Inverse Hybrid Laminate for Lightweight Applications

Because of their high specific stiffness and strength, fiber reinforced plastics (FRP) are preferred lightweight materials. Recent developments show a growing industrial interest in the integration of thermoplastic FRP in complex structures for high volumes. However, there are still shortcomings for these materials concerning the insufficient energy absorption in case of failure and the limited opportunities available for the assembly with other components. Improvements in the crash performance can be achieved for instance with the selective reinforcement of the FRP structure with ductile metallic inserts. The present study shows the interlaminar shear strength and scanning electron microscope (SEM) samples of a novel load optimized hybrid composite consisting of a continuous fiber-reinforced thermoplastic matrix, in which a metal core is integrated.

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Influence of the Test Geometry on the Fatigue Behavior of Fiber Reinforced Plastics in Tension and Interlaminar Shear at RT and 77 K

Advances in Cryogenic Engineering Materials ◽

10.1007/978-1-4615-4293-3_23 ◽

2000 ◽

pp. 181-187 ◽

Cited By ~ 2

Author(s):

P. Rosenkranz ◽

K. Humer ◽

H. W. Weber

Keyword(s):

Fatigue Behavior ◽

Fiber Reinforced ◽

Reinforced Plastics ◽

Test Geometry ◽

Fiber Reinforced Plastics ◽

Interlaminar Shear

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Electrically conductive carbon fiber layers as lightning strike protection for non-conductive epoxy-based CFRP substrate

Journal of Composite Materials ◽

10.1177/0021998320935946 ◽

2020 ◽

Vol 54 (29) ◽

pp. 4547-4555 ◽

Cited By ~ 1

Author(s):

Siwat Manomaisantiphap ◽

Vipin Kumar ◽

Takao Okada ◽

Tomohiro Yokozeki

Keyword(s):

Carbon Fiber ◽

High Speed ◽

Lightning Strike ◽

Fiber Reinforced ◽

Electrically Conductive ◽

Lightning Strikes ◽

Carbon Fiber Reinforced Plastics ◽

Reinforced Plastics ◽

Fiber Reinforced Plastics ◽

Hybrid Laminate

A large amount of electrically conductive fillers is needed to enhance a Carbon Fiber Reinforced Plastics (CFRP) electrical conductivity enough to withstand lightning strikes of peak currents. However, such large alien constituents hamper the inherent good mechanical properties of CFRP structures. In this work, a solution has been proposed to retain both desired properties in a CFRP laminate. Layer-wise hybrid laminate has been demonstrated as a solution for lightning strike protection of Carbon Fiber Reinforced Plastics (CFRP). Top few layers of a hybrid laminate are prepared using electrically conductive polymer-based resin (CF/C-POLY) to provide effective dissipation of lightning current while epoxy-based CFRP substrate (CF/Epoxy) provides the main structural strength. An insulating adhesive layer is used to bond CF/C-POLY and CF/Epoxy to prepare the laminate. The hybrid laminates were tested for their effectiveness against lightning strikes. Laminates were struck by modified lightning waveform of component A with peak current of -14 kA and -40 kA. The performance of the laminates against lightning strike were evaluated using high speed camera, high-speed and thermal camera. It is found that CF/C-POLY layer successfully defended the main structural component i.e. CF/Epoxy from lightning direct damage.

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