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INDONESIA
Jurnal Surya Teknika
Published by Universitas Muhammadiyah Riau
ISSN : 23546751     EISSN : 27237222     DOI : 10.37859
Core Subject : Engineering,
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering
a media of communication and reply forum for scientific works especially concerning the fields of industrial technology, machinery, and automotive.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 409 Documents
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Analisis Preventive Maintenance Motor Condensate Extraction Pump 10,5kv Unit 6 di PT PLN Indonesia Power UBP Suralaya Rahyadi, Sandi; Desmira , Desmira
SURYA TEKNIKA Vol 12 No 2 (2025): JURNAL SURYA TEKNIKA
Publisher : Fakultas Teknik UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jst.v12i2.10445

Abstract

Penelitian ini menganalisis preventive maintenance pada motor Condensate Extraction Pump (CEP) 10,5 kV Unit 6 di PT. PLN Indonesia Power UBP Suralaya. Tujuannya adalah mengevaluasi kondisi bekerja motor dengan mengukur temperatur belitan, temperatur bearing, dan getaran (vibrasi) sebagai tanda utama kinerjanya. Penelitian dilakukan dengan cara mengamati langsung, wawancara oleh teknisi, membaca buku referensi, serta menganalisis data hasil pengukuran menggunakan alat thermogun dan vibration meter. Hasil menunjukkan temperatur belitan berkisar antara 41°C hingga 52°C (batas maksimum 110°C), temperatur bearing berkisar antara 38°C hingga 53°C (batas maksimum 90°C), dan getaran (vibrasi) berkisar antara 0,35 hingga 0,60 mm/s, yang jauh di bawah ambang batas maksimum 2,8 mm/s sesuai SNI ISO 10816-3:2011. Persentase error untuk ketiga parameter tersebut berada di bawah 4%, yang menunjukkan motor bekerja dalam kondisi stabil dan efisien. Dengan demikian, penerapan preventive maintenance terbukti efektif dalam menjaga kinerja sistem dan memperpanjang masa pakai motor.
Pengaruh Paparan Gelombang Ultrasonik pada Ekstraksi Bunga Telang Terhadap Kandungan Senyawa Flavonoid Bilqis Widiawati, Febriana; Mustikaningrum, Mega
SURYA TEKNIKA Vol 12 No 2 (2025): JURNAL SURYA TEKNIKA
Publisher : Fakultas Teknik UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jst.v12i2.10489

Abstract

The study aims to determine the effect of ultrasonic wave exposure on the extraction of butterfly pea flowers (Clitoria ternatea L.) toward flavonoid compound content. The method used was Ultrasonic Assisted Extraction (UAE) with variations in temperature 30oC, 40oC, 50oC, extraction time 20, 25, 30 minutes, and ethanol solvent volume 50, 100, 150 ml. analysis was carried out using a UV-Vis Spectrophotometer. The results showed that the optimal extraction time was 25 minutes with a yield of 45,51%, the optimal temperature was 40oC with a yield of 24,6%, and optimal solvent volume was 100 ml with a yield of 43,05%. Kinetic analysis indicated that the Pseudo Second Order model was the most suitable with a regression value of 0,99989. The extraction process was dominatetd by physical diffusion with an activation energy of 8,4621 kJ/mol, indicating that increasing temperature enhances extraction rate without significant degradation of active compounds.
Evaluasi Penerapan Pengendalian Kualitas pada Proses Produksi UKM Sepatu Kulit di Kota Batam Sumantika, Arsyad; Sirait, Ganda; Paskaria Lodya Tarigan , Elsya; Aji Prasetyo, Bahariandi
SURYA TEKNIKA Vol 12 No 2 (2025): JURNAL SURYA TEKNIKA
Publisher : Fakultas Teknik UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jst.v12i2.10513

Abstract

This study evaluates quality control in leather shoe Small and Medium-sized Enterprises (SMEs) in Batam City using Failure Mode and Effects Analysis (FMEA) and Root Cause Analysis (RCA) methods. The background addresses product quality challenges affecting SME reputation and competitiveness. The research aims to identify potential failure modes, calculate Risk Priority Numbers (RPN), determine root causes, and formulate improvement recommendations. The methodology involves a hypothetical case study, applying FMEA to identify failure modes (Severity, Occurrence, Detection) and RCA (5 Whys, Fishbone Diagram) for root causes. FMEA results highlight "untidy/broken stitches" (RPN 360) and "cutting pattern errors" (RPN 336) as top priorities. RCA identified root causes such as insufficient operator training, suboptimal raw material procurement policies, inadequate machine maintenance, operator fatigue, and dull cutting tools. The study concludes by successfully identifying critical areas and root causes of quality issues. Recommendations include enhancing training, standardizing processes, preventive maintenance, and investing in precise equipment for SMEs.
Implementasi HarmonicBalance.jl untuk Menentukan Performansi Isolator Getaran Nonlinear Quasi-Zero Stiffness Adriyan, Adriyan
SURYA TEKNIKA Vol 12 No 2 (2025): JURNAL SURYA TEKNIKA
Publisher : Fakultas Teknik UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jst.v12i2.10574

