Claim Missing Document
Check
Articles

Found 33 Documents
Search

Unjuk Kerja Turbin Arus Lintang Berlorong Pengarah dengan Variasi Sudut Pipa Pancar Setyarini, Putu Hadi; Sutikno, Djoko; Dwi Fahmi, Firdaus Nur
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 1, No 2 (2010)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (137.32 KB)

Abstract

Turbin air arus lintang merupakan salah satu alat yang cukup banyak diaplikasikan di lingkungan sekitar kita terutama di proyek mikrohidro di Indonesia. Tujuan penelitian ini adalah untuk mencari unjuk kerja turbin dengan variasi posisi pipa pancar dengan variasi putaran turbin dan penambahan lorong pengarah. Metode penelitian yang digunakan adalah metode penelitian eksperimental nyata (true experimental research). Jenis penelitian ini digunakan untuk menguji pengaruh variasi sudut pipa pancar terhadap unjuk kerja turbin arus lintang. Penelitian ini menggunakan variabel bebas debit air sebesar 2 liter/s, 2.5 liter/s, 3 liter/s, 3.5 liter/s, 4liter/s dan 4.5 liter/s. Dari pengujian yang dilakukan disimpulkan bahwa, besar sudut pipa pancar mempengaruhi unjuk kerja (Torsi, Daya dan Efisiensi) turbin arus lintang. Pada pengujian sudut pipa pancar sebesar 15° dengan debit 4 liter/s dapat menghasilkan efisiensi yang paling tinggi pada pengujian dengan lorong pengarah yaitusebesar 32.67 %.Kata kunci : turbin arus lintang, , lorong pengarah, efisiensi
Deformation and Energy Absorption of Fiber Metal Laminates (FMLS) After Ballistic Impact Load Fadly, Muhammad Syaiful; Purnowidodo, Anindito; Setyarini, Putu Hadi
SENATIK STT Adisutjipto Vol 5 (2019): Peran Teknologi untuk Revitalisasi Bandara dan Transportasi Udara [ISBN XXX-XXX-XXXXX-
Publisher : Sekolah Tinggi Teknologi Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/senatik.v5i0.361

Abstract

Estimated damage levels from ballistic impact zones provide valuable information to make bulletproof materials more effective. This study aims to determine the impact of ballistics including deformation and energy absorption in fiber metal laminates (FMLs) that collide with 9 mm FMJ caliber bullets at speeds of 426 m/s. Finite element method modeling is done using ANSYS 18.1 workbench software. The simulation results show that FMLs can hold the bullet rate with deformation on the back of the target (DOPIII) of 8,55 mm and total energy absorption of 426,59 J at 0,000095 s. The combination of two materials, Al 5083 in the outer layer and kevlar/epoxy as the core, results in faster energy absorption and maximum stress concentrations only occur in the kevlar/epoxy so there is no damage to the first and subsequent layers.
Perilaku Impak Dan Porositas Paduan Al-Si-Mg Pada Pengecoran Sentrifugal Akibat Temperatur Pemanasan Awal Cetakan Setyarini, Putu Hadi
Jurnal Rekayasa Mesin Vol 2, No 1 (2011)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (313.029 KB)

Abstract

Aluminum is widely used as raw materials in engineering because this material is often used to replace other metals with the same function. This occurs when the product must have properties such as light, good heat conductivity, and low melting point. An example of making Aluminium product is centrifugal casting process. Centrifugal casting is a method of casting metal by pouring metal into a mold that rotates with a certain speed. This study aims to determine the effect of preheating temperature of the mold of on impact strength and porosity of aluminum alloy Al-Si-Mg in centrifugal casting. The experiments were carried out with and without mold pre-heating. The temperature of preheated mold were 100 º C, 200 º C, 300 º C, 400 º C. The data obtained were analyzed statistically and theoretically. The results showed that the increasing of the preheating temperature of the mold significantly affects the value of impact strength of aluminum alloy Al-Si-Mg. The highest value of impact strength and the lowest porosity were obtained in the preheating temperature of 400 º C. This is due to reduced temperature gradient between the temperature of molten metal and the mold temperature resulting in a slower cooling rate in a homogeneous suspension.Keywords : centrifugal casting, preheating the mold, aluminum alloy Al-Si-Mg, impact strength, porosity
Pengaruh Fraksi Volume Terhadap Kekuatan Tarik dan Lentur Komposit Resin Berpenguat Serbuk Kayu Gapsari, Femiana; Setyarini, Putu Hadi
Jurnal Rekayasa Mesin Vol 1, No 2 (2010)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (281.803 KB)

