PSI - Issue 13

ScienceDirect Available online at www.sciencedirect.com Av ilable o line at www.sciencedire t.com ScienceDirect Structural Integrity Procedia 00 (2016) 000 – 000 Procedia Structu al Integrity 13 (2018) 415–419 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. © 2018 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ECF22 organizers. faults, landslides and natural slopes Zeljko Zugić * , Mihajlo Aranđelović, Boris Folić "a University of Belgrade, Innovation Center of the Faculty of Mechanical Engineering, Kraljice Marije 22, Belgrade, Serbia" Abstract Permanent ground displacement analysis methods, as very important aspect of the seismic dynamic analysis is explained in the paper. A methodology for probabilistic hazard assessment of permanent displacement across natural slopes and landslides caused by earthquake rupture is presented, compatible with regions with low to moderate seismicity, as well as comparison with the results of the other authors. The results show that for the most cases, in terms of displacement of earthquake faults the displacement hazard is small, in contrast to ground shaking hazard. From the other side, slope displacements (rockfalls landslides, mudflows) as side effects may cause huge consequences during the earthquake. © 2018 The Authors. Published by Elsevier B.V. Peer-review under resp sibility of the ECF22 organizers. Keywords: Type your keywords here, separated by semicolons ; 1. Introduction The deformation analysis of shear ruptures, as occur in landslides and earthquakes, is focus of this paper, Fig. 1. Since the seismic activity is one of the main caus s of landslides deformation we focus on seismically induced ruptures considering both seismic faults and landslides. The permanent rupture displacement has been analyzed in terms of: faults, landslides and natural slopes Zeljko Zugić * , Mihajlo Aranđelović, Boris Folić "a University of Belgrade, Innovation Center of the Faculty of Mechanical Engineering, Kraljice Marije 22, Belgrade, Serbia" Abstract Permanent ground displacement analysis methods, as very important aspect of the seismic dynamic analysis is explained in the paper. A methodology for probabilistic hazard assessment of perm ent displacement across natural slopes and landslides caused by earthquake rupture is presented, compatible with r gions with low to moderate seismicity, as well as comparison with the results of the other authors. The results show that f r th most cases, in terms of displacement of e rthquake faults t di placement hazard is small, in contrast t ground shaking hazard. From the other side, slope displacements (rockfalls landslides, mudflows) as ide effects may cause huge consequences during the eart quake. © 2018 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ECF22 organizers. Keywords: Type your keywords here, separated by semicolons ; 1. Introduction The deformation analysis of shear ruptures, as occur in landslides and earthquakes, is focus of this paper, Fig. 1. Sinc the seismic activity is on of the main causes of landslides deformation w focus on seismically induc d ruptures consi ering oth seismic faults and landslides. The permanent rupture displacement has been analyzed in terms of: ECF22 - Loading and Environmental effects on Structural Integrity Permanent ground displacement across earthquake ECF22 - Loading and Environmental effects on Structural Integrity Permanent ground displacement across earthquake

© 2016 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of PCF 2016. • Displac ment magnitud • Displacement frequency • Rupture affection by fluids • Rupture hazard relation to induced risk to people and environment • Displacement magnitude • isplace ent frequency • Rupture affection by fluids • upture hazard relation to induced risk to people and environment 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 © 2018 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ECF22 organizers. 2452-3216 © 2018 The Authors. Published by Elsevier B.V. Peer review under r sponsibility of the ECF22 o ganizers. * Corresponding author. Tel.: +381-63-31-40-40 ; fax: +381-11-8219681 E-mail address: zzugic@gmail.com * Corresponding author. Tel.: +381-63-31-40-40 ; fax: +381-11-8219681 E-mail ad ress: zzugic@gmail.com

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 ECF22 organizers. 10.1016/j.prostr.2018.12.069