Numerical investigation of transient thermo-mechanical loading effect on combined damaged (crack and delamination) curved shell structure: An experimental verification

Kumar, Vikash; Panda, Sidhartha; Mahmoud, S.R.; Balubaid, Mohammed

doi:10.1016/j.oceaneng.2022.113009

Cited by 2 publications

(2 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This significant advancement would not only open new opportunities but also expand the range of benefits offered by CF/EP composites across various industries. [16][17][18][19] Over the years, researchers have developed numerous techniques aimed at addressing the delamination issue and enhancing the delamination resistance of laminated composites. These techniques can be classified as follows: (i) matrix modifications by using organic/inorganic particles (silica, 20 rubber, 21 carbon nanotubes, 22 graphene, 23 calcite particles, 24 micro-cork particles, 25 natural fibers 26 etc.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Enhancing Mode-I and Mode-II fracture toughness of carbon fiber/epoxy laminated composites using 3D-printed polyamide interlayers

Beylergil,

Duman

2023

Proceedings of the Institution of Mechanical Engineers, Part L:

View full text Add to dashboard Cite

Delamination is a critical concern in laminated composites, affecting their structural integrity and overall performance. This study investigates the enhancement of Mode-I and Mode-II fracture toughness in carbon fiber/epoxy (CF/EP) composites through the incorporation of 3D-printed polyamide (PA) interlayers. Vacuum-assisted resin transfer molding was utilized to fabricate composite laminates with and without 3D-printed PA interlayers. Comprehensive testing was conducted to assess the effect of 3D-printed PA interlayers on the Mode-I and Mode-II fracture toughness, interlaminar shear strength, and flexural properties, as well as thermomechanical response using dynamic mechanical analysis. The results revealed a significant improvement in critical energy release rates for both Mode-I and Mode-II (GIc and GIIc), increasing by 43.5% and 81.2% respectively, compared to the reference composites. This enhancement was primarily attributed to crack bridging and plastic deformation of PA filaments in the interlaminar region. Additionally, interlaminar shear strength increased by 17.4%. While the reference composites had a glass transition temperature of 117.3 °C, the PA-reinforced composites showed a slightly higher value at 119.6 °C, with no significant change in the glass transition temperature. tanδmax values increased from 0.321 to 0.576, suggesting better energy dissipation in PA-reinforced composites. However, flexural properties were adversely affected by the increased thickness and reduced fiber volume fraction due to the introduction of 3D-printed PA interlayers, with the flexural modulus decreasing by approximately 28% and the flexural strength by around 50%. These findings offer promising opportunities to enhance the performance of CF/EP composites under specific loading scenarios, thus expanding their potential applications across diverse industries.

show abstract

Section: Introductionmentioning

confidence: 99%

“…This significant advancement would not only open new opportunities but also expand the range of benefits offered by CF/EP composites across various industries. 16–19…”

Section: Introductionmentioning

confidence: 99%