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All Journal J-Proteksion: Jurnal Kajian Ilmiah dan Teknologi Teknik Mesin Jurnal Inovasi Teknologi Terapan
Juanda Juanda
Politeknik Manufaktur Negeri Bangka Belitung
Agriculture, Biological Sciences & Forestry Automotive Engineering Computer Science & IT Electrical & Electronics Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Analisis Simulasi Pengaruh Kekuatan Material Komposit Paduan HGM dan Serat Alami terhadap Kekuatan Uji Balistik Boy Rollastin; Juanda Juanda; Yudi Oktriadi; Galindra Mutiara Rahmatullah
J-Proteksion Vol 7, No 2 (2023): J-Proteksion
Publisher : Universitas Muhammadiyah Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32528/jp.v7i2.11474

Abstract

Seiring perkembangan teknologi rekayasa material, banyak cara dilakukan guna meningkatkan elastisitas rompi anti peluru berfungsi dengan baik dan bobot seringan mungkin agar bisa direkomendasi sebagai material peredam. Tujuan penelitian ini untuk mengetahui sifat mekanik dari material komposit dengan komposisi Hollow Glass Microsphere, epoxy, dan serat daun nanas untuk pengujian balistik standar NIJ 0101.06. Metode yang digunakan Analisis pada software finite element dengan variasi ketebalan 10mm (24.12gr serat; 21.6gr HGM; 134.87gr Epoxy), 15mm (36.18gr serat; 32,4gr HGM; 202,30gr Epoxy) dan 20mm (48.24 gr serat; 43.2gr HGM; 269,73gr Epoxy). Hasil analisis nilai deformasi yakni 49,823mm, 36,1mm dan 24,974mm. Nilai tegangan berturut-turut 20,604Mpa, 17,451Mpa dan 49,231Mpa. Nilai regangan berturut-turut 0,04056 mm/mm, 0.066374 mm/mm, dan 0,3323 mm/mm, sedangkan energi kinetik pada rompi 195,94 J, 168,31 J dan 110,59 J. 
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 Galindra Mutiara Rahmatullah Ilham Ary Wahyudie Isep Abdul Rojak Oktriadi, Yudi Rollastin, Boy Sukanto Sukanto