PSI - Issue 11

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ScienceDirect Available online at www.sciencedirect.com Av ilable o line at ww.sciencedirect.com Sci ceDirect Structural Integrity Procedia 00 (2016) 000 – 000 Procedia Structu al Integrity 11 (2018) 242–249 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 Wood preservation for preventing biodeterioration of Cross Laminated Timber (CLT) panels assembled in tropical locations Gabriela Lotufo Oliveira a *, Fabiana Lopes de Oliveira b , Sérgio Brazolin c a, b Faculdade de Arquitetura e Urbanismo, Universidade de São Paulo, Rua do Lago, 876, São Paulo, Brazil c Instituto de Pesquisas Tecnológicas (IPT), Av. Prof. Almeida Prado, 532, São Paulo, Brazil Abstract Cross Laminated Timber (CLT) is a construction system based on pre-fabricated solid wood panels. As this system is produced with a natural material, its implementation is associated with the adoption of preventive measures against pathological processes intrinsic to wood, such as biodeterioration. This phenomenon can be defined as undesirable changes in wood elements provoked by living organisms that use wood as food supply. Microorganisms, such as fungi, and insects, such as termite and wood-boring beetles are among these organisms. Their developments occur under favorable moisture and temperature circumstances; thus, climate conditions are important factors for the wood structure durability. The use of CLT panels in tropical climates must be associated with wood preservation methods to avoid decay of the struct ral components. This pap r aims to discuss preservation treatment appli d to CLT pan ls in tropical locations, comparing the standards ado ted in diff rent countries where CLT buildi gs are used. Additionally, a case study was conducted. Hence, samples of Pinus sp. from the south region of Brazil and treated with CCB ( opper, c romium and boron solution) were test d to identify the penetration and the retention of the preservation product. The tests followed the method suggested by Brazilian standard ABNT NBR 6232:2013. The results showed that it is necessary to establish quality control to avoid CLT production with no adequate wood protection against xylophagous organisms. Copyright © 2018 Elsevier B.V. All rights reserved. Peer-review under responsibility of the CINPAR 2018 organizers Copyright © 2018 Elsevier B.V. All rights reserved. Peer-review under responsibility of the CINPAR 2018 organizers XIV International Conference on Building Pathology and Constructions Repair – CINPAR 2018 Wood preservation for preventing biodeterioration of Cross Laminated Timber (CLT) panels assembled in tropical locations Gabriela Lotufo Oliveira a *, Fabiana Lopes de Oliveira b , Sérgio Brazolin c a, b Faculdade de Arquitetura e Urbanismo, Universidade de São Paulo, Rua do Lago, 876, São Paulo, Brazil c Instituto de Pesquisas Tecnológicas (IPT), Av. Prof. Almeida Prado, 532, São Paulo, Br zil Abstract Cross Laminated Timber (CLT) is a construction system based on pre-fabricated solid wood panels. As this system is produced with a n tural material, its implementation is associated with the adoption of prevent ve measures against pathological pr cess s intrinsic to wood, such as biodeterior ti . Thi phenomenon can be defi ed as undesirabl changes in wood elements vok d by living rganisms t at use wood as fo d supply. Microorganisms, such as fungi, and ins cts, such as termit and wood-b ring eetles are among these organisms. Their deve opments occur under favorable moisture and temperatu e circumstances; thus, climate conditi s ar important factors for th wood stru ture durability. The use of CLT panels in tropi al climates must be associated with wood preserv tion methods to avoid ecay of the structural components. This paper aims to dis uss preserva ion treatment applied to CLT panels i tropic l locations, comparing the standards adopted in different countries where CLT buil ngs ar us d. Additionally, a case study was conducted. Hence, samples of Pinus sp. from the south region of Brazil and tr ated with CCB (copper, chromium and boron soluti ) were test d to identify the penetration and the re ention of the preservation product. The tests followed the ethod suggested by Brazilian standard ABNT NBR 6232:2013. The results showed that it is necessary to establi h quality control to avoid CLT production with no adequate wood protection against xylophagous organisms. Copyright © 2018 Elsevier B.V. All rights reserved. Peer-review under re ponsibility of the CINPAR 2018 organizers Keywords: Cross Laminated Timber (CLT); wood structures; biodeterioration; preservation treatment.

© 2016 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of PCF 2016. Keywords: Cross Laminated Timber (CLT); wood structures; biodeterioration; preservation treatment.

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

* Corresponding author. Tel.: +55 11 30914539 E-mail address: gabriela.lotuffo.oliveira@usp.br * Corresponding author. Tel.: +55 11 30914539 E-mail ad ress: gabriela.lotuffo.oliveira@usp.br

* 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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