Acoustic emission characterization of fracture toughness for fiber reinforced ceramic matrix composites

Hui Mei; Yuyao Sun; Lidong Zhang; Hongqin Wang; Laifei Cheng

doi:10.1016/j.msea.2012.09.081

Acoustic emission characterization of fracture toughness for fiber reinforced ceramic matrix composites

Hui Mei, Yuyao Sun, Lidong Zhang, Hongqin Wang, Laifei Cheng

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

32 Scopus citations

Abstract

The fracture toughness of a carbon fiber reinforced silicon carbide composite was investigated relating to classical critical stress intensity factor K_IC, work of fracture, and acoustic emission energy. The K_IC was obtained by the single edge notch beam method and the work of fracture was calculated using the featured area under the load-displacement curves. The K_IC, work of fracture, and acoustic emission energy were compared for the composites before and after heat treatment and then analyzed associated with toughening microstructures of fiber pullout. It indicates that the work of fracture and acoustic emission energy can be more suitable to reflect the toughness rather than the traditional K_IC, which has certain limitation for the fracture toughness characterization of the crack tolerant fiber ceramic composites.

Original language	English
Pages (from-to)	372-376
Number of pages	5
Journal	Materials Science and Engineering: A
Volume	560
DOIs	https://doi.org/10.1016/j.msea.2012.09.081
State	Published - 10 Jan 2013

Keywords

Acoustic emission
Ceramic matrix composites
Fracture toughness
Work of fracture

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10.1016/j.msea.2012.09.081

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title = "Acoustic emission characterization of fracture toughness for fiber reinforced ceramic matrix composites",

abstract = "The fracture toughness of a carbon fiber reinforced silicon carbide composite was investigated relating to classical critical stress intensity factor KIC, work of fracture, and acoustic emission energy. The KIC was obtained by the single edge notch beam method and the work of fracture was calculated using the featured area under the load-displacement curves. The KIC, work of fracture, and acoustic emission energy were compared for the composites before and after heat treatment and then analyzed associated with toughening microstructures of fiber pullout. It indicates that the work of fracture and acoustic emission energy can be more suitable to reflect the toughness rather than the traditional KIC, which has certain limitation for the fracture toughness characterization of the crack tolerant fiber ceramic composites.",

keywords = "Acoustic emission, Ceramic matrix composites, Fracture toughness, Work of fracture",

author = "Hui Mei and Yuyao Sun and Lidong Zhang and Hongqin Wang and Laifei Cheng",

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doi = "10.1016/j.msea.2012.09.081",

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T1 - Acoustic emission characterization of fracture toughness for fiber reinforced ceramic matrix composites

AU - Mei, Hui

AU - Sun, Yuyao

AU - Zhang, Lidong

AU - Wang, Hongqin

AU - Cheng, Laifei

PY - 2013/1/10

Y1 - 2013/1/10

N2 - The fracture toughness of a carbon fiber reinforced silicon carbide composite was investigated relating to classical critical stress intensity factor KIC, work of fracture, and acoustic emission energy. The KIC was obtained by the single edge notch beam method and the work of fracture was calculated using the featured area under the load-displacement curves. The KIC, work of fracture, and acoustic emission energy were compared for the composites before and after heat treatment and then analyzed associated with toughening microstructures of fiber pullout. It indicates that the work of fracture and acoustic emission energy can be more suitable to reflect the toughness rather than the traditional KIC, which has certain limitation for the fracture toughness characterization of the crack tolerant fiber ceramic composites.

AB - The fracture toughness of a carbon fiber reinforced silicon carbide composite was investigated relating to classical critical stress intensity factor KIC, work of fracture, and acoustic emission energy. The KIC was obtained by the single edge notch beam method and the work of fracture was calculated using the featured area under the load-displacement curves. The KIC, work of fracture, and acoustic emission energy were compared for the composites before and after heat treatment and then analyzed associated with toughening microstructures of fiber pullout. It indicates that the work of fracture and acoustic emission energy can be more suitable to reflect the toughness rather than the traditional KIC, which has certain limitation for the fracture toughness characterization of the crack tolerant fiber ceramic composites.

KW - Acoustic emission

KW - Ceramic matrix composites

KW - Fracture toughness

KW - Work of fracture

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DO - 10.1016/j.msea.2012.09.081

M3 - 文章

AN - SCOPUS:84869090307

SN - 0921-5093

VL - 560

SP - 372

EP - 376

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

ER -

Acoustic emission characterization of fracture toughness for fiber reinforced ceramic matrix composites

Abstract

Keywords

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