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All Journal Rekayasa Mesin Jurnal Mechanical PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat Jurnal Metalurgi dan Material Indonesia Jurnal Polimesin
Hendri Hestiawan
Universitas Bengkulu
Agriculture, Biological Sciences & Forestry Automotive Engineering Chemistry Control & Systems Engineering Economics, Econometrics & Finance Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences

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Pengaruh Perlakuan Alkali-silan terhadap Sifat Mekanis Komposit Hibrid yang Diperkuat Serat Agel dan Serat Gelas : Effect of Alkali-Silane Treatment on Mechanical Properties at Glass Fabric and Woven Agel (Corypha gebanga) Reinforced Hybrid Composites Hendri Hestiawan; Jamasri; Kusmono
Jurnal Metalurgi dan Material Indonesia Vol. 3 No. 1 (2020): April
Publisher : Badan Kerja Sama Pendidikan Metalurgi dan Material (BKPMM)

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Abstract

The aim of this research is to investigate the effect of alkali-silane on mechanical properties at glass fabric and woven agel (Corypha gebanga) reinforced hybrid composites. The materials used are woven agel fiber, glass fabric, unsaturated polyester resin of yukalac 157 BQTN, and catalyst of methyl ethyl ketone peroxide. Manufacturing techniques used vacuum bagging with a suction pressure of 70 cmHg at room temperature. The woven agel were treated with 4% sodium hydoxide solution for 1 hour, 5% silane solution for 3 hours, and a combined sodium hydoxide and silane solution. The tensile, flexural, and impact test specimens based on ASTM D 638-02, D 790-02, and D 5942-96 standards respectively. The results of tensile, flexural, and impact tests showed that the highest tensile and flexural strength, and impact toughness ​​were obtained on alkali-silane treated hybrid composites, i.e. 78 MPa, 116 MPa, and 38 kJ/m2 respectively. It can be concluded that the alkali-silane treatment effectively improves the mechanical properties of at glass fabric and woven agel reinforced hybrid composites
Studi Pengaruh Fraksi Volume dan Susunan Serat Terhadap Kekuatan Tarik dan Bending Komposit Resin Berpenguat Serat Rotan (Calamus Trachycoleus) Hendri Hestiawan
JURNAL MECHANICAL Vol 5, No 1 (2014)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Lampung

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Abstract

       Use of natural fiber composite material started being developed in the manufacturing industry. Progress is due to the composite nature of the privilege of the composite itself, such as: has a low density, capable of biodegradable, recyclable, has good mechanical properties, and can be renewed because it comes from nature. This research aims to determine the effect of fiber volume fraction and the composition to the tensile strength and bending strength on rattan fiber reinforced composites.The research material is rattan fiber, epoxy resin and catalyst methyl ethyl ketone peroxide (MEPOXE). Shape of the specimen based on the ASTM D3039 standard for tensile test and ASTM D790-03 for the bending test. Research specimens varied in aggregate form filler fibers are straight, cross, and random with fiber volume fraction of 10%, 20%, 30%, and 40%. Manufacture of specimens using hand lay-up method. To determine the mechanical properties of the material bending test and tensile test and photo macro structure.The results showed that the addition of fiber volume fraction resulted in an increase in tensile stress and bending. The highest tensile stress occurs on the fiber volume fraction of 40% with a straight fiber composition of 31.21 MPa. The highest bending voltage obtained at 40% fiber volume fraction and the fiber composition of the cross of 194.12 MPa. Observations of macro structure indicate that fracture surface is relatively flat and shiny indicating that the rattan fiber reinforced composites are brittle. Keywords: Composites, the rattan fiber, volume fraction, fiber composition, epoxy resin
PENGARUH PERLAKUAN ALKALI TERHADAP SIFAT FISIS DAN MEKANIS SERAT LANTUNG (ARTOCARPUS ELASTICUS) Hendri Hestiawan; Dody Ariawan; Khairul Amri; Agus Nuramal; Aditya Afrizal; Sudibyo Sudibyo
Jurnal Rekayasa Mesin Vol. 13 No. 3 (2022)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v13i3.1220

