Article Per Year (5 Year)
p-Index From 2020 - 2025
0.61
P-Index
This Author published in this journals
All Journal Rekayasa Mesin INTEK: Jurnal Penelitian
Lobo, Osmar Buntu
Unknown Affiliation
Computer Science & IT Engineering Mechanical Engineering

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Tegangan Ambang pada Sambungan Las CDW antara Baja dan Kuningan dalam Lingkungan Korosif Lobo, Osmar Buntu; Darmadi, Djarot Bangun; Novareza, Oyong
Jurnal Rekayasa Mesin Vol 11, No 1 (2020)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2020.011.01.15

Abstract

Failure at the welded joint can be occurs due to the Stress Corrosion Cracking (SCC) phenomenon. Dissimilar welding is more susceptible to SCC when compared to similar welding. This can be occurs because the material or metal that connected is non-homogeneous material. which causes the material will be difficult to be combined perfectly. This study aims to determine the threshold stress (σTh) at the dissimilar welded joint between steel and brass which have SCC loads. Both materials were connected by the welding method by using a Capacitive Discharge Welding (CDW) welding machine. Surface preparation or surface treatment is applied to one of the basic materials (low carbon steel) to obtain optimal joint results. The welded joint was tested by using Constant Load Test (CLT) methods, which is engineered in such a way that the welded joint get the stress,  corrosive environment (1M NHO3 solutions) and voids produced by the weld joint itself. The result shows that the threshold stress of the dissimilar welding joint between steel and brass by the CDW method is 330 MPa.
Performance Test Of Myristica Fragrans Dryer Using A Heat System On An Electric Stove Hardinsi, Festo Andre; Subhan, Muh.; Lobo, Osmar Buntu
INTEK: Jurnal Penelitian Vol 10 No 2 (2023): October 2023
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/intek.v10i2.4482

Abstract

Fakfak Regency is one of the regencies of West Papua province located in Indonesia. Fakfak Regency is also known as an abundant producer of myristica fragrans and seeds so that Fakfak City is often dubbed as the city of myristica fragrans. However, there is a problem that often occurs in myristica fragrans farmers, namely the occurrence of aflatoxin attacks.  One way to deal with aflatoxin attacks caused by fungi and Aspergillus flavus is to dry myristica fragrans seeds.  The goal to be achieved in this study is to determine the relationship between the drying time of myristica fragrans seeds with the amount of moisture content using a blower on an electric stove. As well as to find out the analysis of moisture content tests based on SNI standards from the results of drying myristica fragrans seeds using a blower on an electric stove. The method used in this study is the design of a myristica fragrans seed dryer using an electric stove. This design uses an electric stove as a drying heat source and uses a blower to suck the heat temperature from the electric stove. The results of this study are The relationship between drying time and moisture content in myristica fragrans drying equipment using an electric stove is y = -3.2034x + 44.795 with R2 = 0.9463. Based on SNI standard 01-0006-1993, the appropriate moisture content value in a myristica fragrans seed dryer using an electric stove is, within 10 hours a moisture content value of 9.77% is obtained and within 13 hours a moisture content value of 6.28% is obtained
Co-Authors Darmadi, Djarot Bangun Hardinsi, Festo Andre Oyong Novareza Subhan, Muh.