PSI - Issue 11

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ScienceDirect Available online at www.sciencedirect.com Av ilable o line at www.sciencedire t.com Sci nceDirect Structural Integrity Procedia 00 (2016) 000 – 000 Procedia Structu al Integrity 11 (2018) 394–4 1 Structural Integ rity Procedia 00 ( 2018) 000–000 Structural Integ rity Procedia 00 ( 2018) 000–000

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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 Departm ract orrosion of ste ks lead to a los he formation o ing, to reductio corrosion start sion level and exposed steel ticular in seis /flexure) could rials allow rec atically the vu l if the struct ention is aime right © 2018 E review under r Anton ent of Structure el in reinforced s of performan f corrosion pr n of concrete ing from the d the evaluation elements, yield mic conditions occur. The la vering some lnerability of t ural retrofit in d to recover the lsevier B.V. A esponsibility o io Bossio a , for Engineering concrete struc ce during the oducts lead to cross section r esign phase, ho of actual globa ing to brittle fa , the structure st phase of the of the bending he structures. tervention is d original geom ll rights reserve f the CINPAR Gian Pier and Architecture tures surely re service life of t reduction of b esulting in a re wever in prese l structural cap ilures in the m is not able to e study is on th capacity of th This is particu esigned to hav etry of the elem d. 2018 organizer structure o Lignola a , University of N presents the ma he structure. T ond between st duction of stru nce of real ex acity. The mos ost stressed ele exploit its duct e stru tural ret he structural el lar true for se e a negligible ents with a red s es *, Andrea aples, Via Claud in form of deg he reduction o eel and concre ctural capacity isting structure t critical corros ments, generati ility, since lim rofit by using H ements and ca ismic vulnerab impact on th uced cost and Prota a io, 21, Naples 80 radation. Carb f the cross sect te, to concrete . The structura s the first step sion involves th ng unexpected ited ductile fai igh Performan n increase thei ility, since the e structure. In impact on the f 127, Italy onation and ch ion of the stee e cover crackin al engineer nee p is the evaluati e stirrups, bein structural colla lures (i.e. com a ce Concretes. ir ductility, red strength reco fact the consi fruition. loride l bars g and eds to on of g the pses. bined Such ucing ver is dered Copyright © 2018 Elsevier B.V. All rights r served. Peer-review under responsibility of the CINPAR 2018 organizers Abst The c attac nd t spall face corro most In pa shear mate dr m partia interv Copy Peer a Departm ract orrosion of ste ks lead to a los he formation o ing, to reducti corrosion start sion level and exposed steel rticular in s is /flexure) could rials allow rec atically the vu l if the struct ention is aime right © 2018 E review under r Anton ent of Structure el in reinforced s of performan f corrosi n pr n of concrete i g from th d the evaluation elements, yield smic conditions o cur. The la overing some ln rability of t ural retrofit in d to recover the lsevier B.V. A esponsibility o io Bossio a , for Engineering concrete struc ce during the oducts lead to cross section r esign phase, ho of actual globa ing to brittle f , the structure st phase of the of t e bending he structures. tervention is d original geom ll rights reserve f the CINPAR Gian Pier and Architecture tures surely re service life of t redu tion of b esulting in a re wever in pres l structural cap ilures in the m is not able to study is on th g capacity of th This is particu esigned to hav try of the elem d. 2018 organizer structure o Lignola a , University of N presents the ma he structure. T ond between st duction of stru nce of real ex acity. The mos most stressed ele exploit its duct structural ret he structural l ular true for se e a negligibl ents with a red s es *, Andrea aples, Via Claud in form of deg he reduction o e l and concre ctural capacity isting structure t critical corros ments, generati ility, since lim rofit by using H ements and ca ismic vulnerab i pact on th uced ost and Prota a io, 21, Naples 80 radation. Carb f the cross sect te, to c ncr te . The structura s the first step ion involves th ing u expected ited ductile fai igh Perform n n increase thei bility, since the e structure. In impact on the f 127, Italy onation and ch ion of the stee cover crackin r l engineer nee is the evaluati e stirrups, bein struct ral colla lures (i.e. m a ce Concretes. ir ductility, red e strength reco fact the consi ruition. loride l bars g and ds to ion of g the pses. bined Such ucing ver is dered Abst The c atta and t spall face corro most In pa sh ar mate dram partia interv Copy Peer Keyw

ords: Structural a ords: Structural a

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

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

1-7683492; fax: 1-7683492; fax:

+39-081-768542 +39-081-768542

1. 1.

2452 Peer-r 2452 Peer-r

3216 Copyright evi w u er resp 3216 Copyright eview under resp

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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