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- W2895989770 abstract "Temperatures in the high pressure chamber of aircraft engines are continuously increasing to improve the engine efficiency and constitutive materials need to be thermally protected. The first protection is a ceramic thermal barrier coating (TBC) cast on all the hot gas-exposed structure. The second protection is provided by a cool air layer realized by the use of a thousand of drills on the parts where a cool air is flowing through. The laser drilling process is used to realize these holes at acute angles on this coated mutlimaterial. The present work aims at characterizing interfacial cracking induced by laser drilling on coated cobalt base super alloy. This work attached to quantify the crack by several microscopic observations with regards to the most significant process parameters related as the angle beam. The difference between the laser/ceramic and the laser/substrate interaction is also studied with real time observation by using a fast movie camera.Temperatures in the high pressure chamber of aircraft engines are continuously increasing to improve the engine efficiency and constitutive materials need to be thermally protected. The first protection is a ceramic thermal barrier coating (TBC) cast on all the hot gas-exposed structure. The second protection is provided by a cool air layer realized by the use of a thousand of drills on the parts where a cool air is flowing through. The laser drilling process is used to realize these holes at acute angles on this coated mutlimaterial. The present work aims at characterizing interfacial cracking induced by laser drilling on coated cobalt base super alloy. This work attached to quantify the crack by several microscopic observations with regards to the most significant process parameters related as the angle beam. The difference between the laser/ceramic and the laser/substrate interaction is also studied with real time observation by using a fast movie camera." @default.
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- W2895989770 date "2012-01-01" @default.
- W2895989770 modified "2023-09-26" @default.
- W2895989770 title "Delamination induced by laser drilling on a base cobalt superalloy" @default.
- W2895989770 doi "https://doi.org/10.2351/1.5062405" @default.
- W2895989770 hasPublicationYear "2012" @default.
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