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Reliability analysis of natural composite for marine structures

Reliability analysis of natural composite for marine structures
Reliability analysis of natural composite for marine structures
Composite materials are widely used for structural applications in the marine sector. Whilst they have many benefits, these materials can have an adverse environmental impact with high carbon production costs and poor recyclability. It is therefore important to investigate potential alternatives, such as composites reinforced with natural fibres. Whilst a number of reinforcements show promise, with comparable specific properties to conventional fibres, there are limited examples of these materials in structural applications, at least in part due to a perceived low reliability at the laminate level due to the inconsistencies at the fibre level.
A reliability assessment of natural composite materials was therefore performed to compare the applicability of these materials, in structural applications, to conventional fibre reinforced composites. This was done by determining the probability of failure for three equivalent structures made from conventional and natural fibre reinforced composites. The analysis is performed using Monte-Carlo simulations to determine the structural integrity and serviceability of a composite grillage under out-of-plane loading. The sensitivity of the structure’s reliability to each input variable is determined.
The results show that the probability of failure for composites reinforced with natural fibres is lower than for conventional fibre structures while also requiring a heavier structure. However, all of the failures in the analysis occurred due to the serviceability limit state with deflections above the prescribed limit. Whilst it is unlikely that these materials will be chosen for primary stiffening it is a possibility that with improved production techniques, and a reduction of cost with increased up take, that these materials might provide a sustainable alternative in secondary structural applications.
Springer
Blanchard, Jeanne
09d205df-4cf3-45ff-853e-4e524576791b
Sobey, Adam
e850606f-aa79-4c99-8682-2cfffda3cd28
Blake, James
6afa420d-0936-4acc-861b-36885406c891
Davies, Peter
Rajapaske, Yapa D.S.
Blanchard, Jeanne
09d205df-4cf3-45ff-853e-4e524576791b
Sobey, Adam
e850606f-aa79-4c99-8682-2cfffda3cd28
Blake, James
6afa420d-0936-4acc-861b-36885406c891
Davies, Peter
Rajapaske, Yapa D.S.

Blanchard, Jeanne, Sobey, Adam and Blake, James (2015) Reliability analysis of natural composite for marine structures. Davies, Peter and Rajapaske, Yapa D.S. (eds.) In Durability of composites in a marine environment. Springer..

Record type: Conference or Workshop Item (Paper)

Abstract

Composite materials are widely used for structural applications in the marine sector. Whilst they have many benefits, these materials can have an adverse environmental impact with high carbon production costs and poor recyclability. It is therefore important to investigate potential alternatives, such as composites reinforced with natural fibres. Whilst a number of reinforcements show promise, with comparable specific properties to conventional fibres, there are limited examples of these materials in structural applications, at least in part due to a perceived low reliability at the laminate level due to the inconsistencies at the fibre level.
A reliability assessment of natural composite materials was therefore performed to compare the applicability of these materials, in structural applications, to conventional fibre reinforced composites. This was done by determining the probability of failure for three equivalent structures made from conventional and natural fibre reinforced composites. The analysis is performed using Monte-Carlo simulations to determine the structural integrity and serviceability of a composite grillage under out-of-plane loading. The sensitivity of the structure’s reliability to each input variable is determined.
The results show that the probability of failure for composites reinforced with natural fibres is lower than for conventional fibre structures while also requiring a heavier structure. However, all of the failures in the analysis occurred due to the serviceability limit state with deflections above the prescribed limit. Whilst it is unlikely that these materials will be chosen for primary stiffening it is a possibility that with improved production techniques, and a reduction of cost with increased up take, that these materials might provide a sustainable alternative in secondary structural applications.

Text
RELIABILITY ANALYSIS OF NATURAL COMPOSITE FOR MARINE STRUCTURES Blanchard Sobey Blake LIMAS 2015 FINAL
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Published date: 2015
Venue - Dates: International Conference on Lightweight Design of Engineering Structures, , Glasgow, United Kingdom, 2015-03-01 - 2015-03-04

Identifiers

Local EPrints ID: 449857
URI: http://eprints.soton.ac.uk/id/eprint/449857
PURE UUID: fbcdf15b-bfcf-4ccd-8ba9-54ebd2feb9f9
ORCID for Jeanne Blanchard: ORCID iD orcid.org/0000-0001-9371-1992
ORCID for Adam Sobey: ORCID iD orcid.org/0000-0001-6880-8338
ORCID for James Blake: ORCID iD orcid.org/0000-0001-5291-8233

Catalogue record

Date deposited: 23 Jun 2021 16:30
Last modified: 13 Dec 2021 03:32

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Contributors

Author: Adam Sobey ORCID iD
Author: James Blake ORCID iD
Editor: Peter Davies
Editor: Yapa D.S. Rajapaske

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