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All Journal Jurnal Rekayasa Mesin Jurnal Serambi Engineering
Hendrix Noviyanto Firmansyah
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Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Engineering Environmental Science Mechanical Engineering

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Analisis Tegangan Bilah Turbin Angin Komposit Berpenguat Spar Ganda Ikramullah Ikramullah; Hendrix Noviyanto Firmansyah; Djarot Wahju Santoso
Jurnal Serambi Engineering Vol 8, No 2 (2023): April 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i2.6029

Abstract

The design of wind turbine blades requires structural design and material selection that can withstand aerodynamic loads. The required structural criteria for wind blades are strong and lightweight. Modeling and analysis of stress values were carried out using MSC Patran/Nastran software. The selected material is an E-Glass fiber composite with epoxy resin matrix and has 8 layers with different fiber directions in each layer with fiber direction arrangement [0°/±45°/90°]. The turbine blade model without a spar is compared with the double spar turbine blade. The results found that the stress of the double spar blade had a lower stress value with a maximum tensile stress of 8.83 MPa, while on the blade without spar the maximum tensile stress was 10.6 MPa, while the maximum compressive stress on the double spar blade was 8.68 MPa, the maximum compressive stress on the blade without spar was 11 MPa.
Analisis Tegangan Bilah Turbin Angin Komposit Berpenguat Spar Ganda Ikramullah Ikramullah; Hendrix Noviyanto Firmansyah; Djarot Wahju Santoso
Jurnal Serambi Engineering Vol 8, No 2 (2023): April 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i2.6029

Abstract

The design of wind turbine blades requires structural design and material selection that can withstand aerodynamic loads. The required structural criteria for wind blades are strong and lightweight. Modeling and analysis of stress values were carried out using MSC Patran/Nastran software. The selected material is an E-Glass fiber composite with epoxy resin matrix and has 8 layers with different fiber directions in each layer with fiber direction arrangement [0°/±45°/90°]. The turbine blade model without a spar is compared with the double spar turbine blade. The results found that the stress of the double spar blade had a lower stress value with a maximum tensile stress of 8.83 MPa, while on the blade without spar the maximum tensile stress was 10.6 MPa, while the maximum compressive stress on the double spar blade was 8.68 MPa, the maximum compressive stress on the blade without spar was 11 MPa.
Corrosion and Wear Rate Analysis of SS304 Stainless Steel with Composite Coating Variations: Aluminum/Silicon Carbide/Epoxy and Titanium Dioxide/Silicon Carbide/Epoxy Niko Ario Septian; Hendrix Noviyanto Firmansyah; Kriswanto; Safriana, Eni
Jurnal Rekayasa Mesin Vol. 20 No. 2 (2025): Volume 20, Nomor 2, Agustus 2025
Publisher : Mechanical Engineering Department - Semarang State Polytechnic

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jrm.v20i2.6634

Abstract

The palm oil industry presents significant challenges to material durability due to its corrosive and abrasive environment, particularly affecting components such as screw conveyors made from SS304 stainless steel. This study aims to analyze the influence of composite coating variations based on epoxy resin with the addition of aluminum (Al), silicon carbide (SiC), and titanium dioxide (TiO₂) on the corrosion and wear rates of SS304 in an H₂SO₄ medium. The methods employed include corrosion testing using the weight loss method in accordance with ASTM G31-72, and wear testing using the Ogoshi method following ASTM G99. Four specimen variations were evaluated: uncoated (Raw), pure epoxy, epoxy–Al–SiC (A), and epoxy–TiO₂–SiC (B).The results indicate that Specimen B exhibited the best corrosion resistance, with the lowest corrosion rate of 0.00798 mm/year, while Specimen A demonstrated the highest wear resistance, with a wear rate of 0.00042 mm³/kg·m. The pure epoxy specimen showed the poorest performance in both aspects. These findings confirm that the incorporation of reinforcing particles into the epoxy matrix plays a significant role in enhancing corrosion and wear resistance, thereby contributing to extended service life and improved equipment efficiency in extreme industrial environments.
Co-Authors Djarot Wahju Santoso Ikramullah Ikramullah Kriswanto Niko Ario Septian Safriana, Eni