Abstract

Alkali treatment of natural fibers is one of the chemical treatments used to increase the exposed cellulose content through the removal of hemicellulose and lignin on the fiber surface. This study aims to investigate the effect of alkali treatment on the physical and mechanical properties of lantung fibers. The materials used in this          research consist of: lantung fiber (Artocarpus elasticus) with an alkali treatment process using 4% and 6% natrium hydroxide (NaOH) solutions and immersion time of 1 and 2 hours, at room temperature. The fiber neutralization process includes washing the fibers using fresh water and drying them at room temperature for 48 hours. Tests carried out include XRD test, SEM photo observations conducted at Balai Penelitian Teknologi Mineral, Lembaga Ilmu Pengetahuan Indonesia and fiber tensile test based on ASTM D 3379 standard. The results of XRD and fiber tensile test showed that alkali treated lantung fibers were effective in increasing the crystallization index (CI) value and fiber tensile strength. The highest CI values and fiber tensile strength were obtained at alkali treatment of 4% NaOH for 2 hours, respectively 85.42% and 228.5 MPa. The results of SEM photo observations showed that alkali treatment on the fiber surface could remove impurities based on the concentration of sodium hydroxide (NaOH) solution and soaking time. This shows that proper alkali treatment can increase the strength of lantung fibers.
Pelatihan Mesin Industri Pakan Ikan Berbasis PLTS 2 WP di Desa Selika 2 Kecamatan Tanjung Kemuning Kabupaten Kaur: PLTS 2 WP Based Fish Feed Industry Machine Training in Selika 2 Village, Tanjung Kemuning District, Kaur Regency Khairul Amri; Yanolanda Suzantry Handayani; Hendri Hestiawan; Hardiansyah Hardiansyah
PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat Vol. 8 No. 3 (2023): PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat
Publisher : Institute for Research and Community Services Universitas Muhammadiyah Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33084/pengabdianmu.v8i3.4278

Abstract

Selika 2 Village, Tanjung Kemuning District, Kaur Regency is located in Bengkulu Province in the south, where many fish farming industries have been built in Selika 2 Village due to the high unemployment rate. Many fish farming industries were built to reduce the unemployment rate in Selika 2 Village. However, the obstacle of the fish farming industry is the high price of fish feed, and the small fish feed industry needs help to afford it, so the price of fish being sold is high, and eventually, many industries are closed. Even though the Natural Resources (SDA) owned in Selika 2 Village are numerous, for example, corn, cassava, rice, and golden snails, widely cultivated in the rice fields. This natural resource can be utilized and processed into high-protein fish feed. So for that, our Kosabangsa service team donated several fish feed industry machines with a PLTS power source of 2 MWP, the method of this service is a team of experts providing training on running feed industry machines. The aim of this dedication is that in the future, in Selika Village, a fish feed industry can be built where the price of fish feed can be below the market price of Rp. 5,000,-/kg.
Effect of green clam shells powder addition on properties biodegradable films of polyvinyl alcohol (PVA) Hendri Hestiawan; Yuzuar Afrizal; Junas Haidi; Candy Juyetzu
Jurnal POLIMESIN Vol 21, No 2 (2023): April
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v21i2.3261

Abstract

This paper presents an experimental study of the addition of green clam shells powder (GCSP) to the biodegradable film properties of polyvinyl alcohol (PVA). To get GCSP, the green clamp shell was immersed in a 50% NaOH solution for 2 hours, blended until the particle size passed 100 mesh, then heated at a temperature of 500 oC for 2 hours. The Biodegradable film characteristic was investigated by the addition of GCSP (2, 4, 8, and 10 %wt) in PVA suspension. PVA/GCSP biodegradable films were prepared by a casting solution method. The GCSP functional group's molecular chemical bond and structural analysis were tested using Fourier Transform Infrared (FTIR) and X-Ray Diffraction (XRD). To obtain the mechanical properties of biodegradable films, a tensile test was carried out. The results of the FTIR and XRD test showed that the alkali treatment or/and the calcination process affected the GCSP grain structure. SEM micrographs showed that the grain structure of GCSP which was treated with alkali or/and the calcination process had a more uniform and homogeneous size. The addition of GCSP to PVA was able to increase the tensile strength of the biodegradable film. Overall, the optimal addition of GCSP was 10 wt.% which was calcination treated in a PVA matrix with tensile strength, elongation at break, and Young's modulus of 170 MPa, 18%, and 1184 MPa, respectively
Co-Authors Aditya Afrizal Agus Nuramal Candy Juyetzu Dody Ariawan Hardiansyah Hardiansyah Jamasri . Junas Haidi Khairul Amri Kusmono Sudibyo Sudibyo Yanolanda Suzantry Handayani Yuzuar Afrizal