PSI - Issue 13
ScienceDirect Available online at www.sciencedirect.com Av ilable o line at www.sciencedire t.com ScienceDirect Structural Integrity Procedia 00 (2016) 000 – 000 Procedia Structural Integrity 13 (2018) 2114–2119 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
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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 Applied problems of fracture mechanics, resource and safety of technical systems V. Moskvichev a * a Institute of Computation Technologies SB RAS, Mira, 53, Krasnoyarsk, 660049, Russia Abstract The development trends of technical systems from p int of view of reliability, risk-analysis and safety are considered. The types of limit states are formulated and the results of experimental determinations of fracture toughness characteristics are given. Also examples of using the reliability theory, risk-analysis and f acture mecha ics methods are presented t solve various applied problems. © 2018 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ECF22 organizers. Keywords: structural materials, life time, safety, technical systems ECF22 - Loading and Environmental effects on Structural Integrity Applied problems of fracture mechanics, resource and safety of technical systems V. Moskvichev a * a Institute of Computati n T chnolo ies SB RAS, Mira, 53, Krasnoyarsk, 660049, Russia Abstract The development trends of technical systems from point of view of reliability, risk-analysis and safety are considered. The types of limit states ar formulated and the results o experimental determinations of fracture t ughness characteristics are given. Also examples of using the r liability theory, risk-analysis and fracture mechanics methods are presented to solve various applied problem . © 2018 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ECF22 organizers. Keywords: structural materials, life time, safety, technical systems
Nomenclature ( ) overall level of security ሺሻ risk ( ) robustness ( ) security ሺሻ reliability ( ) durability ( ) strength Ф Nomenclature ( ) overall level of security ሺሻ risk ( ) robustness ( ) security ሺሻ reliability ( ) durability ( ) strength Ф σ (e)
© 2016 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of PCF 2016. characteristic for the limit state
characteristic for the limit state parameters of stress-strain state
Keywords: High Pressure Turbine Blade; Creep; Finite Element Method; 3D Model; Simulation. parameters of stress-strain state σ (e)
* 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.:+7-391-227-29-12; fax: +7-391-212-42-88. E-mail address: krasn@ict.nsc.ru * Corresponding author. Tel.:+7-391-227-29-12; fax: +7-391-212-42-88. E-mail ad ress: krasn@ict.nsc.ru
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.2018.12.199
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