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All Journal International Journal of Advances in Applied Sciences Jurnal Konseling dan Pendidikan Jurnal IPTEK Journal of Industrial Engineering Management Jurnal Penelitian Pendidikan IPA (JPPIPA) JURNAL MANAJEMEN INDUSTRI DAN LOGISTIK Jurnal Penelitian Teknologi Industri Mekanika: Majalah Ilmiah Mekanika REACTOR : Journal of Research On Chemistry And Engineering PERTANIAN TROPIK Jurnal Tekstil: Jurnal Keilmuan dan Aplikasi Bidang Tekstil dan Manajemen lndustri Agroscript: Journal of Applied Agricultural Sciences
Darmawi, Ahmad
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Transportation

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Smart Lighting System for Vocational Campus Workshop Environment Darmawi, Ahmad; Khairunnisa, Hasna; Harianto, Dedy; Ardiyanto, Agus
Jurnal IPTEK Vol 29, No 1 (2025): May
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2025.v29i1.7729

Abstract

AK-Tekstil Solo is a vocational campus with several workshops for lectures, one of which is the Spinning and Weaving Workshop. It has yarn and fabric manufacturing machines and holds the most significant electricity consumption for machine operations, lighting, and other instruments. Hence, a smart workshop room with electrical energy efficiency is crucial. This research aims to design and develop a smart workshop lighting system using an Arduino-based microcontroller circuit and photocell components. The light intensity setting system is performed by determining the measurement point of light intensity and measuring the natural and artificial light intensity as the input for photocell and relay. An automated lighting system for the smart workshop was then developed using a photocell censor based on the Arduino Mega microcontroller. Product testing shows that the automatic switches and relays based on programming successfully work the automated system.
Pengaruh Variasi Prekursor Terhadap Morfologi dan Aktivitas Antibakteri Nanopartikel Tembaga Menggunakan Reduktor Ekstrak Daun Gambir Elisma, Netri; Emriadi , Emriadi; Darmawi, Ahmad
REACTOR: Journal of Research on Chemistry and Engineering Vol. 4 No. 2 (2023)
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/reactor.v4i2.109

Abstract

Research on synthesis copper nanoparticles has been carried out by the reduction method with a green synthesis approach using extracts of gambir leaves (Uncaria gambir Roxb). Gambir leaf extract contains polyphenol compounds uses as a natural reducing agent to reduce copper cation from variations of prekursor (CuSO45.H2O, Cu(NO3)2.3H2O and CuCl2.2H2O). The formation of copper nanoparticles (CuNP) colloid is visually shown by color change from light brown to dark brown. Absorption peak in UV-Vis spectrophotometer analysis at 405 -427 nm which is a specific wavelength of copper nanoparticles base on phenomenon of Surface Plasmon Resonance (SPR). The X-Ray Diffraction (XRD) analysis showed formation of CuNP with a face centered cubic (fcc) crystal structure. The result of Transmission Electron Microscope show the synthesized CuNP was spherical with particle size diameter 15nm for CuSO4 prekursor, 25 nm for Cu(NO3) prekursor and 28 nm for CuCl2 prekursor. The size of nanoparticles influenced of type prekursor anions. The antibacterial activity of the synthesized nanoparticles was also tested using pathogenic bacteria Escherichia coli and Staphylococcus aureus. The results showed that copper nanoparticles were promising antibacterial agents. Antibacterial activity test on copper nanoparticles were found to have higher antibacterial activity against Gram positive bacteria S. aureus than Gram negatif E. coli.
Implementation of lean manufacturing in the spinning industry to increase production efficiency Parmawati, Sih; Nugraheni, Dyah Novia; Kurniati, Edy Dwi; Darmawi, Ahmad; Alwi, Muhammad
Jurnal Konseling dan Pendidikan Vol. 13 No. 2 (2025): JKP
Publisher : Indonesian Institute for Counseling, Education and Therapy (IICET)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29210/1148300

