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Haripriadi, Bambang Dwi
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics

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Analisis Pengaruh Parameter Proses Pada Kualitas Las SMAW Baja Paduan Stainless Steel 304 Muhammad Siraj Mahfud; Bambang Dwi Haripriadi; Agnes Arum Budiana
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 Pengelasan SMAW Pada Kekuatan Sambungan Las Baja Paduan ST60 M Syafuan Efendi; Bambang Dwi Haripriadi
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.v8i2.520

Abstract

Penelitian ini menganalisis menentukan parameter pengelasan SMAW yang optimal pada Baja ST60 dengan memvariasikan arus 100 A, 110 A, 120 A, elektroda E7018 Ø2.6, Ø3.2, Ø4.0, dan kampuh I, V, X menggunakan metode Taguchi L27. Pengujian mencakup NDT penetrant dan uji tarik sesuai ASTM E8/E8M, dengan analisis S/N Ratio dan ANOVA. Hasil menunjukkan beberapa cacat seperti porosity dan crack, namun sebagian besar spesimen berada dalam kondisi baik. ANOVA menunjukkan kampuh sebagai faktor paling berpengaruh, disusul diameter elektroda dan arus. Kombinasi parameter terbaik untuk menghasilkan kekuatan sambungan tertinggi adalah arus 120 A, elektroda Ø4.0 mm, dan kampuh V, yang memberikan nilai tarik dan stabilitas las terbaik sehingga dapat menjadi acuan dalam proses pengelasan industri.
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 Yudha Arif Billah; Bambang Dwi Haripriadi
Jurnal INOVATOR Vol. 9 No. 1 (2026): Jurnal INOVATOR
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.
Rancang bangun dan analisis prototype automated guided vehicle (AGV) pengangkut toolkit bengkel perkakas berbasis kontrol PID Rafiqul Hidayat; Bambang Dwi Haripriadi
Jurnal Mesin Sains Terapan Vol 10, No 2 (2026): JURNAL MESIN SAINS TERAPAN
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jmst.v10i2.10477

Abstract

Manual toolkit distribution in machining workshops causes production inefficiencies due to high operator downtime. Conventional navigation robots using infrared sensors often fail due to light reflections from oil spills and metal dust. This study aims to design and analyze a 0.5 kg Automated Guided Vehicle (AGV) prototype with a 1 kg payload capacity. Navigation is developed using two TCS34725 color sensors and a TCA9548A I2C multiplexer connected to an Arduino Mega 2560 to detect RGB and Clear values, rendering it oil-resistant. Movement stability is controlled by a PD algorithm driving an L298N driver and dual 1:48 DC gearbox motors, integrated with NRF24L01 wireless communication. Tuning results using the Ziegler-Nichols method determined optimal parameters at  and . This combination provides responsive steering, dampens oscillation, and eliminates integral windup during turns. Navigation tests demonstrated a 100% success rate in executing turns and station braking. At a 1 kg payload, the AGV achieved an average delivery time of 15.21 seconds compared to 11.32 seconds for manual delivery over an average distance of 12.5 meters. This is because increasing the payload mass raises the kinetic friction between the rubber wheels and the workshop floor, thereby reducing the AGV's linear speed at a constant PWM ratio
Analisa Kekuatan Material AISI 1018 Dan 1020 Pada Sasis Semi Ladder Frame Menggunakan Metode Finite Element Analysis Galih Rakasiwy; Bambang Dwi Haripriadi
Jurnal INOVATOR Vol. 9 No. 2 (2026): Jurnal INOVATOR-On Progress
Publisher : LPPM Politeknik Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37338/5kjrp772

Abstract

This study analyzes the structural strength of a semi-ladder frame chassis by comparing AISI 1018 and AISI 1020 steel using Finite Element Analysis (FEA) on SolidWorks through incremental loading from 1,000 to 5,000 kgf. At peak operational load (2,000 kgf), both materials produced an identical maximum displacement of 0.8475 mm at the Side Body Support Rail (below the allowable limit of 2.655 mm). The highest Von Mises stress was concentrated at the rear kick-up curvature section due to the notch effect, measuring 149.0 MPa (AISI 1018) and 148.8 MPa (AISI 1020), respectively. The chassis remains in the safe region under 1,000–2,000 kgf loads (Factor of Safety / FoS ≥ 1.5), enters a critical condition at 3,000 kgf, and undergoes plastic deformation starting from 4,000 kgf (FoS < 1.0). AISI 1018 steel was selected as the best material because its higher intrinsic yield strength (370.0 MPa vs 351.6 MPa) yields a superior minimum FoS (2.484 vs 2.362). This extra 5.17% safety margin is crucial for ensuring chassis reliability against dynamic shock loads on roads.
Co-Authors Abdul Gafur Agnes Arum Budiana Agnes Arum Budiana, Agnes Arum Akmal Indra Andi Cavillo Efendi , M Syafuan Fajrul, Rahmat Galih Rakasiwy Ibnu Hajar Ibnu Hajar Ismet Hari Mulyadi M Syafuan Efendi M. Iqbal Nuzuliansyah Mahfud, Muhammad Siraj Mazuli, Sabri Mazwan Mazwan muhammad rahmat rahmat Muhammad Siraj Mahfud Mukhlis - Rafiqul Hidayat Rahmat Fajrul Rahmat Fajrul Rozi, Mohd Fahrul Siska Mar Dwi Yani Siti Umira Supendi Supendi Yudha Arif Billah