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Trio Setiyawan
Politeknik Negeri Semarang
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Rancang Bangun Mesin Pengepres Sandal Mengunakan Roll Kapasitas 60 Buah/Menit dengan Daya Motor 1 HP Trio Setiyawan; Hening Krisna Adi; Satrio Erdiano; Syahru Romadlon Fanani; Mohammad Samsul Bakhri
Journal of Mechanical Engineering and Applied Technology Vol 1, No 1 (2023): Volume 1 Issue 1 Year 2023 (March 2023)
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jmeat.v1i1.4723

Abstract

Abstract  Sandals are a need for clothing for humans which are often used in daily activities, sandals are also protective feet for humans when on the move. Sandals have several types, in this study the authors focused on sandals made of EVA sponge. In the process of making sandals, several machines or tools are needed to make sandals, while this research will focus on the sandal adhesive machine. The purpose of this research is to get perfect gluing results in making sandals using a roll machine which is easy to operate and maintain. The method used is gluing the sandal material through a rolling process which is carried out by placing the sandal material on the guide table, then the sandal material is entered between a pair of pulling rolls and then forwarded to the next pair of rolls for the gluing or pressing process. The end result of the design of this sandal pressing machine can produce sandals production capacity of up to 60 sandals/minute with a shear stress strength of 0.1505 N/mm².
ANALISIS PENGARUH MANUFAKTUR MESIN PENGASAH PISAU PLANAR TERHADAP AKURASI GEOMETRI DAN KEKASARAN HASIL ASAHAN Trio Setiyawan; Riles Melvy Wattimena; Timotius Anggit Kristiawan; Sugeng Irianto; Nur Hidayati; Dieta Wahyu Asry Ningtias; Annisa Kesy Garside; Mahendra Setya Pratama
Journal of Economic, Business and Engineering (JEBE) Vol. 7 No. 2 (2026): April
Publisher : Universitas Sains Al Qur'an

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32500/jebe.v7i2.11018

Abstract

Dalam industri pengolahan kayu performa pemotongan sangat bergantung pada stabilitas sudut asah dan tingkat kekasaran permukaan mata pisau, dimana sudut yang konsisten dan kekasaran permukaan mata pisau mempengaruhi  hasil dari serutan kayu semangkin presisi sudut dan rendahnya tingkat kekasaran maka semangkin tinggi pula kwalitas hasil serutan. Penelitian ini berfokus pada manufaktur mesin pengasah mata pisau planer guna mengidentifikasi parameter pengasahan yang optimal serta mengatasi limitasi metode manual yang memiliki kendala pada aspek presisi dan efisiensi waktu. Metodologi penelitian yang diterapkan adalah pendekatan Shigley, yang mencakup tahapan identifikasi kebutuhan, formulasi masalah, sintesis, analisis, optimasi, hingga evaluasi. Prosedur pengujian komprehensif dilakukan untuk memvalidasi kinerja sistem, meliputi: Uji Fungsional dan Keamanan memastikan seluruh mekanisme bekerja dengan baik dan aman. Uji Akurasi Geometris mengukur deviasi sudut asah menggunakan shadowgraph untuk memverifikasi kesesuaian antara sudut aktual dengan setting awal pada penjepit. Uji Parameter Kinematik menganalisis kecepatan rotasi batu gerinda dan kecepatan translasi meja. Hasil penelitian merealisasikan mesin pengasah pisau planer. Data eksperimental menunjukkan bahwa mesin ini mampu menghasilkan sudut pengasahan dengan tingkat presisi mencapai 99,55%. Pada parameter kecepatan sliding 0,011 m/s, diperoleh nilai kekasaran permukaan rata-rata (Ra​) sebesar 0,06 µm. Capaian ini menunjukkan kualitas permukaan yang jauh lebih unggul dibandingkan metode manual yang menghasilkan nilai Ra​ sebesar 0,235 µm. Implementasi mesin ini diharapkan dapat menjadi substitusi metode pengasahan konvensional untuk mencapai hasil yang lebih optimal, sekaligus menjadi referensi akademik dalam pengembangan teknologi pemesinan serupa di masa depan.
Optimalisai Mesin Injection Molding Tipe Screw Dengan Produk Klem Pipa Setengah Inci Untuk Mendapatkan Parameter Produksi Dieta Wahyu Asry Ningtias; Trio Setiyawan; Timotius Anggit kritiawan; Fariz Wisda Nugraha; Mulyono; Muhammad Karel Islam
Journal of Mechanical Engineering and Applied Technology Vol. 4 No. 2 (2026): VOLUME 4 ISSUE 2 YEAR 2026 (JULY 2026)
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jmeat.v4i2.7696

