The effect of stacking sequence of basalt and Kevlar fibers on the Charpy impact behavior of hybrid composites and fiber metal laminates

2020 ◽  
Vol 234 (16) ◽  
pp. 3270-3279
Author(s):  
Fardin Asghari Arpatappeh ◽  
Mehdi Abdollahi Azghan ◽  
Reza Eslami-Farsani
Keyword(s):  
Energy Absorption ◽  
Hybrid Composites ◽  
Charpy Impact ◽  
Epoxy Composites ◽  
Impact Behavior ◽  
Stacking Sequence ◽  
Stainless Steel 316L ◽  
Fiber Metal Laminates ◽  
Metal Plates ◽  
Fiber Metal

In this study, the effect of the arrangement of Kevlar and basalt fibers as the reinforcements on the Charpy impact behavior of hybrid epoxy composites was investigated. Also, the effect of adding metal plates (aluminum 2024-T3 and stainless steel 316L) into the basalt/ Kevlar fibers reinforced epoxy composites to fabricate fiber metal laminates under Charpy impact loads was studied. The fabricated fiber metal laminates in this research consisted of three metal plates and two groups of composite layers placed between them and were fabricated by the hand lay-up technique. Results indicated that the stacking sequence of fibers due to the hybridization effect caused a considerable improvement in the energy absorption value (99%) of hybrid composites, compared to specimens with one kind of fibers. Moreover, the effect of adding aluminum plates for the fabrication of fiber metal laminate was greater than adding steel plates. Considering the weight of composites, fiber metal laminates with aluminum and steel sheets, it was found that the average specific energy absorption value of aluminum fiber metal laminates was about 2.5 times higher than those of steel fiber metal laminates and composites.

Impact Behavior of Carbon Fiber/Epoxy Composites and Fiber Metal Laminates with Open Holes

2021 ◽  
Vol 22 (3) ◽  
pp. 772-785
Author(s):  
Carlos Rubio-González ◽  
Fabiola Chávez ◽  
Eduardo José-Trujillo ◽  
Julio A. Rodríguez-González ◽  
Alberto Ruiz
Keyword(s):  
Carbon Fiber ◽  
Epoxy Composites ◽  
Impact Behavior ◽  
Fiber Metal Laminates ◽  
Fiber Metal ◽  
Carbon Fiber Epoxy

Effect of Fiber Orientation and Stacking Sequence on Bending Properties of Fiber/Metal Laminates

2008 ◽  
Author(s):  
M. Sadighi ◽  
S. Dariushi
Keyword(s):  
Fiber Orientation ◽  
Bending Strength ◽  
Hybrid Composites ◽  
Glass Fibers ◽  
Thin Layers ◽  
Stacking Sequence ◽  
Fiber Metal Laminates ◽  
Metal Sheets ◽  
Fiber Metal ◽  
Fibers Orientation

Fiber metal laminates (FMLs) are hybrid composites consisting of alternating thin layers of metal sheets and fiber reinforced epoxy. In this work, the bending behavior of this attractive material is investigated. 9 sets of specimens were made with different fiber orientation. Also, the effect of stacking sequence is studied. Test results show that suitable layering and using aluminum layers in the back and front of specimens improve the bending strength. Statistical analysis of data shows that the most important parameter is glass fibers orientation in the lower glass/epoxy layer.

Effect of stacking sequence on the mechanical properties of pseudo-ductile thin-ply unidirectional carbon-basalt fibers/epoxy composites

2020 ◽  
pp. 152808372097840
Author(s):  
SM Saleh Mousavi-Bafrouyi ◽  
Reza Eslami-Farsani ◽  
Abdolreza Geranmayeh
Keyword(s):  
Carbon Fibers ◽  
Hybrid Composites ◽  
Charpy Impact ◽  
Epoxy Composites ◽  
Failure Behavior ◽  
Stacking Sequence ◽  
Basalt Fibers ◽  
Absorbed Energy ◽  
Impact Properties ◽  
Ductile Behavior

