PSI - Issue 14

ScienceDirect Available online at www.sciencedirect.com Av ilable o line at ww.sciencedire t.com ScienceDirect Structural Integrity Procedia 00 (2016) 000 – 000 Procedia Structu al Integrity 14 (2019) 395–4 2 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. © 2019 The Authors. Published by Elsevi r B.V. This is an open access articl unde the CC BY-NC-ND licens (https://crea iv commons.org/licens /by-nc- d/4.0/) Selection and p er-review unde responsibility of Peer-review under responsibility of the SICE 2018 organizers. 2nd International Conference on Structural Integrity and Exhibition 2018 Structural damage analysis of explosive testing experimental bay using HEXDAM Modelling software S.Thalapathi Raj a , SL Silan and Dr VK Devgan b * a Scientist & Divisional Head (SEED), TBRL-DRDO, Chandigarh b Group Director (SEED) TBRL-DRDO, Chandigarh Abstract Modelling of structural damages is a tool for making blast damage assessments resulting from an explosion on a localized area. This can be used as a damage/ injury assessment tool to determine the amount of blast damage/injury done to individual structures/ persons in a certain geographical area due o the d t natio of explosives at ground level or at a specified height above the ground. This paper deals with prediction the structural damages of an experimental bay building when subjected to explosive testing, using HEXDAM (High Explosive Damage Assessment Modelling) software. The modelling software helps to predict the blast parameters at various points and the structural damages caused to the structures with in a facility. The basic outputs of HEXDAM are designed to provide data such as before/after blast display; damage/injury table; damage vs distance; pressure contours; damage/injury contours and the data tables for overpressure, dynamic pressure and damage/injury at each grid point. The experimental bay building along with the facility building was scientifically modelled with the trial set up using this software. The structural damages to the experimental bay and the nearby facilities are analysed when the building set up is subjected to the explosive loading at the height of 1m. The over pressure data at various points from the ground level to the height of 9m have been generated in this modelling. The Outputs are in the form of Damage vs injury tables, before and after blast displays, pressure and damage vs injury contour plots and Da age, injury-versus-distance graphs. © 2018 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0/) Selection and peer-review under responsibility of Peer-review under responsibility of the SICE 2018 organizers. Keywords: Structural damage; Modelling; Blast parameters; Damage and injury levels 2nd International Conference on Structural Integrity and Exhibition 2018 Structural damage analysis of explosive te ting experimental bay using HEXDAM Modelling software S.Thalapathi Raj a , SL Silan and Dr VK Devgan b * a Scientist & Divisional Head (SEED), TBRL-DRDO, Chandigarh b Group Director (SEED) TBRL-DRDO, Chandigarh Abstract Modelling of tructural damages s a tool fo making blast amage assessments r ul ing fr m an explosion on a localized area. This ca be used as a d mage/ injury assessment ool to determine the amount of blast damage/injury done to individual structure / persons in a certa n geographical re due to the detonation of explosives at ground level or a a specified height abov the ground. Thi paper deals w th pre iction he st uctural damages of an experimental bay bu lding when subj cted to ex lo ive testing, using HEXDAM (High Explosive Dam ge Assessm nt Modelling) software. The mode ling software helps to predict th blast parameters at va ious p ints and the structural damag s caused to the structures with in a facil ty. The b sic outputs of HEXDAM are designed to provide data such as before/after blast display; dam ge/injury table; damage vs distance; pressure c ntou s; damage/inj ry contour and the data tables for overpressure, dynamic pr su d damage/i jury at each grid point. The experimental bay building along with the facility building was sci ntifically m delled with the trial set up using this software. The structural damag s to t e experimental bay and the nearby facilities are analysed when the building set up is subjected to the xplosive lo ding at the height f 1m. The over pressure data at various points from the ground level to the height of 9m have been generated in this modelling. The Outputs are in the form of Damage vs injury tables, before and after blast displays, pressure and damage vs injury contour plots and Damage, injury-versus-distance graphs. © 2018 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0/) S lection and peer-review under responsibility of P er-review u er responsibility of the SICE 2018 organizers.

© 2016 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of PCF 2016. Keywords: Structural damage; Modelling; Blast parameters; Damage and injury levels

Keywords: High Pressure Turbine Blade; Creep; Finite Element Method; 3D Model; Simulation.

* Corresponding author. Tel.: 01733307116; fax: 0172-2627506. E-mail address: thalaps@yahoo.com

2452-3216 © 2016 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Committee of PCF 2016. 2452-3216  2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0/) Selection and peer-review under responsibility of Peer-review under responsibility of the SICE 2018 organizers. 10.1016/j.prostr.2019.05.048 2452-3216 © 2018 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0/) Selection and peer-review under responsibility of Peer-review under responsibility of the SICE 2018 organizers. 2452-3216 © 2018 Th Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0/) Selection and peer-review under responsibility of Peer-review under responsibility of the SICE 2018 organizers. * Corresponding author. Tel.: 01733307116; fax: 0172-2627506. E mail address: t alaps@yahoo.com * Corresponding author. Tel.: +351 218419991. E-mail address: amd@tecnico.ulisboa.pt