Journal Published Online: 19 March 2010
Volume 38, Issue 5

Measurement of Micro Region Creep Deformation in the Multi-Layer Coating with Digital Speckle Correlation System

CODEN: JTEVAB

Abstract

A micro region measuring system has been developed to achieve the time-dependent deformation of multi-layer coating at high temperature. The proposed system uses a long-distance microscope and digital speckle correlation method to evaluate the full creep strain fields, which is especially suited for the long-term measurement of the nonuniform deformation. The creep tension tests are performed to obtain the creep strain distribution and evolution inside the thermal barrier coating specimen. According to the deformation measured from different micro regions, we obtained some fundamental knowledge about the time-dependent behavior of the failure mechanism in multi-layer coatings. The accuracy of the new measuring system and the corresponding error analyses are also discussed in this paper.

Author Information

Chen, Jianjun
School of Mechanical and Power Engineering, East China Univ. of Science and Technology, Shanghai, China
Zhang, Hongyu
School of Mechanical and Power Engineering, East China Univ. of Science and Technology, Shanghai, China
Tu, Shantung
School of Mechanical and Power Engineering, East China Univ. of Science and Technology, Shanghai, China
Xuan, Fuzhen
School of Mechanical and Power Engineering, East China Univ. of Science and Technology, Shanghai, China
Wang, Zhengdong
School of Mechanical and Power Engineering, East China Univ. of Science and Technology, Shanghai, China
Pages: 6
Price: $25.00
Related
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Details
Stock #: JTE102024
ISSN: 0090-3973
DOI: 10.1520/JTE102024