PSI - Issue 2_A

ScienceDirect Available online at www.sciencedirect.com Av ilable o line at www.sciencedire t.com ScienceDirect Structural Integrity Procedia 00 (2016) 000 – 000 Procedia Structu al Integrity 2 (2016) 136–143 Available online at www.sciencedirect.com ScienceDirect Structural I tegrity Procedia 00 (2016) 000–000 il l li t . i ir t. tr ct ral I te rit r ce ia ( )

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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. 21st European Conference on Fracture, ECF21, 20-24 June 2016, Catania, Italy Fracture characterization of continuous fibre-reinforced polymer matrix composite laminates by Nuclear Magnetic Resonance *Tarpani J.R. a , Alves C.L. a , Oliveira J.S. a , Vidoto E.L.G. b , Tan ús A. b a Department of Materials Engineering, São Carlos School of Engineering, University of São Paulo, 13590-566, São Carlos-SP,Brazil b Physics and Informatics Department, Physics Institute of São Carlos, University of São Paulo, 13590-566, São Carlos-SP, Brazil Abstract In vitro results obtained from Nuclear Magnetic Resonance Imaging (NMRI) of Continuous Fibre-Reinforced Polymer (CFRP) matrix composite laminates, which had been previously damaged and subsequently immersed in simulated body fluid are provided in this work. Irrefutable evidences are given in rega d to the NMRI techniqu 's a ility to dete t and fully characterize two different fracture types, namely translaminar and delamination, in two distinct classes of solid composites, namely with thermosetting and thermoplastic matrices reinforced with carbon fibers. The study lays and establishes solid foundation for in vivo application of this nondestructive, noninvasive, painless, reliable, non-lethal radiation and fast technique in determining the degree of structural integrity of technologically advanced orthopaedic implants. Furthermore, the residual life estimation and the lifetime extension of human orthopaedic implants are also envisioned by means of this technique. © 2016 The Aut ors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of ECF21. Keywords: Damage and efect; human orthopaedic implant; ondestructive inspection; nuclear magnetic resona ce imaging; polymer matrix fibrous composite. 21st European Conference on Fracture, ECF21, 20-24 June 2016, Catania, Italy *Tarpani J.R. a , l . . a , li i . . a , i t . . . , n . b a e rt e t f teri ls i eeri , rl s c l f i eeri , iversity f l , - , rl s- , r zil b ysics I f r tics e rt e t, ysics I stit te f rl s, iversity f l , - , rl s- , r zil Abstract In vitr r s lts t i fr l r ti s I i ( I) f ti s i r - i f r l r ( ) tri sit l i t s, i r i sl s s tl i rs i si l t fl i r r i i t is r . Irr f t l i s r i i r r t t I t i 's ilit t tect and fully characterize t iff r t fr t r t s, l tr sl i r l i ti , i t isti t l ss s f s li sit s, l it t r s tti t r l sti tri s r i f r it r fi rs. st l s st lis s s li f ti f r i i li ti f t is str ti , i si , i l ss, r li l , -l t l r i ti f st t i i t r i i t r f str t r l i t rit f t l i ll rt i i l ts. rt r r , t r si l lif sti ti t lif ti t si f rt i i l ts r ls isi s f t is t i . Authors. Published by Elsevier B.V. Peer-review under res si ilit f t i tifi itt f . ey r s: a a a efect; a rt ae ic i la t; estr cti e i s cti ; clear a etic res a ce i a i ; l er atri fibrous composite. . t ti Copyright © 2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Peer-review under responsibility of the Scientific Committee of ECF21. © 2016 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of PCF 2016. The xistence of nondestructive and noninvasive techniques for in vivo determination of the structural integrity of human orthopaedic implants made with lightweight composite biomaterials exhibiting outstanding structural efficiency is almost inexistent. In fact, only an acoustic wave-based technique has been proposed by Yang et al . i t f tr ti i i t i f r i i t r i ti f t tr t r l i t rit f rt i i l t it li t i t it i t ri l i iti t t i tr t r l ffi i i l t i i t t. I f t, l ti - t i r t l . Keywords: High Pressure Turbine Blade; Creep; Finite Element Method; 3D Model; Simulation. 1. Introduction 1.1. Initial considerations . . I iti l i ti

* Corresponding author. Tel.:+55(16)33739591 E-mail address: jrpan@sc.usp.br i a t r. el.: ( ) - il ress: jr a sc. s . r rres

2452-3216 © 2016 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of ECF21. e t rs. lis e lse ier . . r-r i r r s si ilit f t i tifi itt f . -

* 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. Copyright © 2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license ( http://creativecommons.org/licenses/by-nc-nd/4.0/ ). Peer review under responsibility of the Scientific Committee of ECF21. 10.1016/j.prostr.2016.06.018