A failure criterion to predict the onset of matrix cracking induced delamination in general composite laminates

Delbariani-Nejad, Ali; Farrokhabadi, Amin

doi:10.1016/j.compstruct.2019.111564

Cited by 7 publications

(3 citation statements)

References 18 publications

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“…Since the matrix is the weakest constituent of FRP material, the initial crack in the GFRP composites is generated when the applied impact energy exceeds the ultimate matrix strength. These matrix cracks then propagate along with the FRP composite through-thickness (Delbariani-Nejad and Farrokhabadi, 2020). While propagating, these matrix cracks come across the angle mismatching interfaces resulting in delamination (Ouyang et al., 2020).…”

Section: Resultsmentioning

confidence: 99%

Effect of ply position switching in quasi-isotropic glass fibre reinforced polymer composite subjected to low velocity impact

Singh

Mahesh

2022

International Journal of Damage Mechanics

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This paper reports the influence of woven (0°/90°) and (±45°) lamina position interchanging about the midplane in an eight-layered quasi-isotropic glass fibre reinforced polymer (GFRP) composite under low velocity impact (LVI). In order to fabricate GFRP composite, two lamina orientations as (0°/90°) (referred as ‘a’) and (±45°) (referred as ‘c’) arranged in different stacking sequences. Three number of sample groups as (i) sandwiched ([aacc]S and [ccaa]S) (ii) intercalated ([acca]S and [caac]S) and (iii) alternate ([acac]S and [caca]S) resulted in six number of stacking sequences. The drop weight impact tests are performed at two incident velocities as 1.5 and 4 m/s. The corresponding impact energies generated are 11.39 and 81.05 J, respectively. The impact velocity 1.5 m/s created the barely visible impact damage (BVID) in the GFRP composite, while the impact velocity 4 m/s perforated the GFRP composite. The experimental results showed that the intercalated laminate design with four mismatching interfaces (i.e., [acca]S), offered better impact resistance than two other designs with two and six angle mismatching interfaces. It is also perceived that the impact response (maximum peak load, maximum impact energy and minimum impactor displacement) was independent of the number of angles of mismatching interfaces. Moreover, low velocity impact response of a quasi-isotropic GFRP composite depends on the balanced lamina position about the midplane in the laminate. Experimental results for maximum peak load, maximum energy absorption and laminate displacement proved the significance of conventional designing methodology. Further, the impactor displacement value at maximum peak load and the landing displacement value of the descending portion of the force-displacement curve after reaching the maximum peak load proved to be a practical approach along with the use of determinant of the bending stiffness matrix in determining the better performing stacking sequences for a quasi-isotropic GFRP composite made of (0°/90°) and (±45°) plies under LVI.

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Section: Resultsmentioning

confidence: 99%

Effect of ply position switching in quasi-isotropic glass fibre reinforced polymer composite subjected to low velocity impact

Singh

Mahesh

2022

International Journal of Damage Mechanics

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“…Rahmani and Farrokhabadi [13] used an analytical-computational method and an energy-based methodology to estimate the evolution of delamination in composite laminates. Delbariani-Nejad and Farrokhabadi [14] developed a physical technique used to establish a suggested failure criterion. The fields of stress and strain in laminate regions "damaged and undamaged" are calculated using the equations regulating the physics of laminates with matrix crack-induced delamination.…”

Section: Introductionmentioning

confidence: 99%

“…Then, the stiffness reduction caused by the beginning and growth of delamination in an angle-ply laminate is derived by having both stress and strain fields. Farrokhabadi et al [15] extended the work done in [14] as they examined the development of induced delamination in off-axis composite laminates with different stacking sequences applying analytical, computational, and experimental methods to extract the delamination growth pattern, length, and stiffness degradation caused by the delamination growth. also obtained the change in thermal expansion of damaged ply.…”

Section: Introductionmentioning

confidence: 99%

Effects of Matrix Cracking-Induced Delamination on Thermal Buckling of Composite Laminate

Sayed,

Saleh,

Ibrahim

2024

J. Phys.: Conf. Ser.

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Delamination and matrix cracking are common damage modes in composite laminates, significantly impacting their structural integrity and performance. Under elevated temperatures, the collision of anisotropic thermal expansion and nonlinear stiffness responses affect the onset of thermal buckling in flying vehicles. This study implements a multi-scale analysis framework, incorporating finite element modeling and analytical methods to obtain the reduction in mechanical properties of the composite laminate and its stiffness degradation based on an effective stiffness model due to pre-existing matrix cracking in plies. Based on non-linear equations, obtained from the principle of virtual work, in combination with first-order shear deformable theory and von Kármán strain-displacement relations, the thermal buckling temperature, post-buckling behavior of composite laminates are investigated. This work paves the way for developing a model to predict the influence of the laminate stiffness, delamination size, transverse crack location, stacking sequence, and plies thickness on the laminate.

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Structural Optimization and Influence Factors on Reliability for Composite Wind Turbine Blade

Tian

Wang

Liu

et al. 2021

J Fail. Anal. and Preven.

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A failure criterion to predict the onset of matrix cracking induced delamination in general composite laminates

Cited by 7 publications

References 18 publications

Effect of ply position switching in quasi-isotropic glass fibre reinforced polymer composite subjected to low velocity impact

Effect of ply position switching in quasi-isotropic glass fibre reinforced polymer composite subjected to low velocity impact

Effects of Matrix Cracking-Induced Delamination on Thermal Buckling of Composite Laminate

Structural Optimization and Influence Factors on Reliability for Composite Wind Turbine Blade

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