Fracture behavior and strain evolution of laminated composites

Hao Wu; Guohua Fan; Meng Huang; Lin Geng; Xiping Cui; Rongchang Chen; Guanyun Peng

doi:10.1016/j.compstruct.2016.12.036

Fracture behavior and strain evolution of laminated composites

Hao Wu
, Guohua Fan^*
, Meng Huang
, Lin Geng
, Xiping Cui
, Rongchang Chen
, Guanyun Peng

^*Corresponding author for this work

Harbin Institute of Technology
Shanghai Synchrotron Radiation Facility

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

45 Scopus citations

Abstract

Laminated composites consisting of alternating layers of TiB_w/Ti and Ti(Al) were prepared, and exhibited a superior elongation to fracture that is nearly 20 times higher than that of bulk TiB_w/Ti composites. Coupling two- and three-dimensional fracture characterizations of TiB_w/Ti-Ti(Al) laminated composites show distinct fracture characteristics including crack distribution, formation of tunnel cracks, and suppression of crack propagation. These experimentally observed fracture characteristics are intimately correlated with in situ monitored strain evolution process, by which we observed that strain localization is effectively suppressed by laminated structure, thus lowering the stress intensity near the crack tip as well as the driving force for crack propagation. As a consequence, laminated composites are not so sensitive to the early cracking, and exhibit a good strength-ductility combination.

Original language	English
Pages (from-to)	123-128
Number of pages	6
Journal	Composite Structures
Volume	163
DOIs	https://doi.org/10.1016/j.compstruct.2016.12.036
State	Published - 1 Mar 2017
Externally published	Yes

Keywords

Digital image correlation (DIC)
Fracture
Image analysis
Laminated structures
Strain delocalization

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10.1016/j.compstruct.2016.12.036

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title = "Fracture behavior and strain evolution of laminated composites",

abstract = "Laminated composites consisting of alternating layers of TiBw/Ti and Ti(Al) were prepared, and exhibited a superior elongation to fracture that is nearly 20 times higher than that of bulk TiBw/Ti composites. Coupling two- and three-dimensional fracture characterizations of TiBw/Ti-Ti(Al) laminated composites show distinct fracture characteristics including crack distribution, formation of tunnel cracks, and suppression of crack propagation. These experimentally observed fracture characteristics are intimately correlated with in situ monitored strain evolution process, by which we observed that strain localization is effectively suppressed by laminated structure, thus lowering the stress intensity near the crack tip as well as the driving force for crack propagation. As a consequence, laminated composites are not so sensitive to the early cracking, and exhibit a good strength-ductility combination.",

keywords = "Digital image correlation (DIC), Fracture, Image analysis, Laminated structures, Strain delocalization",

author = "Hao Wu and Guohua Fan and Meng Huang and Lin Geng and Xiping Cui and Rongchang Chen and Guanyun Peng",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier Ltd",

year = "2017",

month = mar,

day = "1",

doi = "10.1016/j.compstruct.2016.12.036",

language = "英语",

volume = "163",

pages = "123--128",

journal = "Composite Structures",

issn = "0263-8223",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Fracture behavior and strain evolution of laminated composites

AU - Wu, Hao

AU - Fan, Guohua

AU - Huang, Meng

AU - Geng, Lin

AU - Cui, Xiping

AU - Chen, Rongchang

AU - Peng, Guanyun

PY - 2017/3/1

Y1 - 2017/3/1

N2 - Laminated composites consisting of alternating layers of TiBw/Ti and Ti(Al) were prepared, and exhibited a superior elongation to fracture that is nearly 20 times higher than that of bulk TiBw/Ti composites. Coupling two- and three-dimensional fracture characterizations of TiBw/Ti-Ti(Al) laminated composites show distinct fracture characteristics including crack distribution, formation of tunnel cracks, and suppression of crack propagation. These experimentally observed fracture characteristics are intimately correlated with in situ monitored strain evolution process, by which we observed that strain localization is effectively suppressed by laminated structure, thus lowering the stress intensity near the crack tip as well as the driving force for crack propagation. As a consequence, laminated composites are not so sensitive to the early cracking, and exhibit a good strength-ductility combination.

AB - Laminated composites consisting of alternating layers of TiBw/Ti and Ti(Al) were prepared, and exhibited a superior elongation to fracture that is nearly 20 times higher than that of bulk TiBw/Ti composites. Coupling two- and three-dimensional fracture characterizations of TiBw/Ti-Ti(Al) laminated composites show distinct fracture characteristics including crack distribution, formation of tunnel cracks, and suppression of crack propagation. These experimentally observed fracture characteristics are intimately correlated with in situ monitored strain evolution process, by which we observed that strain localization is effectively suppressed by laminated structure, thus lowering the stress intensity near the crack tip as well as the driving force for crack propagation. As a consequence, laminated composites are not so sensitive to the early cracking, and exhibit a good strength-ductility combination.

KW - Digital image correlation (DIC)

KW - Fracture

KW - Image analysis

KW - Laminated structures

KW - Strain delocalization

UR - https://www.scopus.com/pages/publications/85006784402

U2 - 10.1016/j.compstruct.2016.12.036

DO - 10.1016/j.compstruct.2016.12.036

M3 - 文章

AN - SCOPUS:85006784402

SN - 0263-8223

VL - 163

SP - 123

EP - 128

JO - Composite Structures

JF - Composite Structures

ER -

Fracture behavior and strain evolution of laminated composites

Abstract

Keywords

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