Enhancement of an experimental method to measure accurately the evolution of forces during short-lived interactions: Application to blade-abradable material contacts in turbomachines. (February 2017)

• Record Type: Journal Article
• Authors: Vincent, J.; Philippon, S.; Cappella, A.; Meriaux, J.; Selezneff, S.
• Is Part Of: Measurement. Volume 98(2017)
• Page Start: 167
• Page End: 178
• Publication Date: 2017-02
• Subjects: Dynamic force measurement -- High speed interaction -- Dynamic calibration -- Abradable materials; Weights and measures -- Periodicals; Measurement -- Periodicals; Measurement; Weights and measures; Periodicals; 530.8
• DOI: 10.1016/j.measurement.2016.11.034
• Languages: English
• ISSNs: 0263-2241

Abstract

Highlights: Upgraded dynamometer device for short-lived interaction' studies. Measurement of the three components of the high-speed interaction force. Taking into account the structural dynamics to extend the available bandwidth. Very good agreement between the corrected forces and the post-mortem observed wear. Abstract: Thermal sprayed abradable materials are frequently used as seal linings between the casing and the blades of aircraft engines to improve safety and reduce fuel consumption. In this paper we report about the enhancements of an experimental bench developed by our group in order to fully characterize the time-evolution of the three-dimensional force occurring during high-speed interactions between an abradable coating and a titanium tip. A new stiffer testbed associated to a three-axis piezoelectric force sensor was designed to ensure a constant incursion depth during the interaction process. The newly designed device was associated with a three-dimensional implementation of the formerly developed dynamic compensation approach. As a validation of the experimental method, a measure of the wear occurring during high-speed contacts have been performed. The results have been correlated to the measured force signals showing the validity of such a full three-dimensional dynamic compensation.