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. tr Stepanek a ract article deals w tures: degradat alkaline enviro nts by reductio xperimental re sed in concrete nement, which ibed. At the te ng, whereas the ined results wi elp to optimal right © 2018 E review under r k a, *, Ondre Brno University ith the two cu ion of GFRP re nment of conc n of their mech sults of cyclic were tested. A prevents the f ested stress leve fibres are like ll allow to defin design of GFR lsevier B.V. A esponsibility o of Technology, F rrent problems inforcement ca rete with a pH anical characte loading on fa t the tested str ibers from a br ls, considerabl ly to remain in e the reliabilit P reinforced co ll rights reserve f the CINPAR ture and rantisek G Iva Rozs aculty of Civil En s of determinin used by alkalin higher than 12 ristics, resultin tigue life of G ess levels, the oom-like failur e matrix or ma tact. y coefficients f ncrete structur d. 2018 organizer g long-term st ne environment 2.0 affects the g g in a decrease FRP bars are concrete has a e mode. Two d trix/fiber inter or long term b es. s loading ka Bodnar ri 95, Brno, 602 0 trength of non- and cyclic load lass fibres deg in the tensile s presented. The positive effec ifferent S-N cu face damage oc ehavior of GFR ova a , Vojt 0, Czech Republ metallic reinfo ing. gradative, wher strength of the w specimens of ct on the fatigue rves for bare a curs at the beg P reinforceme ech Kostih ic rcement in con reas this degrad whole composi bare bars and life of FRP d nd encased ba inning of the c nt more precis a a , crete ation te. bars ue to rs are yclic ely. It Copyright © 2018 Elsevier B.V. All rights reserved. Peer-review under responsibility of the CINPAR 2018 organizers Pe Abst The struc The prese An enca confi descr loadi Obta will h Copy Peer tr Stepanek a ract article deals w tures: degradat alkaline enviro nts by reductio xperimental re sed in concrete nement, which ibed. At the te ng, whereas the ined results wi elp to optimal right © 2018 E revi w under r a, *, Ondre Brno University ith the two cu ion of GFRP re nment of conc n of their mech sults of cyclic were tested. A pr vents the f sted stress l ve fibres are like ll allow to defin design of GFR lsevi r B.V. A sponsibil ty o of Technology, F rrent problems inforcement ca rete with a pH anical ch racte loading on fa t the tested str ibers from a br ls, considera l ly to remain in e the reliabilit P reinforced co ll rights serve f the CINPAR ture and rantisek G Iva Rozs aculty of Civil En of determinin aused by alkali higher than 12 ristics, resultin tigue lif of G ess levels, the room-like failur e atrix or ma tact. y coefficients f ncrete structur d. 2018 organizer g long-term st e environ ent 2.0 affects the g ng in a decrease FRP bars are concrete has a e mod . Two d trix/fiber inter or long term b es. s loading ka Bodnar ri 95, Brno, 602 0 ength of non t a d cyclic load lass fibres deg in the tensile s present d. The positive effec ifferent S-N cu face damage oc ehavior of GFR ova a , Vojt 0, Czech Republ metallic reinfo ing. radative, wher strength of the w e specimens of t on the fatigue rves for bare a curs at the beg P reinforceme ech Kostih ic rcement in con eas this degrad whole composi f bar bars and life of FRP d and encased ba inning of the c nt more precis a a , crete ation te. bars ue to rs are yclic ely. It Pe Abst

The struc The prese An e enca confi descr loadi Obta will h Copy Peer Keyw

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© 2016 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of PCF 2016. ords: GFRP rein foncement; alkal ine caused degra dation o GFRP; c yclic loading; S- Keyw

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: st orresponding aut E-mail ad ress: s

41147848. tbr.cz 41147848. tbr.cz

B.V. All rights re CINPAR 2018 o B.V. All rights re CINP R 2018 o

served. rganizers. served. rganizers.

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

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