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All Journal Machine : Jurnal Teknik Mesin Jurnal Media Teknik dan Sistem Industri Sinergi Polmed : Jurnal Ilmiah Teknik Mesin Asian Journal of Community Services (AJCS) Journal of Fibers and Polymer Composites Journal of Industrial Community Empowerment
Kadriadi, Kadriadi
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Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences

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RANCANG BANGUN MESIN PEMOTONG PIPA DENGAN LAS OXY ACETYLENE Ariksa, Jeri; Setiawan, Yudi; Kadriadi, Kadriadi; Amiruddin, Amiruddin; Pratama, Angga Bahri
Machine : Jurnal Teknik Mesin Vol 9 No 1 (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.v9i1.3914

Abstract

Metal cutting is the stage of processing profile raw materials and steel plates according to the cut marks that have been set in the marking process. One of the metal cutting techniques is to use oxy acetylene welding where the cutting occurs due to the reaction of oxygen and steel. Oxy acetylene welding is a manual cutting and welding process, in which the surfaces to be joined are heated until melted by the flame of acetylene gas, namely burning C₂H₂ with O₂ with filler metal or without filler metal where the joining process is without pressure. Besides for welding purposes (connection), oxy acetylene welding can also be used as preheating, brazing, cutting and hard facing. In the process of cutting iron pipes using oxy acetylene welding manually, the problem that is often found is the results of uneven and not straight cuts. This causes a leveling process to be needed on the edges that are cut so that they are flat and straight. In this research, a pipe cutting machine with oxy acetylene welding has been made which aims to produce straight, smooth, and even pipe cutting. The pipe cutting machine that has been made can produce flat, smooth, and straight iron pipe cuts on iron pipes with a diameter of 4.5 inches, 3.5 inches and 3 inches with a cutting time of 32 seconds, a motor wave rotation speed of 5.8 Hz, and a cut tolerance of ± 3 mm.
RANCANG BANGUN ALAT PENGERING BAJU MENGGUNAKAN UDARA PANAS Kadriadi, Kadriadi; Wirakusuma, Kadex Widhy; Pratama, Angga Bahri; Ariksa, Jeri; Yandi, Welly
Machine : Jurnal Teknik Mesin Vol 9 No 1 (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.v9i1.3950

Abstract

Drying is a process of transferring heat and water vapor simultaneously which requires heat energy to evaporate the water content. This heat energy can usually be obtained from sunlight. However, during the rainy season, this condition inhibits the drying process that utilizes sunlight, so the drying process takes a long time. Therefore we need a tool that can dry clothes without depending on the heat source from the sun's rays. The clothes dryer is a tool used to dry clothes with artificial heat energy, one of the artificial heat producers is a heating element or what is often called a heater. The artificial heating element used in this research is Electric Heater. This Electric Heater is equipped with a fan that can produce an indoor temperature of up to ± 52.3º C so that the heat generated by the Electric Heater can convert the water contained in the clothes into water vapor which will then be released into the environment with the help of a fan. Based on the results of calculations and testing, the ability of this tool is able to evaporate an average mass of water of 535.8 grams/hour and this machine reaches its optimum point for the number of drying clothes that can be dried as many as 6 clothes.
RANCANG BANGUN ALAT SETTING ALIGNMENT RODA GIGI SEBAGAI MEDIA PEMBELAJARAN DI LABORATORIUM PERBAIKAN DAN PEMELIHARAAN MESIN Kadriadi, Kadriadi; Pratama, Angga Bahri; Wirakusuma, Kadex Widhy; Saragi, Jandri Fan HT; Ariksa, Jeri; Alfian, Muhammad; Siswanto, Yudi
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.
Enhancing Entrepreneurship Resource Competence through Business Incubator Consultant Certification Halim, Hendra; Ramadhani, Evi; Kadriadi, Kadriadi; Aziz, Fauzan; Subakty, Edhy; Susiatmojo, Amin; Putra, I Gede Juliana Eka
Asian Journal of Community Services Vol. 3 No. 4 (2024): April 2024
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/ajcs.v3i4.8839

Abstract

This paper presents the results of a certification program aimed at enhancing the competency of entrepreneurship resources through the certification of business incubator consultants. The program, conducted by the Indonesia Management Forum and HR24/7 Communication Hub in Bali, involved participants from various regions across Indonesia. The training sessions covered topics such as advocacy for technology business incubator development, product-market fit analysis, business idea validation, feasibility study preparation, legal and institutional management, company profile creation, access to financing, marketing assistance, business valuation, and financial report preparation. The program culminated in a competency assessment on the third day. The results indicated a high level of satisfaction among participants, highlighting the program's effectiveness in improving their understanding and skills in technology business incubator management. The implications of this program include the potential enhancement of Indonesia's entrepreneurship ecosystem and contributions to the achievement of Sustainable Development Goals.
Modified PVA Film from Methanol-Soluble Phenolic Extracts of Spatholobus littoralis Hask as Active Pharmaceutical Packaging Kadriadi, Kadriadi; Abral, Hairul; Mahardika, Melbi; Ilhamdi, Ilhamdi; Akmal, Akmal; Handayani, Dian; Yulianis, Yulianis; Kassim, Mohamad Haafiz Mohamad; Ariksa, Jeri
Journal of Fibers and Polymer Composites Vol. 5 No. 1 (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.v5i1.567

