PSI - Issue 5

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 Struc ural Integrity 5 (2017) 1123–1128 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2017) 000 – 000

www.elsevier.com/locate/procedia

www.elsevier.com/locate/procedia

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 Restoration mortars for the Volubilis calc renite stone Aalil Issam a,b *, Beck Kevin a , Brun taud Xavier a , Badreddine Dalal a,b , Cherkaoui Khalid b , Chaaba Ali b , Al-Mukhtar Muzahim a a PRISME laboratory - EA4229 University of Orléans INSA-CVL, Orleans, France b National Higher School of Engineering (ENSAM), Moulay Ismail University, Morocco Abstract Volubilis is the most important archaeological site in Morocco. It has been registered on the UNESCO World Heritage list since December 1997. For preservation purposes, the main building stone of the site was characterized and many mortars were formulated and analyzed. Aerial lime and regional materials such as brick dust and washed dolomitic sand were used to make nine mortars. After one month of maturation, physical and mechanical tests were carried out. The results indicated that the calcarenite stone is a porous, soft and medium-absorbing stone. Characterization of the mortars confirmed the pozzolanicity of the brick dust. It decreases the porosity and the capillary absorption if used as lime substitution and increases them if used as aggregate. It also improves the compressive strength. A preliminary compatible mortar recipe was selected for future interventions. © 2017 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of ICSI 2017. Keywords: Volubilis; calcare ite stone; mortar; rick dust; comp tibility 1. Introduction Volubilis is one of Africa’s most famous archaeological sites (fig.1). It is located near the city of Moulay Idriss Zerhoun, 30 km north of the city of Meknès in Morocco, and covers about 42 hectares. It was the capital of the Mauritanian empire when it was founded in the 3rd century B.C., and subsequently became an important outpost of the Roman Empir in 40 AD (Pan tier & Liman 2002). T e city was abandoned in the 3rd century and then conquered by the Arabs in the 7th century. Many excavations and restoration works of the site began in 1915. In December 1997, Madeira, Portugal a alil Issam a,b *, Beck Kevin a , Brunetaud a a,b b b a Th A lsevier a is located near the city of Moulay Idriss e e © 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.

* Corresponding author. E-mail address: aalil.issam@gmail.com

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.2017.07.106 * 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.