PSI - Issue 13

ScienceDirect Available online at www.sciencedirect.com Available o line at ww.sciencedire t.com cienceDirect Structural Integrity Procedia 00 (2016) 000 – 000 Procedia Structural Integrity 13 (2018) 2137–2142 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. © 2018 The Authors. Published by Elsevie B.V. Peer-review under responsibility of the ECF22 organiz rs. ECF22 - Loading and Environmental effects on Structural Integrity Effect of sand particles on the Erosion-corrosion for a different locations of carbon steel pipe elbow M. Amara a,b , B. G. N. Muthanna b,c , M. Tahar Abbes a , M. Hadj Meliani b *, a Laboratory of Mechanics and Energetics, Hassiba Benbouali University of Chlef. Hay salem, 02000, Algeria b Laboratory of Physics and Theoretical Physics of Materials, Hassiba Benbouali University of Chlef. Hay salem, 02000, Algeria. c Laboratory of Rheology and Mechanics, Hassiba Benbouali University of Chlef. Hay salem, 02000, Algeria. Abstract Erosion combined with corrosio becomes the most problem in the seawater de alination plant due t the fast deterioration of the internal line pipe. Corrosion products were characterized for surface morphology, phase composition and element concentration. In this paper, the prediction of erosion of solid particles in geometry of the elbow is performed by means of a numerical simulation. Fluid Dynamics (CFD) simulations with FLUENT software are performed to study erosion prediction in 3-D, 90 ∘ elbow for phase (liquid and solid particles), For a range of particle sizes from 2 mm ,0.4mm and 4µm for different valve opening angles in order to obtain the real tool failure reasons of erosion. The obtained conclusion by analyzing the reasons, applies in the middle make downhole tools to control and prevent erosion failure phenomenon. © 2018 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ECF22 organizers. Keywords: Erosion-corrosion, pipeline erosion, fluid flow, sea sand. 1. Introduction Erosio -corrosion is a seri us threat to pipeline sustainability; most erosion approaches in the literature and in practice assume that the erosion can be adequately controlled at level way through the use of appropriate technologies. Corrosion-erosion wear is a major problem for industrial piping, generally posed a significant operating problem and reliability in the aerospace, pneumatic, transportation and other industries. Erosion by sand particles is a problem in desalination pipelines. Different types of erosion-corrosion occur depending on the concentration of particles in the fluid. The implementation conditions cause a depletion rate of 20% mm of elbow/ year during 2 years of operation [1]. This phenomenon in the elbows was analyzed experimentally or numerically by many researchers in order to resolve the agreement of hydrodynamics and the distribution of sand particles [2]. The aerodynamic tests of the flow ECF22 - Loading and Environmental effects on Structural Integrity Effect of sand particles on the Erosion-corrosion for a different locations of carbon steel pipe elbow M. A ara a,b , B. G. N. Muthanna b,c , M. Tahar Abbes a , M. Hadj Meliani b *, a Laboratory of Mechanics and Energetics, Hassiba Benbouali University of Chlef. Hay salem, 02000, Algeria b Laboratory of Physics and T eoretical Physics of Materials, Hassib Benboual University of Chlef. Hay salem, 02000, Algeria. c Laboratory of Rheol gy and Mechanics, H ss ba Benbouali U iversity of Chlef. Hay salem, 02000, Algeria. Abstract Erosion combined with corrosion becomes the most problem in the seawater desalination plant due to the fast deterioration of the internal line p p . Corrosion products w r characterized for su face m rphology, phas composition and elem nt concentration. I this paper, the prediction of erosion of solid particles in geometry of the elbow is erformed by means of a nu eri al simul Fluid Dynamics (CFD) simulations with FLUENT software are perf rmed to study erosion prediction in 3-D, 90 ∘ elbow for phase (liquid a d solid particles), For a range of particle izes from 2 mm ,0.4mm and 4µm f r different valve opening angles in order to obtain the real tool failure e so s of erosion. The obtained conclusion by analyzing the r asons, applies in the middle make d wnhole tools to c ntrol and prevent erosi n failure phenomenon. © 2018 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ECF22 organizers. Keywords: Erosion-corrosion, pipeline erosion, fluid flow, sea sand. 1. Intro uction Erosion-corrosion is a serious threat to pipeline sustainability; most erosion approaches in the literature and in practice assume that the erosion can be dequately controlled at level way through the use of appropriate technologies. Corrosion-erosion wear is a major problem for industrial piping, g ner lly p sed a significant operating problem and reliability in the aerospace, pneumatic, transportation and other industries. Erosion by sand particles is a problem in des lination pipelines. Different types of erosion-c rrosion occur depending n the concentration of particles in the fluid. The implementation conditions cause a depletion rate of 20% mm of elbow/ year during 2 years of operation [1]. This pheno enon in the elbows was analyzed experimentally or numerically by many researchers in order to resolve the agreement of hydrodynamics and the distribution of sand particl s [2]. The aerodynamic tests of the flow © 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.

* M. Hadj Meliani. Tel.: 213 796281441. E-mail address: m.hadjmeliani@univ-chlef.dz * M. Hadj Meliani. Tel.: 213 796281441. E-mail address: m.hadjmeliani@univ-chlef.dz

* 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.

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.2018.12.151