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All Journal Dinamika Teknik Mesin : Jurnal Keilmuan dan Terapan Teknik Mesin Jurnal Karya Pengabdian Teknik Mesin
S. Sinarep
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Aerospace Engineering Automotive Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering Physics

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Pengaruh waktu dan jarak electroplating nikel pada baja karbon rendah terhadap kekerasan permukaan S. Salman; I.M.A. Sayoga; I.D.K. Okariawan; S. Sinarep; R. Sutanto; A. Wiranata
Dinamika Teknik Mesin Vol 9, No 1 (2019): Dinamika Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (160.189 KB) | DOI: 10.29303/dtm.v9i1.251

Abstract

Electroplating is the process of coating an object with other metals that utilizes electricity in electrolyte liquid. In this research the carbon steel as anode material was coated by steel using nickel as catode.  The electroplating times and distances of anode catode were varied 6, 9, and 12 minutes and 150, 200, 250 mm. The hardness of the coated materal was evaluated later on by using micro vikers hardness testing. The result indicates that increasing the electroplating time rises the hardness values. The effect of the electroplating time on the harness is significant while the effect of the electrode distance is not.
Pemanfaatan Energi Alternatif untuk Keperluan Rumah Tangga Menuju Mandiri Energi M. Mirmanto; Yesung Allo Padang; Pandri Pandiatmi; S. Syahrul; S. Sinarep
JURNAL KARYA PENGABDIAN Vol 1, No 2 (2019): April, Jurnal Karya Pengabdian
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1406.233 KB)

Abstract

The electrification ratio in Indonesia has only reached an average of 95.35%, but this achievement has not been evenly distributed, there are regions with high electrification and some that are very low. The electrification ratio in NTB for example has only reached 84.11%, therefore in NTB, the community still lacks electricity. Meanwhile, in fact the NTB region has very potential energy sources, such as solar energy, water energy, wind energy, marine energy, geothermal energy, biomass energy and biogas / syn-gas. However, the utilization of various energies has not been maximized. Based on this situation, this activity aims to introduce and promote the use of renewable energy sources. This community service activity was carried out at SMAN 1 Alas, West Lombok in the form of counseling and demonstration of renewable energy producers. In general, this activity ran well, safely and smoothly and got an encouraging response from the participants, and also got support from the community of SMAN 1 Alas and their teachers.
Karakteristik komposit sandwich dengan inti (core) open cell foam bambu berlubang P.D. Setyawan; S. Sugiman; S. Sinarep; H. Hilwan
Dinamika Teknik Mesin Vol 13, No 2 (2023): Dinamika Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v13i2.654

Abstract

The sandwich composite used in this investigation has a bamboo open-cell foam core and a plywood skin. In this study, the density, flatwise compressive strength, flexural strength, and water absorption of sandwich composite materials will be determined. The volume proportion of fiber in the bamboo foam core was 15% in this investigation, and PVAc adhesive was employed. The open-cell foam core has a square-shaped hollow in the center and hole spacings of 30mm, 40mm, and 60mm. The tests included density testing (ASTM C271), flatwise compression testing (ASTM C365-05), flexural testing (ASTM C393), and water absorption testing (ASTM C272). According to the study's findings, compared to sandwich composites with core-opened cell foam without holes, sandwich composites with core-opened cell foam with holes have an average density, an average specific flatwise compressive strength, and an average specific bending strength that are smaller. The percentage of water absorption in the sandwich composite demonstrates the opposite. Comparing the sandwich composite with core-opened cell foam without holes (0.45 g/cm3) to the sandwich composite with core-opened cell foam with holes, the average density of the latter decreased by 6–13%. The decrease in the avarage specific flatwise compressive strength of the sandwich composite with a hollow core was 2-20% compared to the sandwich composite with an open-cell foam core without holes (41.22 MPa/cm3/gr). The average specific bending strength of the sandwich composite with the core opened cell foam with holes was reduced by 40–50% when compared to the sandwich composite with the core opened cell foam without holes (26.38 MPa/cm3/gr).
Co-Authors A. Wiranata H. Hilwan I.D.K. Okariawan I.M.A. Sayoga M. Mirmanto, M. P.D. Setyawan Pandri Pandiatmi R. Sutanto S. Salman S. Sugiman S. Syahrul Yesung Allo Padang