PSI - Issue 5

ScienceDirect Available online at www.sciencedirect.com Av ilable o line at ww.sciencedire t.com Sci ceDirect Structural Integrity Procedia 00 (2016) 000 – 000 Procedia Structu al Integrity 5 (2017) 516–523 Available online at www.sciencedirect.com 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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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. International Conference on Structural Integrity, ICSI 2017, 4-7 September 2017, Funchal, Madeira, Portugal Joi ing TWIP-Steel Simulation Models Folgar Ribadas H. a *, Böddeker T. b , Chergui A. c , Ivanjko M. d , Gili F. e , Behrens S. f a COMTES FHT a.s., Průmyslová 995, Dobřany, Czech Republic (COM) b Salzgitter Mannesmann Forschung GmbH (SZ) c Thyssen Krupp Steel Europe (TKSE) d Laboratorium für Werkstoff- und Fügetechnik, Universität Paderborn (LWF) e Centro Ricerche Fiat (CRF) f Institut für Werkstoffkunde, Leibniz-Universität Hannover (IW) Abstract JoiningTWIP project aims to support the introduction of TWIP-steels for automotive applications (in cars, trucks and buses) by identifying possible applications and further developing mechanical and low-heat joining technologies to be able to implement multi-material design with TWIP-steels. To guarantee a full view of the project team members from steel industry, car manufacturers, joining technology suppliers and universities are working together. This work describes the simulation stage of the different technologies. During the project, the materials described in the scope of the project were tested in order to obtain material characterization. Also, the different multi-material joints were tested to describe the joining process and the joining quality. These results will be used to build complex simulation models and prototypes, which show the performance and the behavior of the joining processes of TWIP-steels. Five different technologies were analyzed in the scope of the project: clinching, high-speed bolt setting, resistance element welding (REW), friction element welding (FEW) and flow drill screwing (FDS). To guarantee the performance of the simulation models, the results were compared to the sampled joint and processes. An optimization process of the different technologies was applied to improve the quality and the performance of the different joints. International Conference on Structural Integrity, ICSI 2017, 4-7 September 2017, Funchal, Madeira, Portugal Joining TWIP-St el Simu ation Models Folgar Ribadas H. a *, Böddeker T. b , Chergui A. c , Ivanjko . d , Gili F. e , Behrens S. f a COMTES FHT a.s., Průmyslová 995, Dobřany, Czech Republic (COM) b Salzgitter Mannesmann Forschung GmbH (SZ) c Thyssen Krupp Steel Europe (TKSE) d Laboratorium für Werkstoff- und Fügetechnik, Universität Paderborn (LWF) e Centro Ricer he Fiat (CRF) f Institut für Werkstoffkunde, Leibniz-Universität Hannover (IW) Abstract JoiningTWIP project aims to support the introduction of TWIP-steels for automotive applications (in cars, trucks and buses) by identifying possible applications and further developing mechanical and low-heat joining technologies to be able to implement multi-material design with TWIP-steels. To guarantee a full view of the project team members from steel industry, car manufacturers, joining technology su pliers and universities are working together. This work de crib s the simulatio stage of the different t nologies. During the project, the materials describ d in the scope of the proj ct wer tested n order to obtain material characterization. Als , the different multi-mat rial joints were t sted to describe the joining p ocess and the j ining quality. These results will be used to build complex simulation models and prototypes, which show the pe formance and the behavior of the joining processes of TWIP-steels. Fiv diff ren t chnologies we e analyzed in th scop of the proj ct: clinching, high-speed bolt setting, resistance elemen welding (REW), friction element w lding (FEW) and flow drill screwing (FDS). To guarantee the performance of the simula ion models, th results were compared to the sampled joint and processes. An optimization process f t e d fferent technologies was app ied to improve h quality and th performance of the different joints.

© 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.

Fig. 1. Technologies described in the JoiningTWIP project

2452-3216 © 2016 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of PCF 2016. 2452-3216  2017 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of ICSI 2017 10.1016/j.prostr.2017.07.154 2452-3216 © 2017 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of ICSI 2017. * Corresponding author. Tel.: +351 218419991. E-mail address: amd@tecnico.ulisboa.pt * Corresponding author. Tel.: +420-377-197-322; fax: +420-377-197-310. E-mail address: hfolgar@comtesfht.cz 2452-3216 © 2017 The Authors. Published by Elsevier B.V. Peer review under responsibility of the Scientific Committee of ICSI 2017. * Corresponding author. Tel.: +420-377-197-322; fax: +420-377-197-310. E-mail address: hfolgar@comtesfht.cz © 2017 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of ICSI 2017

Fig. 1. Technologies described in the JoiningTWIP project