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All Journal Jurnal Multidisiplin Madani (MUDIMA)
Gugun Gundara
Universitas Muhammadiyah Tasikmalaya, Indonesia
Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Industrial & Manufacturing Engineering Social Sciences

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Analisis Kekuatan Arus Terhadap Ketangguhan dan Ketahanan Sambungan Pada Proses Las Tig Gugun Gundara; Aditiya Adam Biggunah
Jurnal Multidisiplin Madani Vol. 1 No. 3 (2021): Desember 2021
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (547.589 KB) | DOI: 10.55927/mudima.v1i3.50

Abstract

Proses pengelasan TIG bertujuan untuk mengetahui kekuatan tarik, lengkung dan struktur mikro pada daerah logam las dan daerah HAZ pada material stainless steel 304 dengan penggunaan variasi arus sebesar 10 A, 20 A, 30 A. Kekuatan tarik sambungan las tertinggi terjadi pada kelompok spesimen 20 Amper yaitu sebesar 425,22 MPa. Kekuatan tarik dengan beban maksimum las tertinggi terjadi pada kelompok spesimen 20 A 656,36 Kgf. Dan pertambahan luas penampang terbesar terjadi pada kelompok spesimen 30 A yaitu sebesar 38,08 mm. Pada uji struktur mikro tidak ditemukan adanya indikasi cacat las, ini ditandai dengan seimbangnya kandungan struktur mikro ferit dan perlit dimana ferit ditandai dengan daerah putih halus sedangkan perlit dengan warna hitam pekat dikarenakan unsur karbon (C) yang dominan sehingga membuat sifat material menjadi getas.
Pengaruh Fraksi Volume Serat Dengan Matriks Epoxy Pada Material Komposit Serat Mendong Gugun Gundara; Dikri Saepul Robani; Aceng Sambas
Jurnal Multidisiplin Madani Vol. 2 No. 7 (2022): July 2022
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/mudima.v2i7.657

Abstract

A composite material is a material that is a mixture of two or more macroscopically mixed materials, so the properties of its forming material are still clearly visible. In this study, the type of fiber used was the natural fiber of mendong. This mendong fiber is made into a composite material using the Hand Lay-up method with four variations in fiber volume, namely (30%, 40%, 50%, and 60%). The fiber binding material (matrix) used is Epoxy. This study aims to determine the characteristics of jack fibers in jack fiber composite materials with an epoxy matrix against tensile strength and modulus etalciticity. Tensile testing refers to the ASTM D 638 Standard. To find out the type of fault from the tensile test results, macro photos are used and find out the shape of the fault and the failure pattern that occurs in composite specimens. From the test results, it is clear that the difference in the composite material of mendong fiber using Epoxy, that with a fiber volume fraction of 60% greater mechanical properties
Co-Authors Aceng Sambas Aditiya Adam Biggunah Dikri Saepul Robani