Tribological characterization of a labyrinth-abradable interaction in a turbo engine application

Delebarre, Corentin; Wagner, Vincent; Paris, Jean-Yves; Dessein, Gilles; Denape, Jean; Gurt-Santanach, Julien

doi:10.1016/j.wear.2016.11.007

Cited by 24 publications

(10 citation statements)

References 17 publications

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“…Previous studies conducted into the material removal mechanism present in a radial fin / abradable liner seal, used at various points of an aero-engine, have focused on radial incursion events [1][2][3][4]. In some cases, this contact has been investigated by considering a single short fin segment incurring into an abradable sample, whereas in others a fully circumferential fin has been utilised.…”

Section: Introductionmentioning

confidence: 99%

Investigating Al-Si base abradable material removal mechanism with axial movement in labyrinth seal system

Zhang

Marshall

Lewis

2022

Wear

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Section: Introductionmentioning

confidence: 99%

Investigating Al-Si base abradable material removal mechanism with axial movement in labyrinth seal system

Zhang

Marshall

Lewis

2022

Wear

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“…Whilst the topic of labyrinth fin seals is one attracting limited research attention, some studies have attempted to replicate engine conditions more closely. Delebarre et al., 4–6 investigated the contact between a sealing fin and an Al-Si abradable material using a fully circumferential arrangement consisting of a single circular fin and abradable sample. Similarly, a continuous circular fin was also employed in Pychynski et al.’s, 7 Munz et al.’s 8 and Thévenot et al.’s 9 studies where the wear behaviour of a labyrinth-honeycomb seal system was investigated.…”

Section: Introductionmentioning

confidence: 99%

An investigation into the role of specimen geometry when undertaking tribological testing on seal fin components

Zhang

Marshall

Lewis

2021

Proceedings of the Institution of Mechanical Engineers, Part C:

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Labyrinth seal systems are used in aeroengines to seal the clearance, the understanding of the wear mechanism of labyrinth seal system is necessary to achieve better sealing performance. In this work a series of tests are conducted on a high-speed test rig capable of fin tip speeds of 100 m/s. With force and temperature measurements recorded in each case, the influence of specimen geometry is investigated. Surface examination and debris analysis is also performed using microscopy post-test. The wear mechanism was found to be influenced by fin geometry. A discrete fin was observed to trigger a more efficient material removal mechanism at both incursion conditions. Where the fin segment and ring-shaped fin leading to increased temperatures and material smearing. The heat dissipate role of fin was also observed during test where longer contact time of fin and abradable gives better heat removal performance.

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“…In this context, research laboratories and engine manufacturers collaborate for the development of predictive numerical tools: experimental set-ups designed by or with the manufacturers provide research labs the much needed data to calibrate these tools. There exists a significant number of experimental facilities dedicated to the analysis of blade-tip/casing interactions [9,10,11,12,13,14,15,16,11,17], some of them focusing on the interaction phenomenon itself [11,14,15], or on full-scale configurations with the intent to reproduce engine-like conditions [11,17]. Material characterizations have been carried out on different types of abradable coatings [18,13,19] that may be found within turbo-engines.…”

Section: Introductionmentioning

confidence: 99%

Multi-physics numerical simulation of an experimentally predicted rubbing event in aircraft engines

Agrapart

Nyssen

Lavazec

et al. 2019

Journal of Sound and Vibration

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This paper provides new insight on the simulation of blade-tip/casing rubbing events within aircraft engines accounting for thermomechanical effects within the casing. A multi-physics numerical strategy is presented in order to simulate an interaction experimentally witnessed on a full-scale low-pressure compressor. Experimental data are used for an accurate representation of the blade's incursion depth within the abradable coating. This numerical strategy combines Safran's in-house tool for rotor/stator interaction simulations with a finite element based thermomechanical analysis carried out with Ansys. This work underlines the distinct contributions of both dynamical and thermomechanical phenomena in the simulated interaction. Competition between wear and thermal expansions is investigated as well as their consequences on blade dynamics. The proposed numerical strategy yields an accurate description of the interaction phenomenon as wear patterns, critical speed, amplitude growth rate of the blade vibration and temperature levels may be predicted.

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Tribological characterization of a labyrinth-abradable interaction in a turbo engine application

Cited by 24 publications

References 17 publications

Investigating Al-Si base abradable material removal mechanism with axial movement in labyrinth seal system

Investigating Al-Si base abradable material removal mechanism with axial movement in labyrinth seal system

An investigation into the role of specimen geometry when undertaking tribological testing on seal fin components

Multi-physics numerical simulation of an experimentally predicted rubbing event in aircraft engines

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