Abstract

On the research, composite was made from polyester with volume of filler fraction variable of 15%, 30%, 45% and the type of filler was Mahogany (Swietania mahogani). The filler measurement used was 50 mesh. Polymer matrix used was BQTN 157 unsaturated resin polyester. The tensile test of experiment specimen was based on ASTM D638 M-93. and the bending specimen was based on D790-92 Standard. The higest of tensile strength on the volume fraction of 30% that is of 2.081916 kg/mm2 . For the composite material with particle of composite material mahogany with filler volume fraction of 15% had the average flexural strength of 34.98 N/mm². On the particle with volume fraction of 30% had the highest average flexural strength of 45.6780 N/mm². The higest Modulus of Elasticity(E) and Shear Modulus (G) was owned by the composite with filler volume of 635.464 kg/mm2 dan 958.85 MPa Keywords : Composite, volume fraction, tensile strength, flexural strength
Optimasi Proses Sand Blasting Terhadap Laju Korosi Hasil Pengecatan Baja Aisi 430 Setyarini, Putu Hadi
Rekayasa Mesin Vol 2, No 2 (2011)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (262.739 KB)

Abstract

Corrosion is naturally occuring phenomenon and will be exist by itself in the metal. The metal will be damaged by an electrochemical reaction with its environment and can not eliminated but can do a variety of prevention efforts, such as by using a barrier layer that is in the process of painting. In the process, the quality of painting is paint adhesion influenced by surface roughness. The preparation can be done by themethod of spraying a sand blasting abrasive material in the form of sand forced into the surface of the material. sand blasting process could make the paint more durable and more resistant to corrosion. The parameter used in this study were sand blasting spraying pressure i.e 4;4,5;5;5,5 bar, sand blasting spraying angle 600; 750; 900. The results showed that the greater the pressure and angle of sand blasting, the corrosion rate is lower Average corrosion rate of the lowest occured at 5 bar spraying pressure and 900 spraying angle were 7.2157-E5; 7.1157-E5; 6.95-E5 mpy Keywords : sand blasting, corrosion.
Pengaruh Kekasaran Permukaan Terhadap Porositas Hasil Hot Dipped Galvanizing (HDG) Gapsari MF, Femiana; Setyarini, Putu Hadi; Alamsyah, Fikrul Akbar
Jurnal Rekayasa Mesin Vol 3, No 1 (2012)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (149.975 KB)

Abstract

The process of Hot Dipped Galvanizing (HDG) is done in this study in order to cover steel AISI 1010. This study is aimed at investigating the influence of the variation of roughness level of specimen towards the layer thickness and the porosity of the hot dipped galvanizing of steel AISI 1010. The level of roughness of the specimen is obtained from grinding on grid 100, 500, 800, and 1000. This process causes difference in the roughness of the surface which is measured by using the Surface Roughness Test. The controlled variable is dipping temperature of 480oC. The time of hot dipped galvanizing is 6 minutes, while the time of grinding is 3 minutes. The test done in this study is non destructive test with spray test. The result showed that the porosity increased as the function of the roughness.Keywords: hot dipped galvanizing, spray test, porosity, surface roughness.
Pengaruh Kekasaran Permukaan Terhadap Ketebalan Lapisan Hasil Hot Dipped Galvanizing (HDG) Alamsyah, Fikrul Akbar; Setyarini, Putu Hadi; MF, Femiana Gapsari
Jurnal Rekayasa Mesin Vol 3, No 2 (2012)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (542.169 KB)

