Rights statement: This is the author’s version of a work that was accepted for publication in Composite Structures. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Composite Structures, 262, 2021 DOI: 10.1016/j.compstruct.2020.113369
Accepted author manuscript, 4.12 MB, PDF document
Available under license: CC BY-NC-ND
Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Microscale intrinsic properties of hybrid unidirectional/woven composite laminates
T2 - Part I experimental tests
AU - Ye, J.
AU - Cai, H.
AU - Liu, L.
AU - Zhai, Z.
AU - Amaechi, C.V.
AU - Wang, Y.
AU - Wan, L.
AU - Yang, D.
AU - Chen, X.
AU - Ye, Jianqiao
N1 - This is the author’s version of a work that was accepted for publication in Composite Structures. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Composite Structures, 262, 2021 DOI: 10.1016/j.compstruct.2020.113369
PY - 2021/4/15
Y1 - 2021/4/15
N2 - Understanding of the failure of composites is critical for evaluating their safety and reliability when they are in service. In this research, a combined image analysis technique using computed microtomography (micro-CT) and scanning electron microscopy (SEM) is proposed to study the microstructures, damage and failure of a hybrid unidirectional/woven composite laminate (HUWCL). Micro-CT is used to extract the 3D microscale morphology and identify the internal failure behaviours of the HUWCL. A series of material parameters, such as fiber volume fraction, void ratio and layer mode, are acquired by the statistical analysis of the micro-CT images. In addition, microscale surface damage and failure mechanism of woven and unidirectional (UD) laminae are further investigated by SEM. It is found that the matrix damage around the interface always occurs in both woven and unidirectional (UD) laminae, and distinct delamination is found between the UD laminae and the woven composites. The study shows a great potential of combining micro-CT with SEM in revealing the local damage and intrinsic failure mechanism in HUWCLs at microscale.
AB - Understanding of the failure of composites is critical for evaluating their safety and reliability when they are in service. In this research, a combined image analysis technique using computed microtomography (micro-CT) and scanning electron microscopy (SEM) is proposed to study the microstructures, damage and failure of a hybrid unidirectional/woven composite laminate (HUWCL). Micro-CT is used to extract the 3D microscale morphology and identify the internal failure behaviours of the HUWCL. A series of material parameters, such as fiber volume fraction, void ratio and layer mode, are acquired by the statistical analysis of the micro-CT images. In addition, microscale surface damage and failure mechanism of woven and unidirectional (UD) laminae are further investigated by SEM. It is found that the matrix damage around the interface always occurs in both woven and unidirectional (UD) laminae, and distinct delamination is found between the UD laminae and the woven composites. The study shows a great potential of combining micro-CT with SEM in revealing the local damage and intrinsic failure mechanism in HUWCLs at microscale.
KW - Damage evolution
KW - Failure mechanism
KW - Hybrid laminates
KW - Micro-CT
KW - SEM
KW - Computerized tomography
KW - Image analysis
KW - Laminated composites
KW - Morphology
KW - Scanning electron microscopy
KW - Void fraction
KW - Composite laminate
KW - Computed microtomography
KW - Damage and failure
KW - Experimental test
KW - Fiber volume fractions
KW - Intrinsic failure
KW - Intrinsic property
KW - Material parameter
KW - Failure (mechanical)
U2 - 10.1016/j.compstruct.2020.113369
DO - 10.1016/j.compstruct.2020.113369
M3 - Journal article
VL - 262
JO - Composite Structures
JF - Composite Structures
SN - 0263-8223
M1 - 113369
ER -