FE Analysis of Impact on Kevlar/Epoxy Laminates with Different Orientations and Thicknesses

Sikarwar, Rahul S.; Rajput, Nitesh Singh; Ramachandran, V.; Naik, Shubham

doi:10.1016/j.matpr.2017.02.114

Cited by 8 publications

(2 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It was observed that the residual fatigue life is controlled by both CFRP and GFRP layers in hybrid FMLs. Kevlar/epoxy laminates are popular in the military and aerospace applications due to its better impact characteristics [94][95][96] and their hybridization with aluminium layers investigating the tensile impact behaviours at high strain rates are reported in a few literatures. 97,98 It was observed that the stacking sequence of the aluminium layers significantly affected the energy absorbed during impact.…”

Section: Effect Of Hybridisationmentioning

confidence: 99%

Low velocity impact on fibre metal laminates: A review

Kakati,

Chakraborty

2023

Journal of Composite Materials

View full text Add to dashboard Cite

Even though several works are available on the analysis of low-velocity impact (LVI) on fibre metal laminates (FMLs), there is still scope for a better understanding of the complexities associated with their analysis, making it an important area of research. Therefore, it is essential to compile and present the state-of-the-art research in this area to make the critical information available in one paper, facilitating future research. This paper thus covers the detailed review of the articles published on the LVI response of fibre metal laminates (FMLs) based on experimental, numerical and analytical approaches and the associated damage mechanisms under different impact conditions. The discussions can be mainly categorized into two broad groups, namely geometrical and material-based parameters, which significantly influence the structural response of FMLs upon impact. Additionally, the paper compares various numerical techniques reported to model the impact behaviour of FMLs, along with an overview of analytical models. Based on the manufacturing techniques and material constituents of FMLs, the paper discusses feasible methods of improving the performance of impact-prone structures. The exhaustive review of the literature finally concludes that there are scopes of investigating some of the important and relevant areas related to LVI of FMLs like the influence of relative mass of impactor and target and accurate determination of contact stiffness for accurate estimation of interface delamination. Investigating the LVI performance of advanced sandwich structures with FML facesheets is a potential area of research in this direction.

show abstract

Section: Effect Of Hybridisationmentioning

confidence: 99%

Low velocity impact on fibre metal laminates: A review

Kakati,

Chakraborty

2023

Journal of Composite Materials

View full text Add to dashboard Cite

show abstract

“…The delamination resistance of thick woven glass fiber reinforced polyester specimens with different ply orientations has been studied, and it was found that the ply angle changes the delamination resistance [14]. The impact on Kevlar/epoxy laminates has been analyzed under different orientations and thicknesses, and it was found that cross-ply laminates exhibited a superior ballistic resistance [15]. The transient response of delaminated smart composite laminates has been studied using an improved layerwise laminate theory [16].…”

Section: Introductionmentioning

confidence: 99%

Interlaminar prestressing reinforcement of epoxy/glass fiber composites

Kim

Huston

Lee

2018

Smart Mater. Struct.

View full text Add to dashboard Cite

This paper describes an innovative through-thickness fiber reinforcement technology that employs in situ shrinking fibers to provide supplemental strength-enhancing interlaminar prestresses for fiber-reinforced polymeric laminate structures. Interlaminar stitched fibers shrink and provide prestress. The shrinkage is heat-activated and timed to coincide with epoxy-curing steps. This new technology includes the design and fabrication of in situ shrinking fibers to improve the peel strength of epoxy/glass fiber composite layers. The epoxy specimens were shrink-reinforced under four different conditions; the fibers were activated when the epoxy matrix was cured for 4, 12, and 20 h, or without having any curing time beforehand. Then, the peel strengths and flexural strengths were compared. Also, in-plane tensile tests were conducted under identical conditions to investigate whether the through-thickness shrinking fibers affect the in-plane properties. The results indicated that the maximum improvement from the fiber activation was shown when the epoxy was cured for 4 h, while there was no significant effect from the in-plane tensile test.

show abstract