Abstract

Isolasi getaran merupakan sebuah teknik pengendalian getaran untuk mereduksi transmisi getaran dari sumber gangguan ke objek yang diisolasi. Kajian ini menyajikan penentuan performa suatu isolator nonlinier pada komponen gaya pemulih dan gaya peredamannya berdasarkan variasi redaman nonlinier dan amplitudo eksitasi. Selanjutnya, eksitasi harmonik dikenakan ke isolator dan jawab steady-state dalam ranah frekuensi ditentukan melalui penerapan metode harmonic balance (HB). Berdasarkan penerapan metode ini diperoleh transmisibilitas isolator yang digunakan sebagai metrik untuk menentukan performanya. Metode HB ini digunakan melalui implementasi paket program Julia yang bernama HarmonicBalance.jl. Berdasarkan simulasi yang telah dilakukan diketahui bahwa redaman nonlinier memberikan dampak yang signifikan bagi isolator untuk mereduksi transmisibilitas terutama ketika amplitudo eksitasi besar.
Metode Penurunan Resistansi Pentanahan Arrester pada Gardu Distribusi untuk Meminimalisir Terjadinya Ground Potensial Rise (GPR) Triani Mardalena Sari; Dian Eka Putra; Raden Ahmad Yani; Nofiansah
SURYA TEKNIKA Vol 13 No 1 (2026): JURNAL SURYA TEKNIKA
Publisher : Fakultas Teknik UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jst.v13i1.11219

Abstract

An effective arrester earthing system at distribution substations is crucial for conducting lightning currents to prevent Ground Potential Rise (GPR). Initial measurements at PD.0431 substation showed a resistance of 6.7 Ω, exceeding the PUIL 2020 limit of 5 Ω. This study aims to reduce resistance by adding parallel rod electrodes. Measurements were taken using an Earth Tester with the potential drop method, while GPR, touch voltage, and step voltage analyses were simulated with CYMGrd (1000 A fault current). The results showed that the addition of four electrodes reduced the resistance from 6.08 Ω to 1.97 Ω, meeting the standard. Simulations showed a 52.7% reduction in GPR, a 73.9% reduction in touch voltage, and a 74.7% reduction in step voltage. The post-improvement ground potential contour was also more uniform. This study proves that the parallel electrode configuration effectively reduces resistance while mitigating GPR risks. This method is recommended for substations with similar characteristics.
Techno-Economic Analysis of Betaine Surfactant Production from Hydrogenated Palm Kernel Oil: A Preliminary Plant Design Oktariandi. M, Vito; Agustia Putri, Wahyuni; Saridiyah, Saridiyah; Legawati, Lisa; Zulfansyah, Zulfansyah
SURYA TEKNIKA Vol 13 No 1 (2026): JURNAL SURYA TEKNIKA
Publisher : Fakultas Teknik UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jst.v13i1.11248

Abstract

Indonesia's high dependency on betaine surfactant imports, which grow at 8.15% per year, necessitates the development of domestic production based on local raw materials. This study aims to design an Amidopropyl Betaine plant from Hydrogenated Palm Kernel Oil (HPKO) with a capacity of 20,000 tons per year. The production process consists of three main stages: amidation reaction (85% conversion), separation and purification via distillation, and carboxymethylation reaction (99% conversion). An economic feasibility analysis yielded a Net Present Value (NPV) of Rp 325 billion, Return on Investment (ROI) of 36.93%, Payback Period (PBP) of 1.53 years, Internal Rate of Return (IRR) of  29,38%, and Break-Even Point (BEP) of 35.84%, indicating that the plant is highly feasible and profitable. This study concludes that the establishment of an HPKO-based betaine surfactant plant is not only techno- economically feasible but also strategic for reducing import dependency and adding value to the national palm oil industry.
Perencanaan Persediaan Bahan Baku Biji Kopi Menggunakan Metode Min dan Max Pada UMKM Deli Coffee Zaharuddin, Zaharuddin; Marisden, Giat Damei; Walady Utama, Denny; Meuthia Hasibuan, Yetti
SURYA TEKNIKA Vol 13 No 1 (2026): JURNAL SURYA TEKNIKA
Publisher : Fakultas Teknik UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jst.v13i1.11259