Abstract

The spinning industry is an important part of the textile sector that faces efficiency challenges due to the large amount of waste in the production process. This study aims to analyze the implementation of Lean Manufacturing as a strategic approach to improving production efficiency in one of the medium-scale spinning companies in West Java. Using a qualitative descriptive method, data were obtained through direct observation, in-depth interviews with six key informants, and analysis of company documents. The results of the study indicate that the application of Lean principles such as 5S, Just-In-Time (JIT), Total Productive Maintenance (TPM), and Visual Management can reduce waiting time between processes by 55%, reduce the frequency of machine breakdowns by 62.5%, and increase the orderliness of the work area by 68%. Even so, the implementation of lean is not free from challenges such as the mismatch of production schedules with machine readiness, resistance to work culture from senior employees, and lack of in-depth understanding of lean tools. This study confirms that the success of Lean Manufacturing depends not only on the tools used, but also on the readiness of the organizational culture and supporting information systems. These findings provide practical contributions to the development of efficient and sustainable operational management strategies in the spinning industry, and offer recommendations in the form of integrated training, integration of production information systems, cross-departmental evaluation, periodic lean audits, and performance-based reward schemes.
DESIGNING TEXTILE WASTE SHREDDER MACHINE FOR CONTINOUS PRODUCT Afifuddin, Mokh; Harianto, Dedy; Sugiyarto, Sugiyarto; Eddy, Yulius Sarjono; Yulianto, Bambang; Darmawi, Ahmad
Journal of Industrial Engineering Management Vol 6, No 1 (2021): Journal of Industrial Engineering Management Vol. 6 No. 1
Publisher : Center for Study and Journal Management FTI UMI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jiem.v6i1.736

Abstract

The textile and textile products industry is one of the mainstay commodities of the manufacturing industry as well as a driving force for national economic development. Like any production process, the textile manufacturing process also produces waste or residual substances called textile waste. Likewise the impact of the activities of garment, tailor, fashion, apparel and convection, one of which is patchwork waste. If the patchwork waste is not handled properly, it will result in waste generation which will have an impact on pollution in the environment. Lack of tools that can treat textile waste, resulting in less optimal handling of textile waste. This research is trying to make a design of a cloth chopping machine that is used to crush the remains of large rags into small pieces of cloth. Thus the packaging of fabric waste is easier and more efficient, besides that it can also be used as raw material for other products so that it can reduce fabric waste that pollutes the environment. In developing the model and design of a textile waste chopping machine, this chopping machine will cut the patchwork which can be sized according to your wishes. It is hoped that the results of this research will contribute to the development, advancement and appropriate technology. The design of this textile fabric waste chopper will provide a practical solution and zero waste process in a textile and garment industry.
Pertumbuhan Bibit Jeruk Asal Kuok Hasil Okulasi pada Berbagai Tingkat Naungan dan Umur Batang Bawah Gusriani, Gusriani; Septirosya, Tiara; Darmawi, Ahmad
AGROSCRIPT: Journal of Applied Agricultural Sciences Vol 1 No 2 (2019): December
Publisher : Universitas Perjuangan Tasikmalaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36423/agroscript.v1i2.326

Abstract

Citrus that comes from Kuok is one of famous local comodity in Riau Province with limited production. To improve the production of citrus it can be done by serving the superior seed throught budding. Rootstock aged and shading levels give effect to the success of budding process. The aims of the study were to obtain the best shade level, suitable rootstock aged and the interaction of rootstock aged with shade level on budding success. This study was conducted on December 2018 to March 2019 at the Experimental Field, Faculty of Agriculture and Animals Science, Islam State University of Sultan Syarif Kasim Riau. This study used split plot design with two factors, shading levels (0%, 50%, 70%) and rootstock aged (4, 8, 12 month) with three replications. The parameters this measured in this study were growth percentage of buds, percentage of sprout, percentage of dormancy, bud burst time, length of buds and number of leaves. The results showed that shade level of 0% and the age of rootstock 4 months produced the best growth of citrus seedlings. There is interaction between the shade level 0% and rootstock aged 12 month to the growth of the budding citrus seedlings.
Optimizing inventory management in the textile industry: a comprehensive evaluation of UHF-RFID technology integration Darmawi, Ahmad; Istikowati, Rita; Astrini, Galuh Yuli
International Journal of Advances in Applied Sciences Vol 14, No 4: December 2025
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijaas.v14.i4.pp1411-1419

