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. M.T. C a D ract anical charact rticular, conce rtant to accurat mechanical pr tigation. While ase, indirect te ts of both comp ool building lo direct compr he splitting test; ly, results prov der to make a c right © 2018 E review under r ristofaro a , ipartimento di Ar erization of con rning structura ely define the operties is usu the compress sts are usually ression and te cated in Tusca ression test, wh in t is way, sp ided by labora omparison with lsevier B.V. A esponsibility o R. Nudo a, * chitettura – DiD crete is an imp l response of concrete consti ally achieved t ion tests are ea performed, su nsile tests (spli ny. Each core ile the remainin ecimens invol tory tests were strength value ll rights reserve f the CINPAR ng locat , M. Tang A, University of ortant step in t an existing bu tutive law, incl hrough laborat sy to perform, ch as the bendi tting tests) carr was interested g end portions ved in tensile t subjected to a s provided by d. 2018 organizer anelli a , A. Florence, Piazza he knowledge ilding subject uding both the ory tests, most , execution of t ing test or the s ied out on core by both types o , re ulting from ests were abou subsequent re-e formulations pr s D’Ambris Brunelleschi 6, process aimed to severe actio compressive a ly involving co the tensile tests splitting test. T s belonging to f tests: the cen the core prepa t twice those e laboration mai esent in the tec i a , M. De S 50121 Firenze, It at assessing RC ons, such as the and the tensile b res drilled from is more diffic he paper presen structures (bea ntral part of the ration, w re us mployed for th nly concerning hnical and scie tefano a aly existing build seismic ones branch. Definiti the building ult to impleme nted herein con ams and colum s cimen was ed f r the exec he c mpression the tensile stre entific literature ings. s, it is on of under nt. In cerns ns) of s used ution tests. ngth, . Copyright © 2018 Elsevier B.V. All rights reserved. Peer-review under responsibility f the CINPAR 2018 organiz rs Abst Mech In pa impo these inves this c resul a sch for th of th Final in or Copy Peer Keyw M.T. C a D ract anical charact rticular, conce rtant to a curat mechani al pr tigation. While ase, indirect t ts of both comp ool building lo e direct compr he splitting test; ly, results prov der to make a c right © 2018 E review under r ords: Concrete; e ristofaro a , ipartimento di Ar erization of con rning structura ely define the operties is usu the compress sts are usually ression and te cated i Tusca ession test, wh ; in this way, sp ided by labora omparison with lsevier B.V. A esponsibility o xisting buildings R. Nudo a, * chitettura – DiD crete is an imp l response of concrete consti ally achieved t ion tests ar ea performed, su nsile tests (spli y. Each core ile the remainin ecimens invol tory tests were strength value ll rights reserve f the CINPAR ; compression te ng locat , M. Tang A, University of ortant step in t an existing bu tutive law, incl hrough laborat sy to perform, ch as th bendi tting tests) carr was interested g end portions ved in tensile t subjected to a s provided by d. 2018 organizer st; splitting test; anelli a , A. Florence, Piazza he knowledge ilding subject udi both the y tests, most execution f t ing test or the s ried out n core by both types o , resulting from ests were ab u subsequent re-e formulations pr s case study. D’Ambris Brunelleschi 6, process aimed to severe actio compressive a ly involving co he tensile tests splitti g test. T es belonging to f tests: the cen th core prepa t twice thos e laboration mai esent in the tec i a , M. De S 50121 Firenze, It at assessing RC ns, such as the a d the tensile b ores drilled from is more iffic he paper presen structures (b a tral part of the aration, were us mpl yed for th nly concerning chnical and scie tefano a aly existing build seismic ones ranch. Defi iti m the buildi g ult to impleme ted herein con ams and colum e specimen was ed for the exec e compression g the tensile stre entific literatur ings. , it is on of under nt. In cerns ns) of used cution tests. ngth, . Abst Mech In pa impo these inves this c resul a sch for th of th Final in or Copy Peer

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

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

B.V. All rights re CINPAR 2018 o B.V. All rights re CINP R 2018 o 5-2756847; fax: fi.it 5-2756847; fax: fi.it

+39-055-212083 +39-055-212083

2452 Peer-r 2452 Peer-r

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

served. rganizers. served. rganizers.

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

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