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All Journal Yumary: Jurnal Pengabdian kepada Masyarakat Journal of Applied Science, Engineering and Technology (J. ASET) Prosiding Seminar Nasional Hasil Penelitian Sains, Teknik dan Aplikasi Industri Fakultas Teknik Universitas Lampung
Nafrizal
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Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Social Sciences Other

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Pembuatan Screw Fiksasi Tulang Neck Femur Tipe Cannulated Screws dari Bahan Magnesium Menggunakan Mesin Bubut Konvensional Arinal Hamni; I Surya; E Syarifudin; N Tanti; Nafrizal; G Akhyar
Prosiding Seminar Nasional Ilmu Teknik Dan Aplikasi Industri Fakultas Teknik Universitas Lampung Vol. 5 (2022): SINTA
Publisher : Fakultas Teknik Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (219.686 KB) | DOI: 10.23960/prosidingsinta.v5i.77

Abstract

Fraktur merupakan kondisi dimana terjadi kerusakan bentuk dan fungsi dari tulang tersebut yang berupa patahan atau pecahan dengan serpihan yang disebabkan oleh trauma langsung, kelelahan otot, atau karena osteoporosis. Untuk mengatur posisi tulang yang mengalami fraktur yaitu dengan pemasangan internal fiksasi. Internal fiksasi yang digunakan mengacu pada fiksasi plate and screw untuk memfasilitasi penyembuhan. Penelitian ini bertujuan untuk mengetahui pembuatan serta bentuk dari pada pahat ulir guna proses pembuatan screw yang ideal untuk fiksasi internal patah tulang (neck feamur). Pembuatan pahat ulir menggunakan bahan HSS dan mesin bubut CNC, dimana dimensi yang pahat ada 4 jenis untuk mendapatkan ukuran dan geometri yang sesuai dengan standar. Hasil penelitian menunjukan bahwa pahat yang screw tipe cannulated screw dengan dimensi pahat jarak pitch 2,75 mm, lebar ujung pahat ulir sebesar 2,3 mm dengan sudut alfa 25° dan 5° sudut beta serta masing-masing sudut memiliki radius 1,2 mm dan 0,8 menghasil ukuran yang sesuai dengan standar. Screw yang dihasilkan dengan dimensi diameter mayor 6,5 mm toleransi 0 sampai -0,15, minor 3,0 mm dengan tolerasi 0 sampai -0,15, pitch 2,75 mm, e (tebal ulir) 0,2 mm, sudut alfa 25? dengan radius 1,2 mm, sudut beta 5? dengan radius 0,08 mm.
Bridge Structure Study on the Dome of the Boarding School’s Mosque at Pringsewu District in Bandar Lampung Wijaya, Angga; Kurniawan, Panji; Nafrizal; Risano, A Yudi Eka
Journal of Applied Science, Engineering and Technology Vol. 2 No. 2 (2022): December 2022
Publisher : INSTEP Network

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Islamic architecture as a foundation in building Muslim worship facilities in the form of mosques has developed its meaning along with advances in science and technology. One of the concepts in designing a mosque is to ensure that the congregation can close the rows of rows. Based on the verses of the Qur'an regarding the priority of rows in congregational prayers, effort (rashshus shufūf) in congregational prayers is something that is ordered in the Qur'an and hadith.It thenmanifested in the Islamic architectural design of the Klangenan Insan Mulia Boarding School Mosque in the form of providing a center column so that the prayer halls are not interrupted due to the presence of middle columns. As a consequence of the design, the structure of the mosque required several adjustments which were well planned and efficient. This research was conducted using a qualitative method with descriptive analysis supported by modeling simulation and load strength analysis using ETAB V. 16 software, so that the results obtained in the form of structural calculations for steel rafter roof construction using the bridge structure model. The steel rafter roof construction with the bridge structure model was chosen due to several factors including: strength, practicality, and design flexibility.
Magnesium and its alloys as Biomaterial for bone repair: advances, challenges and future direction in mechanical and tissue engineering research Jasmawati, Noor; Nafrizal; Zulhanif; Ibrahim, Fauzi; Sukmana, Irza
Journal of Applied Science, Engineering and Technology Vol. 5 No. 1 (2025): June 2025
Publisher : INSTEP Network

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47355/jaset.v5i1.77

Abstract

Interest in the application of biodegradable bone screw is driven by the increasing knowledge on biomedical materials and tissue engineering field. Currently, various polymeric- as well as metallic-based materials have been used as degradable bone screw. Biodegradable material is a desirable feature for bone screw since the goal is that it uses as a temporary structure holding a growing bone tissues until the bone fracture has sufficiently healed. Among others, magnesium and its alloys have a potential chance to serve as biodegradable bone screw applications, as it has mechanical properties similar to natural bone, lightweight, and biocompatible approved. This article aims to report current development and future potential use of magnesium-based metal for bone screw application. Techniques on manufacturing process, mechanical performance, and biocompatibility assessment of magnesium and its alloys are highlighted.
Sosialisasi Pemanfaatan Mesin Pencacah dalam Pengelolaan Sampah Mendukung SDGs Desa Peswaran Indah Prayitno, Hadi; Amrul; Irsyad, Muhammad; Nafrizal; Supono
Yumary: Jurnal Pengabdian kepada Masyarakat Vol. 5 No. 4 (2025): Juni
Publisher : Penerbit Goodwood

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35912/yumary.v5i4.3801

Abstract

Purpose: The purpose of this community service program in Desa Pesawaran Indah is to enhance public understanding and participation in sustainable waste management by introducing the 7R principles: Rethink, Refuse, Reduce, Repurpose, Reuse, Recycle, and Rot. Methodology: The program utilized a structured socialization approach, which included developing educational materials and conducting interactive discussions with village officials and members of the Women’s Farmers Group (KWT). Each 7R principle was introduced, practical applications were explored, and local waste management challenges were addressed. Results: The program resulted in a substantial increase in participants' understanding, with comprehension levels rising from an initial 2-4 participants to 18-21 participants who fully understood key principles like "Rethink" and "Recycle" by the program's conclusion. Conclusions: The program successfully enhanced community knowledge and engagement in sustainable waste management. Future initiatives could benefit from practical training to reinforce knowledge and empower participants to implement waste management strategies, contributing to the development of environmentally conscious communities aligned with broader sustainability goals. Limitations: The limitations of the study include the absence of practical demonstrations and the limited sample size, which may affect the generalizability of the findings. Contribution: This program contributes to the field of environmental education by promoting sustainable waste management practices within rural communities and aligning local actions with global sustainability goals.
Co-Authors A.Yudi Eka Risano Amrul Angga Wijaya, Angga Arinal Hamni E Syarifudin G Akhyar Hadi Prayitno, Hadi I Surya Ibrahim, Fauzi Irza Sukmana, Irza Jasmawati, Noor Muhammad Irsyad N Tanti Panji Kurniawan Supono Zulhanif