PSI - Issue 13

ScienceDirect Available online at www.sciencedirect.com Available o line at www.sciencedire t.com ScienceDirect Structural Integrity Procedia 00 (2016) 000 – 000 Procedia Structu al Integrity 13 (2018) 218–221 Available online at www.sciencedirect.com ScienceDirect StructuralIntegrity Procedia 00 (2018) 000–000 Available online at www.sciencedirect.com ScienceDirect StructuralI tegrity 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 Effect of Pharmaceutical Wastes Usage as Partial Replacement of Cement on the Durability of High-Performance Concrete Talah Aissa a *, Belaid Rachid b , Fattoum Kharchi c a,b,c University of sciences and technology,Bp32 BabEzzouar,Algiers 16111,Algeria Abstract This paper reports an experimental study of the influence of ash produced from incinerated hospital wastes used as partial substitute for Portland cement (PC) on the mechanical properties and durability of high performance concretes. The analysis of the experimental results on concrete at 10% content of ash resulting from incineration of pharmaceutical wastes with a fineness modulus of 8000 cm 2 /g, in a chloride environment, showed that it contributes positively to the perfection of its mechanical characteristics, its durability with respect to migration of chloride ions and oxygen permeability. On the basis of the experimen s performed, it can be concluded that the ash is suitable for formulation of high performance concretes (HPC) and their properties are significantly better compared to the reference concrete (RC). This paper points out the directions for the proper uses of ash of pharmaceutical wastes in co crete. © 2018 The Authors. Published by Elsevier B.V. Peer-revi w under responsibility of th ECF22 organiz rs. Keywords: ash , pharmaceutic l wa tes,durability,concrete; 1. Introduction The worldwide demand for high-performance cement-based materials has increased and predictions are that it will be widely used in construction industry during the early 21st century. Economical and environmental considerations had a crucial role in the supplementary cementing material usage as well as better engineering and performance propertie [E.Badogiannis et al (2004)- A.A, Ra ezanianpour et al(1995)]. This study has been exclusively focused on the hardened properties of the high performance concrete containing an optimum quantity of pharmaceutical ECF22 - Loading and Environmental effects on Structural Integrity Effect of Pharmaceutical Wastes Usage as Partial Replacement of Cement on the Durability of High-Performance Concrete Talah Aissa a *, Belaid Rachid b , Fattoum Kharchi c a,b,c University of sciences and technology,Bp32 BabEzzouar,Algiers 16111,Algeria Abstract This paper reports an experimental study of the influence of ash produced from incinerated hospital wastes used as partial substitute for Portland cement (PC) on the mecha ical properties and d rability of high performance concretes. The analysis of the experimental results on concrete at 10% content f ash resulting from incineration of pharmaceutical wastes with a fineness modulus of 8000 cm 2 /g, in a chloride envir nment, showed that it contributes positively to the perfection of its mechanical characteristics, its durability with respect to migration f chloride ions and oxygen permeability. On the basis f the experiments performed, it can be concluded that the ash is suitable for formulation of high performance concretes (HPC) and their properties are significantly better compared to the reference concrete (RC). This paper points out the directions for the proper uses of ash of pharm ceutical wastes in concrete. © 2018 The Aut ors. Published by Elsevier B.V. Peer-review under responsibility of the ECF22 organizers. Keywords: ash , pharmaceutical wastes,durability,concrete; 1. Introduction The worldwide demand for high-performance cement-based materials has increased and predictions are that it will be widely used in construction indu try during the early 21st century. Economical and environmental considerations had a crucial rol in the supplementary cementing material usage as well as better engineering and performance properties [E.Badogiannis et al (2004)- A.A, Ramezanianpour et al(1995)]. This study has been exclusively focused on the hardened properties of the high performance concrete c ntaining an optimum quantity of pharmaceutical © 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 responsibility of the ECF22 organizers. * Talah Aissa. Tel.: +2130247224; fax: +21321247914. E-mail address:talahay@yahoo.fr * Talah Aissa. Tel.: +2130247224; fax: +21321247914. E-mail address:talahay@yahoo.fr

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.2018.12.036