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All Journal Jurnal Teknik Industri : Jurnal Hasil Penelitian dan Karya Ilmiah dalam Bidang Teknik Industri INTEK: Jurnal Penelitian
Pineng, Marthina
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Computer Science & IT Decision Sciences, Operations Research & Management Engineering Environmental Science Industrial & Manufacturing Engineering

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Tensile Analysis of Epoxy Resin Composite Material with Petung Bamboo Strip Reinforcement Bethony, Frans Robert; Pineng, Marthina; Paliling, Formanto; Simon, Christof Geraldi
INTEK: Jurnal Penelitian Vol 10 No 2 (2023): October 2023
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/intek.v10i2.4578

Abstract

This study aims to analyze the optimal tensile strength of epoxy resin composite material with woven bamboo strips (Dendrocalamus asper). Petung bamboo is made in strips measuring 0.01 cm, 0.1 cm wide, 45 cm long and then woven then soaked in brackish water with variations of soaking for 0, 1, 2, 3, and 4 weeks with river water salinity levels of 10, 20 and 30%. The printed composite material with a composition of 60% epoxy resin and 40% catalyst as a hardener with  1, 2, and 3-layer woven strips and held for 24 hours. Composite material printing by hand lay-up method. For 1 layer of woven composite material, epoxy resin is poured into a mold then woven petung bamboo strip and covered with epoxy resin pressed for 24 hours. The composite material is removed from the molded container and then left in an outdoor airtight room for one week. Composite materials are repaired to ascertain whether there are still defects or no longer exist, especially on the surface of composite materials. The next process is the manufacture of test samples, for tensile tests based on ASTM (D638-02) Before the test is carried out, the sample is repaired first to ensure that the sample is in a standard state to be ready for testing.  Test results of optimal tensile strength of composite materials with woven reinforcement of petung bamboo strips without immersion of 1 layer (40.22 MPa), 2 layers (50.13 MPa), and 3 layers (60.07 MPa). The optimal tensile strength of composite materials with 1 layer of webbing and soaking time of 3 weeks (51.08 MPa) has increased (19.12%). The optimal tensile strength of composite materials with 2-layer webbing and soaking time of 2 weeks (61.05 MPa) has increased (20.69%). The optimal tensile strength of composite materials with 3-layer webbing and soaking time of 2 weeks (70.15 MPa) has increased (19.08%). Keywords: composite material, bamboo petung, woven strip, brackish water, tensile strength
Analisis Kekuatan Bending Hasil Pengelasan SMAW Pada Baja ST 42 Menggunakan Pendingin Oli SAE 20W-50 Dengan Memvariasi Kuat Arus Johan, Chendri; Pineng, Marthina; Pakiding, Marco
JTI: Jurnal Teknik Industri Vol 9, No 2 (2023): DESEMBER 2023
Publisher : Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/jti.v9i1.22989

Abstract

 Metode eksperimental adalah metode yang digunakan dalam penelitian ini dimana proses pengelasan dilakukan dengan menggunakan las SMAW, elektroda E-7016, kampuh V, memvariaskan arus pengelasan dan menggunakan media pendingin oli SAE 20W-50. Adapun tujuan penelitian ini adalah untuk mengetahui kekuatan bending yang dihasilkan dari proses pengelasan menggunakan baja ST 42. Hasil pengujian proses pengelasan SMAW pada baja ST 42 menunjukan bahwa pada arus 115 A memiliki nilai kekuatan bending tertinggi hasil pengelasan dengan nilai kekuatan bending rata-rata 1942,03 N/mm2, dan terendah pada arus 75 A dengan nilai kekuatan bending rata-rata 1800,93 N/mm2. Hasil pengamatan pada uji bending dapat terlihat bahwa nilai kekuatan bending baja ST42 pada raw material atau spesimen tanpa las memiliki nilai tertinggi sebesar 1819.69 N/mm2. Hasil pengujian kekuatan bending pada pengelasan SMAW pada material baja ST 42 dengan memvariasikan arus 75A,95A, dan 115A pada kampuh V dengan pendingin oli SAE 20W-50 dapat disimpulkan bahwa hasil uji bending semakin tinggi arus maka nilai kekuatan bending semakin meningkat.
Co-Authors Formanto Paliling Frans Robert Bethony Johan, Chendri Pakiding, Marco Simon, Christof Geraldi