Study of mechanical properties and cracking extension resistance behavior of C/SiC composites by single edge notched beam and digital image correlation techniques

W. G. Mao; J. Chen; M. S. Si; R. F. Zhang; Z. B. Peng; C. Y. Dai; Q. S. Ma; D. N. Fang

doi:10.1016/j.msea.2015.09.101

Study of mechanical properties and cracking extension resistance behavior of C/SiC composites by single edge notched beam and digital image correlation techniques

W. G. Mao^*, J. Chen, M. S. Si, R. F. Zhang, Z. B. Peng, C. Y. Dai, Q. S. Ma, D. N. Fang

^*Corresponding author for this work

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

26 Citations (Scopus)

Abstract

The carbon fiber reinforced silicon carbide matrix (C/SiC) composites were prepared by using precursor infiltration and pyrolysis method. Fracture characteristics of C/SiC materials were studied by single edge notched beam with the aid of digital image correlation (DIC) technique. It was found that DIC played an important role in in-situ monitoring full/local strain evolution and cracking growth during bending tests, which was useful for revealing potential failure micro-mechanisms of C/SiC composites. The results showed that the average fracture toughness K_IC and fracture strength of C/SiC were estimated as 7.81±0.12MPam^1/2 and 223.23±3.5MPa, respectively. Moreover, the crack extension resistance curves (R-curve) in terms of stress intensity (K_R-curves) were determined on the basis of the crack initiation toughness K_IC. The values varied from 4.68MPam^1/2 to 16.83MPam^1/2 during the R-curve tests.

Original language	English
Pages (from-to)	222-228
Number of pages	7
Journal	Materials Science and Engineering: A
Volume	649
DOIs	https://doi.org/10.1016/j.msea.2015.09.101
Publication status	Published - 1 Jan 2016
Externally published	Yes

Keywords

Bending test
C/SiC composite
Digital image correlation
Mechanical properties

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10.1016/j.msea.2015.09.101

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@article{59568c3fbb0e4908b4d5dd5187fb0092,

title = "Study of mechanical properties and cracking extension resistance behavior of C/SiC composites by single edge notched beam and digital image correlation techniques",

abstract = "The carbon fiber reinforced silicon carbide matrix (C/SiC) composites were prepared by using precursor infiltration and pyrolysis method. Fracture characteristics of C/SiC materials were studied by single edge notched beam with the aid of digital image correlation (DIC) technique. It was found that DIC played an important role in in-situ monitoring full/local strain evolution and cracking growth during bending tests, which was useful for revealing potential failure micro-mechanisms of C/SiC composites. The results showed that the average fracture toughness KIC and fracture strength of C/SiC were estimated as 7.81±0.12MPam1/2 and 223.23±3.5MPa, respectively. Moreover, the crack extension resistance curves (R-curve) in terms of stress intensity (KR-curves) were determined on the basis of the crack initiation toughness KIC. The values varied from 4.68MPam1/2 to 16.83MPam1/2 during the R-curve tests.",

keywords = "Bending test, C/SiC composite, Digital image correlation, Mechanical properties",

author = "Mao, {W. G.} and J. Chen and Si, {M. S.} and Zhang, {R. F.} and Peng, {Z. B.} and Dai, {C. Y.} and Ma, {Q. S.} and Fang, {D. N.}",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier B.V.",

year = "2016",

month = jan,

day = "1",

doi = "10.1016/j.msea.2015.09.101",

language = "English",

volume = "649",

pages = "222--228",

journal = "Materials Science and Engineering: A",

issn = "0921-5093",

publisher = "Elsevier Ltd.",

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TY - JOUR

T1 - Study of mechanical properties and cracking extension resistance behavior of C/SiC composites by single edge notched beam and digital image correlation techniques

AU - Mao, W. G.

AU - Chen, J.

AU - Si, M. S.

AU - Zhang, R. F.

AU - Peng, Z. B.

AU - Dai, C. Y.

AU - Ma, Q. S.

AU - Fang, D. N.

PY - 2016/1/1

Y1 - 2016/1/1

N2 - The carbon fiber reinforced silicon carbide matrix (C/SiC) composites were prepared by using precursor infiltration and pyrolysis method. Fracture characteristics of C/SiC materials were studied by single edge notched beam with the aid of digital image correlation (DIC) technique. It was found that DIC played an important role in in-situ monitoring full/local strain evolution and cracking growth during bending tests, which was useful for revealing potential failure micro-mechanisms of C/SiC composites. The results showed that the average fracture toughness KIC and fracture strength of C/SiC were estimated as 7.81±0.12MPam1/2 and 223.23±3.5MPa, respectively. Moreover, the crack extension resistance curves (R-curve) in terms of stress intensity (KR-curves) were determined on the basis of the crack initiation toughness KIC. The values varied from 4.68MPam1/2 to 16.83MPam1/2 during the R-curve tests.

AB - The carbon fiber reinforced silicon carbide matrix (C/SiC) composites were prepared by using precursor infiltration and pyrolysis method. Fracture characteristics of C/SiC materials were studied by single edge notched beam with the aid of digital image correlation (DIC) technique. It was found that DIC played an important role in in-situ monitoring full/local strain evolution and cracking growth during bending tests, which was useful for revealing potential failure micro-mechanisms of C/SiC composites. The results showed that the average fracture toughness KIC and fracture strength of C/SiC were estimated as 7.81±0.12MPam1/2 and 223.23±3.5MPa, respectively. Moreover, the crack extension resistance curves (R-curve) in terms of stress intensity (KR-curves) were determined on the basis of the crack initiation toughness KIC. The values varied from 4.68MPam1/2 to 16.83MPam1/2 during the R-curve tests.

KW - Bending test

KW - C/SiC composite

KW - Digital image correlation

KW - Mechanical properties

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U2 - 10.1016/j.msea.2015.09.101

DO - 10.1016/j.msea.2015.09.101

M3 - Article

AN - SCOPUS:84943634113

SN - 0921-5093

VL - 649

SP - 222

EP - 228

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

ER -

Study of mechanical properties and cracking extension resistance behavior of C/SiC composites by single edge notched beam and digital image correlation techniques

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Keywords

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