Abstract

The integration of ultra-high frequency radio frequency identification (UHF RFID) technology presents a transformative solution to inventory management challenges in the textile industry. This study examines the implementation of a web-based inventory management system incorporating UHF-RFID technology at AK-Tekstil Solo, focusing on its impact on inventory accuracy, operational efficiency, and product traceability. The developed system facilitates real-time tracking of yarn products, streamlines inventory audits, and minimizes manual errors, resulting in substantial improvements in inventory control and warehouse management processes. By enabling automated data capture and tracking, UHF-RFID technology supports the transition to smart warehousing by providing real-time insights into inventory movements. The findings demonstrate that UHF-RFID technology offers significant advantages, including enhanced inventory visibility, cost savings, and improved customer satisfaction through better product availability. Despite potential implementation challenges, the study shows that the long-term benefits of UHF-RFID integration outweigh the initial costs, proving it to be an effective solution for optimizing inventory management in the textile industry. Future research may explore the integration of complementary technologies such as the internet of things (IoT) and artificial intelligence (AI) to further enhance UHF-RFID enabled inventory management systems.
Morphological and Structural Characterization of Pineapple Leaf Fibers: Implications for Eco-Friendly Textile Applications Ahmad Darmawi; Sih Parmawati; Nurfadilah Ikhsani; Fahad
Jurnal Penelitian Pendidikan IPA Vol 11 No 11 (2025): November
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i11.10784

Abstract

Natural fibers from pineapple leaves (Ananas comosus L.) are a potential renewable resource, but their characteristics are highly dependent on their geographical origin. This study aimed to characterize the physico-mechanical properties and morphology of pineapple leaf fibers (PALF) sourced from local farmers in Kediri, East Java. Characterization was conducted at an accredited testing institution using SNI standards, covering fineness, bundle tenacity, and Scanning Electron Microscopy (SEM) observations. The results revealed that the fibers exhibited an average fineness of 33.7 dtex and a tenacity of 23.20 g/tex. Morphological analysis showed a course, multi-cellular, and dense fiber structure. Based on these findings, it is concluded that these PALF demonstrate greater potential for applications in technical textiles and as reinforcement in bio-composite materials rather than as a raw material for apparel yarn.
Integrating Agro-Waste Fiber into Sustainable Textile Innovation: Characterization of Mechanically Extracted Pineapple Leaf Fiber (PALF) for Circular Composite Applications Darmawi, Ahmad; Parmawati, Sih; Ikhsani, Nurfadilah; Fahad, Fahad
Mekanika: Majalah Ilmiah Mekanika Vol 25, No 1 (2026): MEKANIKA : Majalah Ilmiah Mekanika
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/mekanika.v25i1.107494

Abstract

This study explores the potential of pineapple leaf fiber (PALF) from the Queen variety as a sustainable reinforcement material for green composites and textiles, focusing on the effects of mechanical retting. The research addresses critical barriers to industrial adoption, such as fiber-quality variability and hydrophilicity, while highlighting an innovative waterless extraction method that reduces environmental impact compared with conventional processes. A quantitative experimental approach was employed to comprehensively characterize PALF, incorporating standardized tensile testing to measure mechanical properties and microscopic analyses with a Scanning Electron Microscope (SEM) to observe fiber morphology. Findings demonstrate that mechanical retting significantly improves PALF’s tensile strength (23.2 g/tex) and fineness (33.7 dtex). Microscopic analysis reveals a uniform, compact fiber structure that underpins the material's enhanced mechanical performance. PALF emerges as a viable, eco-friendly alternative to synthetic fibers. The waterless mechanical retting process is an effective method for producing high-quality reinforcement fibers, offering practical guidance for industries. This approach contributes significantly to agricultural waste reduction and advances circular economy principles in sustainable materials development.
Co-Authors Afifuddin, Mokh Agus Ardiyanto Anandita, Reyno Anantayu (Universitas Sebelas Maret), Sapja Aribowo, Irham Astrini, Galuh Yuli Bambang Yulianto Darsono Darsono Darsono, Darsono Dedy Harianto Eddy, Yulius Sarjono Elisma, Netri Emriadi , Emriadi Fahad Fahad Fahad Farrel, Rizki Gusriani Gusriani Hasna Khairunnisa Ikhsani, Nurfadilah Istikowati, Rita Kartono, Drajat T Kurniati, Edy Dwi Mahmudha, Sukhatsti Jhohan Muhammad Alwi Nugraheni, Dyah Novia Nurfadilah Ikhsani Rendy Stiyaji Rosida, Alya Sari, Febri Luvita Septirosya, Tiara Sih Parmawati Sugiyarto Sugiyarto Tahrir Aulawi