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Analysis of the effects of different machining processes on sealing using multiscale topography

Abstract : This study characterizes seal performance using a multiscale analysis of surface topography. The performance of two surface morphologies is compared: the first one is obtained with machining only and leads to leakage while the second one is obtained with machining and superfinishing and prevents leakage. It is shown that conventional roughness analysis does not enable to identify the differences between both surfaces. Only the use of a new parameter, the order parameter, and the use of a multiscale analysis of surfaces enable to distinguish the studied surfaces and to identify leakage causes. These causes are checked using a numerical contact simulation. It is shown that microroughness plays a major role in leakage.
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https://hal-uphf.archives-ouvertes.fr/hal-03448090
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Submitted on : Thursday, November 25, 2021 - 8:09:08 AM
Last modification on : Friday, November 26, 2021 - 3:46:01 AM

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Raphaël Deltombe, Maxence Bigerelle, Abdeljalil Jourani. Analysis of the effects of different machining processes on sealing using multiscale topography. Surface Topography: Metrology and Properties, IOP Publishing 2016, 4 (1), pp.015003. ⟨10.1088/2051-672X/4/1/015003⟩. ⟨hal-03448090⟩

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