PSI - Issue 5

ScienceDirect Available online at www.sciencedirect.com Av ilable o line at ww.sciencedire t.com Sci ceDirect Structural Integrity Procedia 00 (2016) 000 – 000 Procedia Struc ural Integrity 5 (2017) 1334–1341 ScienceDirect Structural Integrity Procedia 00 (2017) 000 – 000 Available onlin at www.scien edirect.com ScienceDirect Structural Integrity Procedia 00 (2017) 000 – 000

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www.elsevier.com/locate/procedia 2nd International Conference on Structural Integrity, ICSI 2017, 4-7 September 2017, Funchal, Madeira, Portugal Structural Integrity Evaluation of the “Constitución de 1812 bridge”, over the Cádiz bay (Cádiz, Spain) Manu l Angel Díaz Gar í a *, Sergio Cicero González b , Oscar Ramón Ramos Gutiérrez a,c a APIAXXI LOUIS BERGER IDC. PCTCAN Av. Albert Einstein 6, 39011 Santander, Cantabria, España. b LADICIM (Laboratorio de la División de Ciencia e Ingeniería de los Materiales) Universidad de Cantabria. E.T.S. de Ingenieros de Caminos, Canales y Puertos, Av. Los Castros 44, 39005 Santander, España c Dpto. Ingeniería Estructural y MecánicaUniversidad de Cantabria. E.T.S. de Ingenieros de Caminos, Canales y Puertos, Av. Los Castros 44, 39005 Santander, España * Contact: mdiaz@louisberger.com Abstract As required by the latest regulations, an inspection and maintenance plan has been drafted for “Constitución de 1812 bridge over the Cádiz bay” (Cadiz), which defines the tasks to be performed in the different elements of the bridge during its service life. The part of the plan related to the inspection of the steel structure has a section dedicated to the inspection of defects or notches that can be produced in the steel deck, providing critical defect sizes above which the safety of the structure would be compromised. With this purpose, in the most stressed points of th deck, the construction de ails which are more susceptible t fatigue have been id ntified. Fatigue tests of th se details have een performed to complete a structural integrity assessme which also com rises the determ nati of the material fracture tough ess and the d finition of critical crack sizes. The tests were carried ut on specimens obtained with the same ste l grades used in the bridge and with the same welding procedur s practiced in the structure. The results show that typical critical c ack sizes are around 12 mm, with structu al details having critical crack sizes around 6 m. 2nd International Conference on Structural Integrity, ICSI 2017, 4-7 September 2017, Funchal, Madeira, Portugal Str ctural Int grity Evaluation of the “Constitución de 1812 bridge”, over the Cádiz bay (Cádiz, Spain) Manuel Angel Díaz G rcía a *, Sergio Cicero González b , Oscar Ramón Ramos Gutiérrez a,c a APIAXXI LOUIS BERGER IDC. PCTCAN Av. Alb rt Einstein 6, 39011 Santander, Cantabria, España. b LADICIM (Laboratori de la División de Ci ncia e Ingeniería de los Materiales) Universidad de Cant bria. E.T.S. de Ingenieros de Caminos, a ales y Puertos, Av. Los Castros 44, 39005 Santander, España c Dpto. Ingeniería Estructural y MecánicaUniversidad de Cantabria. E.T.S. de Ingenieros de Caminos, Canales y Puertos, Av. Los Castros 44, 39005 Santander, España * Contact: mdiaz@louisberger.com Abstract As required by the latest regulations, an inspection and maintenance plan has been drafted for “Constitución de 1812 bridge over the Cádiz bay” (Cadiz), which defines the tasks to be performed in the different elements of the bridge during its service life. The part of the plan related to the inspection of the steel structure has a section dedicated to the inspection of defects or notches that can be produced in the steel deck, providing critical defect sizes above which the safety of the structure would be compromised. With this purpose, in the most stressed points of the deck, the construction details which are more susceptible to fatigue have been identified. Fatigue tests of these details have been performed to complete a structural integrity assessment which also comprises the determination of the material fracture toughness and the definition of critical crack sizes. The tests were carried out on specimens obtained with the same steel grades used in the bridge and with the same welding procedures practiced in the structure. The results show that typical critical crack sizes are around 12 mm, with structural details having critical crack sizes around 6 mm. 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. © 2017 The Authors. Published by Elsevier B.V. Peer-review under responsibility of he Scientific Committee of ICSI 2017. © 2017 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of ICSI 2017. © 2017 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of ICSI 2017

© 2016 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of PCF 2016. Keywords: : Inspec ion, fatigue, fracture, steel d ck. Keywords: High Pressure Turbine Blade; Creep; Finite Element Method; 3D Model; Simulation. Keywords: : Inspection, fatigue, fracture, steel deck.

* Corresponding author. E-mail address: mdiaz@louisberger.com

2452-3216 © 2016 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of PCF 2016. 2452-3216  2017 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of ICSI 2017 10.1016/j.prostr.2017.07.143 * Corresponding author. Tel.: +351 218419991. E-mail address: amd@tecnico.ulisboa.pt 2452-3216 © 2017 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of ICSI 2017. 2452-3216 © 2017 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of ICSI 2017. * Corresponding author. E-mail address: mdiaz@louisberger.com