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Sunar Baskoro, Ario
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Engineering Industrial & Manufacturing Engineering

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Tool geometry influence on the tensile load of copper–AA1100 joint using two stage refilled friction stir spot welding (TS-RFSSW) Trinita Salsabila, Hikaru; Sunar Baskoro, Ario; Herdiyan Maritza Salsabila, Shafira; Kiswanto, Gandjar; Junaidi, Syarif
Prosiding SNTTM Vol 23 No 1 (2025): SNTTM XXIII October 2025
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/hw8ka649

Abstract

Two stage refilled friction stir spot welding (TS-RFSSW) is a method to eliminate keyholes formed in the friction stir spot welding (FSSW). This study aims to investigate the effect of tool geometry on the tensile shear loads of joints produced by TS-RFSSW. Copper and aluminum AA110 sheets with a thickness of 0.42 mm were joined using the TS-RFSSW process. The tools used in the first stage have taper and triangular pins. In the second stage, pinless tools with 5 mm and 6 mm diameters were used to close the keyhole. Other process parameters used included a dwell time of 4 seconds, a plunge depth of 600 µm, and a tool tilt angle of 0⁰. The TS-RFSSW process successfully produced improved joint surfaces with minimal keyholes, resulting in increased tensile shear loads. The tool with a triangular pin produced joints with higher tensile shear loads due to more intensive material flow. On the other hand, increasing the diameter of the pinless tool for the second stage reduced the tensile shear loads of the joints. The maximum tensile shear load achieved was 292.78 ± 34.72 N using a triangular pin tool for the first stage and a 5 mm pinless tool for the second stage. 
Effect of travel speed ​​and arc length on geometry and heat accumulation in WAAM-GMAW process Sifa, Agus; Sunar Baskoro, Ario; Riyantono, Afrizal; Khoirina, Faza; Kiswanto, Gandjar; Junaidi, Syarif
Prosiding SNTTM Vol 23 No 1 (2025): SNTTM XXIII October 2025
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/88detg63

Abstract

Wire arc Additive Manufacturing (WAAM) is a technology capable of manufacturing large and complex components using aluminum alloys. This is due to its high deposition rate and efficient material utilization. However, WAAM faces several issues, particularly regarding process stability. In the WAAM process, especially when using Gas Metal Arc Welding (GMAW), stability is largely determined by controllable process parameters such as travel speed and arc length. This study aims to clarify how fusion stability, influenced by travel speed and arc length, affects the resulting deposit geometry and heat accumulation. The experimental method involved conducting a single-layer WAAM process using GMAW, with ER5356 filler (diameter 1 mm) and AA6061 substrate. During the single-layer WAAM GMAW process, the heat temperature and current were measured in real-time on the deposits. The results included minimum and maximum height and width measurements of the deposits produced. It was observed that increasing the travel speed reduced the current, thereby lowering the heat input. Heat accumulation, under fixed parameters of 80 A current, 16 V voltage, and varying travel speeds and arc lengths, fluctuated throughout the process. At an arc length of 6 mm, the single-layer deposit geometry exhibited humping, causing irregular widths and heights. Overall, both travel speed and arc length played significant roles in determining the maximum and minimum heights of the deposits.
Co-Authors Herdiyan Maritza Salsabila, Shafira Junaidi, Syarif Khoirina, Faza Riyantono, Afrizal Sifa, Agus Trinita Salsabila, Hikaru