Predicting notched tensile strength of full-scale composite structures from small coupons using fracture mechanics

Xiaodong Xu; Shin-ichi Takeda; Yuichiro Aoki; Stephen R. Hallett; Michael R. Wisnom

doi:10.1016/j.compstruct.2017.08.026

Predicting notched tensile strength of full-scale composite structures from small coupons using fracture mechanics

Xiaodong Xu
, Shin-ichi Takeda
, Yuichiro Aoki
, Stephen R. Hallett
, Michael R. Wisnom

Research output: Contribution to journal › Article (Academic Journal) › peer-review

24 Citations (Scopus)

434 Downloads (Pure)

Abstract

The initial fracture propagation within a full-scale stiffened quasi-isotropic composite panel and coupons with stringer feet under tensile loads was investigated. The specimens were made from Non-Crimp Fabric through Vacuum assisted Resin Transfer Moulding. The failure loads of all configurations were successfully related using the same value of trans-laminar fracture energy. The method involved independent tests of scaled-down Over-height Compact Tension specimens and the Virtual Crack Closure Technique. It was found to be crucial to include the fully developed damage process zone in the crack length and to interpret the results carefully in order to identify the failure loads consistently.

Original language	English
Pages (from-to)	386-394
Number of pages	9
Journal	Composite Structures
Volume	180
Early online date	10 Aug 2017
DOIs	https://doi.org/10.1016/j.compstruct.2017.08.026
Publication status	Published - 15 Nov 2017

Keywords

Fracture mechanics
Notch
Virtual Crack Closure Technique (VCCT)
Vacuum assisted Resin Transfer Moulding (VaRTM)
Non-Crimp Fabric (NCF)

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10.1016/j.compstruct.2017.08.026

Full-text PDF (accepted author manuscript)
This is the author accepted manuscript (AAM). The final published version (version of record) is available online via Elsevier at http://www.sciencedirect.com/science/article/pii/S0263822317314137. Please refer to any applicable terms of use of the publisher.
Accepted author manuscript, 1.04 MB

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Professor Michael R Wisnom
- M.Wisnombristol.acuk
- School of Civil, Aerospace and Design Engineering - Professor of Aerospace Structures
- Cabot Institute for the Environment
- Bristol Composites Institute
- Composites University Technology Centre (UTC)
Person: Academic , Member, Group lead

Cite this

@article{bc31819f040c4ea4a5bf19dc83824b6a,

title = "Predicting notched tensile strength of full-scale composite structures from small coupons using fracture mechanics",

abstract = "The initial fracture propagation within a full-scale stiffened quasi-isotropic composite panel and coupons with stringer feet under tensile loads was investigated. The specimens were made from Non-Crimp Fabric through Vacuum assisted Resin Transfer Moulding. The failure loads of all configurations were successfully related using the same value of trans-laminar fracture energy. The method involved independent tests of scaled-down Over-height Compact Tension specimens and the Virtual Crack Closure Technique. It was found to be crucial to include the fully developed damage process zone in the crack length and to interpret the results carefully in order to identify the failure loads consistently.",

keywords = "Fracture mechanics, Notch, Virtual Crack Closure Technique (VCCT), Vacuum assisted Resin Transfer Moulding (VaRTM), Non-Crimp Fabric (NCF)",

author = "Xiaodong Xu and Shin-ichi Takeda and Yuichiro Aoki and Hallett, \{Stephen R.\} and Wisnom, \{Michael R.\}",

year = "2017",

month = nov,

day = "15",

doi = "10.1016/j.compstruct.2017.08.026",

language = "English",

volume = "180",

pages = "386--394",

journal = "Composite Structures",

issn = "0263-8223",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Predicting notched tensile strength of full-scale composite structures from small coupons using fracture mechanics

AU - Xu, Xiaodong

AU - Takeda, Shin-ichi

AU - Aoki, Yuichiro

AU - Hallett, Stephen R.

AU - Wisnom, Michael R.

PY - 2017/11/15

Y1 - 2017/11/15

N2 - The initial fracture propagation within a full-scale stiffened quasi-isotropic composite panel and coupons with stringer feet under tensile loads was investigated. The specimens were made from Non-Crimp Fabric through Vacuum assisted Resin Transfer Moulding. The failure loads of all configurations were successfully related using the same value of trans-laminar fracture energy. The method involved independent tests of scaled-down Over-height Compact Tension specimens and the Virtual Crack Closure Technique. It was found to be crucial to include the fully developed damage process zone in the crack length and to interpret the results carefully in order to identify the failure loads consistently.

AB - The initial fracture propagation within a full-scale stiffened quasi-isotropic composite panel and coupons with stringer feet under tensile loads was investigated. The specimens were made from Non-Crimp Fabric through Vacuum assisted Resin Transfer Moulding. The failure loads of all configurations were successfully related using the same value of trans-laminar fracture energy. The method involved independent tests of scaled-down Over-height Compact Tension specimens and the Virtual Crack Closure Technique. It was found to be crucial to include the fully developed damage process zone in the crack length and to interpret the results carefully in order to identify the failure loads consistently.

KW - Fracture mechanics

KW - Notch

KW - Virtual Crack Closure Technique (VCCT)

KW - Vacuum assisted Resin Transfer Moulding (VaRTM)

KW - Non-Crimp Fabric (NCF)

U2 - 10.1016/j.compstruct.2017.08.026

DO - 10.1016/j.compstruct.2017.08.026

M3 - Article (Academic Journal)

SN - 0263-8223

VL - 180

SP - 386

EP - 394

JO - Composite Structures

JF - Composite Structures

ER -

Predicting notched tensile strength of full-scale composite structures from small coupons using fracture mechanics

Abstract

Keywords

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Professor Michael R Wisnom

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