Low-velocity impact fracture behaviour of impact-resistant polymer matrix composite laminates under mixed mode loading

Kusaka, Takayuki; Horikawa, Noriyo; Masuda, M.

doi:10.1051/jp4:2000953

Cited by 6 publications

(6 citation statements)

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“…However from a closer look at the literature, some trends becomes apparent. For thermosetting un-toughened epoxy composites, delamination fracture toughness has either an increase [12][13][14] or no significance [15,16] with increased loading rate. Whereas thermoplastic composites have shown strong negative strain rate dependency, with delamination fracture toughness decreasing with increase in loading rate [15,[17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Strain rate dependence of mode II delamination resistance in through thickness reinforced laminated composites

Yasaee

Mohamed

Pellegrino

et al. 2017

International Journal of Impact Engineering

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A thorough experimental procedure is presented in which the mode II delamination resistance of a laminated fibre reinforced plastic (FRP) composite with and without Zpins is characterised when subjected to increasing strain rates. Standard three-point End Notched Flexure (3ENF) specimens were subjected to increasing displacement loading rates from quasi-static (~0m/s) to high velocity impact (5m/s) using a range of test equipment including drop weight impact tower and a Modified Hopkinson Bar apparatus for dynamic three-point bending tests. The procedure outlined uses compliance based approach to calculate the fracture toughness which was shown to produce acceptable values of GIIC for all loading rates. Using detailed high resolution imaging relationships between delamination velocities, apparent fracture toughness, longitudinal and shear strain rates were measured and compared. Confirming behaviours observed in literature, the thermosetting brittle epoxy composite showed minor increase in GIIC with increase in strain rate. However, the Z-pinned specimens showed a significant increase in the apparent GIIC with loading rate. This highlights the need to consider the strain rate dependency of the Zpinned laminates when designing Z-pinned structures undergoing impact.

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Section: Introductionmentioning

confidence: 99%

Strain rate dependence of mode II delamination resistance in through thickness reinforced laminated composites

Yasaee

Mohamed

Pellegrino

et al. 2017

International Journal of Impact Engineering

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“…while the P4 composite which recorded the least fracture toughness values also had a fiber length of 2 in. Hence, not much can be Carbon/epoxy and carbon/PEEK 1 mm/min to 5 m/s Fracture toughness was found to be rate invariant Kusaka et al [42] Carbon/epoxy 10 Ϫ6 m/s to 10 m/s Fracture toughness decreased with increasing loading rate Cantwell et al [43] Carbon/PEEK 0.05 mm/min to 3 m/s Increase in fracture toughness with increasing loading rate Blyton [44] Carbon/epoxy and glass/ polypropylene…”

Section: Resultsmentioning

confidence: 99%

Fracture toughness in random‐chopped fiber‐reinforced composites and their strain rate dependence

Jacob

Starbuck

Fellers

et al. 2006

J of Applied Polymer Sci

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While many scientists have investigated the fracture toughness properties in various continuous fiberreinforced composite materials and their dependence on strain rate, there is absolutely no literature available on the fracture toughness properties of random-chopped fiber-reinforced composite materials and their strain rate dependence, which can find extensive use in a wide range of load-bearing engineering and industrial process applications primarily due to the low costs involved in their manufacture in addition to the ease of manufacture. Therefore, the primary goal of this manuscript is to determine the fracture toughness of various random-chopped carbon fiber composite material systems. The four different randomchopped carbon-reinforced epoxy composite material systems studied were P4, HexMC, CCS150, and CCS100. In addition, an attempt is made to investigate and characterize the strain rate effects on the fracture toughness of a randomchopped carbon fiber P4 composite.

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“…Kusaka et al34 used the Mixed Mode Flexure (MMF) specimen and Split Hopkinson Pressure Bar (SHPB) system to measure the mixed mode (I+II) fracture toughness of an interlayer toughened carbon fiber/epoxy composite system over a wide range of loading rates. The experimental results showed that the mixed mode fracture toughness was loading rate sensitive; the impact fracture toughness was about 30–38% lower than the static value.…”

Section: Literature Surveymentioning

confidence: 99%

The effect of loading rate on the fracture toughness of fiber reinforced polymer composites

Jacob

Starbuck

Fellers

et al. 2005

J of Applied Polymer Sci

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This article is a detailed review of the strain rate dependence of fracture toughness properties in polymer composite materials. An attempt is made to draw together all the strain rate studies done in the past and to elucidate the reasons given by the authors of the reviewed papers for the trends resulting from their studies to better understand the strain rate effects on the fracture toughness of fiber reinforced polymer composite materials. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 96: 899 -904, 2005

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Low-velocity impact fracture behaviour of impact-resistant polymer matrix composite laminates under mixed mode loading

Cited by 6 publications

References 0 publications

Strain rate dependence of mode II delamination resistance in through thickness reinforced laminated composites

Strain rate dependence of mode II delamination resistance in through thickness reinforced laminated composites

Fracture toughness in random‐chopped fiber‐reinforced composites and their strain rate dependence

The effect of loading rate on the fracture toughness of fiber reinforced polymer composites

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