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Mudjijanto, Mudjijanto
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Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Economics, Econometrics & Finance Electrical & Electronics Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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PELATIHAN PENINGKATAN KETRAMPILAN MICROSOFT OFFICE BAGI SISWA SMP PGRI BLUNGUN Wahyusari, Retno; Sulistiyo, Yogi; Nagari, Bintang Putra; Rahmasari, Nagita; Al Hadi, Fahreza; Ayu, Anggi Mutia; Masuri, Masuri; Mudjijanto, Mudjijanto; Widyassari, Adhika Pramitha
Fokus ABDIMAS Vol 3, No 1: April 2024
Publisher : STIE Pelita Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34152/abdimas.3.1.65-68

Abstract

SMP PGRI Blungun has a computer practice room which is only used for computer-based national exams (UNBK). This condition is very unfortunate to see that there are Skills/Information and Communication Technology lessons. In this lesson the teacher only provides theory without any practical work. Success in education is supported by computer skills or digital literacy. It cannot be denied that information and communication technology is a primary need for many groups. Training on the introduction and use of Microsoft Office (MS Word, MS Excel, and MS Power Point). This is one of the computer skills activities that can prepare you for entering the world of work. As a result of the training, students were able to operate MS Word, MS Excel, and MS Power Point, where previously students had never operated Microsoft Office. The training also produces practicum modules that can be used by students to improve skills, as well as increase students' interest in learning to use computers or digital literacy.
Analisis Pengaruh Kedalaman Pemakanan terhadap Getaran dan Kekasaran Permukaan dalam Proses Pembubutan Baja AISI 4140 Mudjijanto, Mudjijanto; Achmadi, Ali; Agustino, Agil
SIMETRIS Vol 19 No 1 (2025): SIMETRIS
Publisher : Sekolah Tinggi Teknologi Ronggolawe Cepu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51901/simetris.v19i1.543

Abstract

This research was conducted to evaluate the effect of varying depth of cut on vibration levels and surface roughness during the turning process of AISI 4140 steel. The experiments were carried out using a lathe machine equipped with a carbide cutting tool, a spindle speed of 265 rpm, and a feed rate of 0.1 mm/rev. The depth of cut was varied at 0.5 mm, 1 mm, and 1.5 mm. Experimental results indicated that increasing the depth of cut significantly influenced the rise in vibration and surface roughness values. At a depth of 0.5 mm, the recorded vibration was 0.4 mm/s with a surface roughness (Ra) of 4.074 µm. Meanwhile, at depths of 1 mm and 1.5 mm, vibration increased to 1.1 mm/s and 1.8 mm/s, with surface roughness values of 4.216 µm and 5.758 µm, respectively. These findings suggest that greater depths of cut lead to higher cutting forces, which in turn elevate both vibration and surface roughness. Therefore, selecting appropriate machining parameters is crucial to achieving optimal surface quality in turning processes
Co-Authors Achmadi, Ali Adhika Pramita Widyassari Agustino, Agil Al Hadi, Fahreza Ayu, Anggi Mutia Masuri, Masuri Nagari, Bintang Putra Rahmasari, Nagita Sulistiyo, Yogi Wahyusari, Retno