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All Journal Jurnal Rekayasa Material, Manufaktur & Energi Jurnal Inovator Inovtek Seri Mesin
Haripriadi, Bambang Dwi
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Aerospace Engineering Automotive Engineering Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Journal : Jurnal Inovator

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Analisis Pengaruh Parameter Proses Pada Kualitas Las SMAW Baja Paduan Stainless Steel 304 Mahfud, Muhammad Siraj; Haripriadi, Bambang Dwi; Budiana, Agnes Arum
Jurnal INOVATOR Vol. 8 No. 2 (2025): Jurnal INOVATOR
Publisher : LPPM Politeknik Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37338/inovator.v8i2.519

Abstract

This study analyzes the effect of Shielded Metal Arc Welding (SMAW) welding process parameter variations on the quality of welded joints in 304 stainless steel by varying the current (65 A, 75 A, and 95 A), electrode diameter (2.0 mm; 2.6 mm; 3.2 mm), and weld type (I, V, and X). Evaluation is carried out through tensile tests to determine tensile load, stress, and strain, as well as Non-Destructive Test (NDT) dye penetrant method to detect surface defects. Taguchi L27 design is used to analyze the contribution of each parameter to the quality of the joint. The results show that current is the most influential factor on tensile strength, followed by electrode diameter and weld type. The optimal combination is obtained at a current of 95 A, a 3.2 mm electrode, and an X (double V) weld, with an average tensile load of 87.65 kN, a stress of 730.42 MPa, and a strain reaching 100% which shows the best mechanical performance. Overall, this study confirms that proper welding parameter settings are crucial for the mechanical integrity and quality of 304 stainless steel welded joints.
Analisis Pengaruh Parameter Proses Pada Kualitas Las SMAW Baja Paduan Stainless Steel 304 Mahfud, Muhammad Siraj; Haripriadi, Bambang Dwi; Budiana, Agnes Arum
Jurnal INOVATOR Vol. 8 No. 2 (2025): Jurnal INOVATOR
Publisher : LPPM Politeknik Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37338/inovator.v8i2.519

Abstract

This study analyzes the effect of Shielded Metal Arc Welding (SMAW) welding process parameter variations on the quality of welded joints in 304 stainless steel by varying the current (65 A, 75 A, and 95 A), electrode diameter (2.0 mm; 2.6 mm; 3.2 mm), and weld type (I, V, and X). Evaluation is carried out through tensile tests to determine tensile load, stress, and strain, as well as Non-Destructive Test (NDT) dye penetrant method to detect surface defects. Taguchi L27 design is used to analyze the contribution of each parameter to the quality of the joint. The results show that current is the most influential factor on tensile strength, followed by electrode diameter and weld type. The optimal combination is obtained at a current of 95 A, a 3.2 mm electrode, and an X (double V) weld, with an average tensile load of 87.65 kN, a stress of 730.42 MPa, and a strain reaching 100% which shows the best mechanical performance. Overall, this study confirms that proper welding parameter settings are crucial for the mechanical integrity and quality of 304 stainless steel welded joints.
Analisis Kegagalan Komponen Penyebab Kebocoran Oli pada Sistem Engine dan Hidrolik Excavator Menggunakan Metode Root Cause Analysis (RCA) di PT Indah Kiat Pulp & Paper Tbk Perawang Billah, Yudha Arif; Haripriadi, Bambang Dwi
Jurnal INOVATOR Vol. 9 No. 1 (2026): Jurnal INOVATOR-On Progress
Publisher : LPPM Politeknik Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37338/q5ynhn64

Abstract

Studi ini menganalisis kegagalan komponen yang menyebabkan kebocoran oli pada mesin dan sistem hidrolik excavator menggunakan metode Root Cause Analysis (RCA). Penelitian ini dilakukan di PT Indah Kiat Pulp & Paper Tbk, di mana masalah kebocoran oli yang berulang diamati mengurangi kinerja peralatan dan meningkatkan waktu henti (downtime). Pendekatan studi kasus kualitatif diterapkan menggunakan observasi lapangan, catatan perawatan, dan dokumentasi visual komponen yang rusak. Analisis menggunakan Diagram Tulang Ikan (Fishbone Diagram) dan metode 5 Why untuk mengidentifikasi akar penyebab kegagalan. Hasil menunjukkan bahwa kebocoran oli terutama terjadi pada komponen seperti selang hidrolik, seal, gasket, dan silinder hidrolik. Faktor-faktor penyebabnya meliputi keausan komponen, tekanan operasi yang tinggi, pemasangan yang tidak tepat, dan praktik perawatan yang tidak memadai. Studi ini mengungkapkan bahwa akar penyebabnya bukan hanya masalah teknis tetapi juga terkait dengan implementasi perawatan pencegahan yang tidak efektif. Oleh karena itu, perbaikan seperti inspeksi rutin, penggantian komponen terjadwal, dan kontrol perawatan yang lebih ketat direkomendasikan. Tindakan ini diharapkan dapat mengurangi insiden kebocoran, meminimalkan waktu henti, dan meningkatkan keandalan operasi excavator secara keseluruhan.
Co-Authors Agnes Arum Budiana, Agnes Arum Billah, Yudha Arif Mahfud, Muhammad Siraj Mazuli, Sabri Mukhlis - Rozi, Mohd Fahrul