Article Per Year (5 Year)
p-Index From 2020 - 2025
1.116
P-Index
This Author published in this journals
All Journal World Chemical Engineering Journal Inovasi Fisika Indonesia (IFI) JURNAL PERMADI: PERANCANGAN, MANUFAKTUR, MATERIAL DAN ENERGI Logic : Jurnal Rancang Bangun Dan Teknologi Jurnal Mahasiswa Ilmu Komputer Greensusmater
Prasetya, Bayu
Unknown Affiliation
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics

Published : 7 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 7 Documents
Search

 1 
Sintesis kapsul mikro poli (urea-formaldehid) berisi minyak biji rami sebagai self-healing coating dengan variasi kecepatan agitasi Prasetya, Bayu
Jurnal Permadi : Perancangan, Manufaktur, Material dan Energi Vol 5 No 03 (2023): JURNAL PERMADI: PERANCANGAN, MANUFAKTUR, MATERIAL DAN ENERGI
Publisher : Universitas Nusa Putra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52005/permadi.v5i03.124

Abstract

Teknologi kapsul mikro untuk aplikasi smart material telah dikembangkan beberapa tahun terakhir. Salah satu material cerdas yang umum dikembangkan adalah lapisan self-healing. Kapsul mikro yang mengandung zat penyembuhan didispersikan ke dalam matriks polimer untuk membentuk komposit self-healing. Selain itu, kapsul mikro dapat dimasukkan ke dalam cat untuk aplikasi pelapisan. Ide utama pelapisan self-healing adalah merancang sistem self-healing yang cerdas dengan kemampuan perbaikan diri yang melekat. Banyak penelitian yang telah dilakukan mengusulkan beberapa mekanisme stimulus penyembuhan. Umumnya cangkang kapsul tersusun dari polimer organik, seperti urea-formaldehida, poliuretan, dan melamin formaldehida. Pada penelitian ini, kapsul mikro poli (urea-formaldehida) (PUF) yang mengandung minyak biji rami disintesis dengan metode polimerisasi in-situ. Kapsul mikro yang diperoleh dianalisis berdasarkan parameter kecepatan agitasi (400, 500, 600, 700, dan 800) rpm. Hasil penelitian menunjukkan bahwa kecepatan agitasi berbanding terbaling dengan diameter kapsul mikro.
Polylactic acid Synthesis via Direct Polycondensation Method Using Candida rugosa Lipase Catalyst Rahmayetty, Rahmayetty; Barleany, Dhena Ria; Suhendi, Endang; Prasetya, Bayu; Andiyani, Tuti
World Chemical Engineering Journal VOLUME 1 NO. 5 DECEMBER 2017
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v1i5.2621

Abstract

Polylactic acid (PLA) is a biodegradable, biocompatible polymer and is produced from renewable natural resources. PLA synthesis through a polycondensation mechanism generally uses a metal catalyst, such as Zn and Sn oxides. The disadvantages of using metal catalysts are the contamination of products produced by the metals used so that unsafe products are used for biomedical applications and food packaging. The purpose of this research is to synthesize the safe PLA used for food packaging and biomedical applications. Polycondensation is done by pretreatment of lactic acid at 120oC for 1 hour. Diluted lactic acid is mixed with Candida rugosa lipise catalyst with a certain concentration (1, 2, 3 and 4% w / w). The mixture was heated at certain temperature (60; 80; 100 and 120oC) and vacuum pressure of 0.1 bar for 72 hours. The highest viscosity and density of PLA in this study was produced at 100oC and using 3% Candida rugosa lipase. The highest viscosity and density of PLA were 2443,9 CSt and 1231,9 mg / l respectively. Candida rugosa lipase concentration does not affect PLA yield at constant polycondensation temperature. PLA yield is affected by temperature. PLA yields at 60, 80, 100 and 120 ° C are 97.98; 97,65; 96.78; 96.13% respectively. The molecule weight of PLA at temperature 100oC for 1436-1482. Lipase concentration does not affect the molecular weight of the PLA.
PEMBELAJARAN INTERAKTIF MELALUI GAME PENGETAHUAN UMUM DENGAN SCRATCH UNTUK MENGEMBANGKAN LITERASI PESERTA DIDIK SEKOLAH DASAR valentina, Mariana febri; Prasetya, Bayu; Mustika, Mustika
Jurnal Mahasiswa Ilmu Komputer Vol. 5 No. 2 (2024): Jurnal Mahasiswa Ilmu Komputer October 2024
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/ilmukomputer.v5i2.6247

