PSI - Issue 5

ScienceDirect Available online at www.sciencedirect.com Av ilable o line at ww.sciencedire t.com ScienceDirect Structural Integrity Procedia 00 (2016) 000 – 000 Procedia Struc ural Integrity 5 (2017) 1078–1085 Available online at www.sciencedirect.com ScienceDirect StructuralIntegrity Procedia 00 (2017) 000 – 000 il l li t . i i t. tr t r lI t rit r i ( )

www.elsevier.com/locate/procedia . l i r. /l t / r i

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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. 2nd International Conference on Structural Integrity, ICSI 2017, 4-7 September 2017, Funchal, Madeira, Portugal Preserving European paintings in Asian environment. Th case of Goa Cathedral former altarpiece. Vanessa Antunes a,b *, António Candeias c,d , José Mirão d , Maria L. Carvalho b , Vitor Serrão a , Cristina Barrocas D as d ,A a M nhita d , Mónica Esteves Reis e , Marta Manso b,f a ARTIS-Instituto História da Arte, Faculdade de Letras, Universidade de Lisboa (ARTIS-FLUL), Alameda da Universidade, 1600-214 Lisboa, Portug l. b LIBPhys-UNL, Laboratório de Instrumentação, Engenharia Biomédica e Física da Radiação, Departamento de Física, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516, Caparica, Portugal. c Laboratório José de Figueiredo, Direcção-Geral do Património Cultural (LJF-DGPC), Rua das Janelas Verdes 37, 1249-018 Lisboa, Portugal. d Laboratório HERCULES, Escola de Ciências e Tecnologia, Universidade de Évora, Largo Marquês de Marialva 8, 7000-676 Évora, Portugal e CHAIA- Centro de História da Arte e Investigação Artística, Palácio do Vimioso, Largo Marquês de Marialva, nº8, 7002-554 Évora. f Faculdade de Belas-Artes, Universidade de Lisboa, Largo da Academia Nacional de Belas-Artes, 1249-058 Lisboa, Portugal. Abstract How to preserve a set f paintings made with European materials and taken to South Asia in the 16 th century? A set of seven paintings belongin to the first altarpiece of Goa Cathedral now remain in its sacristy. Art history states that these paintings, assigne to the painter Gar ia Fe nandes, wer produced in Lisbon circa 1530 and carried to Goa shortly afte , Serrão (2011), Reis Santos (1957) .Presently, the conservation sta e of the paintings indicates urg nt tre tment. The most dam ged paintings show significant loss of the original chromatic layer. This is most y due t the high temperatures and r lative humidity exis ing in tropical climates, such as Goa, different from the Europ an. The B ltic oak support is covered with ground layers of calcium suphate, which present fissures and great losses due to the shrinkages of the wood support. The high reactivity of the ground materials to water is also a factor leading to specific material deterioration and degradation mechanisms. In comparison with the paintings of the same period produced in Portugal using the same materials, we verify a much higher degradation of the state of conservation. To access the procedures for preservation and restoration of this set of paintings we must take into account the possible degradation mechanisms of the constituent materials brought by specific environmental factors. This paper discusses the degradation problematic of this specific set of paintings taking into account their particular environment, while bringing results on the materials used. Concluding, this study will allow the knowledge on how to preserve and restore one of the most ancient sets of European paintings in India, kept since the 16 th century in tropical climate. © 2017 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of ICSI 2017. , , d b Barrocas Dias d ,Ana Manhi d e b,f a I -I tit t i t i t , l t , i i i ( I - ), l i i , - i , t l. b I - NL, Laboratório de Inst t , i i i í i i , t t í i , l i i l i , i i i , 29-516, Caparica, Portugal. c t i i i , i - l t i i lt l ( - ), l , - i , t l. d t i , l i i l i , i i , i l , - , t l e HAIA- Centro de História t I ti tí ti , l i i i , i l , º , - . f Facul l s-Artes, Univer i i , i i l l - t , - i , t l. t t o i ti it t i l t t t i i t th t t i ti l i g t t i t lt i t l i i it i t . t i t t t t t t i ti , assigned to the painter Garcia Fernandes, were produced in Lisbon circa 1530 and carried to Goa shortly after, Serrão (2011), Reis Santos (1957) .Presently, the conservation state of the paintings indicates urgent treatment. The most damaged paintings show signific t loss of t i i l ti l . i i tl t t i t t l ti i it i i i t i l li t , , i t t . lti t i it l l i t , i t i l t t i t t. i ti it t t i l t t i l t l i t i i t i l t i ti ti i . i t t i ti t i i t l i t t i l , i i ti t t t ti . t ti t ti t i t i ti t t i t t t i l ti i t tit t t i l t i i i t l t . i i t ti l ti t i i i t i ti t i i t t t i ti l i t, il i i lt t t i l . l i , t i t ill ll t l t t t t i t t i ti i i , t ince the 16 t t i t i l li t . © 2017 Th thors. Published by Elsevier B.V. Peer-review und i ilit t i ti i itt . © 2017 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of ICSI 2017 © 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.

Keywords: Painting,Conservation,Materials,Ground layer,Environment. : i ti , r ti , t ri l , r l r, ir t.

* Corresponding author. Email address: vanessahantunes@gmail.com i t r. il r : t il. rr

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.2017.07.081 * Corresponding author. Tel.: +351 218419991. E-mail address: amd@tecnico.ulisboa.pt 2452-3216© 2017 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of ICSI 2017. l i r . . i i ilit t i ti i itt . - t r . li