Abstract

The development of active pharmaceutical packaging based on biodegradable materials is an important strategy to reduce dependence on single-use plastics and their environmental impact. Polyvinyl alcohol (PVA) is a potential biodegradable polymer, but it has limitations in terms of exposure to ultraviolet (UV) radiation and microbial contamination. This study aims to develop a modified PVA film with methanol-soluble phenolic extract of Spatholobus littoralis Hask as active pharmaceutical packaging with UV protection, antioxidant, and antibacterial functions. The phenolic extract was obtained through a maceration method using methanol as a solvent, while the PVA film was fabricated using the solution casting technique. The PVA film was modified with varying concentrations of phenolic extract of 0, 1.25, 2.5, and 5wt% (PPE0, PPE1.25, PPE2.5, and PPE5), then evaluated for its UV protection properties, antioxidant activity, and antibacterial activity. The results showed that the addition of S. littoralis phenolic extract was able to increase the ability of PVA films to block UV radiation completely (100%) in the 200–400 nm wavelength range. Antioxidant activity testing using the DPPH method showed an increase in free radical scavenging ability as the concentration of phenolic extract increased. In addition, the modified PVA film showed significant antibacterial activity against Staphylococcus aureus and Escherichia coli. These findings indicate that S. littoralis Hask phenolic extract has potential as a natural bioactive agent in the development of environmentally friendly and multifunctional active pharmaceutical packaging, with dual protection capabilities against UV degradation and microbial contamination. This research makes an important contribution to the development of sustainable pharmaceutical packaging materials based on renewable natural resources.
The Effect of Temperature on Manufacturing Process of Tannin Acid-Based Adhesive Materials on Mechanical and Physical Properties Perdana, Mastariyanto; Abral, Hairul; Son, Lovely; Masruchin, Nanang; Azmi, Muhammad; Kadriadi, Kadriadi
Journal of Fibers and Polymer Composites Vol. 5 No. 1 (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.v5i1.570

Abstract

This study focuses on the development and characterization of adhesives based on Polyvinyl Alcohol (PVA), Tannic Acid (TA), and Cellulose Nanofibre (CNF). The main objective is to optimize the temperature used in the production process. Phenol-formaldehyde and other synthetic adhesives frequently encounter environmental obstacles, necessitating the search for more ecologically sound alternatives. TA, a naturally occurring polyphenolic molecule, has significant potential as an eco-friendly glue ingredient. This study assesses the impact of temperature fluctuations (30, 45, 60, 75, and 90°C) during the glue manufacturing process on its mechanical characteristics, specifically emphasizing shear stress. Experiments were conducted at a rotational speed of 1500 revolutions per minute (RPM) for 30 minutes. The results indicated that the adhesive performed best at 90°C, achieving a maximum shear stress value of 3.41 MPa. The results demonstrated a significant enhancement in the shear strength of the bioadhesive, exhibiting an approximately sixfold increase as the processing temperature was elevated from 30°C to 90°C. Microstructural analysis reveals that the voids formed during the mixing process decrease at this specific temperature. The results indicate that elevated temperatures lead to a significant reduction in void formation. The FTIR measurement revealed the absorption of hydroxyl groups around 3305 cm⁻¹, suggesting the presence of robust crosslinking. Furthermore, elevated temperatures lead to a significant reduction of free OH- groups within the bioadhesive. The PVA/TA/CNF adhesive possesses extensive potential for application in industries that necessitate adhesives with exceptional strength. The study is anticipated to offer comprehensive understanding of how to improve the manufacturing process of TA-based adhesives, and its impact on the creation of adhesive materials that are more sustainable and environmentally friendly.
Co-Authors Abral, Hairul Afandy, Moh Akmal Akmal Amiruddin Amiruddin Angga Bahri Pratama Ariksa, Jeri Boangmanalu, Eka Putra Dairi Dian Handayani Edwin Harsiga Eriek Aristya Pradana Putra Fathurrasuli, Fathurrasuli Fauzan Aziz Halim, Hendra Ilhamdi, Ilhamdi Kassim, Mohamad Haafiz Mohamad Lovely Son, Lovely Mahardika, Melbi Mastariyanto Perdana Mubarok, Abdul Haris Muhammad Alfian, Muhammad Muhammad Azmi, Muhammad Nanang Masruchin Opu, Agus Salim Purba, Ari Pranata Primisa Putra, I Gede Juliana Eka Ramadhani, Evi Saragi, Jandri Fan HT Subakty, Edhy Susiatmojo, Amin Wirakusuma, Kadex Widhy Yandi, Welly Yudi Setiawan Yudi Siswanto Yulianis Yulianis