PSI - Issue 13

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 Structu al Integrity 13 (2018) 391–397 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2018) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Int grity 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 ECF22 organizers. ECF22 - Loading and Environmental effects on Structural Integrity Patented inventions of Serbian scientists in the field of seismic reliability of structures and landslide remediation with application Mirjana Jelić a,b* a Patent sector, Intellectual Property Office of the Republic of Serbia, Kneginje Ljubic 5, Belgrade 11000, Serbia b History and Philosophy of Natural Sciences and Technology, University of Belgrade, Studentski trg 3, Belgrade 11000, Serbia Abstract Having in mind that on the territory of the Republic of Serbia patent protectio of domestic inventions has been at the level of 20% of the total number of patents granted by the European Patent Office o inventors from Europe in the past twenty years in the area of seismic reliability of structures and landslide remediation, this work complements research on the continuity in the application of exceptional technical solutions of Serbian scientists in the field of civil engineering, that has been started with the work with title: Common characteristics of main contributions of Roger Boscovich, Milutin Milanković and Branko Žeželj to the development of c ivil engineering, 2017. Bearing in mind that Žeželj has been active in pa tent protection of his numerous inventions, during second half of the 20 th century, this paper presents systematic overview of patented inventions created in 21 st century by Serbian scientists and inventors in the field of seismic safety of structures and landslide remediation, as well as examples of their specific application. © 2018 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ECF22 organizers. Keywords: seismic reliability, earthquake, rebuilding landslide, civil engineering, invention, patent 1. Introduction Based on the date of publication of granted patent, according to the data available from the Espacenet (database of the EPO which contains more than 100 million patent documents from around the world), for the past 20 years (as this is maximum term of patent) the number of patented inventions of Serbian inventors and scientists in the field of seismic reliability of structures and landslide remediation which were granted on the territory of the Republic of Serbia was at the level of 20% of the total number of patents granted by the European Patent Office (EPO) to inventors from Europe (8 out ECF22 - Loading and Environmental effects on Structural Integrity Patented inventions of Serbian scientists in the field of seismic reliability of structures nd landslide remediation with application Mirjana Jelić a,b* a Patent sector, Intellectual Property Office of the Republic of Serbia, Kneginje Ljubice 5, Belgrade 11000, Serbia b History nd Philosophy of Natural Sci nces and Tec nology, University of Belgrad , Studentski trg 3, B lgrade 11000, Serbia Abstract Having in mind that on the territory of the Republic of Serbia patent protection of domestic inventions has been at the level of 20% of the total numb r of patents granted by the Europea Pa ent Off ce to inventors f o Europe in the past twe ty years in the area f seismic reliability of structures and landslide remediation, this work complements research o t continuity in the application f exceptional technical solutions of Serbian scientists in the field of civil engine ring, that has been started with the work with title: Comm characteristics of main contributions of Roger Boscovich, Milutin Milanković and Branko Žeželj to the development of c ivil engineering, 2017. Bearing in mind that Žeželj has been active in pa tent protection of his numerous inv nti ns, during seco d half of the 20 th century, this paper presents systematic overview of patented inventions created in 21 st century by Serbian scie tists and inventors i the field of seismic safety of structures and landslide remediation, as well as examples of their specific application. © 2018 The Aut ors. Published by Elsevier B.V. Peer-review under responsibility of the ECF22 organizers. Keywords: seismic reliabili y, ear hquake, rebuilding landslide, civil engineering, invention, patent 1. In roduction Based on the date of publication of granted patent, according to the data available from the Espacenet (database of the EPO which contains more than 100 million patent documents from around the world), for the past 20 years (as this is maximum term of patent) the number of patented inventions of Serbian inventors and scientists in the field of seismic reliability of structures and landslide remediation which were granted on the territory of the Republic of Serbia was at the level of 20% of th total number of pat nts granted by the European Patent Office (EPO) to inventors from Europe (8 out © 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.: +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 organizers. * Corresponding author. Tel.: + 381112025924; fax: + 381113112 377 E-mail address: mjelic@zis.gov.rs; mjelicjm@gmail.com * Corresponding author. Tel.: + 381112025924; fax: + 381113112 377 E-mail ad ress: mjelic@zis.gov.rs; mjelicjm@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  2018 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ECF22 organizers. 10.1016/j.prostr.2018.12.065