Article Per Year (5 Year)
p-Index From 2020 - 2025
3.128
P-Index
This Author published in this journals
All Journal Serupa : The Journal of Art Education Jurnal Pelita Pendidikan Journal of Politic and Government Studies Jurnal Teknik Mesin E-Bisnis : Jurnal Ilmiah Ekonomi dan Bisnis CHEMPUBLISH JOURNAL Jurnal Ilmiah Mahasiswa Pendidikan Guru Sekolah Dasar Jurnal Basicedu Didaktik : Jurnal Ilmiah PGSD STKIP Subang Jurnal Ilmiah ASET ARBITRASE: JOURNAL OF ECONOMICS AND ACCOUNTING Jurnal Teknik Mesin International Journal of Social Science, Educational, Economics, Agriculture Research, and Technology (IJSET) Jurnal Ekonomi, Manajemen, Bisnis dan Akuntansi (JEMBA) MAHADAYA Jurnal Bahasa, Sastra, dan Budaya Jurnal Basicedu Jurnal Akuntansi, Perpajakan dan Auditing Jurnal Intelek Insan Cendikia
Putri Pratiwi
Unknown Affiliation
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Social Sciences Other

Published : 21 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 4 Documents
Search
Journal : Jurnal Teknik Mesin

 1 
Design of a Semi-Inverse Taper Horizontal Blade Wind Turbine and Its Potential use at Gajah Beach Padang Putri Pratiwi; Frizky Yurian
Jurnal Teknik Mesin Vol 11 No 1 (2021): Jurnal Teknik Mesin Vol.11 No.1 April 2021
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (975.621 KB) | DOI: 10.21063/jtm.2021.v11.i1.74-79

Abstract

The development of the use of wind energy to produce electrical is still quite attractive, especially in developing country such as Indonesia. Padang City is an area located on the west coast of Indonesia and is influenced by west, southwest, northwest winds with low wind with speeds ranging from 2 m/s to 10 m/s. The purpose of this research is to design a blade that can rotate in that speed range. The blade designed is a semi-inverse taper with a chord ratio of 1:1,3, the length of the blade is 90 cm. The design showed that the highest peak was found at 51% at TSR 4.5. Assuming a maximum generator speed of 500 rpm and the range of wind speeds from 1 m/s to 12 m/s, it is known that the blades begin to rotate at 2.1 m/s, the maximum power is 1324 Watts when the wind speed is 12 m/s
Production Process of Steam Power Plant and Calculation of Thermal Efficiency: Case Study of Teluk Sirih Steam Power Plant Putri Pratiwi; Zakil Hadi
Jurnal Teknik Mesin Vol 12 No 1 (2022): Jurnal Teknik Mesin Vol.12 No.1 April 2022
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2022.v12.i1.26-31

Abstract

The performance of a power plant can be known from the calculation of efficiency in the generating sector. Steam power plants utilize a series of energy conversion processes including: conversion of chemical energy into thermal energy when extracting heat from coal as fuel to heat boilers, conversion of thermal energy into mechanical energy in turbines and conversion of mechanical energy into electrical energy in generators. Like other steam power plants, the Teluk Sirih PLTU located in Bungus Teluk Kabung, West Sumatra has the same energy production process. it's just that the source of the water is taken from the sea so it requires special treatment to turn the water into water suitable for producing steam used in this power plant. The electricity production process will be explained in this study and an efficiency calculation process with a simple Rankine cycle is carried out to determine the efficiency of this power plant. From the calculation results, the thermal efficiency of PLTU Teluk Sirih is 29%. Based on the results of these calculations, it is known that the Telusk Sirih PLTU can be classified as a power plant with good efficiency.
Measurement of the sound absorption coefficient of palm frond fiber composites with synthetic adhesives Putri Pratiwi; Abdul Rahman; Asmara Yanto
Jurnal Teknik Mesin Vol 12 No 2 (2022): Jurnal Teknik Mesin Vol.12 No.2 October 2022
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2022.v12.i2.131-137

Abstract

Natural fiber composite materials have been widely applied for various purposes, one of which is reducing noise. Many efforts have been tried to reduce noise by using sound absorbing materials such as glasswool, rockwool, and gypsum as sound absorbers, but because of the high price and bad impact on health, many studies have been conducted to find materials that are practical, cheap, and abundant availability in nature, one of which is natural fiber as an alternative to commercial sound absorbing materials. In this study, we want to know the effect of the composition of palm fronds with polyester resin can affect the sound absorption of a material and the effect of composition on sound absorption. The composition of palm frond fiber and polyester resin was varied 60%:40%, 65%:35%, 70%:30%, 75%:25%, 80%:20%, 85%:15%, 90%:10%, arranged randomly with a length of 5 mm. The specimen synthesis process starts with cutting the palm fronds, decomposing the palm frond fibers so that the fibers are separated from the flesh. Acoustic testing was conducted using a single microphone impedance tube. The test results showed that the largest absorption coefficient value is 0.984 at a frequency of 1500 Hz and is obtained in materials with a composition of 70%: 30%, and for the largest acoustic impendance value is 1.714 which is found at a frequency of 500 Hz and is obtained in the composition of 85%: 15%.
Characterization of Sound Absorption Coefficient and Acoustic Impedance of Palm Frond Fiber Composites with Pine Resin on Various Composition Variations Putri Pratiwi; Asmara Yanto
Jurnal Teknik Mesin Vol 13 No 1 (2023): Jurnal Teknik Mesin Vol.13 No.1 April 2023
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2023.v13.i1.6-12

Abstract

This research aims to investigate the ability of sound absorption coefficient and the acoustic impedance of Palm Frond Fiber Composites using the one-microphone impedance tube method. We used Palm Frond Fibers as a filler and pine resin as an alternative adhesive of composite with a volume fraction of 50%: 50%, 60%: 40%, 70%: 30%, 80%: 20%, and 90%: 10%. The sound absorption coefficient and acoustic impedance of composites were studied at 500, 1000 Hz, 1500 Hz, 2000 Hz, and 2500 Hz frequency. The results showed that the highest sound absorption coefficient was found in 1500 Hz frequency and using volume fraction 70%:10%. The highest acoustic impedance response was found in composite with a fiber composition of 90% and at the test frequency with a range of 500 Hz -1500 Hz. The composition of the adhesive and fiber greatly affects the impedance value because it was related to the formation of pores in the composite. Based on ISO standard 11654:1997, the value of the sound absorption of sound waves was 0.15, and Palm Frond Fiber had a value above, so it had the potential used as sound absorption material.
Co-Authors Abdul Rahman Adha Aulia Alfiati Syafrina Aprih Santoso Armansyah Armansyah Asmara Yanto Betti Leindarita Citra Rizkiana Cut Millisa Dina Aulia Elida Hafni Siregar Fachrunnisa Ernanda Manurung Fadillah Fauziah Putri Frizky Yurian Hamna, Hamna I Gusti Ketut Agung Ulupui Indah Muliasari Israwati Israwati. Jovan Morientes Nigel Manihuruk Latrey, Nabila R. Lili Andriani Mastariyanto Perdana Meisya Audreyanna Azzahra Motoh, Theopilus C Rozi Saferi Santi Perawati Setiana, Soni Mulyawan Silvia Fardila Soliha Suryawardana, Edy Ummah BK, Muh. Khaerul Veithzal Rivai Zainal Wiwik W Yosi Evelyn Tondang Yusron Wikarya Yuwanto . Zakil Hadi