Article Per Year (5 Year)
p-Index From 2021 - 2026
2.024
P-Index
This Author published in this journals
All Journal International Journal of Power Electronics and Drive Systems (IJPEDS) Jurnal Teknik Mesin Jurnal Sains dan Teknologi Jurnal Teknik Mesin Jurnal technoscientia Media Mesin: Majalah Teknik Mesin UNEJ e-Proceeding Majamecha JURNAL TEKNOLOGI TECHNOSCIENTIA Jurnal Teknik Mesin Jurnal Pengabdian Multidisiplin Indonesian Community Journal Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII
Ratna Kartikasari
Institut Teknologi Nasional Yogyakarta, Indonesia
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Social Sciences Transportation Other

Published : 24 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search
Journal : Jurnal technoscientia

 1 
PENGARUH TEMPERATUR TEMPER TERHADAP SIFAT MEKANIK DAN KETAHANAN KOROSI PADUAN Fe-1,52Al-1,44C Kartikasari, Ratna
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 2 No 1 Agustus 2009
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (659.701 KB) | DOI: 10.34151/technoscientia.v2i1.417

Abstract

On the basis of economic and lower density considerations, Fe-Al-C alloy could be a good candidate for replacing some of the conventional stainless steel. Wherein, Al is used to replace the expensive alloy element in conventional Fe-Cr-C system. The aim of the research is to investigate tempering temperature influence to mechanical properties and corrosion resistance of Fe-1,52Al-1,44C in the 3.5% NaCl solution. Fifty kilograms of Fe-Al-C were prepared from mild steel scrap, high purity aluminium, and Fe-C. The alloy was prepared in a high frequency induction furnace with alloying was done in the ladle. Optical microstructure, mechanical properties and corrosion rate were examined. The corrosion rate, were carried out with immersion methode in 3.5% NaCl. The optical micrograph shows that as cast Fe-1,52Al-1,44C alloy has ferrite and pearlite microstructure and has tendency to become ferritic microstructure with encreasing tempering temperature. Maximun tensile strength and maximum hardness took placed after hardening that was respectively 74,44kg/mm2 and 298,7 VHN. Maximum elongation was reached at 450oC tempering temperature. The result of corrosion testing showed that the alloy has decreasing corrosion rate with the increasing tempering temperature.
ANALISIS KERUSAKAN POROS BRINE INJECTION PUMP Kartikasari, Ratna; -, Antony
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 7 No 1 Agustus 2014
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (519.205 KB) | DOI: 10.34151/technoscientia.v7i1.610

Abstract

PT. Geo Dipa Energy Dieng unit is one form of industry exploiting geothermal steam(vapor) that uses abrine injection pump. Brine injection pump is a pump for injecting brine into injection wells. Pump using the VC type is the type of pump that has suction and discharge nozzle shead. The problems that always arise in the operation of the brine injection pump shaft is break age of component smade ​​of stainless steel SS420 in are latively short time. This study aims to determine the cause of brine injection pump shaft break age in avery short time.Stages of an alysis performe distesting the chemical composition using spectrometry and EDAX, macrophotoonfracturesurfaces, and microphoto on the area closest to the fracture surface using The results showed that the initial damage occurs precisely in the initial crack. Further more,the crack propagation occurs according to the loading pattern until the ductilet earing occurs before fracture. Generally, the pattern of fracture indicate sinter-crystalline pattern at the beginning of the trans-crystalline cracks and any subsequent stages until fracture occurs. SEMindicate the presence of Cr carbides with elongated patterns that indicatethe cause of fracture. This causes the carbide concentration are as vulnerable tocorrosiveenvironments, so that when the Cl-ions contained in the brine contactaggressively in this area then began collaborating between corrosion and dynamic load causes the initial crack and followed bycrack propagation that very fast into the brittle fracture pattern.
Co-Authors -, Antony -, Antony Achmad Supiani Achmad Supiani Achmad Supiani Adesty Suhandhia Putra, Muhammad Eki Agus Jayatun, Yohanes Angelio Fila Delfianto Maitano Anita Susiana Anshory, Shodiq Daru Sugati Feri Frandika Jeremia Yakin Berkat Zandroto Joko Pitoyo Kadiman, Sugiarto Khairul Mahbubi M. Noer Ilman Muhammad Oky Sadewa Mus ta kim Mustakim Mustakim Mustakim Oktavianus, Yosep Oni Yuliani R. Soekrisno Sely Novita Sari Solikhah Retno Hidayati Subardi Subardi Subardi Sutrisna Sutrisna Suyitno Suyitno Teddy Marvin Silalahi Wartono Wartono Yulius Wijanarko