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All Journal Public Health and Safety International Journal (PHASIJ) Engineering and Technology International Journal (EATIJ)
Dewadi, Fathan
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Dentistry Electrical & Electronics Engineering Engineering Health Professions Industrial & Manufacturing Engineering Mechanical Engineering Medicine & Pharmacology Nursing Public Health Veterinary

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Optimization of Production Processes through Lean Manufacturing Techniques in the Automotive Industry Dewadi, Fathan; Suhara, Ade; Aulia Nanda, Rizki; Karyadi, Karyadi; Amir, Amir
Engineering and Technology International Journal Vol 6 No 02 (2024): Engineering and Technology International Journal (EATIJ)
Publisher : YCMM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55642/eatij.v6i02.795

Abstract

The objectives of this study are to identify and analyze the most effective Lean Manufacturing techniques in improving the efficiency of the production process in the automotive industry and identify the types of waste that occur in the automotive production process and develop strategies to reduce or eliminate them through the application of Lean ManufacturingMethod in this study is to identify the main themes in the literature regarding Lean Manufacturing techniques, implementation challenges, and impacts on production efficiency and quality, combine the analysis results to provide a comprehensive picture of Lean Manufacturing implementation, including best practices and recommendations, assess the quality and relevance of the literature, and identify gaps in existing research. Lean implementation often faces challenges such as change resistance, resource limitations, and the need for intensive training. Literature studies note that successful Lean implementation depends on managerial support and organization-wide commitment. Lean techniques are proven to improve production efficiency by reducing cycle time, decreasing lead time, and improving material flow. 5S techniques improve organization and cleanliness in the workplace. Identification of the types of waste in the automotive production process can significantly reduce or eliminate such waste. Well-implemented Lean techniques can reduce costs and improve product quality simultaneously, providing mutually supportive benefits and increasing customer satisfaction and company profitability.
Effect of Material Type and Design on Hook Crane Performance: Stress, Deformation, and Safety Factor Analysis Dewadi, Fathan; Amir, Amir
Engineering and Technology International Journal Vol 6 No 02 (2024): Engineering and Technology International Journal (EATIJ)
Publisher : YCMM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55642/eatij.v6i02.974

Abstract

This simulation aims to evaluate the stress, deformation, and strain values of the crane hook structure to ensure safe load handling and prevent functional failure. In this study, AISI 1015, AISI 1035, and alloy steel casing materials were tested, along with two different hook designs: trapezoidal and circular. The trapezoidal design had base dimensions of 34.50 mm and 58.00 mm, with a top surface area of 55.00 mm and a radius of 10.00 mm. The circular design has a diameter of 58.00 mm. Simulations were carried out using SolidWorks on AISI 1015 with Mass 10 tons, stress 279.68 N/mm², displacement 0.61 mm. on AISI 1035: Mass 12 tons, stress 310.11 N/mm², displacement 0.61 mm. on Alloy steel with Mass 8.5 tons, stress 236.87 N/mm², displacement 0.59 mm. For circular design on AISI 1015 with a mass of 9.5 tons, stress 279.69 N/mm², displacement 0.57 mm. on AISI 1035 with a mass of 10 tons, stress 310.25 N/mm², displacement 0.76 mm. Alloy steel with a mass of 8 tons, stress 237.28 N/mm², displacement 0.55 mm. Each material exhibits different mechanical characteristics, which affect stress, deformation and strain. Based on the results, the AISI 1035 material with a circular design supports a maximum load of 9.5 tons, achieving a safety factor of 1.68, which is close to the minimum threshold of 1.8 for safe operation.
Understanding the Link Between Promotion and Work Performance: A Literature Review in the Context of Regional Water Service Companies Suhara, Ade; Muttaqien, Zaenal; Dewadi, Fathan
Public Health and Safety International Journal Vol. 5 No. 01 (2025): Public Health and Safety International Journal (PHASIJ)
Publisher : YCMM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55642/phasij.v5i01.976

