Experimental and numerical investigations of low velocity impact behavior of high-performance fiber-reinforced cement based composite

Considering many potential applications of fiber reinforced metal laminates (FMLs) in sensitive structures, it is necessary to understand their mechanical behavior under impact loads. In this study, low velocity impact tests based on ASTM D7136 have been conducted on FMLs made of 1050 aluminum sheets and various types of fiber reinforced polymer (FRP) layers; namely E-Glass, Kevlar 49, and carbon T300 plain woven in the epoxy resin. Projectile energy, fiber type and the number of successive impacts are selected among important parameters that can affect the performance of FMLs. In particular, the effects of these parameters on the absorbed energy, contact force, front and rear face damage areas, central deflection and permanent deformation of FMLs have been investigated. For determining the damage area and central deflection of the specimens, an image processing method is adapted.

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Experimental and numerical investigations on the dynamic response of woven carbon fiber reinforced thick composite laminates under low-velocity impact

Composite Structures ◽

10.1016/j.compstruct.2021.114792 ◽

2021 ◽

pp. 114792

Author(s):

Xinxin Ge ◽

Pan Zhang ◽

Fei Zhao ◽

Ming Liu ◽

Jun Liu ◽

...

Keyword(s):

Carbon Fiber ◽

Dynamic Response ◽

Composite Laminates ◽

Low Velocity Impact ◽

Fiber Reinforced ◽

Low Velocity ◽

Velocity Impact ◽

Numerical Investigations ◽

Carbon Fiber Reinforced

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Response of ultra-high-performance fiber-reinforced concrete beams with continuous steel reinforcement subjected to low-velocity impact loading

Composite Structures ◽

10.1016/j.compstruct.2015.02.058 ◽

2015 ◽

Vol 126 ◽

pp. 233-245 ◽

Cited By ~ 80

Author(s):

Doo-Yeol Yoo ◽

Nemkumar Banthia ◽

Sung-Wook Kim ◽

Young-Soo Yoon

Keyword(s):

Reinforced Concrete ◽

Impact Loading ◽

High Performance ◽

Concrete Beams ◽

Fiber Reinforced Concrete ◽

Reinforced Concrete Beams ◽

Low Velocity Impact ◽

Low Velocity ◽

Velocity Impact ◽

High Performance Fiber

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Experimental and multiscale numerical investigations on low-velocity impact responses of syntactic foam composites reinforced with modified MWCNTs

Nanotechnology Reviews ◽

10.1515/ntrev-2021-0064 ◽

2021 ◽

Vol 10 (1) ◽

pp. 883-903

Author(s):

Yi Wang ◽

Jun Wang ◽

Jie Wang ◽

David Hui

Keyword(s):

Epoxy Resin ◽

Syntactic Foam ◽

Low Velocity Impact ◽

Impact Behavior ◽

Low Velocity ◽

Mwcnt Content ◽

Velocity Impact ◽

Numerical Investigations ◽

Impact Responses ◽

The Impact

Abstract This study focused on experimental and numerical investigations into the low-velocity impact behavior of epoxy resin matrix syntactic composites with embedded hollow glass microspheres (HGMs) and multiwalled carbon nanotubes (MWCNTs). The synergistic effects of HGMs and MWCNTs on the mechanical properties of epoxy resin composites were improved by applying amine and acid treatments to HGMs and MWCNTs, respectively. The influence of the MWCNT content and the applied impact energy on the impact responses and compression strength after the impact of these syntactic foam panel samples were discussed. The results indicated that modifying HGMs and MWCNTs contributed to improving the energy absorption and the strength retention factor (SRF) of these panels and the SRF increased with increased MWCNT content. Moreover, multiscale finite-element (FE) models were developed to simulate panel impact behavior, and modeling results were compared with experimental data. Then, the verified FE model was used to analyze the influence of CNT types (helical CNTs vs MWCNTs) and the diameter-to-thickness ratios of HGMs. This study provided a theoretical basis and design reference for a novel lightweight composite material subjected to low-velocity impact, which could be applied as a core material for sandwich structures in aerospace, marine engineering, transportation, and civil infrastructures.

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