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All Journal Turbo : Jurnal Program Studi Teknik Mesin Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin
Sitinjak, Heryanto
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Control & Systems Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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PENGARUH MATRIKS DAN KETEBALAN SKIN TERHADAP SIFAT MEKANIK KOMPOSIT SANDWICH DENGAN CORE POLYURETHANE Hestiawan, Hendri; Afrizal, Yuzuar; FA, A. Sofwan; Sitinjak, Heryanto; Fadilah, M. Hafidz
TURBO [Tulisan Riset Berbasis Online] Vol 13, No 2 (2024): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v13i2.3719

Abstract

Indonesia is an earthquake-prone country related to its geological position located in the Pacific ring of fire. Therefore, it is necessary to mitigate earthquake disasters so as not to cause much loss, both property and life. One of them is by introducing the walls of earthquake resistant composite house (RKTG) made from sandwich composites. The purpose of this study was to investigate the effect of matrix and skin thickness on the mechanical strength of sandwich composites with polyurethane cores.). Sandwich composites use variations of glassfiber reinforced polymer (GRP) and glassfiber reinforced concrete (GRC) skins and variations in skin thickness of 6 mm and 10 mm. The adhesive used is polyester resin with methyl ethyl ketone peroxide catalyst. The manufacturing process of making sandwich composites uses the hand lay-up technique with a sandwich composite thickness of 10 cm. The results showed that GRP skins have better mechanical properties than GRC skins. Skin thickness can also improve the mechanical properties of sandwich composites. The best mechanical strength was obtained in the GRP skin type with a skin thickness of 10 mm, namely a flexure strength of 1.63 MPa, a compressive strength of 10.7 MPa, and a tensile strength of 0.08 MPa.
PROSES PRODUKSI KOMPONEN DUDUKAN WINCH KENDARAAN KHUSUS TAKTIS MAUNG 4X4 Sitinjak, Heryanto; Supardi, Nurul Iman; Bismantolo, Putra
Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin Vol. 7 No. 2 (2023): Oktober 2023
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rekayasamekanika.v7i2.34058

Abstract

In accelerating production, the manufacturing process uses modern equipment such as machines and implements a structured program to carry out production. This study aims to determine the process of making winch mount components for Maung 4x4 special tactical vehicles. The manufacturing process begins with designing the product, determining the specifications of the material from which the product is made. After that, the raw material is modified through a manufacturing process to be formed into the required parts. To speed up and simplify the production process, a CNC (Computer Numerical Control) machine is used which works automatically according to the program made. To produce a desired product, of course, must go through several stages. In production the manufacturing process requires machining stages. This is because the desired product cannot be produced through only one machining process. Manufacturing steps, namely, making component designs, material verification (material verification) cutting processes, bending processes, and welding processes.
Co-Authors Afrizal, Yuzuar Bismantolo, Putra FA, A. Sofwan Fadilah, M. Hafidz Hendri Hestiawan Nurul Iman Supardi