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All Journal STEAM Engineering : Journal of Science, Technology, Education And Mechanical Engineering Prima Abdika: Jurnal Pengabdian Masyarakat
Anwari, Muhammad Syahrul
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Arts Humanities Automotive Engineering Education Energy Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Social Sciences Other

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ANALISIS KEGAGALAN PADA PATAHAN MATA BOR TIPE HIGH SPEED STEEL Ariyanto, Sudirman Rizki; Pratama, Muhammad Yandi; Warju, Warju; Hidayatullah, Rachmad Syarifudin; Anwari, Muhammad Syahrul
Steam Engineering Vol. 6 No. 2 (2025): STEAM Engineering, Vol. 6, No. 2, Maret 2025
Publisher : Program Studi Pendidikan Teknik Mesin, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37304/jptm.v6i2.19625

Abstract

Drill bit failure in the drilling process often occurs due to exposure to mechanical, thermal, and chemical loads during operation. Nachi HSS drill bits, as critical components in the manufacturing industry, are prone to sudden wear and breakage due to dynamic processes involving material fragmentation, friction, and increased local temperatures. This study analyses the root cause of Nachi HSS drill bit failure through fracture investigation, chemical composition, and microstructure. The analysis methods include macroscopic testing to identify fracture patterns, optical microscopy to evaluate surface deformation, and X-ray Fluorescence (XRF) testing to verify material composition. The results showed that the fault was a brittle fracture due to a mismatch in chemical composition: molybdenum (Mo) levels were not detected. At the same time, chromium (Cr) and vanadium (V) only reached 3.85% and 0.95%, 0.45% lower than factory standards. This deficiency reduces resistance to thermomechanical loads, triggering stress concentration and rapid crack propagation during the drilling of ST37 steel material at a speed of 1,800 RPM. These findings emphasize the importance of quality control of material composition and optimization of operating parameters to prevent premature failure.
Pendampingan Penyusunan Rencana Gerakan Peduli dan Berbudaya Lingkungan Hidup di Sekolah (PBLHS) untuk Mendukung Implementasi Sekolah Adiwiyata Nasional di MI Miftahul Ulum Gresik Warju, Warju; Ariyanto, Sudirman Rizki; Umaroh, Susi Tri; Anwari, Muhammad Syahrul; Irmansah, Rafli; Shafa, Farzana Syazwanasyah Ilyasa
Prima Abdika: Jurnal Pengabdian Masyarakat Vol. 6 No. 1 (2026): Volume 6 Nomor 1 Tahun 2026 (Maret 2026)
Publisher : Program Studi Pendidikan Guru Sekolah Dasar Universitas Flores Ende

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37478/abdika.v6i1.7933

Abstract

One strategic effort to implement education for sustainable development is through the School Environmental Care and Culture Movement, known in Indonesia as Gerakan Peduli dan Berbudaya Lingkungan Hidup di Sekolah (PBLHS), formerly the Adiwiyata program. This community service program aimed to assist teachers at MI Miftahul Ulum Gresik in preparing a four-year PBLHS action plan, an annual PBLHS action plan, and lesson plans integrated with environmental education. The integration focused on global, local/regional, and school-based environmental issues to support the school’s readiness for the 2025 National Adiwiyata School Candidate selection. The specific target of this program was to improve teachers’ competence in developing lesson plans integrated with environmental education in accordance with Law No. 32 of 2009 on Environmental Protection and Management, Minister of Environment and Forestry Regulation No. P.52/MENLHK/SETJEN/KUM.1/9/2019 on the PBLHS Movement, and Regulation No. P.53/MENLHK/SETJEN/KUM.1/9/2019 on the Adiwiyata Award. The program was conducted through direct education and training consisting of five stages: preparation, implementation, evaluation, reporting, and dissemination. The preparation stage included needs assessment, development of presentation materials, and preparation of training equipment. The implementation stage involved material delivery and guided practice in preparing PBLHS planning documents and environmentally integrated lesson plans. Evaluation was carried out by reviewing the lesson plan products and collecting participants’ feedback through questionnaires. The results of this community service program included a four-year PBLHS action plan, an annual PBLHS action plan, and one lesson plan integrated with environmental aspects based on global, local/regional, and school-level issues.
Co-Authors Ariyanto, Sudirman Rizki Hidayatullah, Rachmad Syarifudin Irmansah, Rafli Pratama, Muhammad Yandi Shafa, Farzana Syazwanasyah Ilyasa Umaroh, Susi Tri WARJU