Comparison of two progressive damage models for predicting low-velocity impact behavior of woven composites

Kumar, Yogesh; Rezasefat, Mohammad; Amico, Sandro C.; Manes, Andrea; Dolez, Patricia I.; Hogan, James D.

doi:10.1016/j.tws.2024.111611

Cited by 7 publications

(2 citation statements)

References 104 publications

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“…Building on previous studies [65,66], this work focuses on Hexcel ® 8-harness satin S2-glass fabrics reinforced with epoxy resin laminates produced by vacuum infusion, layering 16 dry fabric layers in a [0 • /90 • ] 8 sequence on a mould. Resin was introduced under vacuum (100 kPa), which was followed by a 24-h cure at room temperature and 16-h post-cure at 65 • C. The resulting 4-mm thick laminates showed homogeneous resin distribution, confirmed by C-scan ultrasonic testing.…”

Section: Experimental Activitiesmentioning

confidence: 99%

“…Specimen fixation on a rigid plate ensured a consistent test setup, and a pneumatic arm prevented multiple impacts. Impact damage [68] and permanent indentation [68] were quantified using backlighting for damaged area assessment and a dial gauge for indentation depth, following previously established methodologies for composite analysis [65,66].…”

Section: Experimental Activitiesmentioning

confidence: 99%

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Dynamic Behavior and Permanent Indentation in S2-Glass Woven Fabric Reinforced Polymer Composites under Impact: Experimentation and High-Fidelity Modeling

Rezasefat,

Kumar,

da Silva

et al. 2024

J. Compos. Sci.

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This paper studies the behavior of S2-glass woven fabric reinforced polymer composite under low-velocity impact at 18–110 J energy. A macro-homogeneous finite element model for the prediction of their response is implemented, considering the non-linear material behavior and intralaminar and interlaminar failure modes for the prediction of impact damage. The model accurately predicted the permanent indentation caused by impact. By applying the Ramberg-Osgood formulation, different initial stiffness values are examined to assess the post-impact unloading response. This approach reveals the significant role of initial stiffness in inelastic strain accumulation and its consequent effect on permanent indentation depth. A higher initial stiffness correlates with increased inelastic strain, influencing the impactor rebound and resulting in greater permanent indentation. By accurately predicting permanent indentation, and damage accumulation for different impact energies, this study contributes to a better understanding of the impact behavior of composite materials, thereby promoting their wider application.

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Section: Experimental Activitiesmentioning

confidence: 99%

Section: Experimental Activitiesmentioning

confidence: 99%

Dynamic Behavior and Permanent Indentation in S2-Glass Woven Fabric Reinforced Polymer Composites under Impact: Experimentation and High-Fidelity Modeling

Rezasefat,

Kumar,

da Silva

et al. 2024

J. Compos. Sci.

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Effect of boundary conditions on the low‐velocity impact damage mechanism of fiber metal laminate

Wang,

Zhang,

Wen

et al. 2024

Polymer Composites

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The boundary condition is a very important factor when characterizing the impact performance of a material or a structure. However, its effect on fiber metal laminate (FML) has been rarely mentioned. In the present investigation, three levels of low‐velocity impact tests were conducted on the glass fiber reinforced aluminum laminate (Glare) under two different boundary conditions, one was that defined in ASTM D7136 and another one was self‐designed that has the same constraint area but different constraint degree. One basis of the experiments, finite element analyses were performed to gain a deeper understanding of the different damage mechanisms. With which another three boundary conditions were investigated for further considering the effect of constraint areas on both the impact and non‐impact sides, including that defined in another commonly used standard ASTM D5628 and two self‐designed cases. It was indicated that the boundary conditions influenced less the force and energy responses of Glare laminate, regardless of the impact damage levels, and hardly on the damage behavior as well when perforation was encountered. However, influences were obtained under lower and intermediate damage levels, and it was the constraint area on the rear side and constraint degree that played the dominant roles, respectively. The results achieved can provide suggestions for reasonably evaluating the low‐velocity impact performance of FML.Highlights Comparisons were made between the low‐velocity impact behavior of Glare laminates under five different boundary conditions. Boundary conditions influenced hardly on maximum impact force and energy absorbed ratio, but evidently on damage behavior. Constraint area and constraint degree governed damage mechanism under lower and intermediate impact energies, respectively. Influence of boundary conditions on damage behavior disappeared when the impact energy was enough to perforate Glare laminate.

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The effect of interfacial imperfection on the nonlinear dynamic behavior of composite laminates under low-velocity impact

Zhu,

Li,

et al. 2024

Nonlinear Dyn

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Comparison of two progressive damage models for predicting low-velocity impact behavior of woven composites

Cited by 7 publications

References 104 publications

Dynamic Behavior and Permanent Indentation in S2-Glass Woven Fabric Reinforced Polymer Composites under Impact: Experimentation and High-Fidelity Modeling

Dynamic Behavior and Permanent Indentation in S2-Glass Woven Fabric Reinforced Polymer Composites under Impact: Experimentation and High-Fidelity Modeling

Effect of boundary conditions on the low‐velocity impact damage mechanism of fiber metal laminate

The effect of interfacial imperfection on the nonlinear dynamic behavior of composite laminates under low-velocity impact

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