PSI - Issue 13

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 Structu al Integrity 13 (2018) 97–103 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2018) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Int grity 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. ECF22 - Loading and Environmental effects on Structural Integrity INCEFA-PLUS (Increasing safety in NPPs by covering gaps in environmental fatigue assessment) Isabela Procopio a, *, Sergio Cicero a , K v M ttershead b , Matthia Bruchhause c , Sam Cuvilliez d a University of Cantabria, Avenida los Castros 44, Santander 39005, Spain b Wood, 305 Bridgewater Place, Warrington WA3 6XG, UK c European Comission (Joint Research Centre – JRC), Westerduinweg 3, Petten 1755 LE, Netherlands d Electricité de France (EDF – DIPNN - DT), 19 rue Bourdeix, CS 80323, 69363 Lyon Cedex 07, France Abstract INCEFA-PLUS is a European Proje t (funded by the EC HORIZON2020 program) st rt in July 2015 and lasts f ve years (until June 2020). The project involves 16 members from all over Europe and its main goal is to guarantee safety in operations of Nuclear Power Plants (NPPs) by delivering experimental data to support the development of improved environmental fatigue assessment guidelines. The issues of common interest are being studied: the effects of mean strain/stress, hold time, strain amplitude and surface finish on the fatigue performance of austenitic stainless steels in the LWR (Light Water Reactor) environment. Within the framework of the CEN (European Committee for Standardization) workshop FATEDA, the consortium developed a fatigue data format, used in an online environmental fatigue database, available for all participants. The paper describes phase one (of three) testing, including conditions such as surface finish and hold time. The plans that are being made for phase two testing will be detailed. The materials used in the tests, the surface finish data and some experimental results for phase one are presented, together with a summary of the INCEFA PLUS testing protocol. Finally, a review of existing assessment methodologies and a summary of dissemination activities are provided. © 2018 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ECF22 organizers. Keywords: Environmental Fatigue, INCEFA-PLUS, Light Water Reactor, Nuclear Power Plants. © 2018 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ECF22 organizers. ECF22 - Loading and Environmental effects on Structural Integrity INCEFA-PLUS (Increasing safety in NPPs by covering gaps in environmental fatigue assessment) Isabela Procopio a, *, Sergio Cicero a , Kevin Mottershead b , Matthias Bruchhausen c , Sam Cuvilliez d a University of Cantabria, Avenida los Castros 44, Santander 39005, Spain b Wo d, 305 Bridgewater Place, Wa rington WA3 6XG, UK c European Comission (J int Resea ch Centr – JRC), Westerdui weg 3, Petten 1755 LE, Netherlands d Electricité de France (EDF – DIPNN - DT), 19 rue Bourdeix, CS 8032 69363 Lyon Cedex 07, France Abstract INCEFA-PLUS is a European Project (funded by the EC HORIZON2020 program) started in July 2015 and lasts five years (until June 2020). The proj ct involves 16 members from all over E rope and its main goal is to guarantee safety in operations of Nuclear Power Plants (NPPs) by delivering experi ental data to support the develop ent of improved environmental fatigue assessment guidelines. The issues of common interest are bei g studied: the effects of mean strain/stress, hold time, strain amplitude and surface finish on the fatigue performance of aust nitic stai less ste ls in the LWR (Light W ter R actor) environment. Within the framework of t e CEN (European Co mittee for Standardization) workshop FATEDA, the consortium developed a fatigue data format, used in an online environmental fatigue database, available for all participants. The paper describes phase one (of three) testing, including conditions such as surface finish and hold time. Th plans that are being made for phase two testing will be detailed. The materials used in the tests, the surface finish data and some ex erimental results for phase one are presented, togeth r with a summary of the INCEFA PLUS testing protocol. Finally, a review of existing assessment methodologies and a summary of dissemination activities are provided. © 2018 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ECF22 organizers. Keywo ds: Environmental Fatigue, INCEFA-PLUS, Light Water Reacto , Nuclear Power Plan s.

1. Introduction

© 2016 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of PCF 2016. 1. Introduction

Keywords: High Pressure Turbine Blade; Creep; Finite Element Method; 3D Model; Simulation. INCEFA-PLUS is a major five-year project supported by the European Commission HORIZON2020 program. The project commenced in mid-2015. Sixteen (16) organizations from across Europe have combined forces to deliver new INCEFA-PLUS is a major five-year project supported by the European Commission HORIZON2020 program. The project commenc d in mid-2015. Sixt en (16) organizations from across Europe have combined forces to deliver new

* Corresponding author. Tel.: +34-942-200-928 E-mail address: pessoai@unican.es * Corresponding author. Tel.: +34-942-200-928 E-mail ad ress: pessoai@unican.es

* 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 organizers.

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.2018.12.017