Article Per Year (5 Year)
p-Index From 2020 - 2025
0.408
P-Index
This Author published in this journals
All Journal Dinamika Teknik Mesin : Jurnal Keilmuan dan Terapan Teknik Mesin
S. Sinarep, S.
Unknown Affiliation
Aerospace Engineering Automotive Engineering Mechanical Engineering Physics

Published : 13 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 13 Documents
Search

 1   2 
ANALISA KEKUATAN BENDING KOMPOSIT EPOXY DENGAN PENGUATAN SERAT NILON Sari, Nasmi Herlina; Sinarep, S.
Dinamika Teknik Mesin Vol 1, No 1 (2011): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The development of composite materials in the field of engineering is increasingly being used. This is because of its properties are superior compared to conventional materials, as the ratio between strength and density are quite high, stiff, the manufacturing process is very simple and resistant to corrosion and fatigue loads. The purpose of this study was to determine the effect the addition of nylon fibers with Epoxy Matrix on the increase in bending strength of epoxy composites.  The objected of this study was the composite of nylon fiber, which is cut 12 mm nylon fiber with epoxy resin as a fastening material. Before performing an experiment testing the tensile fibers has done and known to the stress of 461.22 MPa. There are 3 variations of volume fraction In this experiment, those are volume fraction of 40%, 50%  and  60%, with 3 variation each.  Method in the manufacture of specimens with the way the mould press. Tools to test the specimen is bending test machine (servopulser). Specimens using a standard test of ASTM C 393-94. Bending test results showed that the nylon fiber composite with fiber volume fraction 40% stress of 787.16 MPa, modulus of elasticity of 1.06 GPa, volume fraction of 50% the stress of 902.01 MPa, modulus of elasticity of 1.08 GPa, and for 60% volume fraction of the stress of 950.02 MPa, modulus of elasticity of 0.99 GPa.
Karakterisasi polyester komposit berpenguat serat pohon pisang saba dengan filler carboxyl terminated butadiene acrylonitryle sebagai material bumper otomotif Sujita, S.; Sulistyowati, E. D.; Zainuri, A.; Sinarep, S.; Pandiatmi, P.
Dinamika Teknik Mesin Vol 12, No 2 (2022): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v12i2.525

Abstract

The bumper is one part of the vehicle that has a very important role. In addition to functioning as aerodynamics and aesthetics to attract consumers, the bumper also functions as a damper and a buffer against impact (shock/impact force) in the event of an accident. Therefore, the material used as the bumper, especially the rear bumper, is often damaged, so a material that has good tensile strength and impact toughness is needed. In this research, the object of the research is the polyester matrix composite. The research aspect is more emphasized on the effect of using Musa acuminata stem fiber (MASF) as a reinforcement and filler of Carboxyl Terminated Butadiene Acrylonitryle (CTBN) on changes in tensile strength and impact toughness. The results of the study show. the addition of MASF volume fraction and CTBN filler increased the tensile strain, impact toughness, impact energy, but decreased the tensile strength of the polyester matrix composite material. The change in mechanical properties is due to the bonding of MASF with CTBN and polyester with CTBN, so that the impact toughness and ductility of the specimen increases, because CTBN is elastic.
REDAMAN SUARA PADA KOMPOSIT SANDWICH POLYESTER BERPENGUAT SERAT SISAL DENGAN CORE STYROFOAM sinarep, S.; Catur, Agus Dwi; Hafidzul, M.
Dinamika Teknik Mesin Vol 4, No 1 (2014): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Penggunaan serat alam pada kulit komposit sandwich dalam  sekat bangunan perlu diteliti kemampuannya untuk menyerap energi suara pada beberapa frekuensi suara target.            Bahan penelitian ini adalah serat sisal anyam, resin polyester, styrofoam. Komposit dibuat dengan metode hand lay-up. Komposit  sandwich polyester tersusun dari dua skin dengan core ditengahnya. Fraksi volume serat komposit sandwich polyester sebagai skin adalah 30 %.  Core yang digunakan ada 2 macam variasi ketebalan yaitu 30 mm dan 40 mm. Spesimen dan prosedur pengujian koefisien redaman suara mengacu pada standar ASTM E1050.Hasil rata-rata redaman suara yang besar terdapat pada spesimen komposit sandwich dengan ketebalan core 30 mm dengan hasil yang fluktuatif pada kenaikan tingkat frekuensi pegujian.  Pada frekuensi rendah 250 Hz dengan nilai redaman 0,809 yang dilapisi kain beludru, frekuensi sedang 750 Hz dengan nilai redaman 0,819 yang dilapisi karpet, dan pada frekuensi tinggi 1500 Hz dengan nilai 0,725 yang dilapisi kain beludru.
Co-Authors A. Zainuri, A. Achmad Zainuri Agus Dwi Catur Ahmad Zainuri Dwi Setyawan Emmy Dyah Sulistyowati, Emmy Dyah H. Harsi, H. IGNK Yudhyadi Insan Andrian, Insan M. Hafidzul, M. Nasmi Herlina Sari Pandiatmi, P. Pandri Pandiatmi Paryanto Dwi Setiawan, Paryanto Dwi Pnadri Pandiatmi, Pnadri S. Supriadi, S. S. Supriyadi, S. Saiful Askar, Saiful Sujita, Sujita Sulistyowati, E. D. T. Topan, T.