Article Per Year (5 Year)
p-Index From 2020 - 2025
0.983
P-Index
This Author published in this journals
All Journal Rekayasa Mesin Jurnal Rekayasa Mesin G-Tech : Jurnal Teknologi Terapan Journal of Engineering and Applied Technology Eksergi: Jurnal Teknik Energi
Sari, Nurlia Pramita
Unknown Affiliation
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Energy Engineering Mechanical Engineering

Published : 6 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 6 Documents
Search

 1 
Boron Doped Graphene 3-Dimensi untuk Superkapasitor Kapasitas Tinggi Sari, Nurlia Pramita; Sonief, Achmad As'ad; Ching, Yuan Su
Rekayasa Mesin Vol 8, No 2 (2017)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (433.154 KB) | DOI: 10.21776/ub.jrm.2017.008.02.1

Abstract

Chemical doping is an effective approach to improve the property of carbon material. In this study boron doped graphene with 3D structure used as the electrode was investigated. Boron doped graphene was prepared through freeze-dried process followed by pyrolysis of graphene oxide (GO) with three types of chemical substances; boron oxide, boric acid, and boron powder in an argon and hydrogen atmosphere at 1000 C for 3 hours. The difference of chemical composition generated a different percentage of boron bond with GO. The results shows that the highest electrochemical performance was found in graphene samples with the addition of boric acid (BA) 86 F/g, followed by boron oxide (BO) 59.2 F/g, and boron powder (BP) 2 F/g. It can be caused by boron concentration bound with graphene. The higher concentration of boron could be increased the electrochemical performance due to better of ion movement.
The effect of heating temperature on 3D print filament diameter consistency produced by HDPE and LDPE plastic extrusion machine Rijekki, Nanda Fajar; Sari, Nurlia Pramita; Faizin, Akhmad; Rosady, Siti Duratun Nasiqiati
Journal of Engineering and Applied Technology Vol 5, No 2 (2024): (August)
Publisher : Faculty of Engineering, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jeatech.v5i2.76071

Abstract

3D printing technology is rapidly growing in the industrial world, especially with the Fused Deposition Modeling (FDM) method that uses thermoplastic filament filaments. The manufacture of these filaments requires extrusion machines and plastic seeds, with filament diameter as the main indicator of 3D Print quality. This study aims to analyze the effect of variations in heating temperature on the consistency of the diameter of the results of extrusion machines for High Density Polyethylene (HDPE) plastics at temperatures of 160°C, 180°C, 200°C, 220°C, and 240°C and Low Density Polyethylene (LDPE) at temperatures of 160°C, 170°C, 180°C, 190°C, and 200°C. Each temperature variation has six filament samples, with the diameter measured every 1 cm for five measurements using a screw micrometer, resulting in 30 data per temperature variation. The data is processed using Statistical Process Control (SPC) and Capability Process methods. Based on data analysis with control chat, it can be concluded that each temperature variation produces diameters that are within the control limits, allowing capability process testing. Process Capability has been conditioned, resulting in large process variations compared to the established specification range, indicating imbalances and inconsistencies in filament production so that filament diameters are often out of specification limits. The conclusion of this analysis is that temperature variation has a significant effect on the consistency of filament diameter resulting from extrusion machines with HDPE and LDPE plastic seed materials. In addition, based on variations in temperature data that produce the best filaments, the temperature is 220°C for HDPE plastic and 190°C for LDPE plastic.
Analisis Pengembangan Produk Mesin Pengiris Keripik Pisang dengan Metode Quality Function Deployment (QFD) Pratama, Rico Wahyu; Muzaki, Mochamad; Sari, Nurlia Pramita; Firmansyah, Hilmi Iman; Takwim, R.N. Akhsanu
Jurnal Rekayasa Mesin Vol 19, No 2 (2024): Volume 19, Nomor 2, Agustus 2024
Publisher : Mechanical Engineering Department - Semarang State Polytechnic

