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All Journal ROTOR: JURNAL ILMIAH TEKNIK MESIN Jurnal Pengabdian Masyarakat Prosiding Seminar Nasional Unimus
Trio Nur Wibowo
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Humanities Automotive Engineering Computer Science & IT Education Energy Engineering Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Nursing Public Health Other

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PENGARUH VARIASI WAKTU SHOT PEENING TERHADAP STRUKTUR MIKRO DAN KEKERASAN PERMUKAAN PADA MATERIAL IMPLAN AISI 304 Trio Nur Wibowo; Priyo Tri Iswanto; Bambang Hari Priyambodo; Nur Amin
ROTOR 2016: ROTOR Special Edition
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

AISI 304 stainless steel is a type of implant material with a relatively low cost. However, its mechanical properties need to be improved so it can compensate the AISI 316L and titanium alloy materials. Fatigue characteristic is also one of the important criteria that must be evaluated in order to achieve overall service performance when the material is under dynamic loads. The hardness surface and the nano-structures formation can delay the propagation of fatigue crack initiation and can reduce the corrosion rate. This study is conducted to determine the changes in microstructure and hardness of AISI 304 for shot peening process. The surface treatment by shot peening process is performed by setting the variation of the shooting time of 0, 5, 10, 20, 30 and 40 minutes at a shooting pressure of 7 bar using the Steel Shot diameter of 0.6 mm with a hardness of 40-50 HRC. The distance between the nozzle and the specimen surface is set at 100 mm. The microstructure is analyzed by optical microscope with a magnification of 100 times and photographed using optilab, which is connected to a computer. Surface hardness is tested using a Micro Vickers with indentation load of 10 grams for 10 seconds. The results show that refined microstructure layer is formed in the shot peening surface and the hardness is also increased gradually as well as shot peening time of 0, 5, 10, 20, 30 and 40 minutes. This also increase the hardness number of 241, 404, 418, 437, 481 and 496 VHN. To sum up, the shot peening can be used to refine the grain and to increase the hardness. Keywords: AISI 304, shot peening, microstructure, Vickers hardness
Pengaruh Variasi Waktu Shot Peening pada Material ST 37 Terhadap Kekerasan Permukaan dan Struktur Mikro Trio Nur Wibowo; Hartono Hartono; Warso Warso
Prosiding Seminar Nasional Unimus Vol 2 (2019): Tantangan Implementasi Hasil Riset Perguruan Tinggi untuk Industrialisasi
Publisher : Universitas Muhammadiyah Semarang

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Material ST 37 merupakan jenis material yang mudah didapat dipasaran dengan biaya yang relatif lebih murah. Namun, sifat mekaniknya perlu ditinggkatkan sehingga lebih baik dan mememiliki life time yang lebih lama. Dengan menggunakan metode shot peening maka diharapkan terjadi perubahan bentuk struktur mikro dan nilai kekerasan menjadi lebih meningkat. Penelitian ini difokuskan untuk mengetahui perubahan struktur mikro dan nilai kekerasan yang terjadi akibat proses shot peening dengan durasi penembakan 0, 5, 10, 20, 30, dan 40 menit. Tekanan udara pada proses shot peening sebesar 7 bar. Diameter steel shot 0,8 mm yang memiliki nilai kekerasan 40-50 HRC dan jarak nozzle dengan permukaan spesimen sejauh 100 mm. Struktur mikro dianalisadengan mikroskop optilab dengan pembesaran 200 kali dan difoto menggunakan optilab yang terhubung dengan komputer. Pengujian kekerasan permukaan diuji dengan menggukanan alat uji kekerasan  micro Vickers dengan menggunakan  beban indentasi sebesar 10 gram selama 10 detik. Dari hasil  penelitian menunjukan terbentuknya lapisan  struktur mikro yang lebih halus pada  permukaan yang di shot peening. Hasil pengujian kekerasan  mengindikasikan terjadinya penigkatan kekerasan sebanding  dengan durasi shot peening yang dilakukan. Perubahan  signifikan terjadi pada spesimen raw material dengan nilai kekerasan sebesar 187,14 VHN meningkat drastis menjadi 215,02 VHN pada spesimen dengan durasi shot pening 5 menit. Peningkatankekerasan cenderung menurun sebanding dengan peningkatan durasi shot peening, namun tidak begitu signifikan. Durasi 10, 20, 30, dan 40 menit memiliki nilai kekerasan sebesar 202,80, 180,43, 181,2,dan 180,01VHN.Kata kunci: ST 37, shot peening, struktur mikro, vickers hardness
Peningkatan Kualitas Pengajaran Gambar Teknik Melalui Pelatihan Solidworks Bagi Guru Sekolah Menengah Kejuruan Muhammadiyah Kabupaten Banyumas Muhammad Muryanto; Trio Nur wibowo; Syaukaty Yasinta; Muhammad Ramadhani S. L; Irfauji Firman Hidayat
Jurnal Pengabdian Masyarakat - PIMAS Vol. 4 No. 2 (2025): Mei
Publisher : LPPM Universitas Harapan Bangsa Purwokerto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35960/pimas.v4i2.1852

Abstract

Technical drawing training based on ISO standards using SolidWorks is a strategic step to enhance the competencies of vocational high school (SMK) teachers, particularly in aligning the learning process with industrial needs. This community service activity aimed to provide practical knowledge and skills to SMK Muhammadiyah teachers in Banyumas Regency regarding internationally standardized technical drawing (ISO 128, ISO 5456, ISO 7200) and its implementation through parametric Computer-Aided Design (CAD) software, namely SolidWorks. The training methods included lectures, hands-on practice, group discussions, pre-tests, and post-tests. The pre-test results showed that the participants' average score was only 47.5, indicating a low level of understanding of technical drawing standards and the use of SolidWorks. However, after the training, the average score increased significantly to 79.6, reflecting a 67.5% improvement. These findings demonstrate that training based on hands-on practice and case studies can effectively enhance teachers' technical competencies. This program also strengthens the role of teachers as agents of change in vocational education based on Industry 4.0 technology. It is hoped that this activity will be followed by advanced training sessions, such as motion simulation and stress analysis using CAD.
Co-Authors Bambang Hari Priyambodo Hartono Hartono Irfauji Firman Hidayat Muhammad Muryanto Muhammad Ramadhani S. L Nur Amin Priyo Tri Iswanto Syaukaty Yasinta Warso Warso