Abstract

Inventory of raw materials is something that must be considered. In order for a production process to run smoothly, the company must have a good supply of raw materials so that production continues and demand can be met. Inventories are stored materials or goods that will be used to fulfill certain purpose. Focusing on small and medium enterprises (SMEs) which are included in the food and Baverage business category. Deli Coffee UKM which produces various types of coffee beans. Ordering raw materials made by SMEs is still relatively unplanned. Orders are made when there is a small supply of materials in the warehouseand orders from suppliers and 15 days for new orders to arrive. Data collection methods used are primary and secondary data. Min-max supply chain of coffee beans for safety stock is 151, 93 kg, minimum inventory of 223,59 kg, maximum inventory of 4283,33 kg, and reorder point of 1989,74 kg and order quantity per period of 223 order frequency of 11 times, and total cost of IDR 8.375.642.000.
Integrasi Face Detector dengan IoT untuk Sistem Keamanan Pintu Rumah Pintar Jaka Pramana, Felista; Pujiastutik, Rini
SURYA TEKNIKA Vol 13 No 1 (2026): JURNAL SURYA TEKNIKA
Publisher : Fakultas Teknik UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jst.v13i1.11279

Abstract

The high incidence of home burglaries in Indonesia has driven the need for the development of more modern and effective security systems compared to conventional manual locks, which still have many weaknesses. This research develops an Internet of Things (IoT)-based home door security system by implementing face detection as the primary authentication method. The system is designed using an ESP32 as the main controller, integrated with an ESP32-CAM for face recognition, a 4x4 keypad as a PIN input medium, an SW-420 vibration sensor to detect forced break-in attempts, a buzzer as a warning alarm, and a solenoid door lock as the door-opening and locking actuator. The system operates with two authentication mechanisms, namely face recognition and PIN input, thereby providing layered security. If the authentication process is successful, the door will open automatically and the system will send a notification reading "Door opened, welcome" via the Telegram application to the homeowner. Conversely, if authentication fails or the vibration sensor detects vibrations indicating a break-in attempt, the system will activate the buzzer as a local alarm and send a real-time warning message reading "Danger alert, there is an unauthorized person at the house." Test results show that the system is capable of recognizing registered faces with a good level of accuracy and sending notifications with a delay of less than 3 seconds. With its dual authentication features and real-time notifications, this system is considered capable of significantly improving home security compared to conventional methods.
Pengendalian Kualitas Proses Pembuatan Botol 600 ml Menggunakan Metode Statistical Process Control (SPC) dan Failure Mode and Effect Analysis (FMEA) Rahmayanti, Dina; Wirdianto, Eri; Meuthia, Yumi; Kurnia Sandi, Devid
SURYA TEKNIKA Vol 13 No 1 (2026): JURNAL SURYA TEKNIKA
Publisher : Fakultas Teknik UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jst.v13i1.11283

Abstract

Product quality is the main factor determining the competitiveness of bottled drinking water (AMDK) companies. PT Amanah Insanillahia, as one of the AMDK producers, still faces problems related to the high number of defective products, especially in the 600 ml bottle manufacturing process, with an average defect percentage of 1.40%, exceeding the company’s target of 1.00%. This study aims to identify the dominant types of defects and propose quality control improvement measures for the 600 ml bottle manufacturing process. The research data consist of primary and secondary data collected through observation, interviews, and production documentation. The methods used in this study are Statistical Process Control (SPC) supported by process mapping, Critical to Quality (CTQ), check sheets, Pareto diagrams, and fishbone diagrams, as well as the Failure Mode and Effect Analysis (FMEA) approach. The results show that the Body/Bottom wavy defect is the most dominant type of defect based on Pareto analysis. According to the FMEA analysis, the main causes of defects originate from machine factors, work methods, and human factors. The proposed priority improvements include the preparation of Standard Operating Procedures (SOPs), clear work instructions, and operator training to reduce defect rates and improve product quality.
Studi Perbandingan Kinerja Bohlam LED DC dan Bohlam LED AC untuk Pencahayaan Sistem PV Off-grid Rinaldi, Reza Satria; Anggraini, Ika Novia; Herawati, Afriyastuti; Ladio, Wahyu Apriali
SURYA TEKNIKA Vol 13 No 1 (2026): JURNAL SURYA TEKNIKA
Publisher : Fakultas Teknik UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jst.v13i1.11293

Abstract

The use of DC distribution is considered more efficient than AC in off-grid PV systems because it reduces energy conversion losses, especially in loads such as LED lights. A comparative study of DC and AC LED lighting is needed to improve the efficiency of offgrid PV systems. This study compares the performance of DC and AC LED bulbs for lighting a 12 V off-grid PV system. Testing on a 12 V off-grid PV system was carried out by collecting data in the form of DC power from a 12 V VRLA battery and light intensity (lux) produced by samples of DC and AC LED bulbs with nominal power of 10 W, 20 W, and 30 W, with uniform technical specifications. The results of the study indicate that DC LED bulbs are more efficient than AC LED bulbs both in power consumption from off-grid PV systems and in producing light. Thus, lighting in a 12 V off-grid PV system is more efficient using DC LED bulbs.

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