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jrm.v19i2.4672

Abstract

Wilayah Kabupaten Malang merupakan dataran tinggi yang dikelilingi oleh beberapa gunung pada ketinggian 250-500 meter di atas permukaan air laut. Adapun salah satu produk olahan yang paling populer di daerah tersebut adalah keripik pisang. Pembuatan keripik pisang melaui beberapa tahapan diantaranya pengupasan kulit, pengirisan, penggorengan dan pemberian bumbu. Diantara beberapa tahapan ini proses pegirisan membutuhkan waktu yang cukup lama dibandingkan proses yang lain. Permasalahan yang terjadi pada customer adalah hasil dari irisan  kotor karena disebabkan getah dari buah pisang yang menempel pada pisau pengiris, dan kapasitas produksi masih terbatas. Mesin perajang yang pernah digunakan masih kurang aman, kapasitas terbatas dan membutuhkan daya listrik yang cukup tinggi. Sedangkan alat perajang manual yang digunakan saat ini juga mempunyai beberapa kekurangan diantaranya sering melukai tangan, hasil dari ketebalan rajangan tidak konsisten, kurang sempurna dan kapasitas produksi masih terbatas. Sehingga perlu adanya penelitian dengan tujuan untuk mengembangkan mesin pengiris keripik pisang yang sudah ada sesuai dengan kebutuhan produsesn keripik pisang. Penelitian ini bertujuan mengembangkan mesin pengiris keripik pisang dengan metode Quality Function Deployment. Dalam pengaplikasian QFD kebutuhan dan keinginan konsumen atau sering disebut  Voice of Customer (VoC) dipetakan dalam alat yang bernama  House of Quality (HoQ). Setelah dilakukan interview kemudian pembentukan desain matriks pada model HoQ, ditemukan bahwa produsen keripik buah apel mengingiinkan perajang yang mampu menhasilkan tebal rajangan 1,5 - 3mm dengan kualitas dan performa yang lebih baik dibandingkan alat yang sudah ada. Kemudian hasil benchmarking menunjukkan produk yang dikembangkan memiliki keunggulan yang lebih baik dibandingkan produk yang sudah ada.Setelah dilakukan pengolahan data maka dapat disimpulkan bahwaterpilih konsep dengan kombinasi putaran rpm diatur menggunakan dimmer, ketebalan rajangan diatur dengan baut tekan, tuas pengarah menggunakan pegas tarik dan model mesin tipe vertikal.
Design and Manufacture of Speedometer Covers using the House of Quality (HOQ) Approach Faizal, Elka; Sari, Nurlia Pramita; Wicaksono, Hangga; Pranoto, Bayu; Supriyanto, Nicky Suwandhy Widhi; Subagiyo, Subagiyo
G-Tech: Jurnal Teknologi Terapan Vol 9 No 3 (2025): G-Tech, Vol. 9 No. 3 July 2025
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/g-tech.v9i3.7119

Abstract

This study aims to design and fabricate a speedometer cover for Yamaha Aerox and N-Max 155 motorcycles using 3D printing technology, guided by the House of Quality (HOQ) framework. The increasing consumer demand for motorcycle accessories motivated this research. A structured design process was implemented, beginning with a consumer needs analysis conducted through questionnaires and surveys to identify user expectations. These needs were systematically translated into technical requirements using the HOQ method. The design stage utilized 3D CAD modeling and 3D scanning to ensure accurate fitting to the speedometer unit, followed by prototyping using fused deposition modeling (FDM) 3D printing. The final prototype exhibited key consumer-desired attributes such as heat resistance, structural durability, and a secure fit. Results indicate that integrating the HOQ approach with digital fabrication methods effectively aligns product design with user expectations. This study demonstrates the potential for further development of customizable motorcycle accessories using a consumer-driven and technology-supported design process.
Improving the Hardness of 3D Printable ABS Filament Through Thermal and Cooling Process Control Sari, Nurlia Pramita; Faizin, Akhmad; Pranoto, Bayu; Muzaki, Mochamad; Maulana, Firza Nurdin
G-Tech: Jurnal Teknologi Terapan Vol 9 No 4 (2025): G-Tech, Vol. 9 No. 4 October 2025
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/g-tech.v9i4.7838

