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Non-destructive in-situ measurements on interface failure of brittle coating/ductile substrate systems by digital image correlation and acoustic emission techniques
Mao Weiguo 1 * #,D. J. Wu 2,C. Lu 3
1.Faculty of Materials, Optoelectronics and Physics, Xiangtan University
2.Key Laboratory of Low Dimensional Materials and Application Technology, Ministry of Education, Xiangtan University, Hunan 411105, China
3.Department of Mechanical Engineering, Curtin University, Western Australia 6845, Australia
*Correspondence author
#Submitted by
Subject:
Funding: the Young Teacher Fund of Ministry of Education(No.No. 200805301023), the Start-up Fund of Xiangtan University(No.No. 08QDZ07), This work has been supported by the Open Fund of Aeronautical Science and Technology Key Lab. of Aeronautical Test and Evaluatio(No.No. HK2009005), the National Natural Science Foundation of China(No.No. 10828205)
Opened online:22 June 2011
Accepted by: none
Citation: Mao Weiguo,D. J. Wu,C. Lu.Non-destructive in-situ measurements on interface failure of brittle coating/ductile substrate systems by digital image correlation and acoustic emission techniques[OL]. [22 June 2011] http://en.paper.edu.cn/en_releasepaper/content/4432729
 
 
In this paper, we proposed a non-destructive measurement method combined with digital image correlation and acoustic emission techniques to in-situ monitor the interface failure and internal damage of brittle coating/ductile substrate systems under different size scales. We established a good correspondence relationship between digital image correlation and acoustic emission results to judge coating failure. The method was utilized to successfully determine the fracture toughness of thermal barrier coating systems during bending tests.
Keywords:Experimental solids mechanics; digital image correlation; acoustic emission techniques
 
 
 

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