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All Journal Jurnal Ilmiah Universitas Batanghari Jambi Machine : Jurnal Teknik Mesin Jurnal Pengelolaan Laboratorium Pendidikan INVENTORY : Industrial Vocational E-Journal On Agroindustry Jurnal Teknologi dan Manajemen Journal of Fibers and Polymer Composites Journal of Industrial Community Empowerment
Kadex Widhy Wirakusuma
Politeknik Industri Logam Morowali
Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering

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Perbandingan Panas dalam Implementasi Sistem Efek Rumah Kaca dan Sistem Tradisional pada Pengeringan Biji Kopi Amiruddin Amiruddin; Hendi Lilih Wijayanto; Kadriadi Kadriadi; Kadex Widhy Wirakusuma
Jurnal Ilmiah Universitas Batanghari Jambi Vol 22, No 1 (2022): Februari
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/jiubj.v22i1.1819

Abstract

Indonesia as a country with the largest tropical climate in the world after Brazil, from 27 percent of the tropical zones in the world, Indonesia has 11 percent of tropical areas, including South Sulawesi which is a coffee-producing area which has an area of 690,283 hectares (ha) consisting of People's Plantations 656,067 ha. (95%), Private Basar plantations 19,077 (2.8%), State Large Plantations 15,139 ha (2.2%), South Sulawesi coffee producing areas, especially in Bantaeng spread across Tompo Bulu District. Most of the coffee in Bantaeng is grown in a mixed garden system. However, the drying process has a relatively long time span, so that the coffee harvest has a low level of dryness and the selling price is also not optimal. From these problems, the authors compare the temperature in the dryer with the greenhouse effect system and traditional drying, which is 10% - 30% degrees Celsius hotter using the greenhouse effect. For the efficiency level, the drying time between the greenhouse effect system and traditional drying is about 5-12 days faster using the greenhouse effect drying system.
Pengaruh Variasi Daya Pompa pada System Pendinginan TEG terhadap Tegangan yang Dihasilkan TEG Hendi Lilih Wijayanto; Amiruddin Amiruddin; Kadriadi Kadriadi; Kadex Widhy Wirakusuma; Nugroho Tri Atmoko
Jurnal Ilmiah Universitas Batanghari Jambi Vol 22, No 1 (2022): Februari
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/jiubj.v22i1.2017

Abstract

The amount of heat energy wasted on the furnace wall is of concern to researchers who are trying to utilize the heat energy wasted from a furnace wall as a generator or source of electricity. The waste heat from the combustion in the furnace can now be used as a source of electricity. The waste heat is converted into electricity using a thermoelectric generator, the TEG generator is an electrical generator device that converts heat (temperature difference) directly into electrical energy. In this research, the heat used is the cylindrical wall of the furnace with variations in the size of the pump that flows the coolant to the waterblock, to determine the efficiency and magnitude of the power pump used to cool the hot side of the TEG, which produces a high temperature difference and also produces large electrical energy. thermoelectric generator module reused 4 pieces SP1848 27145 SA module.
Pendekatan Metode ISMO Dalam Menyusun Penjadwalan Perawatan Gearbox dan Rantai Pengangkut Ore Departemen Circular Sintering PT. IRNC Kadex Widhy Wirakusuma; Ari Pranata Primisa Purba; Katon Muhammad
INVENTORY: Industrial Vocational E-Journal On Agroindustry Vol 4, No 1 (2023): Published in June 2023
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/inventory.v4i1.110

Abstract

PT. IRNC is a company that operates in the smelter industry. One of the company's production processes is to produce and distribute raw materials in the form of wet Ore into iron and steel products. The distribution of raw materials in this company is continuously ongoing, leading to frequent failures in the functions of the gearbox and the chain of transportation of mineral raw materials. The company has a bustling machine activity but is not associated with the preventive maintenance activities of the machine. One of the activities that can solve the maintenance problem is scheduling preventative maintenance activities and periodic repairs to the gearbox and chain carrier of raw materials. Preventive maintenance is the maintenance activity on the machine which has the purpose of preventing the occurrence of damage, or the maintenance method for the machine planned for the prevention to extend the life of the machine as well as to avoid the failure of function on the machinery that may occur during the production process. This research aims to provide recommendations for scheduled maintenance of the machine with a preventive maintenance approach with the ISMO Method.  The results of the research carried out based on the type of work performed inspection (I) and small repair (S) obtained results respectively for gearbox 13 times inspections (I), and 21 times small repairs (S), while for the chain of transportation of Ore 8 times inspection and four times small reparations, and the number of workers involved 21 people, with the total labor costs of Rp—863,820 million per year.
Peningkatan Kompetensi Pengelasan Shielded Metal Arc Welding Bagi Masyarakat Desa Makarti Jaya Kabupaten Morowali Kadriadi Kadriadi; Kadex Widhy Wirakusuma; Jumaddil Hair; Muhammad Alfian; Fathurrasuli Fathurrasuli; Vincentius Sulistyo Aji Nugroho; Yusdianto Yusdianto
Journal of Industrial Community Empowerment Vol 2, No 2 (2023): Published in October 2023
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/jice.v2i2.231