Abstract

Injection molding is one of the methods used in plastic forming processes. This study aims to optimize the screw-type injection molding machine owned by the Mechanical Engineering Laboratory of xyz, which was previously developed by xyz students. However, the machine had several deficiencies, such as barrel leakage, imperfect feeding in the hopper, unstable heating, and only one mold variation, namely a keychain mold. These issues reduced production efficiency.To overcome these problems, the machine was optimized by replacing and redesigning components such as the screw, barrel, nozzle, transmission system, and by adding a new mold variation for a half-inch pipe clamp. The method involved redesigning and testing based on operational parameters, including feeding temperature, injection temperature, injection time, and cooling time.Testing was conducted by setting the feeding temperature to 220°C, injection temperature between 290°C and 310°C, injection time between 11 and 13 seconds, and cooling time of 15 seconds. The material used was polypropylene (PP). The results showed that the optimal parameters were a feeding temperature of 220°C, injection temperature of 310°C, injection time of 12 seconds, and cooling time of 15 seconds. The resulting product exhibited good quality, with complete filling, no flash, and smooth surface finish. This indicates that the optimized screw-type injection molding machine successfully resolved the previous issues.
Rancang Bangun dan Uji Kinerja Mesin Pengolah Slurry Limbah Biogas Menjadi Pupuk Kompos Menggunakan Sistem Pemanas Gas LPG Timotius Anggit Kristiawan; Trio Setiyawan; Iman Mujiarto; Atikah Ayu Janitra; Muhammad Ghani Ardi Kurniawan; Rafiq Afrizal Bastian
Journal of Mechanical Engineering and Applied Technology Vol. 4 No. 2 (2026): VOLUME 4 ISSUE 2 YEAR 2026 (JULY 2026)
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jmeat.v4i2.7835

Abstract

Slurry generated from biogas production is commonly treated using natural drying methods, which require 30–40 days and intensive manual handling, making the process inefficient for practical applications. This study aims to design and evaluate the performance of a slurry drying machine utilizing LPG as a heat source with a capacity of 30 kg. The research methodology includes mechanical design, fabrication, and experimental performance testing. The developed system integrates a mechanical pressing unit, a rotating mixing drum, and a controlled LPG heating system driven by a 0.5 HP electric motor. Experimental results show that the machine is capable of reducing slurry mass by approximately 50% within 150 minutes at an operating temperature of 65–70 °C. The highest drying rate occurred during the first 30 minutes, indicating rapid moisture removal in the initial stage. Compared to conventional solar drying, the proposed system significantly reduces processing time while improving drying consistency. The developed machine demonstrates potential as an efficient and practical solution for converting biogas slurry into value-added organic fertilizer, particularly for small to medium-scale farming applications.
Co-Authors Annisa Kesy Garside Atikah Ayu Janitra Dieta Wahyu Asry Ningtias Fariz Wisda Nugraha Hening Krisna Adi Iman Mujiarto Mahendra Setya Pratama Mohammad Samsul Bakhri Muhammad Ghani Ardi Kurniawan Muhammad Karel Islam Mulyono Nur Hidayati Rafiq Afrizal Bastian Riles Melvy Wattimena Rizal Ma’ruf Satrio Erdiano Sugeng Irianto Syahru Romadlon Fanani Timotius Anggit Kristiawan Tristan Yusuf Annas