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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. Peer-review under responsibility f the CINPAR 2018 organizers P Abst In th react hypo at ev maso expe Copy Peer Keyw ract is paper, the ion forces a thesis of finit ery step of im nry arch wit rimental test right © 2018 E review under r ords: Masonry ar Principle of nd the thrust e displaceme posed spring h no-horizon was conducte lsevier B.V. A esponsibility o ch, limit analysi Virtual Wor line of ma nt, an iterativ ing settlemen tal springing d to validate t ll rights reserve f the CINPAR s, settlement spri k was applied sonry arch w e algorithm w t. In addition settlement h he results obt ed. 2018 organizer nging, experimen rille Deni Engineering, Vi to evaluate ith no-horizo as perf rmed , the ultimate as been dete ained by the a s tal test, failure a s Tetougue a Marzolo 9, 351 the collapse ntal springin with th aim displacement rmined by th nalytical met nalysis mechanism s ng settlement to describe th causing the c e iterative sc hod. hape, the su t. Considering he arch mecha omplete failu heme. Finally pport the nism re of , an Abst In th react hypo at ev maso expe Copy Peer Keyw ract is paper, the ion forces a thesis of finit ery step of im nry arch wit rimental test right © 2018 E review under r ords: Masonry ar Principle of nd the thrust e displaceme posed spring h o-horizon was conducte lsevier B.V. A esponsibility o ch, limit analysi Virtual Wor line of ma nt, an iterativ ing settle en t l springi d to validate t ll rights reserve f the CINPAR s, settlement spri k was applied sonry arch w e algorithm w t. In addition settlement h he results obt d. 2018 organizer nging, exper men to evaluate ith no-horizo as performed , t e ultimate has been dete ained by the a s tal test, failure a the collapse ntal springin with the aim displacement rmined by th nalytical met nalysis mechanism s ng settlement to describe th t causing the c e iterative sc hod. hape, the su . Considering e arch mecha complete failu cheme. Finally pport the nism re of , an

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© 2016 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of PCF 2016.

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

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

2452-3216 © 2016 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of PCF 2016.

2452-3216 Copyright  2018 Elsevier B.V. All rights reserved. Peer-review under responsibility of the CINPAR 2018 organizers 10.1016/j.prostr.2018.11.056