PSI - Issue 18

Available online at www.sciencedirect.com Structural Integrity Procedia 00 (2019) 000–000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000–000 Available online at www.sciencedirect.com ScienceDirect

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ScienceDirect

Procedia Structural Integrity 18 (2019) 507–515

25th International Conference on Fracture and Structural Integrity Exploring the application of sound measurements to assess the structural integrity of fibre bundles G. Quino a* , F. De Cola a , V. Tagarielli b , N. Petrinic a 25th International Conference on Fracture and Structural Integrity Exploring the application of sound measurements to assess the structural integrity of fibre bundles G. Quino a* , F. De Cola a , V. Tagarielli b , N. Petrinic a

a Dep. of Engineering Science, University of Oxford, United Kingdom b Dep. of Aeronautics, Imperial College London, United Kingdom a Dep. of Engineering Scienc , University of Oxford, United Kingdom b Dep. of Aeronautics, Imperial College London, United Kingdom

© 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Gruppo Italiano Frattura (IGF) ExCo. Abstract In this work, we explore the application of the novel technique Sound Measurements (SM) on E-glass fibre bundles. This technique relies on the ability to capture the sound emitted when fibres break. The method was used to monitor the failure of fibres and to generate a set of effective values of strength for the glass fibres within a bundle. The numerical experiments showed that not only did this methodology provides a more accurate representation of the features observed in the mechanical test, but also a better coefficient of determination � in relation to the Weibull analysis. © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Gruppo Italiano Frattura (IGF) ExCo. Abstract In this work, we expl re the applicatio of the novel t chnique Sound Measurements (SM) on E-glass fibre bundles. This t chnique relies on the ability to capture the sound emitted when fibres break. The method was sed to monitor the failure of fibres and to generate a set of effective values of strength for the glass fibres within a bundle. The numerical experiments showed that not only did this methodology provides a more accurat representation of the features observed in the mechanical test, but also a better coefficient of determination � in relation to the Weibull analysis. © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Gruppo Italiano Frattura (IGF) ExCo.

Keywords: glass fibres; failure; sound; experimental mechanics. Keywords: glass fibres; failure; sound; experimental mechanics.

* Corresponding author. Tel.: +44-1865 613452 E-mail address: gustavo.quinoquispe@eng.ox.ac.uk 1. Introduction * Corresponding a thor. Tel.: +44-1865 613452 E-mail address: gustavo.quinoquispe@eng.ox.ac.uk 1. Introduction

Fibre reinforced polymers are becoming every time more important in various industries, e.g. marine, automotive, aerospace. This is because they combine the properties of their constituents to result in a material with improved properties: lightweight, multifunctional, resistant to corrosion, crashworthy, etc. In this type of composites, the main load bearing constituents are the fibres. They can be unidirectional, stacked in sequences, or woven, in which case they are conformed by several bundles attached together with polyester or other fine yarns. In any case, the understanding of the behaviour of fibres and fibre bundles is key to properly estimate the performance of the composite laminates made with such raw material. Fibre reinforced polymers are becoming every time more important in various industries, e.g. marine, automotive, aerospace. This is because they combine the properties of their constituents to result in a material with improved properties: lightweight, multifunctional, resistant to corrosion, crashworthy, etc. In this type of composites, the main load bearing constituents are the fibres. They can be unidirectional, stacked in sequences, or woven, in which case they are conformed by several bundles attached together with polyester or other fine yarns. In any case, the understanding of the behaviour of fibres and fibre bundles is key to properly estimate the performance of the composite laminates made with such raw material.

2452-3216 © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Gruppo Italiano Frattura (IGF) ExCo. 2452-3216 © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Gruppo Italiano Frattura (IGF) ExCo.

2452-3216  2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Gruppo Italiano Frattura (IGF) ExCo. 10.1016/j.prostr.2019.08.194