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All Journal Jurnal Teknik Mesin Journal of Renewable Energy and Mechanics
Kurniadi, Shandy
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Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences

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Design and Construction of a Pineapple Skin Cutting Machine with a Pneumatic Actuator Drive Powered by a Solar Module with a Capacity of 200 WP Arizona, Rafil; Kurniadi, Shandy
Jurnal Teknik Mesin (Journal Of Mechanical Engineering) Vol 14, No 1 (2025)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/jtm.v14i1.25515

Abstract

The main objective of this research is to carried out the design of a pineapple cutting machine with a pneumatic actuator powered by a solar module with a capacity of 200 WP. The research methods used are literature study and experimental laboratory. The laboratory experimental method is very suitable to be applied to post-harvest agricultural machines with a small capacity where the research is only focused on the success of the actuator system in carrying out pineapple cutting movements automatically by utilizing pressurized air coming from the compressor. The variation in air pressure for the pneumatic actuator is set at the air pressure, namely 3, 4, and 5 Bar. The actual peeling capacity using air pressure of 3 Bar resulted in 160 pineapple cutting/per hour, 170 fruit/per hour for 4 Bar, 173 bar for 5 bar, and 173 fruit/per hour manually.
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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Abstract

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 Arizona, Rafil Eddy Elfiano Hastuti, Kurnia Jhonni Rahman Lazrisyah, Sutan Li, Elia Fransisco Manalu Sehat Abdi Saragih Yulianto, Dody