Improving the damage tolerance of composite T-joints using shape memory alloy tufts

Weeliam Khor; Anil R. Ravindran; Francesco Ciampa; Raj B. Ladani; Manatsawee Limprapuwiwattana; Pete Whitton; Andrew D. Foreman; Charlotte Meeks; Alan Steele; Tim Cooper; Andrew Rider; Adrian P. Mouritz

doi:10.1016/j.compositesa.2023.107474

Improving the damage tolerance of composite T-joints using shape memory alloy tufts

Weeliam Khor
, Anil R. Ravindran
, Francesco Ciampa
, Raj B. Ladani
, Manatsawee Limprapuwiwattana
, Pete Whitton
, Andrew D. Foreman
, Charlotte Meeks
, Alan Steele
, Tim Cooper
, Andrew Rider
, Adrian P. Mouritz

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

This paper presents a novel approach to improve the structural properties and damage tolerance of fibre -reinforced polymer composite joints via tufting using shape memory alloy (SMA) filaments. T-shaped joints made of carbon-epoxy composite material were reinforced with thin SMA (Ni-Ti nitinol) tufts. Experimental testing and finite element (FE) modelling reveal that the ultimate load, ultimate displacement and absorbed energy capacity of the T-joint increase with the areal density of SMA tufts. Improvements of over 110% in strength and 450% in absorbed energy capacity were achieved by SMA tufting. Under certain conditions, the shape memory effect of the tufts can be activated via electrical resistance heating to partially or completely close cracks in the T-joint caused by over-loading. The novel use of SMA tufts both to improve the resistance against cracking and to close cracks when they occur is a unique approach to improving the damage tolerance of composite structural joints.

Original language	English
Article number	107474
Number of pages	13
Journal	Composites Part A: Applied Science and Manufacturing
Volume	168
DOIs	https://doi.org/10.1016/j.compositesa.2023.107474
Publication status	Published - May 2023
Externally published	Yes

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Publisher Copyright:
© 2023

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Khor, W., Ravindran, A. R., Ciampa, F., Ladani, R. B., Limprapuwiwattana, M., Whitton, P., Foreman, A. D., Meeks, C., Steele, A., Cooper, T., Rider, A., & Mouritz, A. P. (2023). Improving the damage tolerance of composite T-joints using shape memory alloy tufts. Composites Part A: Applied Science and Manufacturing, 168, Article 107474. https://doi.org/10.1016/j.compositesa.2023.107474

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title = "Improving the damage tolerance of composite T-joints using shape memory alloy tufts",

abstract = "This paper presents a novel approach to improve the structural properties and damage tolerance of fibre -reinforced polymer composite joints via tufting using shape memory alloy (SMA) filaments. T-shaped joints made of carbon-epoxy composite material were reinforced with thin SMA (Ni-Ti nitinol) tufts. Experimental testing and finite element (FE) modelling reveal that the ultimate load, ultimate displacement and absorbed energy capacity of the T-joint increase with the areal density of SMA tufts. Improvements of over 110\% in strength and 450\% in absorbed energy capacity were achieved by SMA tufting. Under certain conditions, the shape memory effect of the tufts can be activated via electrical resistance heating to partially or completely close cracks in the T-joint caused by over-loading. The novel use of SMA tufts both to improve the resistance against cracking and to close cracks when they occur is a unique approach to improving the damage tolerance of composite structural joints.",

author = "Weeliam Khor and Ravindran, \{Anil R.\} and Francesco Ciampa and Ladani, \{Raj B.\} and Manatsawee Limprapuwiwattana and Pete Whitton and Foreman, \{Andrew D.\} and Charlotte Meeks and Alan Steele and Tim Cooper and Andrew Rider and Mouritz, \{Adrian P.\}",

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year = "2023",

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doi = "10.1016/j.compositesa.2023.107474",

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AU - Khor, Weeliam

AU - Ravindran, Anil R.

AU - Ciampa, Francesco

AU - Ladani, Raj B.

AU - Limprapuwiwattana, Manatsawee

AU - Whitton, Pete

AU - Foreman, Andrew D.

AU - Meeks, Charlotte

AU - Steele, Alan

AU - Cooper, Tim

AU - Rider, Andrew

AU - Mouritz, Adrian P.

PY - 2023/5

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AB - This paper presents a novel approach to improve the structural properties and damage tolerance of fibre -reinforced polymer composite joints via tufting using shape memory alloy (SMA) filaments. T-shaped joints made of carbon-epoxy composite material were reinforced with thin SMA (Ni-Ti nitinol) tufts. Experimental testing and finite element (FE) modelling reveal that the ultimate load, ultimate displacement and absorbed energy capacity of the T-joint increase with the areal density of SMA tufts. Improvements of over 110% in strength and 450% in absorbed energy capacity were achieved by SMA tufting. Under certain conditions, the shape memory effect of the tufts can be activated via electrical resistance heating to partially or completely close cracks in the T-joint caused by over-loading. The novel use of SMA tufts both to improve the resistance against cracking and to close cracks when they occur is a unique approach to improving the damage tolerance of composite structural joints.

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DO - 10.1016/j.compositesa.2023.107474

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JF - Composites Part A: Applied Science and Manufacturing

M1 - 107474

ER -

Improving the damage tolerance of composite T-joints using shape memory alloy tufts

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