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All Journal JURNAL PENDIDIKAN TAMBUSAI Journal of Renewable Energy and Mechanics
Lazrisyah, Sutan
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Automotive Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences

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Analisa Pengaruh Putaran Mata Pisau Pencacah terhadap Hasil Cacahan Pada Mesin Pencacah Kapasitas 500 Kg/Jam Pebriawan, Aryadi; Rahman, Jhoni; Saragih, Sehat Abdi; Lazrisyah, Sutan
Jurnal Pendidikan Tambusai Vol. 8 No. 3 (2024)
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

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Abstract

Pelepah Sawit merupakan salah satu alternative pakan ternak sapi. Pada penelitian ini, kita akan melakukan analisa mesin pencacah yang dirancang untuk mengolah pelepah kelapa sawit, dengan kapasitas 500 kg/jam. Langkah- langkah merancang alat, menyiapkan alat dan bahan,menentukan putaran mesin, meletakkan bak penampung pada corong keluar, kemudian memasukkan pelepah sawit ke corong masuk, pelepah sawit tersebut akan keluar melalui corong keluar, hidupkan stopwatch pada saat pelepah sawit mulai tercacah, kemudian cacahan akan tertampung pada bak penampung setelah itu lakukan proses penimbangan. Sehingga dapat diketahui kapasitas mesin tersebut. Hasil dari perhitungan utama menunjukkan kinerja mesin pada berbagai kecepatan operasi, khususnya 1500 rpm dan 3000 rpm, yang memberikan wawasan tentang kapasitas dan efektivitas mesin ini dilengkapi dengan kapasitas maksimum 500 kg/jam, terhitung dari berat awal pelepah. Mesin yang digunakan adalah mesin bensin dengan daya 8 hp dan alat ini memiliki empat pisau yang mampu menghasilkan potongan berukuran sekitar 1-2 cm.
THE EFFECT OF VARIATION OF MIXTURE OF IJUK FIBER AND COCONUT FIBER WITH EPOXY MATRIX ON THE MECHANICAL STRENGTH OF COMPOSITE Li, Elia Fransisco Manalu; Yulianto, Dody; Kurniadi, Shandy; Prasetyo, Ari; Saragih, Sehat Abdi; Lazrisyah, Sutan; Rahman, Jhonni; Hastuti, Kurnia; Elfiano, Eddy
Journal of Renewable Energy and Mechanics Vol. 8 No. 02 (2025): REM VOL 8 No 02 2025
Publisher : UIR PRESS

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Fibre-based composites continue to be investigated and developed as alternative materials to replace metals, primarily due to their advantageous properties of high strength and lower weight compared to metals. This study aims to fabricate fibre composites using ijuk fibres and coconut coir fibres as a matrix with epoxy resin. In this research, mixtures of ijuk fibres, coconut coir fibres, and epoxy resin were prepared in proportions of 20%:30%:50%, 25%:25%:50%, and 30%:20%:50%. The highest bending strength test results were obtained in specimen 3, which consisted of a mixture of 30% palm fibre, 20% coconut fibre, and 50% epoxy resin.  This specimen had a tensile strength value of 18.93 MPa and an impact value of 0.387 Joules/mm². This result can be attributed to the increasing proportion of ijuk fibres and the decreasing proportion of coconut coir fibres within the epoxy resin matrix, which influences the elastic strain of the fibre core (cellulose). The higher cellulose content of ijuk fibres enhances bending strength and impact resistance. This is supported by the impact (Charpy) test results, where specimen 3 (30%: 20%:50%) exhibited the highest bending and impact strength. Conversely, increasing the proportion of coconut coir fibres reduced the impact strength. The fracture morphology revealed that specimen 1 exhibited a brittle fracture, whereas specimens 2 and 3 exhibited a fibrous brittle fracture.
Co-Authors Ari Prasetyo Eddy Elfiano Hastuti, Kurnia Jhonni Rahman Kurniadi, Shandy Li, Elia Fransisco Manalu Pebriawan, Aryadi Rahman, Jhoni Sehat Abdi Saragih Yulianto, Dody