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All Journal Infotekmesin Jurnal Inovasi Teknologi Terapan
Ilham Ary Wahyudie
Politeknik Manufaktur Negeri Bangka Belitung
Agriculture, Biological Sciences & Forestry Computer Science & IT Electrical & Electronics Engineering Mechanical Engineering

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Analisis Pengaruh Penambahan Serbuk Pelepah Kelapa Sawit Pada Komposit Berbasis Semen Untuk Peredam Panas Ilham Ary Wahyudie; Sulistiana Rachmadini; Muhammad Riva’i
Infotekmesin Vol 15 No 2 (2024): Infotekmesin, Juli 2024
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v15i2.2259

Abstract

In palm oil plantations, the fruit and empty bunches are usually used, while waste such as oil palm fronds (PKS) is often disregarded. However, pruned PKS can be utilized in the production of environmentally friendly building materials that serve as heat insulators. PKS waste can be used as an additional aggregate to create eco-friendly bricks by grinding it into powder and mixing it with sand and cement. A multilevel factorial experimental design was used to vary the percentage of PKS powder and the sand-cement ratio. The analysis results showed that the addition of PKS powder significantly improved heat insulation, resulting in a temperature reduction of up to 19.54°C in a mixture containing 20% PKS powder and a sand-cement ratio of 2:1. The percentage of PKS powder also significantly influenced heat insulation capacity, with an F-value of 7.0 compared to an F-table value of 3.88. Additionally, the interaction between the sand-cement ratio and the percentage of PKS powder had an F-value of 19.56, indicating a solid impact on heat insulation capability.
Pengaruh Panjang Serat Pelepah Kelapa Sawit dan Persentase Serbuk Cangkang Telur terhadap Kekuatan Impak Komposit Bermatriks Polyester Aidil Pratama; Juanda Juanda; Ilham Ary Wahyudie; Sukanto Sukanto; Amril Reza
Jurnal Inovasi Teknologi Terapan Vol. 4 No. 2 (2026): Jurnal Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33504/jitt.v4i2.462

Abstract

Utilising oil palm frond fibre and eggshell powder provides an opportunity to convert plantation and food waste into functional composite constituents. This study examined the effects of fibre length and eggshell-powder content on the Charpy impact strength of a polyester-matrix composite. A 3 × 3 full-factorial design was applied using fibre lengths of 60, 70, and 80 mm and eggshell-powder contents of 3, 6, and 9 wt.%. Three specimens were prepared for each combination by hand lay-up, giving 27 specimens, and were tested with reference to ISO 179-1. The highest mean impact strength was 50.72 kJ/m² for the 80 mm–9% combination, whereas the lowest was 15.52 kJ/m² for the 80 mm–6% combination. Two-way ANOVA indicated significant effects of fibre length, eggshell-powder content, and their interaction (p < 0.001). The interaction confirms that a longer fibre does not automatically improve impact strength unless it is accompanied by an appropriate filler content. The investigated composite is therefore positioned as an initial candidate for car bumper components.
Analisis Sifat Termal Dan Kuat Impak Green-Sandwich Composite Berdasarkan Variasi Susunan Lapisan (Stacking Sequence) Isep Abdul Rojak; Ilham Ary Wahyudie; Juanda Juanda
Jurnal Inovasi Teknologi Terapan Vol. 4 No. 2 (2026): Jurnal Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33504/jitt.v4i2.463

Abstract

The use of environmentally friendly composite materials has been increasingly developed as an alternative to conventional materials for automotive components. This study aimed to investigate the effect of stacking sequence variations on the thermal insulation performance and impact strength of Green Sandwich Composites reinforced with coconut coir fiber, woven fiberglass, a balsa wood core, and polyester resin. The specimens were fabricated using the hand lay-up method combined with vacuum bagging, followed by thermal insulation and Charpy impact testing. The data were analyzed using One-Way ANOVA. The results showed that the GF–NF–C–NF–GF configuration exhibited the best performance, achieving a thermal insulation efficiency of 40.65% and an impact strength of 198.98 kJ/m². However, the One-Way ANOVA results indicated that stacking sequence variations had no statistically significant effect on either parameter at a 5% significance level. Nevertheless, the GF–NF–C–NF–GF configuration is recommended as the optimum stacking sequence because it provides the best combination of thermal and mechanical performance for environmentally friendly automotive bumper applications.
Co-Authors Aidil Pratama Amril Reza Isep Abdul Rojak Juanda Juanda Muhammad Riva’i Sukanto Sukanto Sulistiana Rachmadini