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Journal of Innovation and Technology
Published by Forum Teknik, BKS-PTN Wilayah Barat, Indonesia
ISSN : 27218570     EISSN : 27218562     DOI : https://doi.org/10.31629/jit.v1i1
Core Subject : Engineering,
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Industrial & Manufacturing Engineering Mechanical Engineering
Journal of Innovation and Technology aims to publish original research articles and critical review manuscript in the field of Engineering and Tecnology. The topics are including, but limited to: Mechanical and Manufacturing, Civil and Geodetic Engineering, Electrical and Telecommunication, Chemical and Environmental Engineering, Industrial Engineering, Computer and Information Technology, Materials and Mining, Architecture and Urban Planning, Geophysical Science and Engineering, Physics Science and Engineering, Mathematics and Applied Sciences, Medical Science and Biomedical Engineering, Food Science and Agricultural Engineering, Science Innovation and Interdisciplinary Engineering research.
Arjuna Subject : Teknik (semua kategori) - Tenik Industri dan Manufaktur
Articles 83 Documents
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Investigation of Electrical Voltage Influence on Thermoelectric Cooler (TEC) Performance in a Stacked Cooling Enclosure Sabiqunassabiqun; Alfian Ady Saputra; Eko Wahyu Saputra
Jurnal Inovasi Teknologi Vol 6 No 1 (2025): April
Publisher : Engineering Forum of Western Indonesian Government Universities Board (Forum Teknik, BKS-PTN Wilayah Barat) Indonesia

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Abstract

The Thermoelectric Cooler (TEC) is an environmentally friendly solid-state cooling technology with wide application potential. This study aims to analyze the effect of voltage variation on the thermal performance of a TEC-based cooling system applied to a prototype cooling box. The methodology involved designing a system with eight symmetrically installed TEC units, tested at five voltage levels: 16 V, 18 V, 20 V, 22 V, and 24 V. Evaluated parameters included cold and hot side temperatures, heat absorbed (Qc), and Coefficient of Performance (COP). Experimental results revealed that increasing voltage up to 22 V significantly enhanced system efficiency, with the highest COP of 0.25 and maximum Qc of 5.24 W. However, at 24 V, performance declined due to excessive heat accumulation on the hot side of the TEC, exceeding heat dissipation capacity. In conclusion, an optimal input voltage of 22 V was identified to yield the most efficient cooling performance. These findings support the applicability of TEC technology for compact and sustainable cooling systems.
Vehicle Safety System Integrated with GSM Network (Global System for Mobile Communications) on Vehicle Ignition System Akhmad Riszal; Suryadiwansa Harun; Yanuar Burhanuddin; Abdul Hakim Md Yusop; Martinus; Arinal Hamni; Rizal Adi Saputra; Rizal Nazarrudin
Jurnal Inovasi Teknologi Vol 6 No 1 (2025): April
Publisher : Engineering Forum of Western Indonesian Government Universities Board (Forum Teknik, BKS-PTN Wilayah Barat) Indonesia

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Abstract

This research aims to design and create a sms-based motor vehicle security system with an ATMega 8535 microcontroller. This research utilizes hand phone technology and microcontroller. Making this tool has an economical price to secure motorized vehicles. Important prototypes in making this tool are the ATMega 8535 microcontroller, GSM Modem and HP. In making this tool the first thing to make is to make a microcontroller program for the controller. Making this program uses CV Avr soft ware (Code Vision Avr). After the program is finished, the program is downloaded to the microcontroller. Control is done by the microcontroller when it gets input. The result of this research is to get a vehicle security system that is integrated by the ignition system on a motorcycle. The process of securing a motorized vehicle when it is stolen is, the security system will send sms information that the motorcycle is stolen, the alarm sounds and the ignition system is cut off. To turn off the alarm and start the motorcycle, the owner sends an SMS with the format *ALOF# to the security system and starts the motorcycle normally (Pull the front brake three times then position the key to ON mode).
Implementation of the Biophilic Design Concept to Co-working Space in Bandar Lampung Aprillia Yona Lestary; Panji Kurniawan; Dona Jhonnata
Jurnal Inovasi Teknologi Vol 6 No 1 (2025): April
Publisher : Engineering Forum of Western Indonesian Government Universities Board (Forum Teknik, BKS-PTN Wilayah Barat) Indonesia

