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Fatigue Analysis on Hybrid Sugar Palm-Kenaf Fibre Reinforced Polypropylene Composites Bachtiar, Dandi; Siregar, Januar Parlaungan; Zulfadhli; Masri; Arhami; Siregar, Ramdhan Halid; Jalil, Saifuddin Muhammad
Journal of Engineering and Science Vol. 3 No. 1 (2024): January-June 2024
Publisher : Yayasan Kawanad

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56347/jes.v3i1.209

ABSTRACT Hybrid natural-natural fibre reinforced polymer composites become attractive alternative to seek the friendly-environmentally materials. Study on the durability level of the hybrid composites have the importance reason due to the role in application as structural function. This study focuses on examining the fatigue strength of polypropylene polymer composites reinforced with hybrid sugar palm-kenaf fibres. The hybrid composite materials were prepared by mixing the fibres and matrix with several compositions. There are five composition types of specimens that evaluated, such as 70:10:10, 70:15:15, 70:20:10, 80:10:10 and 90:5:5. The hybrid composites were composed by PP, sugar palm fibre and kenaf fibre. Furtheremore the tensile test were conducted to find the value of ultimate tensile strength for every specimens of hybrid composites. The fatigue test also were conducted with four level of stress i.e. 80%, 70%, 60% and 50%. The results show that in the lower level of stress, the hybrid composites with higher content of sugar palm fibre posses the better performance of fatigue life compare to the others

Representasi Kemiskinan dalam Novel Kembara Rindu karya Habiburrahman El Shirazy: Kajian Sosiologi Sastra Pangestu, Elsa Namira; Zulfadhli
Persona: Kajian Bahasa dan Sastra Vol. 3 No. 4 (2024)
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jpers.v3i4.297

This research aims to discuss the forms, causes, and effects of poverty as expressed in the novel Kembara Rindu. This research uses descriptive literary research methodology, by observing words, phrases, clauses, and sentences related to poverty in the novel. The data collection techniques used include reading and understanding the novel, recording relevant data, and organizing them based on the research questions. Data analysis consisted of several stages: (1) identifying data related to the form of poverty; the causes of poverty, and its impact in the novel, (2) analyzing the collected data, and (3) presenting conclusions related to the issue of poverty in the form of a thesis. The findings of this study reveal that the forms of poverty found in the novel are absolute and relative poverty. The factors that cause poverty are the low quality of the labor force, difficult access to capital ownership, low technological capabilities, and inefficient use of resources. The effects of poverty are unemployment, crime, school dropouts, and difficult access to health.

Fatigue Performance of Sugar Palm Fibre-Reinforced Thermoplastic Polyurethane Composites with Varying Fibre Content Bachtiar, Dandi; Siregar, Januar Parlaungan; Suhaeri; Masri; Zulfadhli
Journal of Engineering and Science Vol. 4 No. 1 (2025): June
Publisher : Yayasan Kawanad

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56347/jes.v4i1.267

This study investigates the fatigue behavior of sugar palm fibre (SPF)-reinforced thermoplastic polyurethane (TPU) composites with varying fibre contents (10 wt%, 20 wt%, and 30 wt%). The composites were fabricated using extrusion followed by hot press moulding. Tensile tests were conducted in accordance with ASTM D638 to determine the ultimate tensile strength (UTS), and fatigue tests were performed under stress levels of 80%, 70%, 60%, and 50% of the UTS, following ASTM D7791. The results indicate that an increase in fibre content leads to a reduction in both tensile strength and fatigue life, likely due to poor interfacial bonding and fibre agglomeration. Fatigue life was found to be significantly higher at lower stress levels across all fibre contents. These findings provide valuable information about the potential and limitations of SPF/TPU composites for applications involving cyclic loading, particularly in lightweight and sustainable material applications

PEMETAAN JARINGAN JALAN DAN TINGKAT KERUSAKAN JALAN MENGGUNAKAN SISTEM INFORMASI GEOGRAFIS (SIG) (Studi Kasus: Kecamatan Karang Baru Kabupaten Aceh Tamiang) Elsa, Elsa Nadia; zulfadhli
Jurnal Media Teknik Sipil Samudra Vol 6 No 1 (2025): Mei 2025
Publisher : Program Studi Teknik Sipil, Fakultas Teknik. Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jmtss.v6i1.11580

