High temperature digital image correlation evaluation of in-situ failure mechanism: An experimental framework with application to C/SiC composites

W. G. Mao; J. Chen; M. S. Si; R. F. Zhang; Q. S. Ma; D. N. Fang; X. Chen

doi:10.1016/j.msea.2016.04.021

High temperature digital image correlation evaluation of in-situ failure mechanism: An experimental framework with application to C/SiC composites

W. G. Mao^*, J. Chen, M. S. Si, R. F. Zhang, Q. S. Ma, D. N. Fang, X. Chen

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

30 Citations (Scopus)

Abstract

A high temperature digital image correlation (DIC) technique was developed, which was applied to study the in-situ fracture behavior of a carbon fibre reinforced silicon carbide matrix (C/SiC) composite. The displacement distribution and cracking information of the C/SiC single edge notched beam specimen can be monitored real-time, thanks to the improved DIC technique with special speckle patterns that can reach up to 1600 °C. The results showed that the brittle to ductile transition temperature of C/SiC composites is about 1300 °C. The new failure mechanisms of C/SiC composites at different experimental temperatures were further verified with the aid of X-ray diffraction and scanning electron microscope (SEM) techniques. In addition, the relationships between the fracture toughness, first-crack strength of C/SiC composites and environmental temperature were deduced. The proposed experimental method and testing results may shed some light on assessing the reliability and durability of C/SiC composites at high temperatures.

Original language	English
Pages (from-to)	26-34
Number of pages	9
Journal	Materials Science and Engineering: A
Volume	665
DOIs	https://doi.org/10.1016/j.msea.2016.04.021
Publication status	Published - 17 May 2016
Externally published	Yes

Keywords

Brittle to ductile transition
C/SiC composites
Digital image correlation
High-temperature testing
Mechanical properties

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10.1016/j.msea.2016.04.021

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title = "High temperature digital image correlation evaluation of in-situ failure mechanism: An experimental framework with application to C/SiC composites",

abstract = "A high temperature digital image correlation (DIC) technique was developed, which was applied to study the in-situ fracture behavior of a carbon fibre reinforced silicon carbide matrix (C/SiC) composite. The displacement distribution and cracking information of the C/SiC single edge notched beam specimen can be monitored real-time, thanks to the improved DIC technique with special speckle patterns that can reach up to 1600 °C. The results showed that the brittle to ductile transition temperature of C/SiC composites is about 1300 °C. The new failure mechanisms of C/SiC composites at different experimental temperatures were further verified with the aid of X-ray diffraction and scanning electron microscope (SEM) techniques. In addition, the relationships between the fracture toughness, first-crack strength of C/SiC composites and environmental temperature were deduced. The proposed experimental method and testing results may shed some light on assessing the reliability and durability of C/SiC composites at high temperatures.",

keywords = "Brittle to ductile transition, C/SiC composites, Digital image correlation, High-temperature testing, Mechanical properties",

author = "Mao, {W. G.} and J. Chen and Si, {M. S.} and Zhang, {R. F.} and Ma, {Q. S.} and Fang, {D. N.} and X. Chen",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier B.V.",

year = "2016",

month = may,

day = "17",

doi = "10.1016/j.msea.2016.04.021",

language = "English",

volume = "665",

pages = "26--34",

journal = "Materials Science and Engineering: A",

issn = "0921-5093",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - High temperature digital image correlation evaluation of in-situ failure mechanism

T2 - An experimental framework with application to C/SiC composites

AU - Mao, W. G.

AU - Chen, J.

AU - Si, M. S.

AU - Zhang, R. F.

AU - Ma, Q. S.

AU - Fang, D. N.

AU - Chen, X.

PY - 2016/5/17

Y1 - 2016/5/17

N2 - A high temperature digital image correlation (DIC) technique was developed, which was applied to study the in-situ fracture behavior of a carbon fibre reinforced silicon carbide matrix (C/SiC) composite. The displacement distribution and cracking information of the C/SiC single edge notched beam specimen can be monitored real-time, thanks to the improved DIC technique with special speckle patterns that can reach up to 1600 °C. The results showed that the brittle to ductile transition temperature of C/SiC composites is about 1300 °C. The new failure mechanisms of C/SiC composites at different experimental temperatures were further verified with the aid of X-ray diffraction and scanning electron microscope (SEM) techniques. In addition, the relationships between the fracture toughness, first-crack strength of C/SiC composites and environmental temperature were deduced. The proposed experimental method and testing results may shed some light on assessing the reliability and durability of C/SiC composites at high temperatures.

AB - A high temperature digital image correlation (DIC) technique was developed, which was applied to study the in-situ fracture behavior of a carbon fibre reinforced silicon carbide matrix (C/SiC) composite. The displacement distribution and cracking information of the C/SiC single edge notched beam specimen can be monitored real-time, thanks to the improved DIC technique with special speckle patterns that can reach up to 1600 °C. The results showed that the brittle to ductile transition temperature of C/SiC composites is about 1300 °C. The new failure mechanisms of C/SiC composites at different experimental temperatures were further verified with the aid of X-ray diffraction and scanning electron microscope (SEM) techniques. In addition, the relationships between the fracture toughness, first-crack strength of C/SiC composites and environmental temperature were deduced. The proposed experimental method and testing results may shed some light on assessing the reliability and durability of C/SiC composites at high temperatures.

KW - Brittle to ductile transition

KW - C/SiC composites

KW - Digital image correlation

KW - High-temperature testing

KW - Mechanical properties

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U2 - 10.1016/j.msea.2016.04.021

DO - 10.1016/j.msea.2016.04.021

M3 - Article

AN - SCOPUS:84962787119

SN - 0921-5093

VL - 665

SP - 26

EP - 34

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

ER -

High temperature digital image correlation evaluation of in-situ failure mechanism: An experimental framework with application to C/SiC composites

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Keywords

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