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. a Felipe Alv ,b,c,d Federal Univ ract construction f s. 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The paramet nalysis of vari uction of mass lisson Ro abral d tion, Fortaleza, 6 uring the cons which structur sent work analy ology consiste g/m³ and 2,40 ters analyzed w ance showed th . drigues de 0455-760- Braz truction and se res can be subj zed the behav d on the prepa kg/m³), which ere the compre at the fiber co il ervice ected, ior of ration h were ssive ntent Copyright © 2018 Elsevier B.V. All rights reserved. Peer-review und r responsibility of the CINPAR 2018 organizers a Abst Civil phase so it reinf of 30 expo stren signi Copy Peer Keyw Felipe Alv ,b,c,d Federal Univ ract construction f s. This occurs is important to orced concrete MPa concrete sed at temperat ngth, ultrasonic ficantly influen right © 2018 E review under r ords: Concrete; H es Amanc Oliv ersity of Ceará, P aces an imme b cause fire re study means t with polypropy specimens, w ures of 200 °C pulse velocity ces the compre lsevier B.V. A esponsibility o igh Temperatur io a , Maria eira Dias c, ost Graduate Pro nse challenge presents o e of hat contribute t lene fibers wh ith the addition , 400 °C, 600 (UPV) and the ssive strength, ll rights reserve f the CINPAR es; Polypropylen igh tem Fabíola de * , Antônio gram of Structur in consequence the m st s ver o the mitigatio en exposed to h of three fiber °C and 800 °C mass reductio but does not oc d. 2018 organizer e Fibers; Spalling al Engineering a of fire damag e envir nment n of these prob igh temperatur r cont nts (1,20 f r 30 minute n factor. The a cur for the r d s . Rafael b , A ezerra Ca nd Civil Construc es occurred d al condition t lems. The pre es. The method kg/m³, 1,80 k s. The paramet nalysis of vari uction of mass lisson Ro bral d tion, Fortaleza, 6 uring the cons which structur sent work analy dology consiste g/m³ and 2,40 ers analyzed w iance showed th . drigues de 0455-760- Braz truction and se e can be subj yzed the behav d on t e prepa kg/m³), which ere the compre at the fiber co il rvice cted, ior of ration h were ssiv ntent Abst Civil phase so it reinf of 30 expo stren signi Copy Peer Keyw with poly perature Carvalho Eduardo B

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

* C E Corresponding aut -mail address: ro orresponding aut E-mail ad ress: ro * C E

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

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