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All Journal Jurnal Energi Dan Manufaktur TEKNIK
I Nyoman Gde Antara
Jurusan Teknik Mesin Universitas Udayana, Kampus Bukit Jimbaran Bali
Energy Engineering Industrial & Manufacturing Engineering

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Sealing Performance Layered Metal Gasket Based on the Simulation Method Karohika, I Made Gatot; Haruyama, Shigeyuki; Antara, I Nyoman Gde; Budiarsa, I Nyoman; Penindra, I Made Dwi Budiana
TEKNIK Vol 41, No. 1 (2020): May 2020
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (803.986 KB) | DOI: 10.14710/teknik.v41i1.26125

Abstract

Studies for corrugated metal gaskets are still ongoing to improve its performance. This is considered to be a single gasket with SUS304 material when contact with flanges that have greater surface roughness, reduced contact width and plastic deformed contact surfaces are incomplete and cannot fill the surface roughness of flanged flanges. The use of softer material than the base material as a surface covering material is used to improve the performance of the gasket. In this study, therefore the effect of modulus of elasticity ratio and thickness ratio on contact width and contact stress, 25A three-layer metal gasket was investigated using Finite Element Analysis. The results showed that the material with tangent modulus, Ehal = Eal / 150 had the highest slope for contact width. While the contact width of the plastic mode gasket is higher than the elastic mode gasket.
Proses Pembentukan Gasket berlapis dengan Metode Elemen Hingga I Made Gatot Karohika; I Nyoman Gde Antara
Jurnal Energi Dan Manufaktur Vol 11 No 2 (2018): Published in Oktober 2018
Publisher : Department of Mechanical Engineering, University of Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (743.99 KB) | DOI: 10.24843/JEM.2018.v11.i02.p06

Abstract

Perkembangan metode elemen hingga memberikan kemudahan bagi para peneliti untuk memprediksi proses dan hasil forming suatu produk sehingga kegagalan bisa dicegah lebih awal dan biaya karena cacat produk bisa dihindari. Pada penelitian ini, proses forming metal gasket three-layer bentuk bergelombang akan di investigasi dengan analisa simulasi yang menggunakan metode elemen hingga. Kesesuaian bentuk produk gasket dengan cetakan mempengaruhi performance gasket tersebut saat proses tightening. Dimensi cetakan gasket menggunakan cetakan gasket 400MPa-mode dengan variasi ketebalan surface layer. Base material menggunakan SUS304 dan surface layer menggunakan ratio modulus elastis 0.1 dan 0.5. Hasil simulasi menunjukkan bahwa gasket forming tidak memenuhi cetakan dan pada bagian puncak gelombang gasket terjadi lekukan. Besarnya lekukan pada puncak gelombang menurun dengan naiknya ketebalan surface layer. The development of finite element methods help the researchers to predict the process and the result of product forming so that failure can be prevented earlier and costs due to product defects can be avoided. In this study, the process of forming metal gaskets of corrugated three-layer forms will be investigated by simulation analysis using finite element method. The suitability of the shape of the gasket product with the mold affects the performance of the gasket during the tightening process. Gasket mold dimensions use 400MPa-mode gasket molds with surface layer thickness variations. Base material using SUS304 and surface layer using Aluminum. The simulation results show that the forming gasket did not fill the mold and at the peak of the gasket convex occurs indentation. The amount of indentation at the convex of the wave decreases with the increase in surface layer thickness.
Penerapan teknologi investment casting pada pembuatan kerajinan perak I Nyoman Gde Antara; I Nyoman Jujur
Jurnal Energi Dan Manufaktur Vol 2, No.1 Juni 2007
Publisher : Department of Mechanical Engineering, University of Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (20.291 KB)

Abstract

Technology of investment casting has been successfully introduced and applied to the process in producing rings of silver jewelry in cooperative members of silver craftsmen association in Desa Celuk Sukawati Gianyar Bali. In this experiment, the casting equipments used were a principal modified casting machine to avoid a costly production. It was found that the application of investment casting was very prospective method. At once process of the application that took less than a working day, 17 pieces of ring could be produced, where 9 pieces (53%) were excellent and 8 pieces (47%) were invalid. This success is believed can be improved effectively either by controlling or optimizing the working parameters of each equipments in advance. Therefore, the application of the investment casting in producing silver jewelry will assist craftsmen not only to increase their products quality and quantity, but it also will prevent a high production cost compared to those of producing traditionally.
AGING CHARACTERISTIC AND MECHANICAL PROPERTIES OF FORMED MG-ZN-AL-RE-CA ALLOYS I Nyoman Gde Antara
Jurnal Energi Dan Manufaktur Vol 3, No.2 Desember 2008
Publisher : Department of Mechanical Engineering, University of Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (569.904 KB)

Abstract

Abstrak The present study focused on aging characteristic and mechanical properties of semi solid formed Mg-Zn-Al-RE-Ca alloys. The alloys are divided into Mg-8%Zn-4%Al-0.6%Ca and Mg-6%Zn-3%Al-0.6%Ca based alloys, and rare earth elements were added in the range from 1 to 3 mass% (hereafter ZAE841, ZAE842, ZAE843 and ZAE631, ZAE632, ZAE633). The alloy specimens were strained, press-formed at 580?C and extracted to prepare specimens for T-6 heat treatment and tensile investigations. The results show that all of the alloys exhibit microstructure that consisting of fine spherical ? particles and fine eutectic compounds around the particles. The peak hardness of the alloys was mainly reached when the solution heat treatment is conducted at temperature of 330?C for 16 hours and aging at 175?C for 32 hours. The hardness numbers increase with increasing content of the alloying elements. Tensile properties at high temperature of semi-solid formed alloys increase in accordance with increasing the amount of compounds. The amounts of compound increase as the alloying element increase.
Co-Authors Haruyama, Shigeyuki I Made Dwi Budiana Penindra I Made Gatot Karohika I Nyoman Budiarsa . I Nyoman Jujur