PSI - Issue 11

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XV Portuguese Conference on Fracture, PCF 2016, 10-12 February 2016, Paço de Arcos, Portugal Thermo-mechanical modeling of a high pressure turbine blade of an airplane gas turbine engine P. Brandão a , V. Infante b , A.M. Deus c * a Department of Mechanical Engineering, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1, 1049-001 Lisboa, Portugal b IDMEC, Department of Mechanical Engineering, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1, 1049-001 Lisboa, Portugal c CeFEMA, Department of Mechanical Engineering, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1, 1049-001 Lisboa, Portugal Abstract During their operation, modern aircraft engine components are subjected to increasingly demanding operating conditions, especially the high pressure turbine (HPT) blades. Such conditions cause these parts to undergo different types of time-dependent degradation, one of which is creep. A model using the finite element method (FEM) was developed, in order to be able to predict the creep behaviour of HPT blades. Flight data records (FDR) for a specific aircraft, provided by a commercial aviation company, were used to obtain thermal and mechanical data for three different flight cycles. In order to create the 3D model needed for the FEM analysis, a HPT blade scrap was scanned, and its chemical composition and material properties were obtained. The data that was gathered was fed into the FEM model and different simulations were run, first with a simplified 3D rectangular block shape, in order to better establish the model, and then with the real 3D mesh obtained from the blade scrap. The overall expected behaviour in terms of displacement was observed, in particular at the trailing edge of the blade. Therefore such a model can be useful in the goal of predicting turbine blade life, given a set of FDR data. Copyright © 2018 Elsevier B.V. All rights reserved. Pe r-r view und r responsibility of the CINPAR 2018 organizers Abst In re mode due t expe reinf expe GFR by th beam Copy Peer Keyw ract cent years one rn structures. R o loading or co rimentally anal orced polymer riments on RC P rod assuming e dynamic exp elements. A c right © 2018 E review under r ords: NSM techn of the most i einforced con rrosion of rein yzed under be (GFRP) rod. beams: experi free-free ends erimental tests omparison of e lsevier B.V. A esponsibility o ique; CFRP rods mportant duty crete is a relativ forcement. In nding loading A nondestruct mental vibratio and hinged en are shown and xperimental an ll rights reserve f the CINPAR ; Vibration; Dam of civil engine ely modern m this paper unda with and with ive method of n tests have be ds. In the paper the changes of d theoretical re ed. 2018 organizer age; FE Modelli eers is to defin aterial of const maged and dam out strengthen control based een c rried out the envelope natural freque sults is shown rs ng. e methods of r ruction and it is aged reinforc ing by near su on vibration t on RC beams of Frequency R ncy values are and discussed. ehabilitation b often damage ed concrete (R rface mounted tests has been without and w esponse functi correlated to th oth for histori d both with cra C) beams have (NSM) glass utilized durin ith strengtheni ons (FRFs) obt e damage deg c and cking been fiber g the ng by ained ree of Abst In re mode due t expe reinf e e GFR by th beam Copy Peer Keyw ract cent years one rn structures. R o loading or co rimentally anal orced polymer ri e ts on RC P ro assuming e dynamic exp elements. A c right © 2018 E review under r ords: NSM techn troduction mong the me of the most i einforced con rrosion of rein yzed under be (GFRP) rod. beams: experi free-free ends erimental tests omparison of e lsevier B.V. A esponsibility o ique; CFRP rods mportant duty crete is a rel tiv forcement. In nding loading A nondestruct mental vibratio nd hing d en are shown and xperimental an ll rights reserve f the CINPAR ; Vibration; Dam of civil engine ely modern m this paper unda with and with tive method of n tests have be ds. In the paper the changes of d theoretical re d. 2018 organizer age; FE Modelli ers is to defin aterial of const amaged and dam out strengthen control based en c rried out the envelope f natural freq e sults is shown s ng. e methods of r ruction and it is aged reinf rc ing by near su on vibration on RC beams of Frequ ncy R ency values are and discussed. ehabilitation b often damage ed concrete (R rface mounted tests has been without and w esponse functi correlated to th oth for histori d both with cra C) beams have (NSM) glass utilized durin ith strengtheni ons (FRFs) obt e damage deg c and cking been fiber g the ng by tained ree of

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Keywords: High Pressure Turbine Blade; Creep; Finite Element Method; 3D Model; Simulation.

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served. rganizers. served. rganizers.

* Corresponding author. Tel.: +351 218419991. E-mail address: amd@tecnico.ulisboa.pt

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