The effect of aspect ratio on the fatigue life of short boron fiber reinforced composites

Lavengood, R. E.; Gulbransen, L. B.

doi:10.1002/pen.760090509

Cited by 29 publications

(6 citation statements)

References 5 publications

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“…In a study by Lavengood and Gulbransen on a short boron fiber epoxy composite [4], fatigue strength was found to increase with increased fiber length and reach a plateau at a particular fiber aspect ratio. An optimum nominal fiber length depending on fiber content and molding conditions can be used to improve fatigue performance.…”

Section: Introductionmentioning

confidence: 95%

Fatigue behavior and modeling of short fiber reinforced polymer composites including anisotropy and temperature effects

Mortazavian

Fatemi

2015

International Journal of Fatigue

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Section: Introductionmentioning

confidence: 95%

Fatigue behavior and modeling of short fiber reinforced polymer composites including anisotropy and temperature effects

Mortazavian

Fatemi

2015

International Journal of Fatigue

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“…The fiber-reinforced coatings studied in this paper were incorporated with milled carbon fibers, instead of typical long fibers to produce an isotropic response to the impacting particles, also providing a discontinuous path for impacting energies. However, the introduction of milled carbon fibers came with a tradeoff of using a lower aspect ratio (length/depth) of the fibers, and higher aspect ratios are indicated to have greater fatigue resistance . Generally, the erosion process on fiber-reinforced elastomeric composite seems to take place in two modes .…”

Section: Results and Discussionmentioning

confidence: 99%

“…However, the introduction of milled carbon fibers came with a tradeoff of using a lower aspect ratio (length/depth) of the fibers, and higher aspect ratios are indicated to have greater fatigue resistance. 42 Generally, the erosion process on fiber-reinforced elastomeric composite seems to take place in two modes. 25 First, the local resin removal results in exposure of fibers to the erosive environment, as shown in the 3D profile in Figure 1c.…”

Section: Surface Analysis After Erosionmentioning

confidence: 99%

Toward Exceptional Icephobicity with Chionophile-Inspired Durable Biomimetic Coatings

Memon

Focatiis

Choi

et al. 2021

ACS Appl. Polym. Mater.

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Liquid-infused polymeric surfaces have demonstrated promising icephobicity. However, the capability to maintain the icephobic performance after material damage has been a challenge, both in terms of conserving a smoother surface and the replenishment of the infused liquid. Cetacean skin possesses a microscopically smooth texture in the form of cells lubricated with lipid proteins and consists of structural fibers that ensure durability. Concerning the structure of cetacean skin, glycerol-infused fiber-reinforced polyurethane (GIFRP) coatings were proposed. Instead of hosting the lipid proteins, the coatings were infused with glycerol, a known cryoprotectant to induce the supercooling of water, a strategy inspired by wood frogs and red flat dark beetles to prevent freezing. The inclusion of glycerol delayed water droplet freezing duration by 659%, while negligible frost accumulated on the fabricated coatings during anti-icing tests. The reinforcement of fibers was effective and the surface damage was reduced by a factor of 4, compared to the pure polyurethane coatings after erosion impact. The incorporation of fibers has proven to be beneficial for infused-liquid replenishment and the slow-releasing capabilities of GIFRP coatings. Minimized surface deterioration and the continued presence of glycerol on GIFRP coatings demonstrated a small increase in ice adhesion from 0.22 to 0.77 kPa after the erosion tests, one of the lowest values reported in the literature after substantial surface damage. The concept inspired by cetacean skin and the cryoprotective features of chionophiles was instrumental in keeping the ice adhesion under 1 kPa after erosion impact.

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“…Based on this analysis, it was assumed that the wet pulverization of CWF L not only reduced the particle size, but also assisted in causing fibrillation on the WF particle surfaces, which ensured more interfacial interaction between wood flour and PP matrix. Moreover, fatigue life of composites increased with increasing particle aspect ratio, as did tensile strength [41].Hence, the fatigue test results of CWF L composites indicated that the wet pulverization of WF increased the particle aspect ratio of wood flour. This result was in good agreement with the measured aspect ratio values of CWF L .…”

Section: Fatigue Behavior Of Compositesmentioning

confidence: 92%

Fatigue Performance of Wet and Dry Pulverized Wood Flour Reinforced PP Composites

et al. 2019

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In this paper, we exclusively studied the effects of dry and wet pulverization of different wood flours on the fatigue performance of polypropylene (PP)/wood flour (WF) composites. Wood flours obtained from cypress and Scots pine trees were pulverized in both dry and wet conditions at two different mill-plate gaps, 200 µm and 350 µm, and were used as reinforcement in PP matrices. Master batches of PP with different types of pulverized WF were compounded before processing in an extruder. The PP/WF composites of initial WF were also prepared for comparison. The prepared composites were analyzed by tensile and fatigue tests. It was found that the tensile properties of wood/polypropylene composites were affected by the pulverization of WF. Fatigue test results displayed that wet pulverization of short cypress flour had a negative effect on the fatigue life of PP/WF composites, while wet pulverization of long cypress flour and pine flour had a positive effect on the fatigue life of PP/WF composites.

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The effect of aspect ratio on the fatigue life of short boron fiber reinforced composites

Cited by 29 publications

References 5 publications

Fatigue behavior and modeling of short fiber reinforced polymer composites including anisotropy and temperature effects

Fatigue behavior and modeling of short fiber reinforced polymer composites including anisotropy and temperature effects

Toward Exceptional Icephobicity with Chionophile-Inspired Durable Biomimetic Coatings

Fatigue Performance of Wet and Dry Pulverized Wood Flour Reinforced PP Composites

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