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All Journal Jurnal Teknik Mesin Indonesia METAL : Jurnal Sistem Mekanik dan Termal
Adam Malik
Universitas Andalas
Aerospace Engineering Automotive Engineering Control & Systems Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Pengaruh parameter pemesinan dan komposisi campuran polyester - vinylester terhadap keutuhan permukaan silindris Adam Malik
Jurnal Teknik Mesin Indonesia Vol. 17 No. 2 (2022): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v17i2.381

Abstract

The surface integrity of the cylindrical machining is an absolute requirement for ready-to-assemble components. This deficiency causes the components to fail to be assembled. This is due to the contribution of various factors involved in producing a cylindrical surface. Especially on the cylindrical surface of components made of composite materials. This study reports the effect of lathe & drill parameters, polyester-vinylester blend composition on roundness, roughness, and changes in surface hardness, as well as the main contribution of these factors. This study aims to examine the influence and contribution of polyester-vinylester blend composition, feedrate, speed and depth of cut on roundness, roughness, and changes in surface hardness of lathe & drill products. To achieve this goal, a series of cylindrical surface machining experiments were carried out on workpieces of the polyester-vinylester blend of different compositions. In the experimental set, the Taguchi L9(4)3-OAs method was used. The experimental results show that the most influential on the roundness and surface roughness is the size of the composition of the polyester-vinylester blend followed by the size of the feedrate carried out. Cutting speed and depth of cut don't really matter. While the change in hardness that is very influential is the feed followed by the depth of cut, the composition of the mixture actually shows the opposite between lathe and drilling. The novelty obtained from this experiment is to obtain the desired surface integrity of the components made of composites by mixing composite matrix materials.
Effect of Spindle Speed, Feedrate, Tool Geometry, and Polyester & Vinylester Blends on Surface Roughness and Surface Hardness Alteration of the Hole Adam Malik; Exel Athoriq; Muhammad Hafiz; Hairul Abral
METAL: Jurnal Sistem Mekanik dan Termal Vol 7, No 1 (2023): Jurnal Sistem Mekanik dan Termal (METAL)
Publisher : Department of Mechanical Engineering, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/metal.7.1.27-33.2023

Abstract

In this study, 2 types of polymers were mixed, namely polyester and vinylester called polyester-vinylester blend (PVB) as the test workpiece. The experiments carried out were testing the surface quality of the hole, namely surface roughness (Ra), and surface hardness alteration (SHA) after drilling. In this study, the effects of spindle speed (n) & feedrate (f), cutting-edge angle (Kr), and PVB composition (P%V%) were tested. The results showed that the factor that most influenced the surface roughness value was the feedrate with a contribution value of 39% and the PVB composition (32%) for PVB dominantly polyester. Whereas in vinylester dominant PVB, the most influential factor is the spindle speed (50%). For the measurement of surface hardness alteration that occurs, the factor that affects surface hardness alteration is the cutting-edge angle (44%) in PVB dominantly of polyester. While in vinylester dominant PVB, the influencing factor is spindle speed (44%).
Co-Authors Abral, Hairul Exel Athoriq Muhammad Hafiz