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All Journal Rekayasa Mesin Journal of Engineering and Management in Industrial System International Journal of Mechanical Engineering Technologies and Applications (MECHTA) TEKAD : Teknik Mengabdi
Sonief, Achmad As'ad
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Humanities Automotive Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences

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USULAN PENERAPAN LEAN SIX SIGMA, FMEA DAN FUZZY UNTUK MENINGKATKAN KUALITAS PRODUK BOTOL SABUN CAIR Ellianto, Mario Sarisky Dwi; Santoso, Purnomo Budi; Sonief, Achmad As'ad
JEMIS (Journal of Engineering & Management in Industrial System) Vol. 3 No. 1 (2015)
Publisher : Industrial Engineering Department, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jemis.2015.003.01.5

Abstract

Abstract The goal of lean six sigma method is to solve the problems of waste, especially defect. The goal of failure mode and effect analysis (FMEA) method is to be able to identify potential failures in the production process of e.g. liquid soap bottle in order to reduce production failure and to have reference from FMEA highest risk priority number for corrective actions. The goal of fuzzy method is to improve priority risks of FMEA method. By using fuzzy method the priority risks with the same value can be eliminated so that only one highest value can be used as a reference for corrective action. Result of lean six sigma method are four types of critical defects i .e. dirty black, lines in the wall of the bottle, neck narrowed / clogged, and uneven surfaces. One result of the FMEA calculation with the highest risk priority number (RPN) is dirty black defect.This is due to less attention to the composition of the material and contamination / burnt crust. The highest score of RPN is 48 and ranked as the first priority for actions. While result of fuzzy calculations is the highest fuzzy risk priority number (FRPN) with value of 3.327831. This is caused by dirty black defect due to less attention to the composition of the material. Therefore from these results of the highest causes of defects can be used as a reference for corrective action.
THE EFFECT OF SIMULATED VERTICAL VIBRATION AND STACKING PATTERN ON QUALITY OF TOMATOES Rayyan, Rayyan; Novareza, Oyong; Sonief, Achmad As'ad
International Journal of Mechanical Engineering Technologies and Applications Vol. 7 No. 1 (2026): January - June
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776//MECHTA.2026.007.01.2

Abstract

Simplification of tomato fruit transportation was applied as the preparation. Three tomato fruit Computer-Aided Design (CAD) geometries had been arranged as the face-centered cubic (FCC), jumble, and traditional patterns. Boundary condition, meshing, and contact were determined to ensure the pattern could be simulated as real as possible. Modal analysis simulation is used to find out the natural frequency and mode shape for each pattern. The result was then extracted for static structure analysis. 5N, 10N, and 15N forces are placed on the top of the fruit pattern. Deformation and normal stress pattern results were analyzed as the reaction when the tomatoes respond to external forces. This research is finding the FCC pattern gives more minimal damage to the fruit.
Utilization of Leaf Chopping Machine as an Environmental School Support at SDN Mojolangu 2 Malang Municipality Sonief, Achmad As'ad; Darmadi, Djarot B.; Widodo, Agung Sugeng
TEKAD : Teknik Mengabdi Vol. 4 No. 2 (2025)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.tekad.2025.04.2.8

Abstract

Effective and environmentally sound learning is the main goal of the school because it is able to integrate theory with real practice in the surrounding environment. One example is the utilization of organic waste, such as dry leaves and twigs, to be processed into compost for the school garden. This approach not only supports practical science lessons, but also fosters environmental awareness early on in elementary school students. So far, science learning is often only theoretical in the classroom. To make it easier for students to understand and make learning fun, tools such as a leaf shredder are needed. This machine helps solve the problem of using manual tools such as small scissors that are less efficient. The shredder can turn organic waste into small pieces that are ready to be processed into compost, supporting creative and innovative activities in learning. The solution offered is training in the design and manufacture of leaf shredding machines as well as the introduction of a machine model that is easy to use and maintain. This machine is donated to the school to support the Adiwiyata School program, which is an environmentally friendly school. The chopping machine serves as a learning tool for students and school managers, encouraging creative, productive, and environmentally friendly characters. The results obtained include a model of the chopping machine along with a guide to its use. With this machine, the learning atmosphere becomes more interactive, increases student understanding, and supports the formation of environmentally friendly characters. The level of user satisfaction with this chopping machine is very high, making it a real contribution in creating an environmentally friendly and innovative school environment.
Co-Authors Agung Sugeng Widodo Anshori, Mohammad Arif Nurudin Azam Muzakhim Imamuddin Azlan, Fachry Bashori, Muhammad Aziz Ching, Yuan Su Djarot B. Darmadi, Djarot B. Djoko Sutikno Fachrezi, M. Qashmal Fauzan, Arda Nur Iksandy, Jemmie Imammuddin, Azam Muzakhim Kosjoko Kosjoko Mario Sarisky Dwi Ellianto Nur Mohammad Arifin Oyong Novareza Purnomo Budi Santoso Putu Hadi Setyarini Rayyan, Rayyan Sari, Nurlia Pramita Sudjito Soeparman Wahyono Suprapto Winarno Yahdi Atmodjo