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Abstract

The current industrial revolution 4.0 has a major impact on the Indonesian economy, one of which is the emergence of startup business models. The current millennial generation is required to be able to innovate, collaborate and create new discoveries. The need for co-working space is important because it can accommodate these activities with its flexible and collaborative nature. Working indoors continuously for long periods of time can cause nature deficit disorders or reduce human well-being and can cause stress due to lack of interaction with nature. Biophilic design is a solution to reduce stress levels in workers because it has a positive impact on health. The basic concept of biophilic is to connect humans and nature in architecture. This study used descriptive qualitative method. Data collection and data analysis techniques include observation, documentation and literature study through scientific references. The design of the co-working space in Bandar Lampung aims to provide a new space for the young generation to be creative, collaborate and create new discoveries supported by a biophilic approach to reduce user stress levels and support the creative process of innovation. The basic concept of biophilic is applied well in buildings by implementing 14 biophilic design patterns.
The Effect of Fracture Strength of Composite Materials with the Addition of Pineapple Leaf Fiber Nusyirwan Adnan
Jurnal Inovasi Teknologi Vol 6 No 02 (2025): October
Publisher : Engineering Forum of Western Indonesian Government Universities Board (Forum Teknik, BKS-PTN Wilayah Barat) Indonesia

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Abstract

Composite materials with unsaturated polyester matrix reinforced with natural fibres were developed to make biodegradable composite materials so that the waste does not damage the environment. Regarding mechanical strength, natural fibre-based composites are still lower in mechanical strength than composite materials with synthetic fibre reinforcement. These weaknesses include easy cracking when hit because they are brittle and have a small plastic deformation area. Some actions that will be carried out in this study are the addition of pineapple fibres with unsaturated polyesters that can form composites that are resistant to cracking. The addition of pineapple fibers to unsaturated polyesters up to 20% can have the highest fracture strength with a value of K1C = 1.733 MPa.m0.5, whereas pure unsaturated polyester without a mixture of pineapple fibres only has a fracture strength of K1C = 0.779 MPa.m0.5. From the results of the study, the addition of pineapple fibres can increase the fracture strength of polyester materials by 222.47%.
Ergonomic Analysis of a Modified Dishwashing Facility in a Medium Scale Restaurant Achmad Yahya Teguh Panuju; Sandi Kurniawan; Arinal Hamni
Jurnal Inovasi Teknologi Vol 6 No 02 (2025): October
Publisher : Engineering Forum of Western Indonesian Government Universities Board (Forum Teknik, BKS-PTN Wilayah Barat) Indonesia

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Abstract

Dishwashing is a crucial stage in the production process of restaurants, where ergonomic aspects for the operators play an important role in determining overall productivity. To support the performance improvement of small and medium enterprises (SMEs), this study conducted an experimental analysis to evaluate the ergonomic level of dishwashing activities in a restaurant located in Bandar Lampung. Prior to the assessment, modifications had been made to the design of the dishwashing facility. The evaluation was carried out using the Ovako Work Posture Analysis System (OWAS), energy consumption analysis, the Nordic Body Map (NBM) questionnaire, and an investigation of the relationship between ergonomic levels and operator productivity. The results revealed that the modified design significantly improved the ergonomic quality of the facility and led to a measurable increase in operator productivity. These findings demonstrate that workplace design improvements in SMEs can effectively enhance both ergonomics and business performance. 
The Effect of Welding Speed on the Welding Quality AISI 1020 and AISI 1050 Steel Using Shielded Metal Arc Welding Technology Syaipudin Anwar; Nanda Tri Wiranata Nanda; Tarkono Tarkono; Sugiyanto Sugiyanto; A Yudi Eka Risano Yudi
Jurnal Inovasi Teknologi Vol 6 No 02 (2025): October
Publisher : Engineering Forum of Western Indonesian Government Universities Board (Forum Teknik, BKS-PTN Wilayah Barat) Indonesia