Abstract

The process of Hot Dipped Galvanizing (HDG) is done in this study in order to cover steel AISI 1010. This study is aimed at investigating the influence of the variation of roughness level of specimen towards the layer thickness of the hot dipped galvanizing of steel AISI 1010. The level of roughness of the specimen is obtained from grinding on grid 100, 500, 800, and 1000. This process causes difference in the roughness of the surface which is measured by using the Surface Roughness Test. The controlled variable is dipping temperature of 480oC. The time of hot dipped galvanizing is 6 minutes, while the time of grinding is 3 minutes. The test done in this study is non destructive test with spray test. The result showed that the layer thickness increased as the function of the roughness.Keywords: hot dipped galvanizing, spray test, layer thickness surface roughness.
Proses Pack Nitriding dengan Variasi Suhu dan Media Pupuk Nitrogen Terhadap Kekerasan AISI 420 Sulistyo, Erwin; Setyarini, Putu Hadi; Sudana, Yoni
Jurnal Rekayasa Mesin Vol 1, No 1 (2010)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (174.174 KB)

Abstract

The aim of this research was to investigate the effects of heating temperature and concentration of nitrogen fertilizer, i.e urea and ZA, during pack nitriding to the surface hardnessof AISI 420. The process was done by heating the steel of AISI 420 with temperature varied between 4200C, 4700C, 5200C, 5700C dan 6200C for 6 hours after stress relieving in the pack fulfiled with urea or ZA. The result measured by microvickers hardness tester showed that the hardness increased as the function of the temperature.Keywords : pack nitriding, temperature, hardness, AISI 420, nitrogen fertilizer
Analisis Keandalan Mesin Produksi Tissue Basah Sulistyarini, Dwi Hadi; Setyarini, Putu Hadi; Cahyawati, Amanda Nur
Jurnal Rekayasa Mesin Vol 10, No 1 (2019)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2019.010.01.12

Abstract

The wet tissue company in this research has 46 volpack machines, 44 are used to produce wet sanitizer tissue and 2 other machines are used to produce wet cologne tissue. During this time, the company produces cologne type wet tissue where its production does not reach the production target. One of the causes of this problem was the high downtime influenced by the reliability of these components and machine; so causing the production capacity of wet cologne tissue to be reduced and company's production targets not achieved. Therefore, in order to achieve the company's production targets and to make the production process more efficient and effective, it is necessary good maintenance actions that pay attention to the reliability value of each critical component. This study analyzes the reliability of critical components so that companies can take action to increase their machine reliability.
Pengaruh Variasi Konsentrasi Inhibitor dari Kitosan Sisik Ikan terhadap Perilaku Korosi Besi ASTM A36: Studi Ekstrapolarisasi Tafel dan EIS Hidayatullah, Syarif; Gapsari, Femiana; Setyarini, Putu Hadi
Jurnal Rekayasa Mesin Vol 11, No 1 (2020)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2020.011.01.6

Abstract

Corrosion is the deterioration of metal that can reduce its yield strength, ultimate strength, financial losses, waste of natural resources, and endanger security. Thus, the corrosion rate must be slowed, or if possible, stopped. This study aimed to investigate the mechanism of corrosion protection by using corrosion inhibitors of chitosan extracted from fish scales on ASTM A36 steel. ASTM A36 steel was used as the specimen with a thickness of 3 mm. Fish scales powder was used as chitosan source extracted by using three mechanisms, i.e., deproteination (7% NaOH immersion), demineralization (immersion of 1 M HCl in 100 ml) and deacetylation (immersion process with 70% NaOH concentration). Corrosion inhibitor was composed of 8 g of chitosan from fish scales, 50 ml of distilled water, and 1 ml of CH3COOH. Corrosion protection with the inhibition method was applied with variations in the inhibitor concentration (1000 ppm, 2000 ppm, 3000 ppm, 4000 ppm, 5000 ppm, and 6000 ppm). The corrosion rate was tested by the polarization method and Electrochemical Impedance Spectroscopy (EIS). The result demonstrated that the effectiveness of corrosion protection started to increase from the concentration of 1000 ppm, 2000 ppm, 3000 ppm to 4000 ppm, with an effective value of 46.444%, 56.386%, 59.691%, and 72.630%, respectively. However, the effectiveness level started to decline from the concentrations of 5000 ppm to 6000 ppm, with 67.388% and 59.276%, respectively. This phenomenon occurs due to the inhibitor concentration has exceeded the maximum limit, so the interaction between inhibitor molecules was higher than the interaction between the inhibitor and the metal surface.