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All Journal JOURNAL OF ELECTRICAL AND SYSTEM CONTROL ENGINEERING Celebes Journal of Community Services
Fikran
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Humanities Economics, Econometrics & Finance Education Electrical & Electronics Engineering Social Sciences

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Pengaruh Temperatur Austenit dengan Holding Time 2 Jam Terhadap Kekerasan dan Ketangguhan Baja ST 42 Nitha; Yafet Bontong; Petrus Sampelawang; Lantana Dioren Rumpa; Nofrianto Pasae; Fikran
JOURNAL OF ELECTRICAL AND SYSTEM CONTROL ENGINEERING Vol. 7 No. 2 (2024): Journal of Electrical and System Control Engineering
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jesce.v7i2.11332

Abstract

Steel is an alloy metal with iron as the basic element and carbon as the main alloying element. The carbon content in steel ranges from 0.2% to 2.1% by weight according to the grade. The function of carbon in steel is as a hardening element. This research aims to determine the effect of austenite temperature with a holding time of 2 hours on the hardness and toughness of ST 42 steel. The material for this research is ST 42 steel. This research was carried out experimentally using the Vickers method and impact method, with temperature variations of 950℃, 960℃, 970℃, 980℃. From the results of the hardness research, it can be concluded that the higher the austenite temperature variation with a holding time of 2 hours, the higher the hardness value in ST 42 steel, where the highest value at a temperature of 980℃ is 204.8 kg/mm2, and the lowest is in a normal specimen with a value of 186.6 kg/mm2, and from the toughness research results it can be concluded that the higher the austenite temperature variation with a holding time of 2 hours, the lower the toughness value of ST 42 steel, where the highest value at an austenite temperature of 960°C is 2,023 Joules/mm2 and the lowest in normal specimens it is 0.866 Joules/mm2.
Pemanfaatan Botol Plastik Bekas Sebagai Alat Irigasi Tetes Sederhana untuk Efisiensi Air pada Tanaman Hortikultura di Lembang Pa’tengko Kabupaten Tana Toraja Nofrianto Pasae; Nitha; Petrus Sampelawang; Yafet Bontong; Fikran; Suri Toding Lembang
Celebes Journal of Community Services Vol. 5 No. 1 (2026): December - May
Publisher : STIE Amkop Makassar, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37531/celeb.v5i1.3546

Abstract

Kegiatan pengabdian kepada masyarakat ini bertujuan untuk memberikan solusi terhadap permasalahan pengairan tanaman hortikultura di Lembang Pa’Tengko, sekaligus menangani permasalahan sampah plastik yang belum terkelola dengan baik. Melalui pelatihan pembuatan irigasi tetes sederhana berbahan dasar botol plastik bekas, masyarakat dibekali keterampilan praktis yang mudah diterapkan, efisien dalam penggunaan air, dan ramah lingkungan. Metode ini sangat cocok diterapkan di wilayah Lembang Pa’Tengko yang masyarakatnya memiliki aktivitas padat, sehingga tidak memiliki cukup waktu untuk melakukan penyiraman tanaman secara manual. Selain membantu proses pertanian hortikultura, kegiatan ini juga mendorong kesadaran lingkungan dengan memanfaatkan sampah botol plastik menjadi alat yang berguna dalam menerapkan teknologi sederhana. Hasil dari kegiatan menunjukkan antusiasme dan keterlibatan aktif masyarakat dalam proses pembuatan dan penerapan irigasi tetes, serta adanya potensi keberlanjutan teknologi ini dalam mendukung pertanian lokal dan pengelolaan sampah berbasis masyarakat.
Co-Authors Lembang, Suri Toding Nitha Nitha Nitha Nofrianto Pasae Rumpa, Lantana Dioren Sampelawang, Petrus Yafet Bontong