The effect of curing agent on the dynamic tensile failure of an epoxy subjected to plate impact

Pepper, Jonathan E.; Huneault, Justin; Rahmat, Meysam; Ashrafi, Behnam; Petel, Oren E.

doi:10.1016/j.ijimpeng.2017.11.009

Cited by 17 publications

(3 citation statements)

References 41 publications

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“…EPON 828 is a two‐part room‐temperature cure epoxy with multiple alternatives for the hardener (cross‐linking or curing agent). The choice of the hardener determines some of the properties of the cured material . In this study Epikure 3223 hardener, which is an aliphatic amine curing agent, was used and the resin was prepared with the mix ratio of 100:12 resin to hardener.…”

Section: Specimen Preparationmentioning

confidence: 99%

Dynamic mechanical characterization of boron nitride nanotube—epoxy nanocomposites

et al. 2018

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Quasi-static and dynamic performances of an epoxy adhesive with and without Boron nitride nanotubes (BNNTs) are studied here. This article investigates the thin film shear and bulk tensile properties of EPON 828/Epikure 3223. In addition to the neat epoxy material, specimens with 1 and 2 wt% concentrations of BNNTs were also tested. Double-lap shear tests were performed at strain rates ranging from 4.0 × 10 −4 to 3.7 × 10 3 s −1 and it was found that neither the incorporation of BNNTs nor increasing the strain rate had a substantial effect on the shear properties of the thin adhesive layer. However, bulk tensile properties were seen to be sensitive to changes in strain rate. An increase in the strain rate from 5.5 × 10 −4 to 1.2 × 10 2 s −1 increased the tensile strength and Young's modulus by 39 and 113%, respectively; while the failure strain decreased by 49%. Additionally, the BNNT-modified tensile specimens demonstrated up to 7% increase in tensile strength, up to a 16% increase in modulus, and a 9% decrease in the strain at failure. These results along with electron micrographs showed that due to pull-out and bridging mechanisms of the nano-reinforcements, the BNNTs are more effective in normal stress dominant applications, as opposed to shear stress. POLYM. COMPOS.,

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Section: Specimen Preparationmentioning

confidence: 99%

Dynamic mechanical characterization of boron nitride nanotube—epoxy nanocomposites

et al. 2018

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“…What has been determined is that the spall strength is heavily influenced by the polymer's microstructure and interactions between the filler material and polymer matrix. In a study on the effect of curing agents on the spall strength of epoxy, Pepper et. al (2018) found that for similar strain rates the spall strength differed by approximately 44%.…”

Section: Spall In Particle Reinforced Polymer Matrix Compositesmentioning

confidence: 99%

“…al (2018) found that for similar strain rates the spall strength differed by approximately 44%. This increase in strength was attributed to the greater crosslinking of polymer chains in the epoxy with the higher spall strength [65]. The addition of particle reinforcement can also affect the microstructure.…”

Section: Spall In Particle Reinforced Polymer Matrix Compositesmentioning

confidence: 99%

A study on the Ballistic and Abrasive Response of Polyurea Coatings on Ballistic Fabrics

Oddy

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Explosions account for the majority of wounds sustained by soldiers on the battlefield. Due to difficult human factors and ergonomics, areas often left unarmoured are the extremities. Injuries to these areas accounted for approximately half of the total injuries sustained by coalition forces in Iraq and Afghanistan. Buried charges List of Tables 1CFR and percentage of injuries caused by blasts for WWII, Vietnam war,

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Synthesis and Manufacturing of Epoxy Composites

Mohan

Kanny

2021

Epoxy Composites

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The effect of curing agent on the dynamic tensile failure of an epoxy subjected to plate impact

Cited by 17 publications

References 41 publications

Dynamic mechanical characterization of boron nitride nanotube—epoxy nanocomposites

Dynamic mechanical characterization of boron nitride nanotube—epoxy nanocomposites

A study on the Ballistic and Abrasive Response of Polyurea Coatings on Ballistic Fabrics

Synthesis and Manufacturing of Epoxy Composites

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