PSI - Issue 5

ScienceDirect Available online at www.sciencedirect.com Av ilable o line at ww.sciencedire t.com cienceDirect Structural Integrity Procedia 00 (2016) 000 – 000 Procedia Structu al Integrity 5 (2017) 675–682 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2017) 000 – 000 il l li t . i ir t. tructural Integrity rocedia 00 (2017) 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. 2nd International Conference on Structural Integrity, ICSI 2017, 4-7 September 2017, Funchal, Madeira, Portugal Polyamide/Polypropylene/graphene oxide nanocomposites with functional compatibilizers: Morpho-structural and physico mechanical characterization L. ALEXANDRESCU a , M. SÖNMEZ a , M GEORGESCU a , M. NIŢUICĂ a , A. FICAI b , R. TRUSCA b , D. GURĂU a , L.TUDOROIU c * a INCDTP - Division Leather and Footwear Research Institute, 93 Ion Minulescu St., sector 3, Bucharest, România, laurentia.alexandrescu@icpi.ro, icpi@icpi.ro; b Faculty of Applied Chemistry and Materials Science, University POLITEHNICA of Bucharest, 1 Polizu St., Bucharest,Romania, anton.ficai@upb.ro; c SC RONERA SA, 3 Serelor St., Bascov, Arges, 117045, Romania, Nanofilled polymeric matrices have de onstrated remarkable echanical, electrical, and thermal properties. Compounding polymers with nanofiller is widely used for the preparation of new materials. Polyamide/polypropylene (PA/PP) composites are interesting because both components are relatively eap, with advantageous properties, and are processable by m lt blending. The compatibilisation of binary polymer compoun s can be m de by th addition of graft opoly er, segme ts of wh ch have phy ical or chemical affinity with t o immiscible homopolymers. In this case, polypropylene grafted with maleic anhydride (PP-g-MA) it was used. Polymer nanocomp sit s containing grap ite have been considered as a n w generation of comp sites material due to their xpected unique properties attribute to the high aspect ratio of the inorganic pellets. Combined ef ects of graphite treatment and compatibilizer polymers (PP-g-MA) on the structure and properties of PA/PP/PP-g-MA/graphene oxide composites were studies. The optimum formulation was used to prepare a series of nanocomposites under different technological conditions. The nanocomposites PA/PP/PP-g-MA/graphene oxide were characterized by scanning electron microscopy (SEM), Fourier transformation infrared spectrum (FT-IR) and physico- echanical. © 2017 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Scientific Com ittee of ICSI 2017. tr t r l I t rit , I I , - t r , l, ir , rt l . a , . , a , . a , . CAI b , . TRUSCA b , D. GURĂU a , L.TUDOROIU c * a INCDTP - Division Leather and oot ear esearch Institute, 93 Ion inulescu St., sector 3, ucharest, o ânia, laurentia.alexandrescu icpi.ro, icpi icpi.ro; b aculty of Applied Chemistry and aterials Science, niversity I I of ucharest, 1 olizu St., ucharest, o ania, anton.ficai upb.ro; c S S , 3 Serelor St., ascov, rges, 117045, o ania, str ct Nanofilled polymeric atrices a e em strate re ar a le ec a ical, electrical, a t er al r erties. i l ers it a filler is i el se f r t e re arati f e aterials. l a i e/ l r le e ( / ) c sites are i teresti eca se t c e ts are relati el chea , it a a ta e s r erties, a are r cessa le elt le i . e c ati ilisati f i ar l er c ds ca e a e t e a iti f raft c l mer, se ents f ic a e sical r c e ical affi it it t i isci le l ers. I t is case, l r le e rafte it aleic a ri e ( - - ) it as se . l er a c sites c tai i ra ite a e ee c si ere as a e e erati f c sites aterials e t t eir e ecte i r erties attri te t t e i as ect rati f t e i r a ic ellets. i e ef ects f ra ite treat e t a c ti ilizer l ers ( - - ) t e str ct re a r rtie f / / - - / ra e e i e c sites ere st ies. e ti f r lati as se t re are a series f a c sites er iffere t tec l ical c iti s. e a c sites / / - - / ra e i e ere c aracterize sca i electr icr sc ( ), rier tra sf r ati i frare s ectr ( -I ) a sic - ec a ical. e t rs. lis e lse ier B.V. Peer-re ie er r s si ilit f t e ci tific ittee f I I . © 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: High Pressure Turbine Blade; Creep; Finite Element Method; 3D Model; Simulation. Abstract I t r ti l f r

Keywords: nanocomposites; polyamide; graphene oxide ey ords: nanoco posites; polya ide; graphene oxide

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.2017.07.042 * 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 he uthors. ublished by lsevier . . eer-re ie er res si ilit f t e cie tific ittee f I I . * Corresponding autor - L. Alexandrescu; Tel.:+4021 3235060; fax:+4021 3235280. E-mail address: laurentia.alexandrescu@icpi.ro * orresponding autor - . lexandrescu; el.: 4021 3235060; fax: 4021 3235280. - ail address: laurentia.alexandrescu icpi.ro