PSI - Issue 11

ScienceDirect Available online at www.sciencedirect.com Av ilable o line at www.sciencedire t.com Sci ceDirect Structural Integrity Procedia 00 (2016) 000 – 000 Procedia Structu al Integrity 11 (2018) 266–273 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2018) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2018) 000 – 000

www.elsevier.com/locate/procedia www.elsevier.com/locate/procedia

www.elsevier.com/locate/procedia

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. XIV International Conference on Building Pathology and Constructions Repair – CINPAR 2018 Public Housing in Florence: Seismic Assessment of Masonry Buildings Marco Tanganelli a , Tommaso Rotunno a , Vieri Cardinali* b and Stefania Viti a a Department of Architecture (DiDA), University of Florence, Sezione Materiali e Strutture, Piazza Brunelleschi 6, 50121 Firenze, Italy b Department of Architecture (DiDA), University of Florence, Via della Mattonaia 14, 50121 Firenze, Italy Florence is known all over the word for its historical and monumental buildings; however, most part of residential buildings have been made in the XX century, and they present all the critical issues proper of recent housing. Florence is one of the first Italian cities to have experienced the public housing. Its public housing population consists mostly of masonry buildings, and it does not comply the requirements provided by the current seismic legislation. This work is aimed at evaluating the seismic performance of a masonry building-type belonging to the public housing population of Florence. A typical public housing intervention, consi ting of 18 masonry buildings, has been assumed as case-study. The seismic input has been described according to the Italian Code prescriptions, by considering the effective soil stratigraphy, and considering the effective mechanical properti es of each layer. The seismic performance of the case-studies has been checked by performing a nonlin ar static analysis. The results are expressed in terms of eismic performance, defined as the ratio between the seismic capacity and th corresp nding dema . The obtained results evidenced the role of the building features on the seismic assessment of the buildings. Copyright © 2018 Elsevier B.V. All rights reserved. Peer-review under responsibility of the CINPAR 2018 organizers Keywords: Public housing interventions; seismic assessment at urban scale; seismic performance of masonry buildings. Copyright © 2018 Elsevier B.V. All rights reserved. Peer-review under responsibility of the CINPAR 2018 organizers XIV International Conference on Building Pathology and Constructions Repair – CINPAR 2018 Public Housing in Florence: Seismic Assessment of Masonry Buildings Marco Tanganelli a , Tommaso Rotunno a , Vieri Cardinali* b and Stefania Viti a a Department of Architecture (DiDA), University of Florence, Sezione Materiali e Strutture, Piazza Brunelleschi 6, 50121 Firenze, Italy b Depar ment of Architecture (D DA), University of Florenc , Via della Mattonaia 14, 50121 Firenze, Italy Abstract Florence is known all over the word for its historical and monumental buildings; however, most part of residential buildings have been made in the XX century, and they present all the critical issues proper of recent housing. Flo ence i one of the first Italian cities to have experien d the public housing. I s public housing population consists mostly of masonry buildings, and it does not omply t e r quir ments provided by the current seismic legislation. This work is ai ed at evalu ting the seismic performance f a asonry building-type belonging to the public housing population of Florenc . A typic l public housing interve tion, consi ti g of 18 masonry uildings, has b en assumed as case-study. The seismic input has been des ribed according to the Italian Code prescriptions, y co sidering th effectiv soil stratigraphy, and cons dering t e eff ctive mechanical properti es of e ch layer. The eism c performance of the case-studi s has been checked by perform a nonlinear stati analysis. Th results are expressed in t r s f seismic perf rman e, defined as the ratio b tw en the seismic capacity and the corresponding demand . The obtaine results evidenced the role of the build g featur s on the seismic as es ent of the buil ings. Copyright © 2018 Elsevier B.V. All rights reserved. Peer- eview under responsibility of the CINPAR 2018 organizers Keywords: Public housing interventions; seismic assessment at urban scale; seismic performance of masonry buildings. © 2016 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of PCF 2016. Florenc is mostly k own for its outstanding historical architectures, which has deserved to become one of the World Heritage Site by UNESCO in 1982. Nevertheless, Florence is made of a large number of “recent” buildings, Keywords: High Pressure Turbine Blade; Creep; Finite Element Method; 3D Model; Simulation. Florence is mostly known for its outstanding historical architectures, which has deserved to become one of the World Herita e Site by UNESCO in 1982. Nev rtheless, Florence is made of a large number of “recent” buildings, Abstract 1. Introduction 1. Introduction

* Corresponding author. Tel.: +351 218419991. E-mail address: amd@tecnico.ulisboa.pt 2452-3216 Copyright © 2018 Elsevier B.V. All rights reserved. Peer-revi w u er responsibility of the CINPAR 2018 organizers. 2452-3216 Copyright © 2018 Elsevier B.V. All rights reserved. Peer-review under responsibility of the CINP R 2018 organizers. * Corresponding author. Tel.: +39 055750327; fax: +0-000-000-0000 . E-mail address: vieri.cardinali@unifi.it * Corresponding author. Tel.: +39 055750327; fax: +0-000-000-0000 . E-mail ad ress: vieri.cardinali@unifi.it

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.2018.11.035