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Abstract

Material joining techniques are divided into two categories: similar joints and dissimilar joints. The difference in thermal cycles experienced by each material is the reason why dissimilar welding is more challenging than similar welding. The welding process that joins two materials with different properties is commonly used to improve effectiveness and efficiency in production, as well as to improve product quality. This trend has become popular in the manufacturing industry, including in the manufacture of tailor welded blanks, transportation vehicle frames such as aircraft, trains, and cars, as well as in the manufacture of public and private vehicle accessories such as aircraft panels and exhausts. The materials currently widely used in exploration are stainless steel combined with carbon steel, as well as a mixture of stainless steel and low carbon steel, which is quite challenging to weld but offers the advantages of higher strength, corrosion resistance, and lighter weight. This challenge can be overcome through liquid welding methods, one of which is the "SMAW (Shielded Metal Arc Welding)" technique. This study used variations in welding time at 5, 10, and 10 m/minute. Quality testing was carried out using visual tests, tensile tests, and impact tests, using AISI 1020 steel and AISI 1050 steel. Based on the test results, there was a significant difference in that the welds appeared to be shinier. The tensile strength results were in the form of average strain values for each specimen, which were 0.0705 mm, 0.0487 mm, and 0.1074 mm. The impact test results, which compared toughness values using a predetermined welding time variation of 16.5 joules, showed an average toughness value of 0.1948 J/mm².
The Effect of Welding Current on the Mechanical Properties of AISI 1040 Steel and AISI 1020 Steel in Bimetal Welding Using the Shielded Metal Arc Welding Method with AWS E 7016 Electrodes Aditya Angga Wijaya; Tarkono; Irza Sukmana; Rizal Nazarrudin; Joy Rizki Pangestu Djuansjah
Jurnal Inovasi Teknologi Vol 6 No 02 (2025): October
Publisher : Engineering Forum of Western Indonesian Government Universities Board (Forum Teknik, BKS-PTN Wilayah Barat) Indonesia

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Abstract

This article discusses bimetal welding between AISI 1040 steel and AISI 1020 steel using the Shielded Metal Arc Welding (SMAW) method with AWS E 7016 electrodes. The purpose of the study was to evaluate the quality of the welded joint, including the mechanical properties and microstructure of the bimetal welding results. The use of high-strength AISI 1040 steel and AISI 1020 steel with malleable properties aims to produce a joint that optimizes the characteristics of each material. The welding process was carried out with varying current parameters to determine its effect on the welding results. Testing included tensile testing, hardness testing, impact testing, and microstructure analysis. The results showed that variations in welding parameters affected the mechanical properties of the joint and the distribution of microstructures in the weld zone, heat-affected zone (HAZ), and base metal. The optimal welded joint was obtained by setting certain current parameters that produced maximum tensile strength and even hardness distribution. This study contributes to the development of bimetal welding technology, especially for applications that require a combination of mechanical properties of two types of steel.
Implementation of Exploratory Data Analysis (EDA) in Predicting Customer Churn Decision Levels Using Naive Bayes Algorithm Muhammad naufal hermawan
Jurnal Inovasi Teknologi Vol 6 No 02 (2025): October
Publisher : Engineering Forum of Western Indonesian Government Universities Board (Forum Teknik, BKS-PTN Wilayah Barat) Indonesia

