Analisa Kegagalan Piston Tipe Mahle Pada Auxiliary Engine Man D2866 Le Kapal Meratus Red Reliance PT Meratus Line

Putranto, Nico Bagus (2016) Analisa Kegagalan Piston Tipe Mahle Pada Auxiliary Engine Man D2866 Le Kapal Meratus Red Reliance PT Meratus Line. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Piston tipe mahle merupakan salah satu bagian pada auxiliary engine MAN D2866 LE kapal Meratus Red Reliance. Pada januari 2015, piston tersebut mengalami patah sehingga memberhentikan kinerja mesin. Untuk mengetahui lebi lanjut penyebab kegagalan dari piston ini maka dilakukan analisis kegagalan dalam aspek metalurgi berupa pengamatan makro visual, mikro visual, metalografi, kekerasan brinell, dan uji komposisi OES. Dari hasil uji komposisi didapatkan bahwa material ini merupakan paduan aluminium silikon dengan kadar silicon 11.3%. Dari data pengujian kekerasan, didapatkan bahwa kekerasan di daerah dekat dengan patahan lebih tinggi dibandingkan dengan daerah yang jauh dari patahan. Hal ini dipengaruhi oleh pembebanan yang terpusat pada daerah pin piston. Selain itu, hasil dari pengujian metalografi pada daerah dekat dengan patahan tersebar merata eutektik AlSi. Dengan pengujian fraktografi didapatkan bahwa komponen piston ini mengalami patah lelah dikarenakan pembebanan yang berulang dan terpusat ada satu titik yaitu pin piston. ======================================================================================================================== Mahle type of Piston is a part of auxiliary engine of MAN D2866 LE Red Reliance meratus machine. This piston was broken on January 2015, so it disturbed the machine work. To know further about the reason of the failure of this piston, the failure analysis was done in the metallurgy aspect formed of macro observation, micro observation, microvisual, metallography, brinell hardness, and OES composition experiment. From the result of experiment, it was known that this material is the combination of aluminium and silicon with the 11.3%amount of silicon. From the data of hardness experiment, it was known that the hardness near to fracture was higher than the far one. It is influenced by the burden centered in pin piston area. Beside of that, the area near to the fracture had many euthetic fasa AlSi spread out evenly as the result of metallograph. By using fractograph experiment, it was known that the component of piston here suffered fatigue fracture because of repeated burdening and centered in a specific spot namely pin piston.

Item Type: Thesis (Undergraduate)
Additional Information: RSMt 620.112 Put a
Uncontrolled Keywords: Piston MAHLE, Aluminium-Silikon, Fatigue
Subjects: V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering
V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM731 Marine Engines
Divisions: Faculty of Industrial Technology > Material & Metallurgical Engineering > (S1) Undergraduate Theses
Depositing User: Mrs Ansi Aflacha
Date Deposited: 14 Sep 2017 04:11
Last Modified: 14 Sep 2017 04:11
URI: http://repository.its.ac.id/id/eprint/48848

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