PSI - Issue 11

ScienceDirect Available online at www.sciencedirect.com Av ilable o line at www.sciencedire t.com ScienceDirect Structural Integrity Procedia 00 (2016) 000 – 000 Procedi Structural Integrity 11 8 52–59 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

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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. Copyright © 2018 Elsevier B.V. All rights reserved. Peer-revi w under responsibility of the CINPAR 2018 organizers XIV International Conference on Building Pathology and Constructions Repair – CINPAR 2018 Energy retrofit solutions for heritage buildings located in hot-humid climates Fabiana Silvero a,b *, Sergio Montelpare a , Fernanda Rodrigues b , Enrico Spacone a , Humberto Varum c a University Gabrielle D´Annunzio, Engineering and Geology Department, 42 Viale Pindaro, 65127 Pescara, Italy. b RISCO, University of Aveiro, Civil Engineering Department, C mpus Universitario Santiago, 3810-193 Aveiro, Portugal. c CONSTRUCT-LESEFEUP, University of Porto, Engineering Department, Rua Dr. Roberto Frias, 4200-465, Porto, Portugal. Abstract Nowadays, increasing buildings’ energy efficiency represents an opportunity t o improve their thermal performance and adapting them to the global warming effects. However, finding the most suitable intervention for heritage buildings represents a challenge since the best energy retrofit solution has also to achieve the preservation of the building’s original characteristics. This work seeks to evaluate the thermal performance of a dwelling located in the Historic Centre of Asunción. Subsequently, several retrofitting solutions for the building envelope were assessed to determine the most efficient solution for the building and climate under analysis. As results, energy-efficient solutions guaranteeing optimal conditions of habitability are proposed. Copyright © 2018 Elsevier B.V. All rights reserved. Peer-review under responsibility of the CINPAR 2018 organizers Keywords: Energy Efficiency; Thermal comfort; Heritage buildings; hot-humid climates. 1. Introduction Currently, climate change (CC) is one of the biggest challenges the world is facing. In the last seventeen years, humankind has lived 15 of the warmest years on record (NOAA, 2017). The energy sector is one of the main contributors to global emissions, and reducing the energy demand in end-use sectors represents a key mitigation strategy (Edenhofer et al., 2014). In 2010, the buildings sector absorbed about 32% of total global final energy XIV International Conference on Building Pathology and Constructions Repair – CINPAR 2018 Energy retrofit solutions for heritage buildings located in hot-humid climates Fabiana Silvero a,b *, Sergio Montelpare a , Fernanda Rodrigues b , Enrico Spacone a , Humberto Varum c a University Gabrielle D´Annunzio, Engineering and Geology Department, 42 Viale Pindaro, 65127 Pescara, Italy. b RISCO, University of Aveiro, Civil Engi eering Departm nt, Campus Universitario Sant ago, 3810-193 Avei o Portugal. c CON TRUCT-LESEFEUP, University of Porto, Engineering Dep rtm nt Rua Dr. R berto Frias, 4200-465, P rto, Portugal. Abstract Nowadays, incr asing buildings’ energy efficie cy represents an opportunity t o improv their thermal performance and adapting them to the glob l warming effects. How ver, finding the most suitable i tervention f r heritage buildings represents a challenge since the best energy retrofit solution has also to achieve the preservation of the building’s original characteristic . T is work eeks to evaluate the thermal perf rmance of a dwelling locat d in he Historic Centre of Asunción. Subsequently, everal r trofitting solutions for the building envelope were assessed to d termine the m st efficient solutio for the building and climate under analy is. As results, nergy-efficient solutions guaranteeing optimal conditions of habitability are proposed. Copyright © 2018 Elsevier B.V. All rights reserved. Peer-review under responsibility of the CINPAR 2018 organizers Keywords: Energy Efficiency; Thermal comfort; Heritage buildings; hot-humid climates. 1. Int oduction Currently, climate change (CC) is one of the biggest challenges the world is facing. In the last seventeen years, humanki d has lived 15 of the warmest years on r cord (NOAA, 2017). The ener y sector is one of the main contributors to global emissions, and reducing the energy demand in end-use sectors represents a key mitigatio strategy (Edenhofer et al., 2014). In 2010, the buildings sector absorbe about 32% of total global final energy © 2016 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of PCF 2016. Keywords: High Pressure Turbine Blade; Creep; Finite Element Method; 3D Model; Simulation.

* Corresponding author. Tel.: +39-388-879-7783 E-mail address: fabiana.silvero@unich.it * Corresponding author. Tel.: +39-388-879-7783 E-mail ad ress: fabiana.silvero@unich.it

* 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.

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.2018.11.008