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INDONESIA
Mesin
Published by Institut Teknologi Bandung
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Core Subject : Engineering,
Mechanical Engineering
Arjuna Subject : -
Articles 539 Documents
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PENERAPAN TEKNIK "IDENTIFIKASI PARAMETER" PADA PENGUJIAN TERBANG DENGAN MANUVER STASIONER Said D Jenie
Mesin Vol. 4 No. 1&2 (1985)
Publisher : Mesin

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Suatu model matermatika untuk menerapkan teknik identifikasi parameter, PI, pada pengujian terbang stasioner dikembangkan, Teknik PI yang dipakai disini adalah metoda kesalahan output dengan disertai koreksi parameter melalui persamaan sensitivitas. Pengembangan dilakukan untuk modus keseimbangan longitudinal, namun demikian secara umum teknik ini dapat diterapkan pula pada modus lateral/direksional
PENGARUH KANDUNGAN AIR TERHADAP KEAUSAN ABRASI PADA KOMPOSIT GRAPHITE-EPOXY Satryo Soemantri
Mesin Vol. 4 No. 1&2 (1985)
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Pengaruh kandungan air terhadap keausan abradi pada komposit graphite-epoxy diamati dengan mempergunakan alat pengujian keausan abrasi. Difusivitas komposit graphite epoxy dihitung setelah spesimen dicelupkan ke dalam air dan ternyata difusivitas tergantung pada orientasi fiber terhadap dimensi spesimen. Laju keausan abrasi pada komposit graphite-epoxy yang basah lebih besar 10% daripada yang kering.
KARAKTERISTIK PERMUKAAN BAJA PERKAKAS HASIL PROSES ELEKTRO DISCHARGE MACHINING (EDM) Sigit Yoewono
Mesin Vol. 4 No. 1&2 (1985)
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SIFAT DAN PROSPEK PENGGUNAAN REFRIGERAN CAMPURAN R 12 DAN R 22 Aryadi Suwono; Amir Sambodo
Mesin Vol. 4 No. 1&2 (1985)
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KONSTRUKSI MESIN PERKAKAS KONVENSIONAL DAN NC Komang Bagiasna
Mesin Vol. 4 No. 3&4 (1985)
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Abstract

Mesin perkakas merupakan tulang punggung suatu proses manufakturing maupun suatu sistem produksi, kualitas produk yang dihasilkan tergantung pada interaksi yang terjadi antara benda kerja, perkakas potong dan mesin perkakasnya, dalam hal ini mesin perkakas merupakan salah satu faktor dominan yang mempengaruhi ketelitian benda kerja yang dihasilkan, karenanya mesin perkakas disebut juga sebagai induk dari mesin-meisn yang ada, Dalam makalah ini dibahas pula secara singkat hasil-hasil pengkajian baik eksperimental maupun teoritik yang telah dirintis selama ini di Laboratorium Teknik Produksi, Jurusan Teknik Mesin FTI-ITB.
ACCEPTANCE TEST MESIN PERKAKAS Yatna Yuwana
Mesin Vol. 4 No. 3&4 (1985)
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Abstract

Untuk dapat mengetahui kualitas yang dimiliki oleh suatu mesin perkakas perlu dilakukan acceptance test pada mesin perkakas tersebut, Acceptance test ini dapat meliputi aspek ketelitian geomteri, prestasi kerja, dan kebisingannya. Penilaian dari kualitasnya dapat dilakukan dengan membandingkan harga-harga pengetesannya terhadap harga-harga/toleransi yang ada pada standar. Ada bermacam-macam standar pengetesan yang dapat diikuti, walaupun demikian dengan alasan-alasan tertentu tidak tertutup kemungkinan untuk mengembangkan metode pengetesan sendiri asalkan secara teknis dapat dipertanggungjawabkan.
LONJAKAN THERMAL RUANG BAKAR Pawito S
Mesin Vol. 4 No. 3&4 (1985)
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PENELITIAN BATANG KAWAT JENIS SWRY 11 UNTUK KAWAT INTI ELEKTRODA LAS LISTRIK RD - 260 Durman Batam W; Rochim Suratman
Mesin Vol. 4 No. 3&4 (1985)
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Abstract

Tulisan ini mengetengahkan hasil penelitian terhadap batang kawat jenis SWRY 11 buatan dalam negeri, serta buatan Jepang sebagai pembanging. Di samping terhadap batang kawatnya, penelitian dilakukan terhadap kualitas logam las dan pengaruhnya pada kekuaran sambungan yang dihasilkan, Pembahasan dan kesimpulan ditinjau dari hasil pemeriksaan komposisi kimia, metalografi, makroets, uji tarik serta uji keras.
DEVELOPMENT OF EXPERIMENTAL TESTING SYSTEM AND PERFORMANCE MEASUREMENT OF SMALL TURBOJET ENGINE “OLYMPUS” I.G.K Adhi Yuliartha; Firman Hartono; Djoko Sardjadi
Mesin Vol. 23 No. 1 (2008)
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Abstract

This paper describes the development of experimental testing system and performance measurement of small turbojet engine “Olympus” manufactured by AMT Netherlands. Variables that measured in the measurement are turbine exit gas temperature, fuel and air mass flow, compressor rotational speed, and thrust produced. In this testing, the thrust generated by the engine is measured using bending beam load cell that completed with four strain gauge (each load cell completed with two strain gauge). Strain gauge used in this testing is manufactured by Measurement Group, Inc with gauge factor 2.095 ± 0.5%. Air flow is measured by using Pitot tube which is installed in 400 mm long and 107 mm diameter inlet pipe. Measurement sensor of the Thermocouple, which is used to measure turbine exit gas temperature, and tachometer, which is used to measure compressor rotational speed, are connected to electronic control unit and displayed in engine data terminal. Fuel flow is measured by using digital weight (1 gram resolution) and stopwatch. Fuel consumption at one time interval is recorded manually. The engine revolution was varied from 37000 RPM to 105000 RPM with 10000 RPM interval step. Measurement data are then corrected to get the results on standard pressure and temperature condition. Good agreement between the experiment result and data from references shows that the testing system works as expected.
STUDY ON APPLICATION OF DRAG-REDUCING TRIMETHYLOLETHANE SLURRY IN DISTRICR COOLING SYSTEM Yuli Setyo Indartono; Hiromoto Usui; Hiroshi Suzuki; Yoshiyuki Komoda
Mesin Vol. 23 No. 1 (2008)
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Trimethylolethane (TME) trihydrate slurry is a proper phase-change material for latent heat transportation in cooling systems since it has excellence heat transfer performance and high thermal capacity. Additives, oleyl bishydroxyethyl methyl ammonium chloride (as surfactant) and sodium salicylate (as counter-ion), were used as drag-reducer substance. These additives not only induce drag reduction in TME slurry, but also control particle growth and agglomeration. In this study, energy saving estimation of drag-reducing TME slurry application in district cooling system is invesitgated. It is found that drag-reducing TME slurry gives remarkable pumping power suppresion in the district cooling system. To maintain high performance of heat exchangers, heat transfer enhancement technique may be needed in those exchangers.

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