Abstract

Mekarti Jaya Village is located in the PT Industrial Area. IMIP, the need for industrial workers in the PT area IMIP continues to increase as the investment value in the area increases. To prepare the people and youth of Mekarti Jaya village to be able to take advantage of job opportunities in industries located in the PT area. IMIP needs to carry out training to increase competency, especially in the field of Shielded Metal Arc Welding (SMAW) welding position 2F. The selection of SMAW welding training materials was based on survey results, in which the need for welding specialist workers was the greatest need for industries in the PT area. IMIP. Training activities are carried out for approximately 1 month, starting with the preparation, implementation, and training results stages. The activities were carried out on February 27–29, 2022. Training activities were carried out at the Morowali Metal Industry Polytechnic Machinery Maintenance Engineering study workshop. The training was attended by ± 16 young people and residents of the village of Mekarti Jaya. The results of the training carried out were an increase in understanding and knowledge before and after the training activities were carried out; this was shown by the results of the constant shape of the ridges, welding position 2F, and the results of the post-test.
RANCANG BANGUN ALAT SETTING ALIGNMENT RODA GIGI SEBAGAI MEDIA PEMBELAJARAN DI LABORATORIUM PERBAIKAN DAN PEMELIHARAAN MESIN Kadriadi Kadriadi; Angga Bahri Pratama; Kadex Widhy Wirakusuma; Jandri Fan HT Saragi; Jeri Ariksa; Muhammad Alfian; Yudi Siswanto
Machine : Jurnal Teknik Mesin Vol 9 No 2 (2023): Machine : Jurnal Teknik Mesin
Publisher : Jurusan Teknik Mesin Fakultas Sains dan Teknik Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jm.v9i2.4509

Abstract

Alignment is a technique used to maintain machine components that rotate or transfer power so they can operate as effectively as possible and prevent damage to other machine components from errors made during installation or maintenance. Alignment is a maintenance activity that is often carried out on machines in industry and machines within the Morowali Metal Industry Polytechnic, especially in the Mechanical Maintenance Engineering Study Program. Competency in the alignment of gears and bearings is very much needed for prospective mechanics in the industry. The purpose of making this tool is as a simulation tool for learning alignment to achieve straightness and centricity between two rotating shafts (drive and driven shaft) to prevent friction, vibration, and other problems that can reduce tool life and, of course, increase expenditure costs. for repair or replacement of heavy equipment. In the process of designing this alignment tool, a drive method is used in the form of a sprocket and chain, where the link between the drive motor and the shaft to be moved is the sprocket and chain method. This research serves to help produce a design by considering the user's perspective so that the design results can be useful effectively. From the test results, the gear alignment setting tool can function well with the help of an inverter so that motor rotation can be reduced and can be controlled according to the desired conditions. The previous alignment setting tool had an RPM: of 1450.8 and the alignment setting tool that was made had an RPM: of 1455.7 with a frequency of 50 Hz so it can be concluded that this tool can be used for practical work in machine repair and maintenance laboratories.
Implementasi CodeIgniter 4 untuk Pengelolaan Inventaris, Peminjaman dan Monitoring Mesin Berbasis Web di Laboratorium Pemesinan Politeknik Industri Logam Morowali Abduh Malik Alfafa; Angga Tegar Setiawan; Kadex Widhy Wirakusuma
Jurnal Pengelolaan Laboratorium Pendidikan Vol. 8 No. 2, Juli 2026
Publisher : UPT Laboratorium Terpadu, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jplp.8.2.122-135

Abstract

Machining laboratories play a crucial role in vocational education, particularly in supporting manufacturing practicums and research. However, manual inventory management and tool borrowing often lead to inefficiencies in record-keeping, maintenance delays, and inaccuracies in tracking tools and materials. This study aims to develop a web-based laboratory management system using the CodeIgniter 4 framework to enhance inventory management efficiency, streamline tool borrowing processes, and prepare for future IoT-based machine monitoring integration. The research employs an experimental development design approach. The system includes features for inventory management, tool and material borrowing, and a machine monitoring page designed for IoT integration. Built with PHP, MySQL, HTML, CSS, and JavaScript using the MVC architecture, the system has proven to improve inventory record-keeping efficiency, reduce borrowing errors, and facilitate real-time information access. Although successfully implemented, IoT integration for machine monitoring requires further development to provide real-time operational data. Additionally, enhancing system security through data encryption and two-factor authentication is necessary. This system significantly contributes to the digitalization of laboratory management, paving the way for smarter and more automated laboratories.
Design and Performance Evaluation of a Motor-Driven Adjustable Speed Tool for Corrosion Removal on Bolt Threads in Steam Power Plant Applications Kadex Widhy Wirakusuma; Agus Salim Opu; Yudi Siswanto; Angga Tegar Setiawan; Eriek Aristya Pradana Putra; Muhammad Alfian; Hendi Lilih Wijayanto; Abdul Malik Alfafa
Jurnal Teknologi dan Manajemen Vol. 24 No. 1 (2026): Jurnal Teknologi dan Manajemen (February)
Publisher : Politeknik STMI Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52330/jtm.v24i1.523

