisher : Pusat Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52561/teknika.v11i1.417

Abstract

This study investigates how changes in the pitch distance of the screw turbine blades at an orbital tilt angle of 45° affect power output. The Archimedean screw turbine is a promising technology for small-scale hydropower generation, but further research is still needed to optimize its design. This research focuses on two main parameters: pitch blade and pitch track 45°. The research methods include laboratory and field-scale simulations with pitch variations of 130 mm, 150 mm, and 100 mm. Measurements of power and turbine efficiency have been conducted. Data analysis used descriptive and inferential statistical techniques, including analysis of variance (ANOVA) to test the significance of differences between pitch distance variations, and regression analysis to model the relationship between pitch distance and turbine performance parameters. The research shows that a pitch of 150 mm provides optimal performance. At DC load, a maximum torque of 15.2 Nm, a maximum output of 750 W, a maximum turbine efficiency of 82%, and a maximum PLTMH efficiency of 75% are achieved. Meanwhile, at AC load, a maximum torque of 14.8 Nm and a maximum output of 72 are achieved.
STUDI PARAMETER CUTTING PADA PROSES TURNING MATERIAL TITANIUM GRADE 2 Burhanudin Burhanudin; Ainun Jannah; Haikal Haikal; Bambang Supriyanto
Teknika Vol 11 No 1 (2026): April 2026
Publisher : Pusat Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52561/teknika.v11i1.461

Abstract

Titanium merupakan salah satu material logam yang memiliki kekuatan spesifik tinggi, ketahanan korosi yang sangat baik, serta mampu bekerja dalam kondisi ekstrem. Namun, karakteristiknya yang keras dan memiliki konduktivitas termal rendah menjadikannya sebagai material yang sulit untuk dikerjakan (hard-to-machine), terutama dalam proses pengeboran. Masalah umum yang sering terjadi adalah kualitas permukaan yang buruk dan pembentukan chip yang tidak stabil. Penelitian ini bertujuan untuk mengkaji pengaruh variasi parameter cutting terhadap hasil pengeboran pada material titanium menggunakan mesin CNC bubut. Parameter yang divariasikan meliputi spindle speed (500, 700, 900 rpm) dan feed rate (0,1; 0,2; 0,3 mm/rev). Fokus utama pengujian adalah tingkat kekasaran permukaan (Ra) dan morfologi chip yang dihasilkan. Hasil pengujian menunjukkan bahwa kombinasi spindle speed 700 rpm dan feed rate 0,2 mm/rev menghasilkan kekasaran permukaan terendah sebesar 0,98 µm dan chip dengan bentuk kontinu yang mencerminkan proses pemotongan stabil. Feed rate yang terlalu rendah maupun terlalu tinggi, terutama pada kecepatan spindle ekstrem, justru menghasilkan nilai Ra yang tinggi dan chip yang tidak stabil. Dengan demikian, pemilihan parameter pemotongan yang seimbang menjadi kunci untuk mencapai hasil pengeboran optimal pada material titanium. Penelitian ini diharapkan memberikan kontribusi praktis dalam optimalisasi proses machining material sulit dikerjakan (hard-to-machine) seperti titanium di industri manufaktur presisi.

Page 12 of 13 | Total Record : 121

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