PSI - Issue 11

ScienceDirect Available online at www.sciencedirect.com Av ilable online at ww.sciencedire t.com Sci nceDirect Structural Integrity Procedia 00 (2016) 000 – 000 Procedia Structu al Integrity 11 (2018) 258–265 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 The influence of the joint thickness on the adhesion between CFRP reinforcements and masonry arches Mario Fagone a* , Tommaso Rotunno b , Ernesto Grande c , Elisa Bertolesi d , Gabriele Milani e a Department of Civil and Environmental Engineering, University of Florence, Via di S. Marta, 3 - 50139 Florence, Italy b Department of Architecture, University of Florence, Via della Mattonaia, 8 - 50121 Florence, Italy c Departm nt of Sustai ability Engineering, University Guglielmo Marconi, Via Plinio 44, 00193 Rome (Italy) d ICITECH, Universitat Politècnica de Valencia, Camino de Vera s/n 46022, Valencia (Spain) e Department of A chitecture, Built environment a d Construction engineering (ABC), Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133, Milan (Italy) Abstract The effectiveness of Carbon Fiber Reinforced Polymers (CFRP) reinforcements bonded to masonry structures is demonstrated by the several interventions made on existing buildings as well as by the numerous studies presented in the scientific literature. In practical strengthening interventions, CFRP sheets are being used to reinforce both plane and curved structural elements. Contrariwise, research in the scientific literature are mainly devoted to the analysis of the effectiveness of such reinforcements bonded on plane surfaces. For this reason, the experimental program described in this paper concerns the analysis of the mechanical behavior of portion of masonry arches reinforced by CFRP sheets. The experimental results allowed to analyze the effectiveness of such reinforcements applied at intrados or extrados, loaded by actions tangent to an end of the reinforcement itself. The influence of the mortar joints thickness on the performance of such reinforcements has been also analyzed in the experimental program. Copyright © 2018 Elsevier B.V. All rights reserved. Peer-review under responsibility of the CINPAR 2018 organizers 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 The influence of the joint thickness on the adhesion between CFRP r inf rcements and masonry arches Mario Fagone a* , Tommaso Rotunno b , Ernesto Grande c , Elisa Bertolesi d , Gabriele Milani e a Department of Civil and Environmental Engineering, University of Florence, Via di S. Marta, 3 - 50139 Florence, Italy b Department of Architecture, University of Florence, Via de la Mattonaia, 8 - 50121 Florence, Italy c Departmen of Sustainab lity Engineering, University Gugl elmo Marconi, Via Plinio 44, 00193 Rome (Italy) d ICITECH, U iversitat Politècnica de Valencia, Camino de Vera s/n 46022, Valencia (Spain) e Department of Architecture, Built e vironment and Construction engineering (ABC), Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133, Milan (Italy) Abstract The effectiveness of Carbon Fiber Reinforced Polymers (CFRP) reinforcements bonded to masonry structures is demonstrated by the sev ral int rventions made on existing buildings a well as by the nu erous studies presented in the scientific literature. In practical strengthe ing interventions, CFRP sheets are being used to reinforce both lan and curved structural elem nts. Contrariwise, research in the scientific literature are mainly devoted to the analysis of the effectiveness of such reinforcements b nded on plane surfaces. For this reason, the experimental program described in t is paper concerns the analysis of the mechanical behavior of portion of masonry arches reinforced by CFRP sh ets. The experimental results allowed to analyze th effectiveness of such reinforcements applied at intrados or extrados, loaded by actions tangent to an end of the reinforcement itself. The influence of the mortar joints thickness on the performance of such reinforcements has b en also analyzed in the experimental program. Copyright © 2018 Elsevier B.V. All rights reserv d. Peer-review under responsibility of the CINPAR 2018 organizers

© 2016 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of PCF 2016. Keywords: Type your keywords here, separat d by semicolons ; Keywords: Typ yo r keywords her , separated by semicolons ;

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

* 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 2756831; fax: +39 055 2758800. E-mail address: mario.fagone@unifi.it * Corresponding author. Tel.: +39 055 2756831; fax: +39 055 2758800. E-mail ad ress: mario.fagone@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.2018.11.034