Coupled hygro-mechanical finite element method on determination of the interlaminar shear modulus of glass fiber-reinforced polymer laminates in bridge decks under hygrothermal aging effects

Jiang, X.; Luo, Chengwei; Qiang, X.; Zhang, Qilin; Kolstein, M.H.; Bijlaard, F.S.K.

doi:10.3390/polym10080845

Coupled hygro-mechanical finite element method on determination of the interlaminar shear modulus of glass fiber-reinforced polymer laminates in bridge decks under hygrothermal aging effects

Title

Coupled hygro-mechanical finite element method on determination of the interlaminar shear modulus of glass fiber-reinforced polymer laminates in bridge decks under hygrothermal aging effects

Author

Jiang, X. (Tongji University)
Luo, Chengwei (Tongji University)
Qiang, X. (Tongji University)
Zhang, Qilin (Tongji University)
Kolstein, M.H. (TU Delft Steel & Composite Structures)
Bijlaard, F.S.K. (TU Delft Steel & Composite Structures)

Date

2018-08-01

Abstract

To investigate the mechanical degradation of the shear properties of glass fiber-reinforced polymer (GFRP) laminates in bridge decks under hygrothermal aging effects, short-beam shear tests were performed following the ASTM test standard (ASTM D790-10A). Based on the coupled hygro-mechanical finite element (FE) analysis method, an inverse parameter identification approach based on short-beam shear tests was developed and then employed to determine the environment-dependent interlaminar shear modulus of GFRP laminates. Subsequently, the shear strength and modulus of dry (0% M_t/M∞), moisture unsaturated (30% M_t/M∞ and 50% M_t/M∞), and moisture saturated (100% M_t/M∞) specimens at test temperatures of both 20 °C and 40 °C were compared. One cycle of the moisture absorption-desorption process was also investigated to address how the moisture-induced residual damage degrades the shear properties of GFRP laminates. The results revealed that the shear strength and modulus of moisture-saturated GFRP laminates decreased significantly, and the elevated testing temperature (40 °C) aggravated moisture-induced mechanical degradation. Moreover, an unrecoverable loss of shear properties for the GFRP laminates enduring one cycle of the moisture absorption-desorption process was evident.

Subject

Fiber-reinforced polymer composite
Finite element method
Hygrothermal aging effect
Interlaminar shear modulus
Mechanical degradation
Short-beam test
OA-Fund TU Delft

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http://resolver.tudelft.nl/uuid:6d4639be-d7ca-43f2-879a-33b0d7c00b87

DOI

https://doi.org/10.3390/polym10080845

ISSN

2073-4360

Source

Polymers, 10 (8)

Part of collection

Institutional Repository