PSI - Issue 8

ScienceDirect Available online at www.sciencedirect.com Av ilable o line at ww.sciencedire t.com ienceDirect Structural Integrity Procedia 00 (2016) 000 – 000 Procedia S ructural Int grity 8 ( 8) 1–2 ScienceDirect Structural Integrity Procedia 00 (2017) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2017) 000 – 000

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www.elsevier.com/locate/procedia AIAS 2017 International Conference on Stress Analysis, AIAS 2017, 6-9 September 2017, Pisa, Italy Editorial Dario Amodio a , Nicola Bonora b *, Gabriele Arcidiacono c , Luigi Bruno d , Francesco AIAS 2017 International Conference on Stress Analysis, AIAS 2017, 6-9 September 2017, Pisa, I aly Editorial Dario Amodio a , Nicola Bonora b *, Gabriele Arcidiacono c , Luigi Bruno d , Francesco 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 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of AIAS 2017 International Conference on Stress Analysis Frendo e , Giuseppe Mirone f , Fracesco 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 “Gugliel mo Mar coni”, 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, ia S. Sofia, 64, 95123 Catania, Italy © 2017 The Authors. Published by Elsevier B.V. Peer-r view under responsibility of the Scientific Committee of AIAS 2017 International Conference on Stress Analysis. The Italian Association for Stress Analysis (AIAS) was founded in 1971 by researchers from academia, research centers and industry. AIAS was intended as a community where 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 t the development of oder numerical meth ds and computational techniques for the mechanical engineering d sign. In 2015, AIAS turned in the Italian Scientific Society o Mechanical Engin eri g Desi n. Today, AIAS is an institutional partner that supports the instances from academia in subject area f 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 interested in current developments in mechanical engineering design and stress analysis, where to meet researchers, testing equipment and software developers. The 46 th AIAS Conference edition was held in Pisa, Italy. Over 150 oral pres ntat ns w e given and a selection of these has been collect d in this volume. Thes contributions cover diverse areas of m chanical engineering d sign such as fatigue, racture and damage, numerical simulation of multi-physics problems, and material characterization. This year, in addition to the traditional topical sessions, a Frendo e , Giuseppe Mirone f , Fracesco Iacoviello b a niversità Politecnica delle Marche, via Brecce Bianche 2, 60131 Ancona, It ly b Università di Cassino e el Lazio Meridionale, via G. Di Biasio 43, 03043 Cassino, Italy c Università “Gugliel mo Mar coni”, Vi 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 © 2017 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Com ittee of AIAS 2017 International Conference on Stress Analysis. The Italian Association for Stress Analysis (AIAS) was founded in 1971 by researchers from academia, research centers and industry. AIAS was intended as a community where to discuss, share and develop scientific knowledge related to all technical aspects of stress analysis. In the years, fro an initial focus on experimental techniques, AIAS contribut d considerably to the velopment of m dern numerical m thods and computational te hniques for the mechanical engineering design. In 2015, AIAS turne in the Italian Scientific Soci ty of M chanical 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 interested in current developments in mechanical engineering design and stress analysis, where to meet researchers, testing equipment and software developers. The 46 th AIAS Conference edition was held in Pisa, Italy. Over 150 oral presentation were given and a selection of these has been collected in this volume. These contributions cov r diverse areas of mechanical engineer ng design such as fatigue, fracture and damage, numerical simulation of multi-physics problems, and material characterization. This year, in addition to the traditional topical sessions, a © 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.: +30-0776-299-3693; fax: +30-0776-299-3390. E-mail address: bonora@unicas.it

2452-3216 © 2017 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of AIAS 2017 International Conference on Stress Analysis. * Corresponding author. Tel.: +30-0776-299-3693; fax: +30-0776-299-3390. E mail address: bonora@un cas.it

2452-3216 © 2017 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of AIAS 2017 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 Copyright  2018 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of AIAS 2017 International Conference on Stress Analysis 10.1016/j.prostr.2017.12.001