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Matrix-graded and fibre-steered composites to tackle stress concentrations.

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Title: Matrix-graded and fibre-steered composites to tackle stress concentrations.
Authors: Stanier, David1, Radhakrishnan, Arjun1, Gent, Ian1, Roy, Sree Shankhachur1, Hamerton, Ian1, Potluri, Prasad1, Scarpa, Fabrizio1, Shaffer, Milo1, Ivanov, Dmitry S.1 dmitry.ivanov@bristol.ac.uk
Source: Composite Structures. Jan2019, Vol. 207, p72-80. 9p.
Subjects: Fibrous composites, Glass fibers, Composite materials, Composite construction, Glass composites, Finite element method
Abstract: Abstract This paper studies the feasibility of improving structural performance of composites in the presence of stress concentrators. Matrix grading through local deposition of additive-enhanced matrices and fibre steering by varying fibrous architecture are examined independently and in combination on a glass-fibre triaxial braided composite subjected to open hole tensile test. Stiffened and toughened matrices were incorporated through precise point-wise injections of liquid reactive resin into dry preforms (Liquid Resin Printing). Fibre steering was implemented by varying the braiding angle along the length of the braided sleeve. It has been shown that these novel forms of architecture modification enable a significant improvement in composite strength through a variety of deformation mechanisms. This includes local stiffening of composite in the direct vicinity of the stress concentrator and damage accumulation away from the stress concentrators. The experimental observations are explained by using simple finite-element models. [ABSTRACT FROM AUTHOR]
Copyright of Composite Structures is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 132854982
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: Matrix-graded and fibre-steered composites to tackle stress concentrations.
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  Data: <searchLink fieldCode="AR" term="%22Stanier%2C+David%22">Stanier, David</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Radhakrishnan%2C+Arjun%22">Radhakrishnan, Arjun</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Gent%2C+Ian%22">Gent, Ian</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Roy%2C+Sree+Shankhachur%22">Roy, Sree Shankhachur</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Hamerton%2C+Ian%22">Hamerton, Ian</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Potluri%2C+Prasad%22">Potluri, Prasad</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Scarpa%2C+Fabrizio%22">Scarpa, Fabrizio</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Shaffer%2C+Milo%22">Shaffer, Milo</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Ivanov%2C+Dmitry+S%2E%22">Ivanov, Dmitry S.</searchLink><relatesTo>1</relatesTo><i> dmitry.ivanov@bristol.ac.uk</i>
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  Data: <searchLink fieldCode="JN" term="%22Composite+Structures%22">Composite Structures</searchLink>. Jan2019, Vol. 207, p72-80. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Fibrous+composites%22">Fibrous composites</searchLink><br /><searchLink fieldCode="DE" term="%22Glass+fibers%22">Glass fibers</searchLink><br /><searchLink fieldCode="DE" term="%22Composite+materials%22">Composite materials</searchLink><br /><searchLink fieldCode="DE" term="%22Composite+construction%22">Composite construction</searchLink><br /><searchLink fieldCode="DE" term="%22Glass+composites%22">Glass composites</searchLink><br /><searchLink fieldCode="DE" term="%22Finite+element+method%22">Finite element method</searchLink>
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  Data: Abstract This paper studies the feasibility of improving structural performance of composites in the presence of stress concentrators. Matrix grading through local deposition of additive-enhanced matrices and fibre steering by varying fibrous architecture are examined independently and in combination on a glass-fibre triaxial braided composite subjected to open hole tensile test. Stiffened and toughened matrices were incorporated through precise point-wise injections of liquid reactive resin into dry preforms (Liquid Resin Printing). Fibre steering was implemented by varying the braiding angle along the length of the braided sleeve. It has been shown that these novel forms of architecture modification enable a significant improvement in composite strength through a variety of deformation mechanisms. This includes local stiffening of composite in the direct vicinity of the stress concentrator and damage accumulation away from the stress concentrators. The experimental observations are explained by using simple finite-element models. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Composite Structures is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.compstruct.2018.09.019
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      – Code: eng
        Text: English
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        PageCount: 9
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    Subjects:
      – SubjectFull: Fibrous composites
        Type: general
      – SubjectFull: Glass fibers
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      – SubjectFull: Composite materials
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      – SubjectFull: Composite construction
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      – SubjectFull: Glass composites
        Type: general
      – SubjectFull: Finite element method
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      – TitleFull: Matrix-graded and fibre-steered composites to tackle stress concentrations.
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              M: 01
              Text: Jan2019
              Type: published
              Y: 2019
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