Abstract

: (1) Penelitian ini bertujuan untuk mengembangkan dan menerapkan permainan edukasi berbasis Scratch, sebuah bahasa pemrograman visual, untuk meningkatkan literasi pengetahuan umum di kalangan siswa SD. Scratch menawarkan platform interaktif dan ramah pengguna yang mendorong kreativitas serta berpikir logis. Tujuan utama penelitian ini adalah menciptakan lingkungan belajar yang menarik yang memfasilitasi penguasaan keterampilan membaca, menulis, dan pemahaman materi. (2) Permainan ini mengintegrasikan berbagai aktivitas literasi seperti pembentukan kata, konstruksi kalimat, dan latihan pemahaman. Melalui serangkaian uji coba permainan yang melibatkan siswa sekolah dasar dan menengah pertama, permainan edukasi ini digunakan untuk melihat dampaknya terhadap keterampilan literasi siswa. (3) Hasil yang diperoleh menunjukkan peningkatan signifikan dalam kosakata dan pemahaman bacaan siswa. (4) Penelitian ini menyimpulkan bahwa permainan edukasi berbasis Scratch dapat menjadi alat yang berharga dalam kurikulum pendidikan, menawarkan pendekatan yang inovatif untuk pendidikan literasi yang menyenangkan dan efektif. Penelitian di masa depan dapat mengeksplorasi penerapan metode ini pada subjek dan konteks pendidikan lainnya.
Congo red dye adsorption using ZnAl layered double hydroxide fabricated using hydrothermal methods Fitri, Anisa; Lumbanraja, Febriwan Rizki; Hanifah, Istiara Rizqillah; Prasetya, Bayu; Aflaha, Rizky; Putra, Septia Eka Marsha
Greensusmater Vol. 1 No. 2 (2024)
Publisher : Green and Sustainable Materials Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62755/greensusmater.2024.1.2.44-50

Abstract

Industrial dye pollutants, particularly azo dyes like Congo red, pose significant environmental and health risks due to their toxic and non-biodegradable nature. This study assesses ZnAl Layered Double Hydroxide (ZnAl LDH) as an effective adsorbent, incorporating comprehensive materials characterization and adsorption isotherm analyses. Materials characterization using SEM and XRD confirmed the structural integrity and morphological suitability of ZnAl LDH for dye adsorption. Results demonstrated that ZnAl LDH, particularly the HMTA-based variant (h-ZnAl LDH), achieved superior adsorption capacities of up to 17.8 mg/g, significantly outperforming the urea-based (u-ZnAl LDH) with capacity of 12.3 mg/g. Kinetic analysis showed that the pseudo-second-order (PSO) model provided a better fit (R2 = 0.995) than the pseudo-first-order (PFO) model, indicating that chemisorption plays a dominant role in the adsorption mechanism. The adsorption process was also best described by the Langmuir isotherm model (R2 = 0.989), indicating monolayer adsorption on a homogeneous surface, while the Freundlich model (R2 = 0.944) also provided a reasonable fit, suggesting some degree of multilayer adsorption on heterogeneous surfaces. The superior performance of HMTA-based ZnAl LDH presents a significant advancement in wastewater treatment technologies
Mechanical Properties of Sugarcane Bagasse Fiber Composites: Epoxy vs Polyester Resin Matrices Prasetya, Bayu; Solafide Sipahutar, Wahyu; Andryan Prakoso, Ahmad; Fitri, Anisa
Jurnal Permadi : Perancangan, Manufaktur, Material dan Energi Vol 7 No 01 (2025): JURNAL PERMADI: PERANCANGAN, MANUFAKTUR, MATERIAL DAN ENERGI
Publisher : Universitas Nusa Putra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52005/permadi.v7i01.186

Abstract

This study aims to evaluate the mechanical properties of sugarcane bagasse bagasse fiber-reinforced composites using two types of matrix resins (i.e epoxy and polyester). The composites were fabricated using the hand lay-up method, with sugarcane bagasse bagasse fibers serving as the natural reinforcement. The tests conducted included visual fracture analysis, tensile testing, and flexural testing. The results showed that the epoxy-based composite achieved a tensile strength of 26.43 MPa, slightly higher than the polyester-based composite at 26.06 MPa. In the flexural test, the epoxy matrix composite exhibited a flexural strength of 89.53 MPa, significantly higher than the polyester matrix at 49.12 MPa. These findings indicate that the type of matrix resin has a significant influence on the mechanical performance of natural fiber composites, particularly in applications requiring high flexural strength.
The Effect of Volume Fraction Variation on The Mechanical Properties of Epoxy-based Sugarcane Fiber Composites Anisa Fitri; Prasetya, Bayu; Siregar, Muhammad Yasin; Prakoso, Ahmad Andryan; Sipahutar, Wahyu Solafide
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 25 No. 2 (2025): July
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31940/logic.v25i2.85-92

