PSI - Issue 11

ScienceDirect Available online at www.sciencedirect.com Av ilable o line at www.sciencedire t.com cienceDirect Structural Integrity Procedia 00 (2016) 000 – 000 Procedia Structu al Integrity 11 (2018) 169–176 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2018) 000–000 Available online at www.sciencedirect.com ScienceDirect Structural I tegrity 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. XIV International Conference on Building Pathology and Constructions Repair – CINPAR 2018 Seismic vulnerability of historic masonry buildings: a case study in the center of Lucca Sonia Boschi a, *, Andrea Borghini a , Barbara Pintucchi a , Nicola Zani a a DICEA, Via di Santa Marta 3, Flore ce 50139, Italy The Italian territory, as that of many other European countries, is currently defined as a total seismic territory. The cultural heritage is generally made of historic constructions of load-bearing masonry buildings, organized in complex aggregates. These structures, due to their intrinsic vulnerability and their reciprocal interactions, are particularly susceptible to local or global collapses in case of seismic loading. This paper aims at analyzing the seismic vulnerability of the masonry aggregate of Civitali Insitut, located in the city center of Lucca (Italy). After a description of the complete knowledge process done, based also to partially destructive onsite tests of dou le flat-jacks, the static and seismic assessment of the complex has been discussed analyzing both local mechanisms and global behavior by assuming different structural configurations according to the level of connections between structural elements. Particular attenti n h s been paid to the study of th vaults covering the ground floor. The analyses have highlighted some critical issues typical of that type of building structures such as the weak walls' connections and the poor quality of the masonry type. Copyright © 2018 Elsevier B.V. All rights reserved. Peer-review under responsibility of the CINPAR 2018 organizers Keywords: masonry aggregate; statc and seismic assessment. Copyright © 2018 Elsevier B.V. All rights reserved. Peer-review und r responsibility of the CINPAR 2018 organizers XIV International Conference on Building Pathology and Constructions Repair – CINPAR 2018 Seismic vulnerability of historic masonry buildings: a case study in the center of Lucca Sonia Boschi a, *, Andrea Borghini a , Barbara Pintucchi a , Nicola Zani a a DICEA, Via di Santa Marta 3, Florence 50139, Italy Abstract The Italian territory, as that of many other European countries, is currently defined as a total seismic territory. The cultural heritage is generall made of historic c nstructions of load-bearing masonry buildings, organized in complex aggregates. These structures, due to their intrinsic vulnerability and their reciprocal interactions, are particularly susceptible to local or global collapses in cas of s ismic loadi g. This aper aims at analyzing the seismic vulnerability of the masonry aggregate of Civitali Insitut, located in the city center of Lucca (Italy). After a description of the complete knowledge pr cess done, based also to partially destructive onsite tests f double fl t-jacks, the stati and seismic assessment of th complex has been discussed analyzing both local mechanisms and global behavior by assuming different structural co figurations according to the level of con ectio s between structural elements. Particular ttention has been paid to the study of the va lts covering the round floor. The analyses have highlighted some critical issues typical of that type of building structures such as the weak walls' connections and the poor quality of t e masonry type. Copyright © 2018 Elsevier B.V. All rights reserved. Peer-review under responsibility of the CINPAR 2018 organizers Keywords: masonry aggregate; statc and seismic assessment. 1. Introduction The static and seismic a s ssment of ancient masonr y buildings represents a significant topic for sever al European Countries, characterized by high seismic hazard and architectural heritages generally consisting of inadequate seismic resistant buildings. Historical constructions are largely made of load-bearing masonry structures organized © 2016 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of PCF 2016. The static a seismic assessment of a c ent masonr y buildings represents a significant topic for sever al European Countries, characterized by high seismic hazard and architectural heritages generally consisting of inadequate seismic resistant buildings. Historical constructions are largely made of load-bearing masonry structures organized Keywords: High Pressure Turbine Blade; Creep; Finite Element Method; 3D Model; Simulation. Abstract 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.: +39-055-278879; fax: +39-055-278800. E-mail address: sonia.boschi@unifi.it * Corresponding author. Tel.: +39-055-278879; fax: +39-055-278800. E-mail ad ress: sonia boschi@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.2018.11.023