skip to main content

Title: Behavior of nanoporous thermal barrier coatings under cyclic thermal loading. Computer-aided simulation

The work presents the development of new algorithms for calculating the fraction of thermal energy dissipated during the irradiation on the inner surface of pores. On the basis of these algorithms, the simulation of heat transfer in three-layered systems was carried out taking into account the dissipation of thermal energy in specimens having different porosity. We have performed quantitative estimates of the portion of dissipating thermal energy and its influence on the distribution of thermal stresses in thermal barrier coating systems. It was demonstrated that the presence of pores with a large internal surface area in the intermediate layer material enables two-fold decrease of the internal thermal stresses.
Authors:
;  [1] ; ;  [1] ;  [2] ;  [3]
  1. Institute of Strength Physics and Materials Sciences SB RAS, Tomsk, 634055 (Russian Federation)
  2. (Russian Federation)
  3. University of Padua, Vicenza, 36100 Italy (Italy)
Publication Date:
OSTI Identifier:
22492571
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1683; Journal Issue: 1; Conference: International conference on advanced materials with hierarchical structure for new technologies and reliable structures 2015, Tomsk (Russian Federation), 21-25 Sep 2015; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ALGORITHMS; COATINGS; COMPUTERIZED SIMULATION; DISTRIBUTION; HEAT TRANSFER; IRRADIATION; LOADING; POROSITY; POROUS MATERIALS; SURFACE AREA; SURFACES; THERMAL BARRIERS; THERMAL STRESSES