PSI - Issue 2_B

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 2 (2016) 1781–1788 Available online at www.sciencedirect.com Sci nceDirect Structural Integrity Procedia 00 (2016) 000–000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2016) 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. 21st European Conference on Fracture, ECF21, 20-24 June 2016, Catania, Italy Role of vortex-like motion in fracture of coating-substrat system under contact loading A.Yu. Smolin a *, G.M. Eremina b , E.V. Shilko a , S.G. Psakhie c,d a Institute of Strength Physics and Materials Science SB RAS, pr. Akademicheskiy 2/4, 634055, Tomsk, Russia b Tomsk State University, pr. Lenina 36, 634050, Tomsk, Russia c Tomsk Institute of High Technology Physics of Tomsk Polytechnic University, pr. Lenina 30, 634050, Tomsk, Russia d Skolkovo Institute of Science and Technology, Novaya St., 100, Karakorum Buil ing, 4th floor, Skolkovo, 143025, Russia Abstract Deformation of a heterogeneous material containing internal interfaces or/and free surfaces is accompanied by collective vortex motion near these boundaries. One should expect that rotational motion in nanomaterials takes place at different scales, from the atomic scale to the macroscopic one. Nevertheless such a fundamental factor as elastic vortex motion in material formed during dynamic loading still remains out of discussion. The aim of this paper is revealing the role of vortex displacements in contact interaction of the st engthening coating with a hard counter-body by means of 3D modeling using movable cellular automata (MCA). MCA method is an fficient numerica method in particle mechanics, which assumes that the ma erial is co pos d of a certain amou t f lementary obj cts interacting among each oth r according to many-particl forces. In this paper MCA metho is applied to 3D m deling deform tion of the coating-substrate system under its contact loading by the rigid indenter. Main attention of the research is focused on the role of vortex structures in the velocity fields in elastic and non-elastic deformation of the strengthening coating and substrate. The mechanical properties of the odel coating correspond to multifunctional nanostructured film and the properties of the substrate, to nanostructured titanium. The loading is performed by a hard conical indenter with various ratios of normal and tangential components. The peculiarities of the velocity vortex formation and propagation, as well as interaction with the structural elements are studied. © 2016 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of ECF21. 21st European Conference on Fracture, ECF21, 20-24 June 2016, Catania, Italy Role of vortex-like motion in fracture of coating-substrate system under contact loading A.Yu. Smolin a *, G.M. Eremina b , E.V. Shilko a , S.G. Psakhie c,d a Institute of Strength Physics and Materials Science SB RAS, pr. Akademicheskiy 2/4, 634055, Tomsk, Russia b Tomsk State University, pr. Lenina 36, 634050, Tomsk, Russia c Tomsk Institute of High Technology Physics of Tomsk Polytechnic University, pr. Lenina 30, 634050, Tomsk, Russia d Skolkovo Institute of Science and Technology, Novaya St., 100, Karakorum Building, 4th floor, Skolkovo, 143025, Russia Abstract Deformation of a heterogeneous material containing internal interfaces or/and free surfaces is accompanied by collective vortex motion near these boundaries. One should expect that rotational motion in nanomaterials takes place at d fferent scales, from he at mic scale to the macroscopic one. Nevertheless such a fu da ental factor as elast c vortex motion in mat rial formed during dynamic loading still remains out of discussion. The aim of this paper is revealing the rol of vortex displacements in contact interaction of the strengthe ing coating with a hard counter-body by means of 3D modeling using movable cellular aut m ta (MCA). MCA method is an efficien numerical m thod i particle mechani s, which assumes that the material is composed of certain amount of elementary objects interacting among ea h other ac ording to m ny-particl forces. In this aper MCA metho is applied to 3D m deling defo mation of he coati -substrat syste under its cont ct oading by t e rigid indent r. Main attention of th research is focused on the role of vortex t uctur s in the velocity fields in elastic and non-elastic deformation of the strengthening coating and substrat . The mechanical p operties of the model coating correspond to multifunctional na o tructur d film and the properties of the substrate, to nanostructured titaniu . The l di is perfor ed by a hard conic l indenter with various ratios of normal and tangential comp nents. The pec liarities f the velocity vortex formation and propagation, as well as in eraction with the structural elements are studied. © 2016 The Authors. Published by Elsevier B.V. Peer-review under espons bility of the Scientific Committee of ECF21. Copyright © 2016 The Authors. Pub ished by Elsevier B.V. This is an open access ar icle under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Peer-review under responsibility of the Scientific Committee of ECF21. © 2016 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of PCF 2016. Keywords: Nanostructured coating; contact loading; elastic waves; velosity field; vortex; simulation Keywords: Nanostructured coating; contact loading; elastic waves; velosity field; vortex; simulation

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

* Corresponding author. Tel.: +351 218419991. E-mail address: amd@tecnico.ulisboa.pt 2452-3216 © 2016 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of ECF21. 2452-3216 © 2016 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of ECF21. * Corresponding author. Tel.: +7-3822-286-975; fax: +7-3822-492-576. E-mail address: asmolin@ispms.tsc.ru * Corresponding author. Tel.: +7-3822-286-975; fax: +7-3822-492-576. E-mail address: asmolin@ispms.tsc.ru

2452-3216 © 2016 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of PCF 2016. Copyright © 2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license ( http://creativecommons.org/licenses/by-nc-nd/4.0/ ). Peer review under responsibility of the Scientific Committee of ECF21. 10.1016/j.prostr.2016.06.224