PSI - Issue 13

ScienceDirect Available online at www.sciencedirect.com Av ilable o line at ww.sciencedire t.com cienceDirect Structural Integrity Procedia 00 (2016) 000 – 000 Procedia Structural Integrity 13 (2018) 1577–1582 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

www.elsevier.com/locate/procedia 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. ECF22 - Loading and Environmental effects on Structural Integrity Fracture behavior of the secondary A226 cast alloy with 0.9% Fe Lenka Kuchariková a , Magdalena Mazur *b , Eva Tillová a , Mária Chalupová a , Denisa Závodská a , Alan Vaško a a Department of Materials Engineering, Faculty of Mechanical Engineering, University of Žilina, Univerzitná 1 , 010 26 Žilina, Slovak Republic b Department of Management, Czestochowa University of Technology, Al. Armii Krajowej 19B, 42 200 Czestochowa, Poland The Al-Si- u cast alloys ar suitable for production of components for automotive and aer space industries due to an excellent combination of mechanical properties; for such applications, the fracture behaviour of castings is important. A dimple type - trans crystalline ductile fracture appears on the fracture surface of aluminium alloys, whose overall appearance shows both the matrix (  -phase) violation and the shape and size of the eutectic Si and the secondary - intermetallic phases. Nowadays, an increasing amount of aluminium is coming from the recycled products. The recycled aluminium cast alloys contain various additional elements (especially the higher amount of Fe), which are forming various secondary phases in microstructure. This paper describes dependence of the fracture surface character on the morphology and types of the secondary phases in the recycled A226 cast alloy with 0.9 % of Fe. The used experimental material was heat-treated and the fracture surface properties and morphology of the secondary phases in microstructure were analysed by a combination of different analytical techniques. © 2018 The Authors. Published by Elsevier B.V. Peer-review und r responsibility of the ECF22 organizers. Keywords: fracture behaviour, secondary aluminium alloys, aluminium casting, intermetallic phases, recycling; Engine blocks with aluminium cylinders were first produced in 1961. Later, the aluminium alloys were used for automobile parts such as: wheels, transmission castings, cylinder head, suspensions joint and so on, Drozdov (2007). Today's interest is focusing on growing demand for more fuel-efficient vehicles to reduce the energy consumption and air pollution, which became a challenge for the current automotive industry. The results point to the fact that 50 © 2018 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ECF22 organizers. ECF22 - Loading and Environmental effects on Structural Integrity Fracture behavior of the secondary A226 cast alloy with 0.9% Fe Lenka Kuchariková a , Magdalena Mazur *b , Eva Tillová a , Mária Chalupová a , Denisa Závodská a , Alan Vaško a a Department of Materials Engineering, Faculty of Mechanical Engineering, University of Žilina, Univerzitná 1 , 010 26 Žilina, Slovak Republic b Department of Manag me t, Czestoch wa University of Technology, Al. Armii Krajowej 19B, 42 200 Czestochow , Poland Abstract The Al-Si-Cu cast alloys are suitable for production of components for automotive and aerospace industries due to an excellent combination of mecha ical properties; for such applicati ns, the fracture behaviour of castings is imp rtant. A dimple typ - trans rystalline ductile fracture appears on the fracture surface of alumini m alloys, whose overall appearance shows both the matrix (  -phase) violation nd the shape and size of the e tectic Si and the secondary - int rmetallic hases. Nowadays, an increasing amount of aluminium is coming from the recycled products. The recycled aluminium cast alloys cont in vari us additio al elements (especially the higher amou t of Fe), which are forming various secondary phases in mi rostructure. This paper describe dependence of t e fracture s rface character on th morphology and types of the secondary phases in the recycled A226 cast alloy with 0.9 % f Fe. The used exp rimental material was heat-treated and the fracture surface properti s and morphology of the secondary phases in microstructure were analysed by a combination of differ nt nalytical techniques. © 2018 The Authors. Published by Elsevier B.V. Peer-review under responsibility of th ECF22 organiz rs. Keywords: ractur behaviour, secondary aluminium alloys, aluminium casting, i termetallic ph ses, recycling; 1. Introduction Engine blocks with aluminium cylinders were first produced in 1961. Later, the aluminium alloys were used for automobile parts such as: wheels, transmission castings, cylinder head, suspensions joint and so on, Drozdov (2007). Today's interest is focusing on growing demand for more fuel-efficient vehicles to reduce the energy consumption and air pollution, which became a challenge for the current automotive industry. The results point to the fact that 50 © 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. Abstract 1. Introduction

* Corresponding author. Tel.: +351 218419991. E-mail address: amd@tecnico.ulisboa.pt 2452-3216 © 2018 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ECF22 organizers. 2452-3216 © 2018 The Authors. Published by Elsevier B.V. Peer review under r sponsibility of the ECF22 o ganizers. * Corresponding author. Tel.: +0-000-000-0000 ; fax: +0-000-000-0000 . E-mail address: magdalena.mazur@wz.pcz.pl * Corresponding author. Tel.: +0-000-000-0000 ; fax: +0-000-000-0000 . E-mail ad ress: magdalena.mazur@wz.pcz.pl

2452-3216 © 2016 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of PCF 2016.

2452-3216  2018 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ECF22 organizers. 10.1016/j.prostr.2018.12.322