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All Journal ROTOR: JURNAL ILMIAH TEKNIK MESIN Asian Journal of Mechanical Engineering
Dian Ridlo Pamuji
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Automotive Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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OPTIMASI MULTIRESPON PADA PROSES EDM SINKING BAJA ST 42 DENGAN MENGGUNAKAN METODE TAGUCHI DAN FUZZY LOGIC Galang Sandy Prayogo; Nuraini Lusi; Dian Ridlo Pamuji
ROTOR Vol 9 No 2 (2016)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

The optimization technique of machining parameters considering multiple performance characteristics of non conventional machining EDM process using Taguchi method combined with fuzzy logic is presented in this study. ST 42 steel was chosen as material workpiece and graphite as electrode during this experiment. Performance characteristics such as material removal rate and overcut are selected to evaluated the effect of machining parameters. Current, pulse on time, pulse off time and discharging time/ Z down were selected as machining parameters. The experiments was conducted by varying that maching parameters in three different levels. Based on the Taguchi quality design concept, a L27 orthogonal array table was chosen for the experiments. By using the combination of fuzzy logic and Taguchi, the optimization of complicated multiple performance characteristics was transformed into the optimization of a single response performance index. Optimal levels of machining parameters were identified by using fuzzy logic method. The statistical application of analysis of variance was used to determine the relatively significant machining parameters. The result of confirmation test indicted that the determined optimal combination of machining parameters effectively improve the performance characteristics of the machining EDM process on ST 42 steel. Keywords: EDM, Taguchi, Fuzzy logic
Influence of Welding Parameters on the Tensile Properties of ASTM A36 Using FCAW for Medical Storage Applications Moh. Dimas Hakim; Eli Novita Sari; Dian Ridlo Pamuji; I.G.N.B. Catrawedarma; Mohammad Abdul Wahid; Akhmad Afandi
Asian Journal of Mechanical Engineering Vol. 1 No. 1 (2025): January – June
Publisher : Global Scientific Media

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Abstract

This study investigates the influence of welding parameters on the tensile properties of ASTM A36 steel using the Flux Cored Arc Welding (FCAW) method for medical storage applications. ASTM A36 is widely used due to its good weldability and ductility, making it suitable for tank fabrication in medical systems. The research focuses on the effects of varying current (120 A, 135 A, 150 A) and voltage (22 V, 24 V) settings without the application of Post Weld Heat Treatment (PWHT). Tensile tests were performed to assess the mechanical strength of the welded joints. The results indicate that the welding setting of 120 A and 22 V produced the highest tensile strength of 464.8 MPa. In contrast, higher current settings, particularly 135 A, led to a reduction in tensile performance. The findings demonstrate that appropriate control of welding parameters is crucial to achieving optimal tensile strength in FCAW-welded ASTM A36 components for medical storage systems.
Co-Authors Akhmad Afandi Eli Novita Sari Galang Sandy Prayogo I.G.N.B. Catrawedarma Moh. Dimas Hakim Mohammad Abdul Wahid Nuraini Lusi