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All Journal Jurnal Penelitian Fisika dan Aplikasinya (JPFA) OPSI Community Development Journal: Jurnal Pengabdian Masyarakat Jurnal Teknik Industri Terintegrasi (JUTIN)
Safarudin Ramdhani
Universitas Dian Nuswantoro
Humanities Astronomy Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Public Health

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Finite Element Analysis of Patient Specific Bone Plate with Ti6Al4V Material Selection Talitha Asmaria; Dita Ayu Mayasari; Safarudin Ramdhani; Muhammad Satrio Utomo; Daniel Panghihutan Malau; Dhyah Annur; Muhammad Ikhlasul Amal; Ika Kartika
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol. 11 No. 1 (2021)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v11n1.p83-93

Abstract

A patient-specific implant is a designed implant that considers the needs of a specialized patients condition. In several surgical cases, the implant design needs to be adjusted based on the patient bones surface to suit the bone morphometry. This study aims to conduct the finite element analysis to investigate the stress distribution alongside the plate to consider clinical implementation. A bone plate has been designed following an adult pelvic bone shape for the pelvic fractures clinical case management. An FEA was accomplished to analyse the implant designs performance and estimate the installations clinical failures before the manufacturing process. The FEA calculation achieved the highest number of von misses stresses (VM) on the pelvic bone plate by 3.616 MPa. The obtained VM number on the simulation is smaller than the yield strength of Ti6Al4V. It concludes that the customized iliac plates design using Ti6Al4V can have excellent mechanical strength and can withstand the loading. Additional similar simulation using another software strengthen the results.
The organic waste management supply chain performance evaluation strategy uses an Interpretive Structural Modeling approach Arsiwi, Pramudi; Setyaningrum, Ratih; Talitha, Tita; Ramdhani, Safarudin
OPSI Vol 17, No 1 (2024): ISSN 1693-2102
Publisher : Jurusan Teknik Industri Fakultas Teknologi Industri UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/opsi.v17i1.12242

Abstract

National Waste Management Information System shows that the amount of waste handled in Semarang City over the last three years has decreased with an average decline index of 1.06% per year. This is reinforced by the results of interviews with the Semarang City Environmental Service, that the handling of organic waste is still very limited because so far the handling has been more focused on an-organic waste. Therefore, it is necessary to evaluate supply chain performance to determine the constraints in organic waste management from upstream to downstream. Based on the research results using the Interpretive Structural Modeling (ISM) method through a focus group discussion process involving eight experts in the field of waste management, it is known that the supply chain performance for handling organic waste in Semarang City has 11 elements of constraints, which are divided into seven priority levels. The element with the highest priority is related to the availability of organic waste supplies, while the element with the lowest priority is technological innovation and the application of appropriate technology. Improving the performance of organic waste management supply chains should focus on elements according to priority.
Simulasi 3D Desain Cetakan Kanstin Menggunakan Finite Element Analysis Safarudin Ramdhani; Muhammad Fatihul Abror; Tita Talitha
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 7 No. 3 (2024): July
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v7i3.32257

Abstract

Current developments in infrastructure development have led to tight competition in the precast concrete industry. The use of precast concrete materials supports the need for infrastructure development, especially roads and city parks, especially kanstin products. The ability of precast concrete molds depends on several factors such as design, material and manufacturing process. The aim of this research is to find out the most optimal kanstin mold design in terms of structure and service life. The Finite Element Analysis (FEA) method is used to model and analyze the performance of kanstin mold designs. Based on 3D simulations of eight geometries with WF and UNP steel frames with ASTM A36 and AISI 1081 material types, it is still within safe limits for yield strength values. The largest von mises value is for WF AISI B and the smallest for UNP AISI A. It can be concluded that the highest life cycle is for the ASTM A36 material type UNP frame thickness A with a value of 7.91 years, while the von misess stress value is 113.4 Mpa which is still below the yield strength of ASTM A36 .
PENDAMPINGAN INOVASI PRODUK PELET MAGGOT UNTUK MENINGKATKAN DAYA SAING UMKM REPRO Safarudin Ramdhani; Ratih Setyaningrum; Pramudi Arsiwi; Tita Talitha
Community Development Journal : Jurnal Pengabdian Masyarakat Vol. 5 No. 6 (2024): Vol. 5 No. 6 Tahun 2024
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/cdj.v5i6.36134

Abstract

UMKM REPRO merupakan salah satu UMKM di Kota Semarang, yang bergerak di bidang olahan limbah organik dan budidaya maggot. Saat ini produk yang dihasilkan oleh UMKM REPRO hanya berupa maggot fresh dan maggot kering yang biasa diperjualbelikan dengan para peternak untuk pakan ikan maupun unggas. Maggot fresh memiliki kandungan nutrisi yang cukup baik bagi ternak, namun memiliki keterbatasan yaitu life cycle product yang sangat pendek yaitu hanya berkisar 3 – 5 hari sebelum akhirnya berkembang biak menjadi pupa. Hal ini berdampak pada keterbatasan jangkauan area pemasaran UMKM REPRO, yaitu hanya di area Semarang Raya. Melalui Program Kemitraan Masyarakat ini, tim telah berhasil melakukan Pendampingan pada UMKM REPRO dan menghasilkan diversifikasi produk turunan maggot berupa pelet magot. Produk pelet magot tersebut memiliki siklus hidup produk lebih panjang dibanding magot fresh serta memiliki kualitas yang lebih baik. Hal ini akan berdampak pada meningkatnya daya saing UMKM REPRO dikarenakan produk tersebut berpotensi mendukung tercapainya jangkauan area pemasaran yang lebih luas dan peningkatan omset penjualan UMKM REPRO kedepannya.
Co-Authors Daniel Panghihutan Malau Dhyah Annur Dita Ayu Mayasari, Dita Ayu Ika Kartika Muhammad Fatihul Abror Muhammad Ikhlasul Amal Muhammad Satrio Utomo Pramudi Arsiwi Ratih Setyaningrum Talitha Asmaria Tita Talitha