Abstract

The properties of filament are widely recognized as critical factors influencing the performance of fused filament fabrication (FFF) in 3D printing. Acrylonitrile Butadiene Styrene (ABS) is frequently utilized in this process due to its high strength, durability, and availability. Nevertheless, the characteristics of the filament are highly dependent on processing parameters, particularly extrusion temperature and cooling method, which directly affect its mechanical behavior and dimensional stability. The objective of this study was to evaluate the effect of extrusion temperature and cooling medium on the hardness of ABS filaments produced using a single-screw plastic extruder. Experimental procedures were performed at three extrusion temperatures, namely 180 °C, 200 °C, and 220 °C, with cooling applied by water immersion and by air using a blower. The results demonstrated that air cooling produced superior hardness values and more consistent dimensional stability compared to water cooling. The optimum condition was observed at an extrusion temperature of 180 °C under air cooling, which resulted in the highest hardness values along the filament length (95.63HA  average). These findings suggest that careful optimization of extrusion parameters, particularly the selection of an appropriate cooling method, is essential to improve filament quality for additive manufacturing applications.
OPTIMASI AERODINAMIKA BODI MOBIL HEMAT ENERGI KEN DEDES ELECTRIC EVO 3 MENGGUNAKAN METODE COMPUTATIONAL FLUID DYNAMICS (CFD) Fakhruddin, Muhammad; Wicaksono, Hangga; Baananto, Fauzan; Firmansyah, Hilmi Iman; Sari, Nurlia Pramita; Muzaki, Mochamad; Akbarsyah D, Khelvindra Rizky; Hardyanto, Noveri Dwi
Eksergi Vol. 17 No. 1 (2021): JANUARI 2021
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (747.999 KB) | DOI: 10.32497/eksergi.v17i1.2219

Abstract

Aerodynamics is a branch of science that discusses the movement of an object in the air. Aerodynamics comes from the words aero = air and dynamics = force of motion. The study of air forces is a branch of fluid mechanics. This study is a continuation of the study of hydrodynamics, where the science of the motion of air has a close relationship with other sciences. Physics, mathematics, mechanics, meteorology and others are branches of science that are closely related to aerodynamics. Where in the science of aerodynamics, it discusses the principle of stationary air, specifically about the changes experienced by the air when there is a change in geometry. In this study, CFD analysis was carried out to inspect and optimize the airflow through the energy-efficient car body "Ken dedes Evo 3" Malang State Polytechnic to participate in energy-efficient car competitions by following the regulations and packaging requirements in energy-efficient car contests. The aerodynamic analysis of the energy-efficient car was carried out using the ANSYS simulation software. This aerodynamic research aims to reduce the drag coefficient and lift coefficient of energy-efficient cars. In the end, the energy-efficient car Ken Dedes Electric Evo 3 has an improved drag coefficient of 0.03 and a lift coefficient of 0.034. This is obtained from the simulation only on the car body.
Co-Authors Akbarsyah D, Khelvindra Rizky Akhmad Faizin Ching, Yuan Su Faizal, Elka Fauzan Baananto Hardyanto, Noveri Dwi Hilmi Iman Firmansyah Maulana, Firza Nurdin Muhammad Fakhruddin Muzaki, Mochamad Nicky Suwandhy Widhi Supriyanto Pranoto, Bayu Pratama, Rico Wahyu R.N. Akhsanu Takwim, R.N. Akhsanu Rijekki, Nanda Fajar Siti Duratun Nasiqiati Rosady Sonief, Achmad As'ad Subagiyo Subagiyo Wicaksono, Hangga