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Politeknik Negeri Semarang, Indonesia
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INDONESIA
Jurnal Rekayasa Mesin
Published by Politeknik Negeri Semarang
ISSN : 14116863     EISSN : 25407678     DOI : -
Core Subject : Engineering,
Mechanical Engineering
Rekayasa Mesin(d/h MANDEGANI) diterbitkan sejak 1997, dengan frekuensi 3 kali setahun. Misi : media komunikasi bagi dosen, praktisi, dan ilmuwan tentang karya ilmiah (scientific article) hasil-hasil penelitian, survei, studi kasus dan telaah pustaka yang erat hubungannya dengan teknik mesin, meliputi topik/tema seperti perancangan mesin, instalasi, perawatan & perbaikan mesin, bahan konstruksi & komponen mesin, teknik pengerjaan logam, pembuatan komponen mesi n, pengujian bahan dan komponen mesin, teknik pengukuran & kontrol kualitas proses/produk industri manufaktur, manajemen & teknik produksi industri manufaktur, pembentukan dan pengembangan desain produk, aplikasi komputer dalam sistem kendali & operasi mesin, mesin-mesin kalor & fluida, sistem pembangkitan energi, mesin pendingin & pengkondisian udara, pembangkitan energi alternatif & terbarukan.
Arjuna Subject : -
Articles 22 Documents
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Search results for , issue "Vol 18, No 2 (2023): Volume 18, Nomor 2, Agustus 2023" : 22 Documents clear
The Characterization of Mechanical and Chemical Properties of Recycled Styrofoam Waste Employing Extrusion Process Budi Triyono; Destri Muliastri; Devi Eka Septiyani Arifin
Jurnal Rekayasa Mesin Vol 18, No 2 (2023): Volume 18, Nomor 2, Agustus 2023
Publisher : Mechanical Engineering Department - Semarang State Polytechnic

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jrm.v18i2.4615

Abstract

Styrofoam waste is a polystyrene plastic-based waste in the form of foam with low density. Scavengers or recyclers are not interested in receiving styrofoam waste because of its light density which makes it ineffective in transportation and storage. Styrofoam waste can actually be converted into solid polystyrene products through a thermal-extrusion process but data regarding the optimum operating temperature and the characteristics of the resulting solid polystyrene products are not yet available. The purpose of this study was to investigate the properties of solid polystyrene products resulting from recycled styrofoam waste and determine the optimum temperature of the thermal-extrusion treatment process to be compared with the characteristics of the original polystyrene based on the results of tensile and impact tests. In this study, the processing was carried out using the thermal-extrusion method; Styrofoam is melted and extruded into a mold to produce polystyrene solids. The research was carried out with variations in extrusion temperature at 180°C, 200°C, and 220°C. The polystyrene solids are then molded into tensile and impact test specimens by injection molding. The results showed that the optimal extrusion temperature was 200°C with tensile and impact strength values of 27.55 MPa and 1,069 j/m2, respectively. Compared to the original polystyrene, the tensile strength value is 25.3% lower and the impact strength value is 29.5% lower. The decrease in the tensile and impact strength values is due to the shortening of the molecular bonds in the recycled polystyrene during the thermal-extrusion treatment process. Even though the tensile strength and impact are still lower, the use of styrofoam waste using the thermal-extrusion method has the potential to be developed at the production and commercialization stage because the resulting product has good economic value and can also reduce the use of original polystyrene and at the same time can solve the problem of styrofoam waste.
Analisa Parameter Pencetakan Terhadap Sifat Mekanik Polylactic Acid Menggunakan Mesin Cetak 3 Dimensi Fused Deposition Modelling Slamet Saefudin; Dini Cahyandari; Ilham Yustar Afif; Samsudi Raharjo; Muhammad Subri; Bagus Irawan
Jurnal Rekayasa Mesin Vol 18, No 2 (2023): Volume 18, Nomor 2, Agustus 2023
Publisher : Mechanical Engineering Department - Semarang State Polytechnic

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jrm.v18i2.4195

Abstract

Additive manufacturing dengan metode fused deposition modelling (FDM) banyak diminati dan terus dikembangkan dalam berbagai aplikasi industri. Pada penelitian ini Polylactic Acid (PLA) dicetak menggunakan printer 3D FDM dengan berbagai parameter untuk dijadikan sampel uji tarik. Parameter pencetakan meliputi kepadatan isi, tinggi lapisan, suhu cetak, pola isi, sudut cetak dan orientasi untuk mendapatkan dan menentukan hasil kekuatan tarik terbaik. Pencetakan parameter ini dibahas secara rinci. Hasil percobaan pengaruh variasi pencetakan menunjukkan adanya perbedaan kekuatan tarik PLA.

Page 3 of 3 | Total Record : 22

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