Abstract

The use of natural fibers as reinforcement in composite materials offers an environmentally friendly alternative to synthetic fibers. Among them, sugarcane fiber (bagasse), an agro-industrial byproduct rich in cellulose, hemicellulose, and lignin, holds considerable potential but remains underutilized. This study aims to evaluate the effect of varying sugarcane fiber volume fractions (50%, 60%, and 70%) on the mechanical properties of epoxy resin-based composites. The composites were fabricated using the hand lay-up method, followed by mechanical testing including tensile tests (ASTM D3039) and bending tests (ASTM D790). The results showed that the highest tensile strength of 26.43 MPa was achieved by the E70 sample, while the E50 sample exhibited the highest bending strength at 142.53 MPa. Fractographic analysis revealed that structural defects such as voids, fiber pull-out, and debonding significantly influenced the mechanical performance of the composites. While fiber volume fraction has a notable impact on tensile and bending strengths, the relationship is not strictly linear due to variations in fiber-resin distribution and interfacial bonding quality. These findings suggest that sugarcane fiber-based epoxy composites, particularly with a 50% volume fraction, have strong potential for application in lightweight structural components, furniture panels, or automotive interior parts. Future research may focus on improving interfacial bonding through chemical treatments or hybridization with other natural fibers to further enhance performance.
RANCANG BANGUN BIDAI ORTOPEDI PINTAR BERBASIS 3D PRINTING DENGAN WIRELESS REAL-TIME MICROCLIMATE MONITOR timur, fajar; Rizkiarna, Reffany Choiru; Wardhani, Primasari Cahya; Sujiwa, Akbar; Prasetya, Bayu
Inovasi Fisika Indonesia Vol. 14 No. 2 (2025): Vol 14 No 2
Publisher : Prodi Fisika FMIPA Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/ifi.v14n2.p216-223

Abstract

Abstrak Imobilisasi ortopedi merupakan bagian penting dalam proses penyembuhan patah tulang atau fraktur. Bidai merupakan alat yang digunakan untuk proses imobilisasi patah tulang atau fraktur dan umumnya berbahan dasar gips dan fiberglass. Bidai jenis ini sering menyebabkan komplikasi kulit akibat penumpukan panas dan kelembapan di bawah permukaan bidai. Kondisi mikroklimat dengan suhu dan kelembapan tinggi dapat memicu maserasi kulit, bau tidak sedap, dan infeksi sekunder yang memerlukan intervensi medis. Penelitian ini dilakukan dengan maksud mengembangkan prototipe bidai ortopedi biofungsional berbasis 3D Printing yang dilengkapi modul sensor suhu dan kelembapan yang ditransmisikan secara wireless.  Hasil pengujian menunjukkan bahwa prototipe bidai memiliki kekuatan tekan yang lebih tinggi dibandingkan bidai gips. Uji pemantauan waktu nyata selama dua jam dilakukan pada relawan sehat dengan suhu lingkungan 25 °C menunjukkan bahwa suhu internal bidai berada pada rentang 30–31,2 °C dan kelembapan relatif 64–66%, dengan deviasi ≤1,3% terhadap alat referensi dan nilai p > 0,05 untuk seluruh titik waktu. Fluktuasi suhu dan kelembapan yang diamati mencerminkan dinamika termal fisiologis dan efektivitas ventilasi pada struktur bidai. Prototipe bidai ini menunjukkan kemajuan penting dalam perawatan ortopedi dengan meningkatkan kenyamanan pasien patah tulang, mengurangi komplikasi kulit, dan mengintegrasikan rekayasa biomedik dengan teknologi kesehatan digital.   Abstract Orthopedic immobilization plays a critical role in the healing process of bone fractures. Casts are commonly used to immobilize fractured bones and are traditionally made from materials such as plaster of Paris or fiberglass. However, these conventional casts often cause skin-related complications due to the buildup of heat and moisture beneath the surface. An enclosed microclimate with elevated temperature and humidity can lead to skin maceration, unpleasant odor, and secondary infections that require clinical intervention. The present study aims to develop a biofunctional orthopedic cast prototype fabricated via 3D printing, equipped with embedded temperature and humidity sensors capable of wireless data transmission. Mechanical testing demonstrated that the 3D-printed cast exhibited higher compressive strength compared to traditional plaster-based casts. A two-hour real-time monitoring test was performed on a healthy volunteer in a controlled environment (25 °C). The internal microclimate within the cast ranged from 30 to 31.2 °C with a relative humidity of 64–66%, showing a deviation of no more than 1.3% compared to calibrated reference instruments (p > 0.05 for all time points). The observed fluctuations in temperature and humidity reflect the physiological thermal dynamics of the skin and the effectiveness of the lattice ventilation design. Overall, the developed prototype represents a notable advancement in orthopedic care by improving patient comfort, reducing the risk of skin complications, and integrating biomedical engineering with modern digital health technologies.
Co-Authors Aflaha, Rizky Akbar Sujiwa Andiyani, Tuti Andryan Prakoso, Ahmad Anisa Fitri Endang Suhendi, Endang Fitri, Anisa Hanifah, Istiara Rizqillah Lumbanraja, Febriwan Rizki Muhammad Yasin Siregar Mustika Mustika Prakoso, Ahmad Andryan Rahmayetty, Rahmayetty Rizkiarna, Reffany Choiru Septia Eka Marsha Putra Sipahutar, Wahyu Solafide Solafide Sipahutar, Wahyu timur, fajar valentina, Mariana febri