New approaches to quantifying tensile strength variability and size effects in unidirectional composites

Michael R. Wisnom; M. Asun Cantera; Gergely Czél; Meisam Jalalvand

New approaches to quantifying tensile strength variability and size effects in unidirectional composites

Michael R. Wisnom, M. Asun Cantera, Gergely Czél, Meisam Jalalvand

Mechanical And Aerospace Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

3 Citations (Scopus)

43 Downloads (Pure)

Abstract

Two methods were used to investigate the variability of tensile failure strain of unidirectional high strength carbon/epoxy. Scaled tests on glass/carbon hybrid specimens showed a significant size effect and reduction of failure strain with stressed volume consistent with a Weibull modulus of 25. Ply fragmentation tests were also carried out, producing multiple carbon fractures in a single specimen. Strains from these tests also fitted a Weibull distribution, and gave a similar Weibull modulus to the scaled tests.

Original language	English
Title of host publication	32nd Technical Conference of the American Society for Composites 2017
Editors	R. Byron Pipes, Wenbin Yu, Johnathan Goodsell
Pages	2902-2909
Number of pages	8
Volume	4
Publication status	Published - 25 Oct 2017
Event	32nd Technical Conference of the American Society for Composites 2017 - West Lafayette, United States Duration: 23 Oct 2017 → 25 Oct 2017

Conference

Conference	32nd Technical Conference of the American Society for Composites 2017
Country/Territory	United States
City	West Lafayette
Period	23/10/17 → 25/10/17

Funding

This work was partly funded under the UK Engineering and Physical Sciences Research Council Programme Grant EP/I02946X/1 on High Performance Ductile Composite Technology in collaboration with Imperial College London. Gergely Czél acknowledges the Hungarian Academy of Sciences for funding through the János Bolyai scholarship and the Hungarian National Research, Development and Innovation Office - NKFIH for funding through grants ref. OTKA K 116070 and OTKA PD 121121. M. Asun Cantera acknowledges the Spanish Government for funding the research stay at the University of Bristol through the program Castillejo JC 2015-00148.

Keywords

unidirectional composites
tensile strength variability
carbon/epoxy composites
Weibull distribution

Access to Document

Wisnom-etal-ASC2017-New-approaches-quantifying-tensile-strength-variability-size-effects-unidirectional-compositesAccepted author manuscript, 449 KB

Cite this

@inproceedings{bffc3665ee6c49b895a896a9c2bf64f0,

title = "New approaches to quantifying tensile strength variability and size effects in unidirectional composites",

abstract = "Two methods were used to investigate the variability of tensile failure strain of unidirectional high strength carbon/epoxy. Scaled tests on glass/carbon hybrid specimens showed a significant size effect and reduction of failure strain with stressed volume consistent with a Weibull modulus of 25. Ply fragmentation tests were also carried out, producing multiple carbon fractures in a single specimen. Strains from these tests also fitted a Weibull distribution, and gave a similar Weibull modulus to the scaled tests.",

keywords = "unidirectional composites, tensile strength variability, carbon/epoxy composites, Weibull distribution",

author = "Wisnom, \{Michael R.\} and Cantera, \{M. Asun\} and Gergely Cz{\'e}l and Meisam Jalalvand",

year = "2017",

month = oct,

day = "25",

language = "English",

isbn = "9781510853065",

volume = "4",

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editor = "Pipes, \{R. Byron\} and Wenbin Yu and Johnathan Goodsell",

booktitle = "32nd Technical Conference of the American Society for Composites 2017",

note = "32nd Technical Conference of the American Society for Composites 2017 ; Conference date: 23-10-2017 Through 25-10-2017",

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Wisnom, MR, Cantera, MA, Czél, G & Jalalvand, M 2017, New approaches to quantifying tensile strength variability and size effects in unidirectional composites. in RB Pipes, W Yu & J Goodsell (eds), 32nd Technical Conference of the American Society for Composites 2017. vol. 4, 375, pp. 2902-2909, 32nd Technical Conference of the American Society for Composites 2017, West Lafayette, United States, 23/10/17.

New approaches to quantifying tensile strength variability and size effects in unidirectional composites. / Wisnom, Michael R.; Cantera, M. Asun; Czél, Gergely et al.
32nd Technical Conference of the American Society for Composites 2017. ed. / R. Byron Pipes; Wenbin Yu; Johnathan Goodsell. Vol. 4 2017. p. 2902-2909 375.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

TY - GEN

T1 - New approaches to quantifying tensile strength variability and size effects in unidirectional composites

AU - Wisnom, Michael R.

AU - Cantera, M. Asun

AU - Czél, Gergely

AU - Jalalvand, Meisam

PY - 2017/10/25

Y1 - 2017/10/25

N2 - Two methods were used to investigate the variability of tensile failure strain of unidirectional high strength carbon/epoxy. Scaled tests on glass/carbon hybrid specimens showed a significant size effect and reduction of failure strain with stressed volume consistent with a Weibull modulus of 25. Ply fragmentation tests were also carried out, producing multiple carbon fractures in a single specimen. Strains from these tests also fitted a Weibull distribution, and gave a similar Weibull modulus to the scaled tests.

AB - Two methods were used to investigate the variability of tensile failure strain of unidirectional high strength carbon/epoxy. Scaled tests on glass/carbon hybrid specimens showed a significant size effect and reduction of failure strain with stressed volume consistent with a Weibull modulus of 25. Ply fragmentation tests were also carried out, producing multiple carbon fractures in a single specimen. Strains from these tests also fitted a Weibull distribution, and gave a similar Weibull modulus to the scaled tests.

KW - unidirectional composites

KW - tensile strength variability

KW - carbon/epoxy composites

KW - Weibull distribution

M3 - Conference contribution book

AN - SCOPUS:85047768445

SN - 9781510853065

VL - 4

SP - 2902

EP - 2909

BT - 32nd Technical Conference of the American Society for Composites 2017

A2 - Pipes, R. Byron

A2 - Yu, Wenbin

A2 - Goodsell, Johnathan

T2 - 32nd Technical Conference of the American Society for Composites 2017

Y2 - 23 October 2017 through 25 October 2017

ER -

New approaches to quantifying tensile strength variability and size effects in unidirectional composites

Abstract

Conference

Funding

Keywords

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