Abstract

This study presents the design, fabrication, and experimental evaluation of a portable motor-driven adjustable-speed tool for localized corrosion removal on bolt threads in steam power plant maintenance. The prototype combines a variable-speed motor, a rotating wire brush, and a clamping fixture to ensure controlled contact with threaded surfaces. Performance was assessed on corroded bolts (M14 × 60 mm and M16 × 60 mm) at four spindle speeds (450, 900, 1350 and 1800 rpm), recording cleaning time, vibration, and surface temperature. Results show a strong inverse relationship between motor speed and cleaning time; for example, M16 bolts were cleaned in 1.37 minutes at 450 rpm and 0.36 minutes at 1800 rpm. A time-based cleaning efficiency metric peaked at higher speeds for the tested bolt sizes, while higher rpm also increased vibration and surface temperature, indicating an operational trade off. Compared with manual brushing, the prototype delivered faster, more uniform cleaning with reduced operator dependency and lower thread abrasion. An operational range of 1350–1800 rpm is recommended to balance effectiveness and mechanical/thermal constraints. Future work should include quantitative image-based area removal and gravimetric validation to corroborate surface integrity and material removal rates for field deployment.
Cellulose Nanofiber-Reinforced PVA Films Incorporated with Moringa oleifera Leaf Extract: Mechanical, UV-Shielding, and Structural Properties Kadriadi Kadriadi; Agus Salim Opu; Kadex Widhy Wirakusuma; Kamaruddin Kamaruddin; Jefry Jamel; Jeri Ariksa; Angga Bahri Pratama; Muhammad Adlan Azka
Journal of Fibers and Polymer Composites Vol. 5 No. 3 (2026): Journal of Fibers and Polymer Composites
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jfpc.v5i3.728

Abstract

Polymer films that combine mechanical durability with ultraviolet (UV) protection are needed for sustainable packaging. In this study, polyvinyl alcohol (PVA) films reinforced with cellulose nanofibers (CNF) and incorporated with Moringa oleifera leaf extract (MLE) were prepared by solution casting at combined loadings of 1–4 wt% CNF and 0.5–2 wt% MLE. The tensile properties, UV–visible transmittance, and crystalline structure of the films were evaluated, and the tensile data were analyzed by one-way ANOVA followed by Duncan’s multiple range test (p < 0.05). Tensile strength and tensile modulus increased significantly with increasing CNF–MLE loading. The P-CNF4/MLE2 film exhibited the highest tensile strength (75.47 ± 2.89 MPa) and tensile modulus (654.04 ± 14.96 MPa), corresponding to increases of 118.4% and 116.8%, respectively, relative to neat PVA. Although elongation at break decreased at the lowest loading, both elongation at break and toughness increased at higher loadings, reaching 334.43 ± 6.90% and 227.96 ± 15.43 MJ m⁻³, respectively, for P-CNF4/MLE2. All composite films strongly attenuated UV radiation; films containing at least 2 wt% CNF and 1 wt% MLE transmitted less than approximately 1% of the incident light across the 200–400 nm range, whereas visible-light transmittance at 600 nm decreased from approximately 92% for neat PVA to 45% for P-CNF4/MLE2. X-ray diffraction confirmed that the semicrystalline structure of PVA was retained without the formation of a new crystalline phase, while the crystallinity index increased from 71.79% to 87.91%. The combined incorporation of CNF and MLE therefore produced strong, tough, and UV-shielding PVA films with potential application as light-protective packaging materials.
Co-Authors Abduh Malik Alfafa Abdul Malik Alfafa Agus Salim Opu Amiruddin Amiruddin Angga Bahri Pratama Angga Tegar Setiawan Atmoko, Nugroho Tri Eriek Aristya Pradana Putra Fathurrasuli Fathurrasuli Hendi Lilih Wijayanto Jefry Jamel Jeri Ariksa JUMADDIL HAIR Kadriadi Kadriadi Kadriadi Kadriadi Kamaruddin Kamaruddin Muhammad Adlan Azka Muhammad Alfian Muhammad, Katon Purba, Ari Pranata Primisa Rahmat Fajrul Saragi, Jandri Fan HT Vincentius Sulistyo Aji Nugroho Yudi Siswanto Yusdianto Yusdianto