The high strain rate tension behaviour of pseudo-ductile high performance thin ply composites

Mohamad Fotouhi; Jonathan Fuller; Marco Longana; Meisam Jalalvand; Michael R. Wisnom

doi:10.1016/j.compstruct.2019.02.068

The high strain rate tension behaviour of pseudo-ductile high performance thin ply composites

Mohamad Fotouhi^*, Jonathan Fuller, Marco Longana, Meisam Jalalvand, Michael R. Wisnom

^*Corresponding author for this work

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

11 Citations (Scopus)

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Abstract

In this study the effect of strain rate in tension on two different types of thin-ply pseudo-ductile laminates is reported. These comprised Unidirectional (UD) and quasi-isotropic (QI) hybrids made from low strain thin-ply carbon/epoxy and high strain glass/epoxy prepreg and all-carbon laminates made from thin-ply [±ϴ/0]s laminates referred to as angle-ply (AP) composites. Laminates were designed and subjected to a range of cross-head speeds from 2 mm/min (0.0003 s ⁻¹ ) to 10 m/s (100 s ⁻¹ ). The designed laminates were made from single or hybrids of low strain and high strain unidirectional prepregs, i.e. thin-ply Carbon/epoxy and Glass/epoxy, respectively. Dynamic stress-strain plots and details of the damage mechanisms were obtained for each sample and compared with the quasi-static test results. The investigated thin-ply UD and QI hybrid composite laminates showed excellent pseudo-ductility at different strain rates, whereas the AP laminates were strain rate dependent and pseudo-ductility decreased with increasing strain rate.

Original language	English
Pages (from-to)	365-376
Number of pages	12
Journal	Composite Structures
Volume	215
Early online date	19 Feb 2019
DOIs	https://doi.org/10.1016/j.compstruct.2019.02.068
Publication status	Published - 1 May 2019

Structured keywords

Bristol Composites Institute ACCIS

Keywords

Angle-ply
High strain rate
Hybrid
Pseudo-ductility
Quasi-isotropic
Thin-ply

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10.1016/j.compstruct.2019.02.068

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Accepted author manuscript, 1.62 MBLicence: CC BY-NC-ND

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title = "The high strain rate tension behaviour of pseudo-ductile high performance thin ply composites",

abstract = " In this study the effect of strain rate in tension on two different types of thin-ply pseudo-ductile laminates is reported. These comprised Unidirectional (UD) and quasi-isotropic (QI) hybrids made from low strain thin-ply carbon/epoxy and high strain glass/epoxy prepreg and all-carbon laminates made from thin-ply [±ϴ/0]s laminates referred to as angle-ply (AP) composites. Laminates were designed and subjected to a range of cross-head speeds from 2 mm/min (0.0003 s −1 ) to 10 m/s (100 s −1 ). The designed laminates were made from single or hybrids of low strain and high strain unidirectional prepregs, i.e. thin-ply Carbon/epoxy and Glass/epoxy, respectively. Dynamic stress-strain plots and details of the damage mechanisms were obtained for each sample and compared with the quasi-static test results. The investigated thin-ply UD and QI hybrid composite laminates showed excellent pseudo-ductility at different strain rates, whereas the AP laminates were strain rate dependent and pseudo-ductility decreased with increasing strain rate. ",

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author = "Mohamad Fotouhi and Jonathan Fuller and Marco Longana and Meisam Jalalvand and Wisnom, {Michael R.}",

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AU - Fuller, Jonathan

AU - Longana, Marco

AU - Jalalvand, Meisam

AU - Wisnom, Michael R.

PY - 2019/5/1

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N2 - In this study the effect of strain rate in tension on two different types of thin-ply pseudo-ductile laminates is reported. These comprised Unidirectional (UD) and quasi-isotropic (QI) hybrids made from low strain thin-ply carbon/epoxy and high strain glass/epoxy prepreg and all-carbon laminates made from thin-ply [±ϴ/0]s laminates referred to as angle-ply (AP) composites. Laminates were designed and subjected to a range of cross-head speeds from 2 mm/min (0.0003 s −1 ) to 10 m/s (100 s −1 ). The designed laminates were made from single or hybrids of low strain and high strain unidirectional prepregs, i.e. thin-ply Carbon/epoxy and Glass/epoxy, respectively. Dynamic stress-strain plots and details of the damage mechanisms were obtained for each sample and compared with the quasi-static test results. The investigated thin-ply UD and QI hybrid composite laminates showed excellent pseudo-ductility at different strain rates, whereas the AP laminates were strain rate dependent and pseudo-ductility decreased with increasing strain rate.

AB - In this study the effect of strain rate in tension on two different types of thin-ply pseudo-ductile laminates is reported. These comprised Unidirectional (UD) and quasi-isotropic (QI) hybrids made from low strain thin-ply carbon/epoxy and high strain glass/epoxy prepreg and all-carbon laminates made from thin-ply [±ϴ/0]s laminates referred to as angle-ply (AP) composites. Laminates were designed and subjected to a range of cross-head speeds from 2 mm/min (0.0003 s −1 ) to 10 m/s (100 s −1 ). The designed laminates were made from single or hybrids of low strain and high strain unidirectional prepregs, i.e. thin-ply Carbon/epoxy and Glass/epoxy, respectively. Dynamic stress-strain plots and details of the damage mechanisms were obtained for each sample and compared with the quasi-static test results. The investigated thin-ply UD and QI hybrid composite laminates showed excellent pseudo-ductility at different strain rates, whereas the AP laminates were strain rate dependent and pseudo-ductility decreased with increasing strain rate.

KW - Angle-ply

KW - High strain rate

KW - Hybrid

KW - Pseudo-ductility

KW - Quasi-isotropic

KW - Thin-ply

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The high strain rate tension behaviour of pseudo-ductile high performance thin ply composites

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