PSI - Issue 11

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ScienceDirect Available online at www.sciencedirect.com Av ilable o line at www.sciencedirect.com Sci ceDirect Structural Integrity Procedia 00 (2016) 000 – 000 Procedi Structural Integrity 11 8 28–35 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2018) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity 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. XIV International Conference on Building Pathology and Constructions Repair – CINPAR 2018 Life cycle perspective in RC building integrated renovation Marini A. a *, Passoni C. a , Belleri A. a a Department of Engineering and Applied Scienc, University of Bergamo, Viale Marconi 5, 24044 Dalmine (BG), Italy Enormous resources are invested in Europe for the transition into a sustainable, low carbon, and resilient society. In the construction sector, these concepts are slowly being applied to the renovation of the existing building stock by enforcing their deep and holistic renovation targeting sustainability, safety and resilience. Effectiveness of such an approach to the renovatio with respect to traditional retrofit actions emerges when broadening the time frame of the analyses, shifting from the construction time to a life cycle perspective. In this case, the potential of the holistic approach becomes clear in reducing costs, impacts on the inhabitants and impacts on the environment over the building life cycle. Within such a new perspective, new technology options are needed to innovatively combine structural retrofit, architectural restyling and energy efficiency measures. Furthermore, a new design approach conjugating the principles of sustainability, safety and resilience over the building life cycle is required. In such a transition, synergistic and cooperative work of researchers, design professionals, and all the stakeholders in the construction sector is required. In this paper, the basic features of an expanded Life Cycle Thinking (eLCT) approach will be presented, which not only entails the use of recyclable/reusable materials, but also encourages interventions carried out from the outside the buildings to reduce building downtime and avoid inhabitant relocation. In addition, such an expanded LCT fosters the adoption of reparable, easy maintainable, adaptable and fully demountable solutions, such as those featuring dry, demountable and pre-fabricated components. Finally, it addresses the need to account for the End of Life scenario from the initial design stages to guarantee selective dismantling and reuse or recycle to reduce construction waste. Finally, a discussion on the main barriers and challenges in the transition towards this new approach to the renovation of existing building stock is briefly presented. XIV International Conference on Building Pathology and Constructions Repair – CINPAR 2018 Life cycle perspective in RC building integrated renovation Marini A. a *, Passoni C. a , Belleri A. a a Department of Engineering and Applied Scienc, University of Bergamo, Viale Marconi 5, 24044 Dalmine (BG), Italy Abstract Enormous resources are invested in Europe for the transition into a sustainable, low carbon, and resilient society. In the construction sector, these concepts are slowly being applied t the renovation of the existing building stock by enforcing their deep and holistic renovation targeting sustainability, safety and resilience. Effectiveness of such an approach to the renovation with respect to traditional retrofit actions emerges when broadening the time frame of the analyses, shifting from t e construction time to a life cycle perspective. In this case, the potential of the olistic approach becomes clear in reducing costs, impacts on the inhabitants and impacts on the environment over th building life cycle. Within such a new perspective, new technology ptions are needed to innovatively combine structural r trofit, archite tural restyling and energy effici ncy measures. Furtherm re, a new design approach conjugating the principles of sustainability, safety and resilie ce over the building life cycle is required. In such a transition, synergistic and cooperative work of researchers, design profes ionals, and all the stakeholders in the construction sector is required. In this paper, the basic features of an expanded Life Cycle Thinking (eLCT) approach will be presented, which not only entails the use of recycla le/reusable materials, but also encourages i terventions carried out from the outside the buildings to reduce building downtime and avoid inhabitant relocation. In additio , such an expanded LCT fosters the a option of reparable, easy maintainable, adaptable and fully demountable solutions, such as those featuring dry, demountable and pre-fabricated components. Finally, it addresses the need to account for the End of Life scenario from the initial design stages to guarant e selective disma tling and reuse or recycle to redu e construction waste. Finally, discussion on the main barriers and challe g s in the transition towards this n w approach to the renovation of existing building stock is briefly prese ted. Copyright © 2018 Elsevier B.V. All rights reserved. Peer-review under responsibility of the CINPAR 2018 organizers © 2016 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of PCF 2016. Copyright © 2018 Elsevier B.V. All rights reserved. Peer-review under responsibility of the CINPAR 2018 organizers Keywords: Life Cycle thinking, Deep renovation, Integrated retrofit, Resilience, Sustainability Copyright © 2018 Elsevier B.V. All rights reserved. Peer-review under responsibility of the CINPAR 2018 organizers Keywords: Life Cycle thinking, Deep renovation, I tegrated retrofi , Resilience, Sustainability Abstract

Keywords: High Pressure Turbine Blade; Creep; Finite Element Method; 3D Model; Simulation.

* Corresponding author. Tel.: +39 035 205 2377. E-mail address: alessandra.marini@unibg.it * Corresponding author. Tel.: +39 035 205 2377. E-mail ad ress: alessandra.marini@unibg.it

* Corresponding author. Tel.: +351 218419991. E-mail address: amd@tecnico.ulisboa.pt 2452-3216 Copyright © 2018 Elsevier B.V. All rights reserved. Peer-revi w u er responsibility of the CINPAR 2018 organizers. 2452-3216 Copyright © 2018 Elsevier B.V. All rights reserved. Peer-review under responsibility of the CINP R 2018 organizers.

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