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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS) Jurnal Teknik Mesin Jurnal Teknoin Jurnal Teknik ITS IPTEK The Journal of Engineering IPTEK Journal of Proceedings Series IPTEK The Journal for Technology and Science Jurnal Edukasi dan Penelitian Informatika (JEPIN) Teknomekanik JMES The International Journal of Mechanical Engineering and Sciences Automotive Experiences Sewagati Jurnal Polimesin
Agus Sigit Pramono
Departemen Teknik Mesin, Fakultas Teknologi Industri, Institut Teknologi Sepuluh Nopember (ITS)
Aerospace Engineering Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Other

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Journal : IPTEK The Journal of Engineering

 1 
The Comparisson between LBP and SQI Methods in the Surface Roughness Measurement Using ESPI Method Mohammad Khoirul Effendi; Agus Sigit Pramono; Pandu Pratama; Rifki Wardana
IPTEK The Journal of Engineering Vol 2, No 1 (2015)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23378557.v2i1.a470

Abstract

Surface roughness measurement using direct contact methods raises several issues, for examples stylus wear and size limitation problems. Furthermore non-contact methods are proposed to solve these problems. One of them is Electronic Speckle Pattern Interferometry (ESPI), which use Helium-Neon (He - Ne) as laser light source. A speckle pattern is produced by scattered light on the surface of the measuring object due to the interference of laser beams, and it will be captured by Charge Coupled Device (CCD) camera. Afterwards Linear Binary Pattern (LBP) and Self Quotient Image (SQI) methods are used to reduce illumination effect in the captured image. The average gray-level from the previous process will be converted into a surface roughness value by gray level to surface roughness conversion formulation. It is obtained from correlation value between gray level and a set of standard roughness. The standard roughness value range is start from 0,05 μm to 12,5 μm. It is measured from five different final machining process, which are flat lapping, grinding, horizontal milling, and vertical milling. As verification, the results of ESPI method will be compared with the result of direct contact tools using Mitutoyo Surftest 301 and 401.
The Effect of Fan Blade Radiator Gas Turbin Generator Angle on Auxiliary Cooling Water System Performance Erryawan Kusuma; Agus Sigit Pramono
IPTEK The Journal of Engineering Vol 5, No 1 (2019)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23378557.v5i1.a5023

Abstract

Auxiliary Cooling Water System (ACWS) on Gas turbine Blok 1 No 3 Muara Karang has declined its reliability because of 4 fan radiators must be operated due to increasing ambient air temperature and increase inspection interval from 8000 to 32.000 EOH after Upgrade in turbine part. This study aims to optimize Radiator ACWS performance by increasing the cooling fan air mass flow by changing the fan blade angle so it can be operated with 3 fan on and 1 fan standby. This research began with taking data each measurement at 11°, 13°, 15°, 17°, and 19°. Then, it will simulated by software to know the influence of air mass flow addition due to the change of the blade fan angle to the radiator water outlet temperature and to know the input operating parameters when the temperature outlet radiator is 46°C. The results of this study is validation of experimental and numerical data calculations that have errors below 5%. The maximum angle of fan blade can be set until 19°. At 16.7° with operation 3 of 4 fan on, radiator temperature output is 46° and heat disposed is 627.2 kW where this value is the same value as the current condition.
Co-Authors Achmad Syaifudin Achmad Syaifudin Agung Prijo Budijono Alfiana N Hidayati Alhadi, Kafi Hannan Alief Wikarta Ari Surya Yulianto Arif Wahjudi Arifin, Ahmad Anas Bambang Pramujati Bici, Michele Budi Harto Deta Rachmat Andika Dinny Harnany Effendi, M Khoirul Erryawan Kusuma Gilas Kurnia Taufik Hanif Pribadi Harnany, Dinny Harus Laksana Guntur I Made Londen Batan I Nyoman Sutantra Indra Sidarta Jean Mario Valentino, Jean Mario Julendra Bambang Ariatedja Mohammad Khoirul Effendi Mohammad Khoirul Effendi Muhammad Khoirul Effendi Oegik Soegihardjo Pandu Pratama Perkasa, Mustasyar Prasetyo Putra Wibowo Pratiwi, Fungky Dyan Rifki Wardana Sampurno Sampurno Sasaki, Katsuhiko Shalahuddin, Lukman Solichin, Moch. Suhardjono Suhardjono Suhardjono Suhardjono Sultoni, Arif Indro Susila Candra Sutantra, I.N. Sutikno Sutikno Sutikno Sutikno Unggul Wasiwitono Wiwiek Hendrowati Yahya, Muhammad Yusri Dzal Yohanes Yuniarto, Muhammad Nur Yusuf Kaelani