Kecamatan karang baru merupakan kecamatan yang terdapat di Kabupaten Aceh Tamiang yang menjadi penghubung kota atau kabupaten. Volume kendaraan kondisi aspal yang mudah rusak, mulai dari kerusakan berlubang, retak kulit buaya, dan kerusakan lainnya. Penelitian ini bertujuan untuk melakukan perhitungan pada jalan yang mengalami kerusakan dengan menggunakan metode Pavement Condition Index (PCI) dan memodelkan pemetaan jaringan jalan dan pemetaan tofografi di Kecamatan Karang Baru Berbasis Sistem Informasi Geografis (SIG). Metode yang digunakan dalam penelitian ini dengan menganalisis titik-titik yang terdapat kerusakan dengan menggunakan Arcgis student version, Panjang jalan yang akan diteliti yaitu 17,3 km dibagi dalam 3 ruas jalan dengan STA jalan Arteri nasional 0+000 - 14+161, STA jalan Arteri Simpang Tugu Upah – Simpang V Rantau 0+000 - 2+406, STA jalan Kolektor Simpang 3 Upah – Sungai Iyu 0+000 - 0+600. Dari hasil pemodelan jaringan jalan yang telah di input titik kerusakan jalan, ternyata masih banyak terdapat jalan yang mengalami kerusakan terutama di ruas jalan Arteri sebagai penghubung antar provinsi Sumetera Utara dan Aceh dengan presentase untuk masing-masing jenis kerusakan yakni: Lubang 71,43%, Retak Kulit Buaya 7,14%, Tambalan 9,52%, Retak Pinggir 4,76%, Sungkur 2,38%, Pelepasan Butiran 2,38%, dan Alur 2,38%. Setelah dilakukan analisa perhitungan menggunakan metode PCI, didapatkan nilai rata-rata untuk ruas jalan, yaitu: jalan Arteri Nasional 71,47% (Baik), jalan Arteri Simpang Tugu Upah – Simpang V Rantau 60,1 (Baik) dan Kolektor Simpang 3 Upah – Sungai Iyu 81% (Sangat Baik). penanganan yang perlu dilakukan adalah penambalan dan lapisan tambahan.

Effect of Maleic Anhydride Polypropylene on Flexural Properties of Hybrid Kenaf - Sugar Palm Fibre Reinforced Polypropylene Composites Bachtiar, Dandi; Siregar, Januar Parlaungan; Iqbal, Mohd; Masri; Zulfadhli; Muhibbuddin
Journal of Engineering and Science Vol. 2 No. 2 (2023): July-December 2023
Publisher : Yayasan Kawanad

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56347/jes.v2i2.169

This study was focused on the characterize the hibridisation of kenaf and sugar palm fibre in reinforcing the polypropylene matrix. Addition of MAPP (Maleic Anhydride Polypropylene) was used as compatibilizing agent with variation of 2%, 3% and 5%. The specimen materials were prepared with 30% amounts of fibres while the ratios between kenaf and sugar palm fibre are 10:20, 15:15 and 20:10. The composites were fabricated using melt mixer technique and followed by compression molding process. The specimens were cut according ASTM Standard D790 for conducting the flexural testing. After testing done, the results shown that flexural strength of composites tend to decreased when the content of MAPP increased. The ultimate flexural strength was attained at 2% MAPP addition of the hybrid composites with 20% kenaf fibres. Among the composites with different ratios, the hybrid composites that contain more kenaf fibres exhibit the higher value in flexural strength than the composites that contain more sugar palm fibres.

Fatigue Analysis on Hybrid Sugar Palm-Kenaf Fibre Reinforced Polypropylene Composites Bachtiar, Dandi; Siregar, Januar Parlaungan; Zulfadhli; Masri; Arhami; Siregar, Ramdhan Halid; Jalil, Saifuddin Muhammad
Journal of Engineering and Science Vol. 3 No. 1 (2024): January-June 2024
Publisher : Yayasan Kawanad

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56347/jes.v3i1.209

ABSTRACT Hybrid natural-natural fibre reinforced polymer composites become attractive alternative to seek the friendly-environmentally materials. Study on the durability level of the hybrid composites have the importance reason due to the role in application as structural function. This study focuses on examining the fatigue strength of polypropylene polymer composites reinforced with hybrid sugar palm-kenaf fibres. The hybrid composite materials were prepared by mixing the fibres and matrix with several compositions. There are five composition types of specimens that evaluated, such as 70:10:10, 70:15:15, 70:20:10, 80:10:10 and 90:5:5. The hybrid composites were composed by PP, sugar palm fibre and kenaf fibre. Furtheremore the tensile test were conducted to find the value of ultimate tensile strength for every specimens of hybrid composites. The fatigue test also were conducted with four level of stress i.e. 80%, 70%, 60% and 50%. The results show that in the lower level of stress, the hybrid composites with higher content of sugar palm fibre posses the better performance of fatigue life compare to the others

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