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Experimental investigation of the blade/seal interaction

type de publication      article dans une revue internationale avec comité de lecture
date de publication 2013
auteur(s) Baiz Sarah; Fabis Jacky; Boidin Xavier; Desplanques Yannick
journal (abréviation) Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology (Proc IME J J Eng Tribol)
volume (numéro) 227 (9)
  
pages 980 – 995
résumé The use of dynamic seals to reduce the rotor/stator dynamic clearance in jet engine compressor stages leads to a higher rubbing occurrence between each blade and the coated inside of the casing. This article describes the development of a test rig capable to investigate forces and wear at the dynamic blade/seal interaction, in conjunction with blade kinetics. Testing conditions are consistent with those of low-pressure compressor stages of jet engines: high-speed rubbing occurs between a TA6V blade substitute and an aluminium–silicon/boron nitride abradable seal. The platform is instrumented to allow a dynamic measurement of forces and displacements as well as high-speed imaging of the blade/seal interaction zone throughout the experiment. The experiments showed that the blade incursion speed and penetration depth in the abradable seal both affect the amplitude and frequency of blade vibration. The amount and severity of blade incursions into the abradable seal have an impact on seal wear type and intensity, which can in turn increase blade excitation.
mots clés Abradable rig friction wear seal impact vibration
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