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All Journal Buletin Udayana Mengabdi Jurnal Ergonomi Indonesia (The Indonesian Journal of Ergonomic) INDONESIAN JOURNAL OF BIOMEDICAL SCIENCES Jurnal Energi Dan Manufaktur Jurnal METTEK (Jurnal Ilmiah Nasional Dalam Bidang Ilmu Teknik Mesin) Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri International Journal of Engineering and Emerging Technology Advances in Tropical Biodiversity and Environmental Sciences Journal of a Sustainable Global South Jurnal Manajemen Widya Amerta Journal Physical Therapy UNISA
I Wayan Surata
Program Studi Teknik Mesin Universitas Udayana
Agriculture, Biological Sciences & Forestry Arts Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Mechanical Engineering Medicine & Pharmacology Public Health Social Sciences Veterinary

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Journal : International Journal of Engineering and Emerging Technology

 1 
Surface Modification of Microfiltration Polypropylene Membrane for Molecular Air Filtration A.A.I.A.S Komaladewi; PTP Aryanti; I D G Ary Subagia; I W Surata; I G Wenten
International Journal of Engineering and Emerging Technology Vol 4 No 1 (2019): January - June
Publisher : Doctorate Program of Engineering Science, Faculty of Engineering, Udayana University

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Abstract

Microfiltration polypropylene (MPP) membrane has increasingly been used in separation processes due to its good chemical and mechanical stability, high selectivity to submicron particles, and low cost. In this paper, the MPP membrane was modified by coating the surface with a composite polysulfone (PSf)/PEG400/ZnO layer. Then, the modified MPP membrane was used for fine particle removal from air. Performance of modified MPP membrane as a function of polymer and ZnO nanoparticles (ZnO-NPs) concentration in coating solution, and coating time, was investigated. The SEM image showed that the presence of ZnO-NPs in polymer solution generated macrovoids in the coating layer. Permeate flux decreased with increasing polymer and ZnO-NPs concentration, but the flux increased with increasing coating time. Meanwhile, fine particle removal efficiency increased with the increase of operating pressure. A stable air flux of 19 L m-2 h-1 was obtained at ZnO-NPs concentration of 3 wt.%. The removal efficiency of PM1, PM2.5, and PM10 at operating pressure of 2 bar were 70%, 74%, and 70%, respectively.
EFFECT OF ALKALI TREATMENT ON THE TENSILE STRENGTH OF LIDAH MERTUA FIBER/ POLYPROPYLENE RECYCLED BIOCOMPOSITE I Putu Lokantara; NPG Suardana; IW Surata; INS Winaya
International Journal of Engineering and Emerging Technology Vol 4 No 2 (2019): July - December
Publisher : Doctorate Program of Engineering Science, Faculty of Engineering, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/IJEET.2019.v04.i02.p09

Abstract

The purpose of this study was to determine the effect of alkali fiber treatment on the tensile strength of composites. The material in this study was recycled polypropylene from plastic beverage glass and lidah mertua fiber with a fiber length of 180 mm, fiber treatment using 5% NaOH and without treatment. Composite specimens were prepared using the hot press method at 170oC for 120 minutes. Tensile testing with the dimensions of the test specimen refers to ASTM D-638. The results of the test carried out the maximum tensile strength value of 71,606 MPa in fiber with 5% alkali treatment. The tensile strength of composites with alkali treatment increased 223% compared to the tensile strength without alkali
Hardness Characteristics of Hybrid Composite Brake Lining on Olie's Absorption Media I Ketut Adi Atmika; IDG. Ary Subagia; I Wayan Surata; I Nyoman Sutantra
International Journal of Engineering and Emerging Technology Vol 4 No 1 (2019): January - June
Publisher : Doctorate Program of Engineering Science, Faculty of Engineering, Udayana University

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Abstract

Brake lining technology is developing rapidly to adjust the absorption media in which the vehicle's braking system is operating. Material commonly used as a brake lining is asbestos and its alloys, but this material is very dangerous to the environment and health. This research was developed to overcome these problems, namely finding alternative brake lining pads material that has good mechanical and physical properties. Brake lining material is made from a hybrid composite reinforced basalt, shellfish, alumina, and phenolic resin (PR-51510i) as a binding matrix. This brake lining material is produced through a process of sintering at a temperature of 150 ° C with a load of 2000 kg for 30 minutes. These hybrid composites are made in as many as three variations, each of which is tested for olie absorption at several variations of immersion time. Immersion 3 days hardness of hybrid composite and asbestos brake lining material is still quite high between 24-28 HVN. The highest hardness at that time was an H1 specimen of 28.00 HVN. Then the hardness of the brake lining material decreases with the addition of immersion time and is close to stable at the
Co-Authors A. Manuaba Ade Putra Arimbawa Ade Sri Mariawati Anak Agung Istri Agung Sri Komaladewi Astawa, I Wayan D. N. K. P. Negara D.P. Sutjana Dewa Ngakan Ketut Putra Negara I Dewa Putu Sutjana I G Wenten I Gusti Agung Kade Suriadi I Ketut Adi Atmika I MADE MULIARTA . I Nengah Suarnadwipa I Nyoman Adi Putra I Nyoman Suprapta Winaya I Nyoman Sutantra I Putu Gede Adiatmika I Wayan Putra Adanyana I. K. A. Atmika I.B.P Adnyana I.D.G.P. Swastika I.D.N.P. Swastika I.K.A Atmika I.P.A. Astawa Indrasuari, A.A Istri Diah Ketut Tirtayasa Komang Metty Trisna Negara Luh Made Indah Sri Handari Adiputra Luh Putu Ratna Sundari M Sucipta Made Sucipta N. Adiputra Ni Luh Made Reny Wahyu Sari Ni Putu Ariesta Budiani NPG Suardana Nyoman Adiputra Palilingan, Richard Andreas PTP Aryanti Putu Lokantara R. Antara Rina Mayangsari Siti Helmyati Swarmadika, Ida Bagus Alit Tjok Gde Tirta Nindha Tjokorda Gde Tirta Nindhia Tjokorda Sari Nindhia Tomáš Ruml Weda Subawa, I Gede Putu Y.P Sudarmojo Zdenek Knejzlík