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. 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Peer-review und r responsibility of the CINPAR 2018 organizers Abst A 66 part doub vertic mean defin therm atten the a was o cr ck Copy Peer Keyw Dept. of ract m-tall masonry of a co pany le wall u to a al ribs and ho s of a direct su ition of future mal changes ind tion is focused nisotropic stren perational. Ap s can be exclud right © 2018 E review under r ords: chimney; m Civil and Environ chimney, dati town locate in certain height rizontal diaphr rvey. Aim of th repair interven uced by comb on thermal str gth of brickwo propriate repai ed. The conclu lsevier B.V. A esponsibility o asonry; cracks; ng back to the northern Italy , and is single agms. The chi is research is t tions. A detai ustion fumes ains. The prese rk is tak n into rs can ensure th sion of this res ll rights reserve f the CINPAR finite elements; t Bamonte, ing. Politecnico end of the XIX , which is incl walled in the re mney exhibits the identificati led finite elem are taken into nce of most cr account. Acco t the disused search can b ex d. 2018 organizer hermal strain. A. Talierc di Milano, piazz century, is ana uded in the UN emaini g part. s several faults n of the possib ent model of t account. After ks can be ac rdingly, most c chimney will r tended to othe s io* a Leonardo da V lyzed. The chi ESCO World In the lower p (cracks, tilt), w le origin of the he chimney is ex ludi g that tually motivate racks are likely emain safe, as t r coeval chimn inci 32, 20133 M mney is no lon H ritage List. art, the two wa hic were acc cracks, which developed. Bo wind can hav d by thermal e to hav form the developmen neys of similar g ilan, Italy ger in service, The chimney lls are con ct urately det t can be helpful th wind action e originated cr effects, provide d when the chi nt of new, signi e metry. and is has a ed by in the s and acks, d that mney ficant Abst A 66 part doub vertic mean defin therm atten the a was o crack Copy Peer Keyw

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

2452 Peer-r 2452 Peer-r * C E * C E 3216 Copyright evi w u er resp 3216 Copyright eview under resp Corresponding aut -mail address: al orresponding aut E-mail ad ress: al

B.V. All rights re CINPAR 2018 o B.V. All rights re CINP R 2018 o -2399-4241; fax olimi.it -2399-4241; fax olimi.it

: +39-02-2399-43 : +39-02-2399-43

00. 00.

served. rganizers. served. rganizers.

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

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