In this study, the unidirectional carbon fiber-reinforced polymer (CFRP) composite laminates under the Mode I loading are characterized using Cohesive Zone Model (CZM). A bilinear traction-displacement softening law is assumed for the interface behavior. The required interlaminar properties and CZM model parameters are characterized through an experimental-finite element (FE) approach. These parameters are the critical Mode I energy released rate, GIC, tensile strength, T and tensile penalty stiffness, kn. For this purpose, a unidirectional, 32-ply ([0]32) double-cantilever beam specimen is tested to fracture. The global load-displacement response of the specimen to the interface crack extension is recorded. The result establishes the Mode I critical energy release rate, GIC = 0.31 N/mm. The validated finite element (FE) simulation of the test is then employed to extract the CZM model parameters corresponding to the observed interlaminar damage initiation event. The FE-calculated maximum normal stress at the interface crack front is taken to represent the tensile strength of the interface, T=62.5 MPa. The corresponding slope of the stress-relative opening displacement of this critical material point indicates the penalty stiffness of the interface, kn = 0.98×106 N/mm3. With the established interfacial properties, the CZM could then be employed in simulating the deformation and damage process of the interfaces in FRP composite laminates under Mode I loading.
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3 October 2022
INDUSTRIAL, MECHANICAL AND ELECTRICAL ENGINEERING
7 March 2019
Brunei
Research Article|
October 03 2022
Characterization of interface damage of fiber-reinforced polymer composite laminates under mode I loading
S. A. Khan;
S. A. Khan
a)
1
School of Mechanical Engineering, Faculty of Engineering, Universiti Teknologi
Malaysia
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K. J. Wong;
K. J. Wong
b)
1
School of Mechanical Engineering, Faculty of Engineering, Universiti Teknologi
Malaysia
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A. N. Sung;
A. N. Sung
c)
2
Vitrox Academy
, 746, Persiaran Cassia Selatan 3, Township, 14110 Batu Kawan, Pulau Pinang, Malaysia
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M. Johar;
M. Johar
d)
3
Quality Engineering Research Cluster (QEREC), Quality Engineering Section, Malaysian Institute of Industrial Technology, Universiti Kuala Lumpur
, 81750 Masai, Johor, Malaysia
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M. N. Tamin
M. N. Tamin
e)
1
School of Mechanical Engineering, Faculty of Engineering, Universiti Teknologi
Malaysia
e)Corresponding author: [email protected]
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e)Corresponding author: [email protected]
AIP Conf. Proc. 2676, 050003 (2022)
Citation
S. A. Khan, K. J. Wong, A. N. Sung, M. Johar, M. N. Tamin; Characterization of interface damage of fiber-reinforced polymer composite laminates under mode I loading. AIP Conf. Proc. 3 October 2022; 2676 (1): 050003. https://doi.org/10.1063/5.0112714
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