PSI- Issue 9

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 9 ( 8) 1–2 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2018) 000–000

www.elsevier.com/locate/procedia

www.elsevier.com/locate/procedia

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. Peer-review under responsibility of the Gruppo Italiano Frattura (IGF) ExCo. IGF Workshop “Fracture and Structural Integrity” Editorial Francesco Iacoviello a *, Luca Susmel b , Donato Firrao c , Giuseppe Ferro c a Università di Cassino e del Lazio Meridionale, via G. Di Biasio 43, 03043 Cassino (FR) Italy b University of Sheffield, Mappin Street, Sheffield, S1 3JD, UK c Politecnico di Torino, Corso Duca degli A ruzzi 24, 10129, Torino, Italy © 2018 Th Authors. Published by Els vier B.V. Peer-review under responsibility of the Gruppo Italiano Frattura (IGF) ExCo. Keywords: Editorial; Short IGF history. Since its foundation in 1982, Gruppo Italiano Frattura (the Italian Group of Fracture, IGF) organized dozens of national and international events, including Workshops, Conferences and Summer Schools. During these 40ish years, seven presidents (i.e., G. Caglioti, G. Angelino, D. Firrao, S. Reale, A. Carpinteri, G. Ferro and F. Iacoviello) worked together with almost one hundred Executive Com ittee Members not only to spread and promote the results from research work focused on fracture phenomena, but also to support different activities aiming to develop standards for testing of material and structures. As we have already written in the Editorial of the 3 rd Issue of Procedia Structural Integrity (that was published last year), keywords like “Fracture” and “Structural Integrity” return ot only a wide range of materials being investigated (such as, for inst nce, concrete, stainles steel, rocks, and p lymers) but also a large number of di ferent numerical and experimental approach s being used. This results in the fact that it is difficult for us to define th pr file of the “typical” IGF member: a metallurgist or a materials scientist? a civil engineer or a mechanical engineer? a “PC addicted” person or a “lab rat” scientist? All these different profiles of researchers happily live together under the IGF umbrella, with the IGF making a big effort over the last 40ish years to offer them the best support we possibly could give. In 2015, the 23 rd edition of the IGF Conference was the first one organized as an international event. It was held in Favignana, a wonderful Sicilian island, with the Proceedings from this event being published in “Procedia Engineering”. Last ear, the IGF organized its second inst tutional conf rence as an international event in Urbino, Italy, and published for the first time the associated Proceedings in “Procedia Structural Integrity”. “Procedia Structural Integrity” is a recently © 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.: +39.07762993681; fax: +39.07762993781. E-mail address: iacoviello@unicas.it

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. Peer-review under responsibility of the Gruppo Italiano Frattura (IGF) ExCo. 10.1016/j.prostr.2018.06.001 * Corresponding author. Tel.: +351 218419991. E-mail address: amd@tecnico.ulisboa.pt 2452-3216 © 2018 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Gruppo Italiano Frattura (IGF) ExCo.