Lower stiffness of GFRP after sulfuric acid-solution aging is due to degradation of fibre-matrix interfaces?

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Lower stiffness of GFRP after sulfuric acid-solution aging is due to degradation of fibre-matrix interfaces? / Kanerva, Mikko; Jokinen, Jarno; Sarlin, E.; Pärnänen, T.; Lindgren, Mari; Järventausta, M.; Vuorinen, Jyrki.

In: Composite Structures, Vol. 212, 15.03.2019, p. 524-534.

Research output: Contribution to journalArticle

Harvard

Kanerva, M, Jokinen, J, Sarlin, E, Pärnänen, T, Lindgren, M, Järventausta, M & Vuorinen, J 2019, 'Lower stiffness of GFRP after sulfuric acid-solution aging is due to degradation of fibre-matrix interfaces?', Composite Structures, vol. 212, pp. 524-534. https://doi.org/10.1016/j.compstruct.2019.01.006

APA

Kanerva, M., Jokinen, J., Sarlin, E., Pärnänen, T., Lindgren, M., Järventausta, M., & Vuorinen, J. (2019). Lower stiffness of GFRP after sulfuric acid-solution aging is due to degradation of fibre-matrix interfaces? Composite Structures, 212, 524-534. https://doi.org/10.1016/j.compstruct.2019.01.006

Vancouver

Author

Kanerva, Mikko ; Jokinen, Jarno ; Sarlin, E. ; Pärnänen, T. ; Lindgren, Mari ; Järventausta, M. ; Vuorinen, Jyrki. / Lower stiffness of GFRP after sulfuric acid-solution aging is due to degradation of fibre-matrix interfaces?. In: Composite Structures. 2019 ; Vol. 212. pp. 524-534.

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@article{a89fc0fc9324433db4572e22c4b35c21,
title = "Lower stiffness of GFRP after sulfuric acid-solution aging is due to degradation of fibre-matrix interfaces?",
abstract = "The aging effects on composite stiffness are important when structures are monitored under long-term mechanical loads and harsh chemical environment. This work aims to reveal the role of fibre-to-matrix interfacial aging on elastic constants due to a long-term sulfuric acid immersion at a high temperature and pressure. The aging effects of glass fibre matrix interfaces are rather impossible to measure directly and they cannot be easily subtracted from macro scale test results. Here, extensive numerical simulations are automatically run to show the sensitivity of all the essential elastic constants on the experimentally observed output of mechanical tests in reality. Material models are formulated for two different length-scales to understand (1) the sensitivity of the layer's length scale related elastic constants and (2) micro scale material properties. The well-established Halpin-Tsai parameters are used to include interfacial effects. The experimental results show that the aging significantly affects tensile and flexural behavior of glass fibre vinylester epoxy composites: tensile and flexural stiffness decreased 6–49{\%} and ultimate strength values 13–34{\%}. The simulations presented that the degradation of fibre matrix interfaces cannot be excluded and they verified the degradation of glass-fibres’ modulus due the conditioning.",
keywords = "Aging, Elasticity, Finite element modelling, GFRP, Sulfuric acid",
author = "Mikko Kanerva and Jarno Jokinen and E. Sarlin and T. P{\"a}rn{\"a}nen and Mari Lindgren and M. J{\"a}rventausta and Jyrki Vuorinen",
year = "2019",
month = "3",
day = "15",
doi = "10.1016/j.compstruct.2019.01.006",
language = "English",
volume = "212",
pages = "524--534",
journal = "Composite Structures",
issn = "0263-8223",

}

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TY - JOUR

T1 - Lower stiffness of GFRP after sulfuric acid-solution aging is due to degradation of fibre-matrix interfaces?

AU - Kanerva, Mikko

AU - Jokinen, Jarno

AU - Sarlin, E.

AU - Pärnänen, T.

AU - Lindgren, Mari

AU - Järventausta, M.

AU - Vuorinen, Jyrki

PY - 2019/3/15

Y1 - 2019/3/15

N2 - The aging effects on composite stiffness are important when structures are monitored under long-term mechanical loads and harsh chemical environment. This work aims to reveal the role of fibre-to-matrix interfacial aging on elastic constants due to a long-term sulfuric acid immersion at a high temperature and pressure. The aging effects of glass fibre matrix interfaces are rather impossible to measure directly and they cannot be easily subtracted from macro scale test results. Here, extensive numerical simulations are automatically run to show the sensitivity of all the essential elastic constants on the experimentally observed output of mechanical tests in reality. Material models are formulated for two different length-scales to understand (1) the sensitivity of the layer's length scale related elastic constants and (2) micro scale material properties. The well-established Halpin-Tsai parameters are used to include interfacial effects. The experimental results show that the aging significantly affects tensile and flexural behavior of glass fibre vinylester epoxy composites: tensile and flexural stiffness decreased 6–49% and ultimate strength values 13–34%. The simulations presented that the degradation of fibre matrix interfaces cannot be excluded and they verified the degradation of glass-fibres’ modulus due the conditioning.

AB - The aging effects on composite stiffness are important when structures are monitored under long-term mechanical loads and harsh chemical environment. This work aims to reveal the role of fibre-to-matrix interfacial aging on elastic constants due to a long-term sulfuric acid immersion at a high temperature and pressure. The aging effects of glass fibre matrix interfaces are rather impossible to measure directly and they cannot be easily subtracted from macro scale test results. Here, extensive numerical simulations are automatically run to show the sensitivity of all the essential elastic constants on the experimentally observed output of mechanical tests in reality. Material models are formulated for two different length-scales to understand (1) the sensitivity of the layer's length scale related elastic constants and (2) micro scale material properties. The well-established Halpin-Tsai parameters are used to include interfacial effects. The experimental results show that the aging significantly affects tensile and flexural behavior of glass fibre vinylester epoxy composites: tensile and flexural stiffness decreased 6–49% and ultimate strength values 13–34%. The simulations presented that the degradation of fibre matrix interfaces cannot be excluded and they verified the degradation of glass-fibres’ modulus due the conditioning.

KW - Aging

KW - Elasticity

KW - Finite element modelling

KW - GFRP

KW - Sulfuric acid

UR - http://www.scopus.com/inward/record.url?scp=85060108666&partnerID=8YFLogxK

U2 - 10.1016/j.compstruct.2019.01.006

DO - 10.1016/j.compstruct.2019.01.006

M3 - Article

VL - 212

SP - 524

EP - 534

JO - Composite Structures

JF - Composite Structures

SN - 0263-8223

ER -

ID: 31510630