PSI - Issue 12

ScienceDirect Available online at www.sciencedirect.com Av ilable o line at ww.sciencedire t.com ienceDirect Structural Integrity Procedia 00 (2016) 000 – 000 P o edia Structural Int gr ty 12 (2018) 1–2 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. © 2018 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/3.0/) Peer-review under responsibility of the Scientific Committee of AIAS 2018 International Conference on Stress Analysis. AIAS 2018 International Conference on Stress Analysis Editorial Dario Amodio a , Nicola Bonora b, *, Gabriele Arcidiacono c , Luigi Bruno d , Francesco Frendo e , Giuseppe Mirone f , Francesco Iacoviello b a Università Politecnica delle Marche, via Brecce Bianche 2, 60131 Ancona, Italy b Università di Cassino e del Lazio Meridionale, via G. Di Biasio 43, 03043 Cassino, Italy c Università “Guglielmo Marconi”, Via Plinio 44, 00193 Rome, Italy d Università della Calabria, Via P. Bucci, 87036, Arcavacata di Rende (CS), Italy e Università di Pisa, Largo Lucio Lazzarino, 2, 56122 Pisa, Italy f Università di Catania, Via S. Sofia, 64, 95123 Catania, Italy © 2018 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/3.0/) Peer-review under responsibility of the Scientific Committee of AIAS 2018 International Conference on Stress Analysis. The Italian Association for Stress Analysis (AIAS) was founded in 1971 by researchers from academia, research cente s and indust y. AIAS was intended as a commu ity wh re to discuss, share and develop scientific knowledge related to all technical aspects of stress analysis. In the years, from an initial focus on experimental techniques, AIAS contributed considerably to the development of modern numerical methods and computational techniques for the mechanical engineering design. In 2015, AIAS turned in the Italian Scientific Society of Mechanical Engineering Design. Today, AIAS is an institutional partner that supports the instances from academia in subject area of the mechanical engineering design. Every year, AIAS organizes a technical conference offering the possibility to present research updates, share new ideas and foster collaborations. The AIAS conference has become a fundamental event for all those int rested in current develo ments in mechanical e gineering design and stress analysis, where t meet researchers, t sting equipment and software developers. The 47th AIAS Conference edition was held in Villa S. Giovanni (RC), Italy. Over 140 were presented as oral presentations and a selection has b en reviewed and collected to be published in this volume. These selected contributions cover diverse areas of mechanical engineering design such as fatigue, fracture and damage, numerical AIAS 2018 International Conference on Stress Analysis Editorial Dario Amodio a , Nicola Bonora b, *, Gabriele Arcidiacono c , Luigi Bruno d , Francesco Frendo e , Giuseppe Mirone f , Francesco Iacoviello b a Università Politecnica delle Marche, via Brecce Bianche 2, 60131 Ancona, Italy b Università di Cassino e del Lazio Meridionale, via G. Di Biasio 43, 03043 Cassino, Italy c Università “Guglielmo Marconi”, Via Plinio 44, 00193 Rome, Italy d Università della Calabria, Via P. Bucci, 87036, Arcavacata di Rende (CS), Italy e Università di Pisa, Largo Lucio Lazzarino, 2, 56122 Pisa, Italy f Università di Catania, Via S. Sofia, 64, 95123 Catania, Italy © 2018 The Authors. Published by Elsevier B.V. This is an ope access article under t e CC BY-N -ND license (http://creativecomm s.org/licenses/by-nc-nd/3.0/) Peer-review under responsibility of the Scientific Committee of AIAS 2018 International Conference on Stress Analysis. The Italian Associati for Stress Analysi (AIAS) was founded in 1971 by researchers from academia, research c nters and industry. AIAS was int nded as a community where to d scuss, share a d d velop scientific knowledge rela ed to all technical aspects of stress analysis. In the years, from an initial focus on experime tal techniques, AIAS contributed considerably to the development of modern numerical methods and computational techniques for the mechanical engineering desig . In 2015, AIAS turned in the Italian Scientific Society of Mechanical Engineering D sign. Today, AIAS is an i stitutional partner that supports t e instances from academia in subject area of the mecha ical engineering design. Every year, AIAS org nizes a technical offering the possibility to pres rese rch updates, share ew ideas and foster collaborations. The AIAS conference has b come a fundam ntal ev n for ll tho e inter sted n current developments in mechanical engineering design and stress analysis, where to meet res archers, testing equipm nt and software developers. The 47th AIAS Confer nce edition was held in Villa S. Giovanni (RC), Italy. Over 140 were present d as oral presenta and a selection has be n reviewed a d collected to be published in this volume. Th se sel cted contributions cover diverse areas of mechanical engineering design such as fatigue, fracture and damage, numerical © 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.: +39-0776-2993693; fax:+39-0776-2993390. E-mail address: bonora@unicas.it * Corresponding author. Tel.: +39-0776-2993693; fax:+39-0776-2993390. E-mail address: bonora@unicas.it

2452-3216 © 2018 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/3.0/) Peer-review under responsibility of the Scientific Committee of AIAS 2018 International Conference on Stress Analysis. 2452-3216 © 2018 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/3.0/) Peer-revi w u er responsibility of the Scientific Committee of AIAS 2018 International Conference on Stress Analysis.

* 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. 2452-3216  2018 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/3.0/) Peer-review under responsibility of the Scientific Committee of AIAS 2018 International Conference on Stress Analysis. 10.1016/j.prostr.2018.11.113