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All Journal Otopro G-Tech : Jurnal Teknologi Terapan Jurnal Pengabdian Polinema Kepada Masyarakat Jurnal Pengabdian Kepada Masyarakat (JPKM) Logic : Jurnal Rancang Bangun Dan Teknologi Jurnal Pengabdian Kepada Masyarakat Ceria
Nurlia Pramita Sari
Jurusan Teknik Mesin, Politeknik Negeri Malang
Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Nursing Social Sciences Other

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PENGARUH JUMLAH DAN ARAH SAYATAN TERHADAP HASIL MILLING ALUMINIUM Nurlia Sari; Akhmad Faizin; Muhammad Fakhruddin; Agus Dani
Otopro Vol 19 No 1 Nov 2023
Publisher : Jurusan Teknik Mesin Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/otopro.v19n1.p40-44

Abstract

The quality of production goods, especially milling on aluminum material, is considered good if it is characterized by good surface quality of the components and efficient (short) machining time. There are various factors that affect this. This study investigated the CNC milling machining parameters, namely depth of cut and step over, which were written as the influence of the number and direction of cuts on the surface quality and machining time of aluminum materials. The purpose was to obtain the appropriate parameters so that the machining process is more efficient and with the appropriate quality. The CNC milling used was CNC Dahlih with a 6mm diameter tool, feed rate of 460 mm/min, and rotational speed of 2800 RPM. The variables were vertical cutting direction (depth of cut 5mm) with variations in step over of 0.5 mm, 1 mm, and 2 mm, and horizontal cutting direction (step over 5mm) with variations in depth of cut of 0.5mm, 1mm, and 2mm. So that the number of cuts can be equalized to 4, 6, and 12 in the vertical and horizontal cutting directions. The results showed that the more cuts, the lower the surface roughness, but it increased the machining time. 
SIMULATION OF THE INFLUENCE OF FIBER VOLUME FRACTION AND FIBER ORIENTATION ON THE STRENGTH OF POLYESTER COMPOSITE REINFORCED WITH GLASS FIBER IN BENDING STRENGTH Muhammad Fakhruddin; Imam Mashudi; Nurlia Pramita Sari; Nicky Suwandhy Widhi Supriyanto
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 24 No. 2 (2024): July
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31940/logic.v24i2.79-86

Abstract

Fiber-reinforced composites can be classified into two parts, namely short fiber composites and long fiber composites. Long fibers are generally stronger than short fibers. Long fiber (continuous fiber) is more efficient in laying than short fiber but short fiber is easier to lay than long fiber. Fiber length affects the processability of the fiber composite. Judging from the theory, long fibers can transfer the load and stress from the stress point to the other fiber. In this research, we simulated the effects of volume fraction and fiber orientation in glass fiber-reinforced polyester composites on bending strength to examine the effect of each parameter on the mechanical properties of glass fiber composites. The mechanical properties of the composite were tested using the three-point bending and tensile testing methods. The study expects to find variations in mechanical properties with changes in the glass fiber volume fraction and fiber orientation. In this study, it is planned to function in a relevant environment, the components in this study must be able to operate properly and have been well integrated with prototype manufacturing that has been tested as a test tool function. Notably, the pinnacle of the bending test, measuring 170.41 MPa, was achieved at the specific combination of a 0.5 Fiber Volume Fraction and the 0-90o fiber orientation.
Co-Authors Agus Dani Akhmad Faizin Andita Ganda Andita N.F. Ganda BAYU PRANOTO Elka Faizal Hangga Wicaksono Hari Rarindo Haris Puspito Buwono Heryanto B. Soemardi Hilmi Iman Firmansyah hilmi iman firmansyh Imam Mashudi Kasijanto Kasijanto Muhammad Fakhruddin Muzaki, Mochamad nanang qusim Nicky Suwandhy Widhi Supriyanto Nike N.F Nila Alia Nugroho, Pipit Wahyu Pradana, Yanuar Rohmat Aji Purwoko Sadar Wahjudi Sulistyono Sulistyono Syamsul Hadi hadi