In this study, the flexural and impact properties of hybrid composites including the thin-ply unidirectional (UD) carbon fibers and basalt fabrics with different stacking sequences were investigated. Hybrid composites were fabricated by 2 layers of thin-ply UD carbon fibers and 6 layers of basalt fabrics in which the position of thin-ply UD carbon fibers was changed from the center to the outermost layers for different samples. Results indicated that by embedding the thin-ply UD carbon fibers in the laminates, both flexural and impact properties of the samples were considerably improved. The highest flexural strength (451 MPa) and modulus (37 GPa) values were achieved when the thin-ply UD carbon fibers were placed at the outermost layers; these values were respectively 24% and 44% higher than those of the sample without these fibers. However, results indicated that by placing the thin-ply UD carbon fibers at the center of samples, the failure behavior of samples was changed from catastrophic failure to progressive; and a pseudo-ductile behavior was observed in the mentioned samples. The highest pseudo-ductile strain value of 0.0054 was obtained by placing the thin-ply UD carbon fibers at the center of samples. Similar to the trend pseudo-ductility of samples, the flexural strain of samples improved by nearing the thin-ply UD carbon fibers to the center of samples. Similar to the flexural strain of samples, the results of Charpy impact tests indicated that by nearing the thin-ply UD carbon fibers to the outermost layers, the absorbed energy values decreased.

Influence of Stacking Sequence and Notch Angle on the Charpy Impact Behavior of Hybrid Composites

2016 ◽  
Vol 52 (4) ◽  
pp. 489-496 ◽  
Author(s):  
S. Behnia ◽  
V. Daghigh ◽  
K. Nikbin ◽  
A. Fereidoon ◽  
J. Ghorbani
Keyword(s):  
Hybrid Composites ◽  
Charpy Impact ◽  
Impact Behavior ◽  
Stacking Sequence ◽  
Notch Angle

scholarly journals Delamination Buckling and Crack Propagation Simulations in Fiber-Metal Laminates Using xFEM and Cohesive Elements

2018 ◽  
Vol 8 (12) ◽  
pp. 2440 ◽  
Author(s):  
Davide De Cicco ◽  
Farid Taheri
Keyword(s):  
Finite Element ◽  
Crack Propagation ◽  
Hybrid Composites ◽  
Cohesive Elements ◽  
Zone Method ◽  
Fiber Metal Laminates ◽  
Finite Element Software ◽  
Numerical Predictions ◽  
Delamination Buckling ◽  
Fiber Metal

Simulation of fracture in fiber-reinforced plastics (FRP) and hybrid composites is a challenging task. This paper investigates the potential of combining the extended finite element method (xFEM) and cohesive zone method (CZM), available through LS-DYNA commercial finite element software, for effectively modeling delamination buckling and crack propagation in fiber metal laminates (FML). The investigation includes modeling the response of the standard double cantilever beam test specimen, and delamination-buckling of a 3D-FML under axial impact loading. It is shown that the adopted approach could effectively simulate the complex state of crack propagation in such materials, which involves crack propagation within the adhesive layer along the interface, and its diversion from one interface to the other. The corroboration of the numerical predictions and actual experimental observations is also demonstrated. In addition, the limitations of these numerical methodologies are discussed.

Determination of Ballistic Limits of GLARE 5 Fiber-Metal Laminates: The Influences of Geometry, Thickness and Stacking Sequence

2011 ◽  
Author(s):  
A. Seyed Yaghoubi ◽  
B. Liaw
Keyword(s):  
Volume Fraction ◽  
Velocity Versus ◽  
Specimen Thickness ◽  
Stacking Sequence ◽  
Ballistic Limit ◽  
Fiber Metal Laminates ◽  
Limit Velocity ◽  
Fiber Metal ◽  
Ballistic Limit Velocity

In this paper, GLARE 5 fiber-metal laminates (FMLs) of two different geometries: 152.4mm×101.6mm (6″×4″) plate and 254mm×25.4mm (10″×1″) beam and with various thicknesses and stacking sequences were impacted by a 0.22 caliber bullet-shaped projectile using a high-speed gas gun. Velocities of the projectile along the ballistic trajectory were measured at different locations. For both geometries, the incident projectile impact velocity versus the residual velocity was plotted and numerically fitted according to the classical Lambert–Jonas equation for the determination of ballistic limit velocity, V50. The results showed that V50 varied in a parabolic trend with respect to the metal volume fraction (MVF) and the specimen thickness for both geometries. It was found that by changing the geometry from a plate to a beam, the ballistic limit velocity increased. On the other hand, changing the stacking sequence had a less pronounced effect on V50 for both geometries. The quasi-isotropic beam and plate specimens offered relatively higher ballistic limit velocities compared to other types of stacking sequences in their own geometrical groups. Furthermore, the cross-ply and unidirectional beam specimens showed relatively higher V50 compared to their plate counterparts. Experimental results showed that the ballistic limit was almost the same for the quasi-isotropic layup FMLs of both plate and beam geometries.

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