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All Journal Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Jurnal Pengabdian Masyarakat Bhinneka
Hartawan, Beny
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Computer Science & IT Economics, Econometrics & Finance Education Engineering Industrial & Manufacturing Engineering Mechanical Engineering Public Health

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Pengaruh Variasi Temperatur Artificial Aging Terhadap Kekerasan Aluminium 6061 Daur Ulang Hartawan, Beny; Marjuni, Teuku; Ansyori, Anang; Prastyo, Adi
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 10, No 2 (2024): Oktober
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jmkn.v10i2.10699

Abstract

Recycling is an effective way of utilising scrab ships waste in aluminium 6061. One of the alternative ways of utilisation is by casting. Increasing the hardness of the material after casting is done by artificial aging. The purpose of the study was to determine the material of the castings after the aging process. The research method was sand casting, 450°C heat treatment, quenching with (used) oil cooling media and artificial aging at 190°C with varying resistance times of 1, 5 and 11 hours. The test results after the aging process showed an increase in hardness. The average hardness without heat treatment is 38.6 HRB, then the average hardness of sample AA 1 is 39 HRB. When compared to the average without heat treatment and after aging, it has increased by 1.03%. Then, the average hardness of sample AA 5 is 45 HRB, which is greater than the hardness value of AA 1 hour. Meanwhile, the average hardness of sample AA 11 experienced a decrease in hardness of 40.4 HRB. Structural observations of samples without heat treatment have quite large pores and porosity. The addition of holding time during aging is thought to have no effect on grain size, but changes the grain shape. At the grain boundary of the aluminium matrix, the alloying element Si forms a precipitate that is thought to be a Mg2Si compound. This precipitate is likely to form during the aging process.A maximum 250 word abstract in English in italics with Times New Roman 11 point. Abstract should be clear, descriptive, and should provide a brief overview of the problem studied. Abstract topics include reasons for the selection or the importance of research topics, research methods and a summary of the results. Abstract should end with a comment about the importance of the results or conclusions brief.
Peningkatan Kompetensi Mahasiswa Mesin Melalui Pelatihan Autocad Berbasis Project Hartawan, Beny; Marjuni, Teuku; Prastyo, Adi; Ansyori, Anang; Hadi, R Agung Efriyo; Ojahan R, Tumpal
Jurnal Pengabdian Masyarakat Bhinneka Vol. 4 No. 3 (2026): Bulan Februari
Publisher : Bhinneka Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58266/jpmb.v4i3.1056

Abstract

Kemampuan dalam menguasai autocad merupakan hal yang penting dalam penugasan pembelajaran. Penguasaan autocad merupakan skill dasar yang penting bagi mahasiswa dalam mendukung pemahaman dan penerapan gambar teknik. Tujuan pelatihan ini adalah untuk meningkatkan kompetensi pengoperasian autocad berbasis project. Metode kegiatan terbagi dalam tiga fase, yaitu tahap perencanaan dan persiapan, implementasi kegiatan di lapangan, serta tahap evaluasi Evaluasi efektivitas dilakukan dengan pendekatan kuantitatif deskriptif melalui pre-test dan post-test. Hasil evaluasi menunjukkan peningkatan dari 52 % menjadi 72% yang mencerminkan peningkatan dalam pemahaman teknis mahasiswa dalam menggambar part mesin berbasis project. Peningkatan nilai terjadi secara merata pada tiga aspek yaitu penguasaan fungsi tools, keterampilan menggambar tampak dan potongan, serta kerapihan penyusunan gambar. Pemahaman dan keterampilan berbasis praktik langsung lebih efektif untuk pembelajaran keterampilan teknis.  
Co-Authors Anang Ansyori Hadi, R Agung Efriyo Marjuni, Teuku Ojahan R, Tumpal Prastyo, Adi