Abstract

This literature review explores the relationship between promotion and employee work performance within the context of regional water service companies. Promotion is often used as a motivational tool in organizational settings, aiming to reward achievements and encourage higher performance. However, the effectiveness of promotion policies varies depending on organizational culture, fairness, and the clarity of performance metrics. Through thematic analysis of existing research, this study finds that while promotion generally has a positive impact on motivation and commitment, its benefits can diminish when the process lacks transparency or objective criteria. The findings highlight the importance of merit-based promotion systems, coupled with training and support, to ensure that employees succeed in their new roles. This review provides insight for regional service organizations aiming to improve employee performance through well-structured human resource strategies.
A Literature Review on the Health and Safety Risks in Small-Scale Renewable Energy Manufacturing: A Public Health Perspective Suhara, Ade; Wibowo, Cahyo; Dewadi, Fathan
Public Health and Safety International Journal Vol. 5 No. 01 (2025): Public Health and Safety International Journal (PHASIJ)
Publisher : YCMM

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Abstract

The development of small-scale renewable energy manufacturing in developing countries significantly contributes to sustainable energy access and local economic independence. However, this manufacturing sector poses occupational health and safety (OHS) risks that are often overlooked, particularly regarding chemical exposure, technical dust, and informal working conditions. This article presents a systematic literature review to identify these risks from a public health perspective and assess the social, economic, and regulatory factors influencing working conditions. Findings reveal that OHS aspects are frequently neglected in small-scale renewable energy technology development, potentially leading to long-term health impacts, especially for women and young workers in the informal sector. The article recommends developing contextualized OHS guidelines, safety training programs, and healthy workspace design as mitigation strategies. A cross-sectoral approach involving government, academia, and industry stakeholders is essential to ensure safe and sustainable renewable energy manufacturing.
Optimization of Laser Marking Parameters on SKD-11 Tool Steel to Enhance Surface Hygiene and Safety in Medical Device Manufacturing Karyadi; Nanda, Rizki; Mulyadi, Dodi; Suhara, Ade; Dewadi, Fathan
Public Health and Safety International Journal Vol. 5 No. 02 (2025): Public Health and Safety International Journal (PHASIJ)
Publisher : YCMM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55642/phasij.v5i02.1159

Abstract

Laser marking is essential in medical device manufacturing to ensure permanent identification and traceability while maintaining hygienic surface quality. However, improper parameter selection may increase surface roughness, reducing readability and risking microbial retention. This study aims to optimize laser marking parameters on SKD-11 tool steel to improve marking clarity without compromising surface integrity. Six combinations of laser speed, power, and frequency were tested. Surface roughness was measured using a YRT200 (Ra) tester, and marking quality was visually assessed. The optimal performance was achieved at 150 mm/s, 100 W, and 54 kHz, producing clear engraving with a moderate roughness of 29.8 μm. These results indicate that appropriate parameter optimization can balance clarity and hygienic surface characteristics, highlighting its importance for reliable and safe labeling in industrial and medical applications.
Design, Development, and Performance Evaluation of a Closed-System Batik Fabric Drying Machine for Small-Scale Industry Applications Ekayuliana, Arifia; Dewadi, Fathan; Yudisha, Nabila; Rosid, Ibnu; Fauzi, Al; Purdiatama, Muhamad; Ludwika, Adinda; Royan, Ahmad; Nurcholis, Muhammad
Engineering and Technology International Journal Vol 7 No 03 (2025): Engineering and Technology International Journal
Publisher : YCMM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55642/eatij.v7i03.1156

Abstract

This study presents the design and performance evaluation of a closed-system batik fabric drying machine for small-scale industries. The system integrates a spinner for initial dewatering and a hot-air blower with thermostatic control at 60 °C. Experimental tests examined drying time, temperature stability, and fabric quality. Results showed that 2 kg of batik fabric dried in 18 minutes—about 70 % faster than traditional sun drying. The closed-loop air circulation improved thermal uniformity (±1.5 °C deviation) and reduced energy use by 25 %. No color fading or fiber damage occurred, and ultraviolet lamps prevented microbial growth. This design demonstrates that combining mechanical efficiency, thermal control, and ergonomics can enhance energy efficiency and production reliability for micro-scale batik industries.
Co-Authors Amir Amir Aulia Nanda, Rizki Cahyo Wibowo Dodi Mulyadi Ekayuliana, Arifia Fachry Abda El Rahman Fauzi, Al Karyadi Karyadi Karyadi Ludwika, Adinda Nabila Yudisha Nanda, Rizki Nurcholis, Muhammad Purdiatama, Muhamad Rosid, Ibnu Royan, Ahmad Suhara, Ade