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All Journal Manutech : Jurnal Teknologi Manufaktur Infotekmesin Jurnal Inovasi Teknologi Terapan
Ilham Ary Wahyudie
Politeknik Manufaktur Negeri Bangka Belitung
Agriculture, Biological Sciences & Forestry Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Industrial & Manufacturing 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.
Pengaruh Penambahan Molase Pada Resin Dan Lamanya Perendaman Larutan NaOH Terhadap Kekuatan Bending Pada Komposit Serat Waru Riko Febriansyah; Muhammad Subhan; Ilham Ary Wahyudie; Yuliyanyo Yuliyanto
Manutech : Jurnal Teknologi Manufaktur Vol. 18 No. 01 (2026): Manutech: Jurnal Teknologi Manufaktur
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33504/manutech.v18i01.734

Abstract

Composites are engineered materials resulting from the combination of two or more different materials, each possessing its own advantages. Waru tree bark fibers (Hibiscus tiliaceus) have significant potential as natural reinforcement in composites, especially after undergoing alkali treatment. Furthermore, molasses possesses good adhesive characteristics to enhance the mechanical and thermal properties of composites when applied as an additive in the resin matrix. However, the combined use of waru fiber and molasses in polyester resin is still rarely studied. This research aims to investigate the effect of molasses addition to BTQN 157 polyester resin in three variations (3%, 5%, and 7%), as well as the effect of fiber immersion duration in 6% NaOH solution (for 1 hour, 2 hours, and 3 hours) on the bending strength of the composite. Specimen preparation utilized the ASTM D790 standard with dimensions of 120mm in length, 12mm in width, and 4mm in height. The results showed that the highest bending strength reached 67.7 MPa at a composition of 15% fiber, 80% resin, and 5% molasses after 2 hours of immersion. This indicates that the addition of molasses and the immersion time significantly affect the mechanical strength of the composite.
Analisis Optimasi Briket Batu Bara Dengan Perekat Molase Dan Tepung Tapioka Menggunakan Metode Response Surface Methodology (RSM) Martin Martin; Ilham Ary Wahyudie
Manutech : Jurnal Teknologi Manufaktur Vol. 18 No. 01 (2026): Manutech: Jurnal Teknologi Manufaktur
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33504/manutech.v18i01.767

Abstract

The need for environmentally friendly auxiliary materials capable of maintaining high temperatures in furnaces is crucial to accelerate the tin smelting process in the tin smelting industry. Coal briquettes have great potential as an alternative fuel due to their high calorific value and resistance to extreme heat. However, an optimal composition that meets industrial requirements particularly in terms of physical quality and energy efficiency has yet to be determined. This study aims to optimize the production of coal briquettes using natural binders in the form of molasses and tapioca flour. The method used is Response Surface Methodology (RSM) with a Central Composite Design (CCD) to evaluate the effect of independent variables such as binder percentage (10%, 12.5%, 15%), drying temperature (70°C, 90°C, 110°C), pressing pressure (8 MPa, 10 MPa, 12 MPa), and heating time (60, 90, 120 minutes) on the quality of the briquettes. The observed responses were moisture content and compressive strength. The analysis showed that drying temperature had the most significant influence in reducing moisture content, while pressure and binder percentage played key roles in increasing compressive strength. The optimal combination for the highest compressive strength (808 kPa) was obtained at 10% binder, 70°C drying temperature, 8 MPa pressure, and 120 minutes of heating. Meanwhile, the lowest moisture content (4.00%) was achieved at 12.5% binder, 90°C, 8 MPa, and 90 minutes. Thus, the RSM method proved effective in optimizing process parameters for coal briquette production to meet the needs of the tin smelting industry.
Analisis Kemampuan Bata Ringan sebagai Material Peredam Panas dalam Konstruksi Dinding Herlina Silalahi; Ilham Ary Wahyudie; Yuli Dharta
Manutech : Jurnal Teknologi Manufaktur Vol. 18 No. 01 (2026): Manutech: Jurnal Teknologi Manufaktur
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33504/manutech.v18i01.796

Abstract

 Lightweight bricks are materials used in the construction of building walls, produced through a mixture of cement, water, and sand. In several cases that occur in buildings, especially regarding indoor heat, the spaces become less comfortable to occupy. This study aims to determine the effect of curing duration on heat insulation. A full factorial method was applied in the experimental design, with curing durations of 19, 25, 26, 32, and 39 days for heat insulation testing, and 19 and 27 days for sound insulation testing. The GSP Temperature and Humidity Data Logger GSP6 was used for data collection. The results of this study showed that the best specimen for heat insulation was at a curing duration of 32 days, with an average test result of 29.35 °C, while the lowest performance was found in specimens with a curing duration of 26 days, with a value of 31.4 °C. These results indicate that lightweight bricks cured for 32 days provide the most effective thermal insulation for rooms and buildings
Co-Authors Aidil Pratama Amril Reza Herlina Silalahi Isep Abdul Rojak Juanda Juanda Martin Martin Muhammad Riva’i Muhammad Subhan Riko Febriansyah Sukanto Sukanto Sulistiana Rachmadini Yuli Dharta Yuliyanyo Yuliyanto