PSI- Issue 9

ScienceDirect Available online at www.sciencedirect.com Av ilable o line at ww.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2016) 000 – 000 Procedia Structu al Integrity 9 (2018) 116–125 Available online at www.sciencedirect.com ScienceDirect Structural Int grity 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. © 2018 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Gruppo Italiano Frattura (IGF) ExCo. IGF Workshop “Fracture and Structural Integrity” Synthesis, characterization and applications of nano/micro carbonaceous inerts: A review Anum Khalid a *, Rao Arsalan Khushnood a , Ayesha Mahmood a , Giuseppe Andrea Ferro b , Sajjad Ahmad c a National University of Sciences and Technology, Islamabad, Pakistan b Department of Structural, Geotechnical and Building Engineering, Politecnico di Torino, Turin, Italy c Department of Civil Enginee ing, Mirpur University of Science and Technology, Mirpur AK, Pakistan Abstract In rec nt years, a sci ific shift h s been observed towards the use of carbon based nano materials in different composite t enhance their mechanical and electrical properties. However, carbonaceous nano/micro inert particles synthesized through pyrolysis of agricultural and industrial wastes offer a very cost effective alternate to the commercially available carbon based materials such as carbon fibres, carbon nanotubes, graphene and graphene oxide. A comprehensive survey of reported data on the synthesis of carbon particles is presented in this article. The utilization of synthesized carbon particles as reinforcing material has also been explored together with an attempt of proposing future novel applications of synthesized carbon particles in cement based systems. In this pa er, meticulous efforts have bee made to overview the potential beneficial effects of synthesized c rbon particles intrusions to cementitiou systems for modifying/improving the r mechanical characteristics. © 2018 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Gruppo Italiano Frattura (IGF) ExCo. Keywords: Cement composites; Carbon nanomaterials; Carbonaceous inerts; Pyrolysis; EMI shielding Type your keywords here, separated by semicolons ; 1. Introduction There has been a growing trend in the utilization of carbon based nano/micro materials in variety of composites to enhance their physical, mechanical and elec rical properties. These nano/micro additions (Gogotsi & Presser, 2013) IGF Workshop “Fracture and Structural Integrity” Synthesis, characterization and applications of nano/micro carbonaceous inerts: A review Anum Khalid a *, Rao Arsalan Khushnood a , Ayesha Mahmood a , Giuseppe Andrea Ferro b , Sajj d Ahmad c a National University of Sciences and Technology, Islamabad, Pak stan b Structural, Geotechn cal and Building Eng neering, Politecnico di Torino, Turin, Italy c Department of Civil Engineering, Mirpur University of Science and Technology, Mirpur AK, Pakistan Abstract In recent years, a scientific shift has been observed towards the use of carbon b sed nan materials n different composites to enhance their mechanical and electrical properti s. However, carbonaceous nano/micro inert particles synth sized through pyrolysi of agricultural and industrial wastes offer a v ry cost effective alternate to the comm rcially available carbon based material such as carbon fibre , carbon na o ubes, graphen and graphene oxid . A comprehensive survey of reported data on the synth sis of carbon particles is present d in this article. The utilization of synthe ized carbon particles as reinforc g material has also been explored together with a attempt of proposing futur novel applications f synthesized carbo particl s in cement bas d systems. In this paper, m ticulo s e forts have been made to verv ew t e potential benefic al effects o synthesiz d carbon particles intrusions cementitious systems for modifying/ mproving heir chanical characteristics. © 2018 The Authors. Published by Elsevier B.V. Peer-review und r responsibility of the Gruppo Itali no Frattur (IGF) ExCo. Keywords: Cement compo ites; Carbon nanomaterials; Carbonaceous inerts; Pyrolysis; EMI shielding Type your keywords here, separated by semicolons ; 1. Introduction There has been a growing trend in the utilization of carbon based nano/ icro materials in variety of composites to enhance their physical, mechanical and electrical properties. These nano/micro additions (Gogotsi & Presser, 2013) © 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. Tel.: +923234015364. E-mail address: akhalid.phd16@nice.nust.edu.pk * Correspon ing aut or. Tel.: +923234015364. E-mail address: akhalid.phd16@nice.nust.edu.pk

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 Gruppo Italiano Frattura (IGF) ExCo. 10.1016/j.prostr.2018.06.019 * Corresponding author. Tel.: +351 218419991. E-mail address: amd@tecnico.ulisboa.pt 2452 3216 © 2018 Th Authors. Published by Elsevier B.V. Peer-review under responsibility of the Gruppo Italiano Frattura (IGF) ExCo. 2452-3216 © 2018 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Gruppo Italiano Frattura (IGF) ExCo.