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Abstract

This study aims to explore the use of Exploratory Data Analysis (EDA) for predicting customer churn decisions at service provider companies. Using the Naive Bayes algorithm within the RapidMiner environment, the research analyzes customer behavior patterns to determine key influencing factors. The process involves structured data preprocessing, visualization, and model evaluation through accuracy, precision, recall, and F1-score metrics. The results show that EDA coupled with the Naive Bayes model provides valuable insights and reaches an accuracy of over 82%, making it a reliable decision-support tool for customer retention strategies. This study contributes to data-driven approaches in customer relationship management.
Advanced Failure Analysis of Hydraulic Systems in Volvo Articulated Haulers at Coal Mining Sites: Investigating Steering Cylinder Seal Failure and Brake Accumulator Degradation Syaipudin Anwar; Rizal Adi Saputra; Praise Prasetyo; Kristanto
Jurnal Inovasi Teknologi Vol 7 No 1 (2026): April
Publisher : Engineering Forum of Western Indonesian Government Universities Board (Forum Teknik, BKS-PTN Wilayah Barat) Indonesia

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Abstract

The condition of hydraulic systems is critical to the productivity and safety of heavy equipment in coal mining operations. This study analyzes Hydraulic Systems in Volvo Articulated Haulers at coal mining sites in South Sumatra, Indonesia. Progressive failure of the steering cylinder seal on a Volvo ART A40F, manifested as hydraulic oil leakage and a drop in measured steering pressure from the standard 250 bar to 203 bar; and degradation of the brake accumulator unit on a Volvo ART A40G, causing a low brake pressure warning and a drop in pressure from the normal range of 145-245 bar to 118 bar. Both failures were caused by wear-induced mechanisms exacerbated by the harsh mining environment fine particle contamination, high thermal cycling, and continuous duty cycles. For the A40F, post-repair inspection revealed that the scraper / dust seal had thinned from 7.8 mm (new) to 6.1 mm, allowing the ingress of particles that accelerated piston rod seal wear. For the A40G, three of the seven accumulators had lost their hydraulic oil connections, reducing nitrogen precharge and eliminating pressure reserve capacity. Corrective interventions of seal kit replacement on the A40F and accumulator replacement on the A40G restored operating pressures to 250 bar and 247 bar, respectively. Maintenance records from 2024-2026 revealed that accumulator failures occurred repeatedly each year per unit, indicating inadequate inspection intervals. These findings support a transition to a condition-based maintenance strategy for both system types.
FRP Tank Scrubber Design Optimization Using ASME RTP-1 Standard for Biogas Power Plant: A Case Study of The Tapioca Mill in West Tulang Bawang, Lampung Fahrur Riza Priyana; Muhammad Fikri; Eko Wahyu Saputra; Rizal Adi Saputra
Jurnal Inovasi Teknologi Vol 7 No 1 (2026): April
Publisher : Engineering Forum of Western Indonesian Government Universities Board (Forum Teknik, BKS-PTN Wilayah Barat) Indonesia

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Abstract

The tapioca processing industry in Indonesia holds massive potential for generating renewable energy through Biogas Power Plants. However, the high toxic and corrosive Hydrogen Sulfide gas content necessitates a reliable purification system. This study aims to design and validate the mechanical integrity and process feasibility of a Fiber Reinforced Polymer (FRP) composite Biological Scrubber tank. The case study was conducted at a facility with a 2000 Nm³/h gas flow capacity, utilizing a tank measuring 3.6 m in diameter and 15 m in height. A comprehensive evaluation was performed using an analytical approach and Python-based computational simulations referencing the ASME RTP-1-2023 standard for FRP pressure vessels. The tank design was optimized using a step-tapered wall configuration to withstand combined hydrostatic, internal pressure (0.05 kg/cm²), wind (22.68 km/h), and Zone 2 seismic loads. Volumetric analysis indicates the reactor dimensions provide an Empty Bed Residence Time of 275 seconds and a superficial gas velocity of 0.055 m/s, optimally maintaining the metabolic stability of the desulfurizing bacteria. Mechanically, the step-tapered wall thickness optimization (20 mm at the base to 10.5 mm at the top) achieved 25% material savings while maintaining a Safety Factor > 10, ensuring the design fully meets strict operational safety standards.

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