Finite element analysis of stress distribution in thermal barrier coatings

被引：242

作者：

Bialas, Marcin ^{[1
]}

机构：

[1] Inst Fundamental Technol Res, PL-00049 Warsaw, Poland

来源：

SURFACE & COATINGS TECHNOLOGY | 2008年 / 202卷 / 24期

关键词：

Creep; Burner rig test; Plasma spraying; Multilayer; Cohesive zone modelling;

D O I：

10.1016/j.surfcoat.2008.06.178

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A numerical simulation of crack development within APS TBC systems is presented. The TGO thickening and creep deformation of all system constituents is modelled. Two dimensional periodic unit cell is used to examine the effect of interfacial asperity on stress distribution and subsequent delamination of APS TBC. A study of cyclic loading and of creep of the base material on the stress distribution close to the asperity at the TGC/BC interface is made, revealing a small influence influence of both on the stress state in the thermal barrier coating system Subjected to temperature loading. Cohesive zone elements at the oxide/ceramic interface model the development of the interfacial micro-crack. The finite element analysis shows that the development of the interfacial crack allows for a micro-crack formation within APS TBC. Subsequent TGO growth results in a tensional zone within the oxide layer. Linking of the micro-cracks at the interface and within TBC through TGO Could lead to a coating delamination in the unit cell. (c) 2008 Elsevier B.V. All rights reserved

引用

页码：6002 / 6010

页数：9

共 34 条

[21] Modelling of TBC system failure: Stress distribution as a function of TGO thickness and thermal expansion mismatch [J].

Martena, M ;

Botto, D ;

Fino, P ;

Sabbadini, S ;

Gola, MM ;

Badini, C .

ENGINEERING FAILURE ANALYSIS, 2006, 13 (03) :409-426

[22] Numerical approach to hole shape effect on film cooling effectiveness over flat plate including internal impingement cooling chamber [J].

Miao, JM ;

Wu, CY .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2006, 49 (5-6) :919-938

[23] FAILURE MECHANISMS OF THERMAL BARRIER COATINGS EXPOSED TO ELEVATED-TEMPERATURES [J].

MILLER, RA ;

LOWELL, CE .

THIN SOLID FILMS, 1982, 95 (03) :265-273

[24] A simplified analysis of interface failure under compressive normal stress and monotonic or cyclic shear loading [J].

Mróz, Z ;

Bialas, M .

INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS, 2005, 29 (04) :337-368

[25] Modelling of the mechanical behaviour of the single-crystal turbine alloy CMSX-4 during thermomechanical loading [J].

Schubert, F ;

Fleury, G ;

Steinhaus, T .

MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING, 2000, 8 (06) :947-957

[26] Numerical investigation of residual stress fields and crack behavior in TBC systems [J].

Sfar, K ;

Aktaa, J ;

Munz, D .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2002, 333 (1-2) :351-360

[27]

Thoe TB, 1999, J MATER PROCESS TECH, V93, P323

[28]

TRUNOVA O, 2004, CERAM ENG SCI P, V25, P411

[29]

TRUNOVA O, 2006, THESIS RWTH AACHEN

[30] Laser drilling of cooling holes through plasma sprayed thermal barrier coatings [J].

Voisey, KT ;

Clyne, TW .

SURFACE & COATINGS TECHNOLOGY, 2004, 176 (03) :296-306

← 1 2 3 4 →