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All Journal International Journal of Advances in Applied Sciences Civil Engineering Dimension
Blinka Hernawan Prasetya
Diponegoro University
Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Environmental Science Materials Science & Nanotechnology Mathematics Physics

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Finite Element Analysis of The Effect of Fiber Content on The Flexural Strength of SFRC Beams with Steel Rebars Ilham Nurhuda; Blinka Hernawan Prasetya; Nuroji Nuroji; Yulita Arni Priastiwi
Civil Engineering Dimension Vol. 26 No. 2 (2024): SEPTEMBER 2024
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/ced.26.2.101-110

Abstract

This research aimed at studying the effect of fiber content on the flexural strength and behavior of steel fiber reinforced concrete (SFRC) beams with steel rebars. The study employed finite element (FE) analysis to simulate the behavior of SFRC beams. The simulation results of the FE model were validated against experimental data. Subsequently, the validated model was utilized to analyze the strength and crack patterns of SFRC beams with steel rebars in comparison to conventional RC concrete beams without fibers. The parametric study indicates an average 9% increase in RC beam capacity for every 1% increment in fiber volume fraction. Moreover, this study reveals more substantial effects of steel fibers on beams with low reinforcement ratios. Crack analysis shows that cracks in the SFRC beams are distributed more evenly compared to plain RC beams at regions with the same bending moment, indicating enhanced strength to sustain loads, reduced deflection, and improved beam ductility.
Effect of post-weld heat treatment and cooling techniques on mechanical performance of AH36 steel for marine structures Ahmad Firdhaus; Blinka Hernawan Prasetya; Muhammad Adnan Rivaldi; Parlindungan Manik; Tuswan Tuswan
International Journal of Advances in Applied Sciences Vol 15, No 3: September 2026
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijaas.v15.i3.pp944-953

Abstract

The mechanical properties of structural steels used in marine environments are significantly affected by welding procedures. This research examines the impact of various cooling techniques, coupled with post-weld heat treatment (PWHT), on the strength and ductility of AH36 steel welded via shielded metal arc welding (SMAW). Heat treatments were conducted at temperatures of 450 °C, 600 °C, and 750 °C. Oil quenching and normalizing were employed as the two cooling processes. Tensile strength, elastic modulus, elongation, and impact toughness were measured through mechanical testing. The findings demonstrate that oil quenching after treatment at 450 °C yields the most favorable tensile strength and elongation properties, surpassing established safety standards. Conversely, increasing the treatment temperature to 600 °C and 750 °C reduces strength and ductility, presumably due to grain coarsening and microstructural weakening. Impact toughness is substantially improved by normalizing, especially at 600 °C, which offers the best balance of strength and toughness. These findings show that PWHT at 600 °C followed by normalizing markedly improves the mechanical properties of AH36 steel, ensuring dependable performance in harsh marine environments. This research helps improve weld quality and the safety of marine structures by carefully selecting heat treatment and cooling procedures.
Co-Authors Ahmad Firdhaus Ilham Nurhuda Muhammad Adnan Rivaldi Nuroji Nuroji Parlindungan Manik Tuswan Tuswan Yulita Arni Priastiwi