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Wibowo, Midarto Dwi
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Automotive Engineering Chemistry Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences

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Pelatihan Pemilahan Sampah Plastik di Bank Sampah Bareng Mukti BUMKal Sidomulyo Maju, Bambanglipuro, Bantul Saputra, Andri; Satwikanitya, Pani; Ellianto, Mario Sarisky Dwi; Arief, Diana Ross; Winursito, Isananto; Supomo, Supomo; Arifin, Uma Fadzilia; Wibowo, Midarto Dwi; Suwarno, Yuli; Utami, Ratri Retno
Jurnal Pengabdian Masyarakat AKA Vol 4, No 1 (2024): Juni 2024
Publisher : Politeknik AKA Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55075/jpm-aka.v4i1.235

Abstract

Sampah plastik di Kalurahan Sidomulyo, Bambanglipuro, Bantul belum dikelola dengan baik, sehingga menimbulkan penumpukan di Bank Sampah Bareng Mukti. Pengabdian kepada masyarakat ini bertujuan untuk mengedukasi masyarakat Kalurahan Sidomulyo terkait pemilahan sampah plastik. Pelatihan dilakukan dengan metode sosialisasi dan praktik kepada 16 peserta anggota Bank Sampah Bareng Mukti dan masyarakat Kalurahan Sidomulyo. Evaluasi pelatihan dilakukan dengan metode angket menggunakan kuesioner. Hasil pelatihan menunjukkan bahwa Peserta pelatihan mampu membedakan dan memiliah sampah plastik. Sampah plastik dipilah berdasarkan 7 jenis plastik. Penilaian terhadap pemahaman materi yang diberikan selama pelatihan menunjukkan peningkatan yang signifikan, dimana rata-rata nilai peserta meningkat dari 82,25 pada pre-test menjadi 96,06 pada post-test. Respons peserta terhadap materi dan instruktur sangat positif, dengan rata-rata penilaian keseluruhan mencapai 91,52, menunjukkan tingkat kualitas yang sangat baik. Evaluasi terhadap berbagai aspek pelatihan yang dilakukan oleh peserta juga mencerminkan hasil yang memuaskan, dengan rata-rata penilaian mencapai 4,21.
ANALISA VARIASI UKURAN RUNNER SYSTEM DAN MELT TEMPERATURE TERHADAP FILL TIME, CONFIDENCE OF FILL DAN QUALITY PREDICTION Ellianto, Mario Sariski Dwi; Wibowo, Midarto Dwi; Wirakusuma, Kadex Widhy
Otopro Vol 20 No 2 Mei 2025
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/otopro.v20n2.p51-55

Abstract

The technology used in making plastic products is injection molding technology. In general, the products obtained are notof good quality, so simulations need to be carried out to determine the correct production process parameters. This research focuseson determining the effect of variations in runner system size and variations in melt temperature on the optimal fill time, confidence offill, and quality prediction for tensile test specimen products. This research uses a simulation approach with the help of software. Thesimulation method is used to determine the characteristics of each variation in runner size and melt temperature. The type of runnerlayout used is a grid layout type, the runner system type is H balance, and the cross-section type is circle-shaped. Variations in runnersize use runner diameters of 2 mm, 3 mm, and 4 mm. Variations in melt temperature use values of 190°C, 200°C, and 210°C. Thesimulations carried out include fill time analysis, confidence of fill analysis, and quality prediction analysis. Simulation results of filltime, confidence of fill and quality prediction at a runner diameter of 2 mm and melt temperature of 210°C yielded optimal values of0.7524 s, 100% and 95.1%, respectively. These conditions ensured that the molten polymer remained in a fully flowable state untilcomplete cavity filling was achieved, thereby minimizing the risk of defects and enhancing cycle time efficiency. An increase in runnersize results in reduced flow resistance of the molten material, while the melt temperature remains within the process conditionsrecommended by the material manufacturer.
Co-Authors Arief, Diana Ross Ellianto, Mario Sariski Dwi Isananto Winursito, Isananto Mario Sarisky Dwi Ellianto Ratri Retno Utami RR. Ella Evrita Hestiandari Satwikanitya, Pani Supomo Supomo Suwarno, Yuli Uma Fadzilia Arifin, Uma Fadzilia Wirakusuma, Kadex Widhy