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Fiber bridging mechanism in moisture-induced mode I delamination in carbon/epoxy composites: finite element analysis and experimental investigation

Prolonged exposure of fiber reinforced composite structures to high moisture and temperature in outdoor environment could lead to the degradation of mechanical properties of the materials. To provides reliable prediction of the delamination behavior as the moisture progressively ingresses into the c...

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Main Authors: Wong, King Jye, Chong, William Woei Fong, Goh, Kheng Lim
Format: Article
Published: John Wiley and Sons Inc 2023
Subjects:
TJ Mechanical engineering and machinery
Online Access:http://eprints.utm.my/106456/
http://dx.doi.org/10.1002/pc.27179
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spelling my.utm.1064562024-07-08T07:08:51Z http://eprints.utm.my/106456/ Fiber bridging mechanism in moisture-induced mode I delamination in carbon/epoxy composites: finite element analysis and experimental investigation Wong, King Jye Chong, William Woei Fong Goh, Kheng Lim TJ Mechanical engineering and machinery Prolonged exposure of fiber reinforced composite structures to high moisture and temperature in outdoor environment could lead to the degradation of mechanical properties of the materials. To provides reliable prediction of the delamination behavior as the moisture progressively ingresses into the composites, we proposed a Bilinear-Exponential Traction-Separation (BETS) law-which can account for the fiber bridging mechanism-for investigating the mode I delamination of unidirectional carbon fiber reinforced epoxy composite laminates in wet states. Finite element analysis (FEA) of the delamination model was conducted to evaluate the effects of moisture content on the global force-displacement curves. A cohesive zone model (CZM) was used to describe the delamination behavior at the interface. With regard to the force-displacement curves, the BETS law agrees well with results from experimental study (using the double cantilever beam testing on the wet specimens) at both the elastic and failure regions. The delamination model governed by the BETS law also showed good agreement with the crack length versus the crosshead displacement. The FE model that considered the inputs from the BETS law yielded prediction about the evolution of the damage parameter and crack growth profile. In particular, the predicted crack extension increases linearly with increasing crosshead displacement. The proposed BETS law has the advantage of not requiring crack growth monitoring during experiment, and only one fitting parameter was needed to describe the bridging law at different moisture content levels. John Wiley and Sons Inc 2023-02 Article PeerReviewed Wong, King Jye and Chong, William Woei Fong and Goh, Kheng Lim (2023) Fiber bridging mechanism in moisture-induced mode I delamination in carbon/epoxy composites: finite element analysis and experimental investigation. Polymer Composites, 44 (2). pp. 1392-1407. ISSN 0272-8397 http://dx.doi.org/10.1002/pc.27179 DOI:10.1002/pc.27179
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Wong, King Jye
Chong, William Woei Fong
Goh, Kheng Lim
Fiber bridging mechanism in moisture-induced mode I delamination in carbon/epoxy composites: finite element analysis and experimental investigation
description Prolonged exposure of fiber reinforced composite structures to high moisture and temperature in outdoor environment could lead to the degradation of mechanical properties of the materials. To provides reliable prediction of the delamination behavior as the moisture progressively ingresses into the composites, we proposed a Bilinear-Exponential Traction-Separation (BETS) law-which can account for the fiber bridging mechanism-for investigating the mode I delamination of unidirectional carbon fiber reinforced epoxy composite laminates in wet states. Finite element analysis (FEA) of the delamination model was conducted to evaluate the effects of moisture content on the global force-displacement curves. A cohesive zone model (CZM) was used to describe the delamination behavior at the interface. With regard to the force-displacement curves, the BETS law agrees well with results from experimental study (using the double cantilever beam testing on the wet specimens) at both the elastic and failure regions. The delamination model governed by the BETS law also showed good agreement with the crack length versus the crosshead displacement. The FE model that considered the inputs from the BETS law yielded prediction about the evolution of the damage parameter and crack growth profile. In particular, the predicted crack extension increases linearly with increasing crosshead displacement. The proposed BETS law has the advantage of not requiring crack growth monitoring during experiment, and only one fitting parameter was needed to describe the bridging law at different moisture content levels.
format Article
author Wong, King Jye
Chong, William Woei Fong
Goh, Kheng Lim
author_facet Wong, King Jye
Chong, William Woei Fong
Goh, Kheng Lim
author_sort Wong, King Jye
title Fiber bridging mechanism in moisture-induced mode I delamination in carbon/epoxy composites: finite element analysis and experimental investigation
title_short Fiber bridging mechanism in moisture-induced mode I delamination in carbon/epoxy composites: finite element analysis and experimental investigation
title_full Fiber bridging mechanism in moisture-induced mode I delamination in carbon/epoxy composites: finite element analysis and experimental investigation
title_fullStr Fiber bridging mechanism in moisture-induced mode I delamination in carbon/epoxy composites: finite element analysis and experimental investigation
title_full_unstemmed Fiber bridging mechanism in moisture-induced mode I delamination in carbon/epoxy composites: finite element analysis and experimental investigation
title_sort fiber bridging mechanism in moisture-induced mode i delamination in carbon/epoxy composites: finite element analysis and experimental investigation
publisher John Wiley and Sons Inc
publishDate 2023
url http://eprints.utm.my/106456/
http://dx.doi.org/10.1002/pc.27179
_version_ 1804065503792070656
score 13.211869

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