Low velocity impact properties of nanoparticulate syntactic foams

Woldesenbet, Eyassu

doi:10.1016/j.msea.2008.05.024

Cited by 26 publications

(22 citation statements)

References 22 publications

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“…As a result, sub‐critical flaws formed around the vicinity of the agglomerated microspheres, leading to the lowering of K 1c for M1 . Similar results were also observed for syntactic epoxy foams toughened with thermoplastic poly(ether ether ketone) and nano‐clay particles …”

Section: Physical and Mechanical Properties Of The Fabricated Macroposupporting

confidence: 85%

“…Similar results were also observed for syntactic epoxy foams toughened with thermoplastic poly(ether ether ketone) [18] and nano-clay particles. [19] Fractographic analysis was conducted on the fracture surfaces of single edge-notched bending test specimens to investigate the origin of the toughening and crack resistance mechanisms of hollow elastomeric microsphere-filled epoxy foams (see Figure 2d). Textured micro-flow was observed on the fracture surfaces of sample M0, indicating a brittle fracture process.…”

Section: Macroporous Polymersmentioning

confidence: 99%

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Enhancing the Fracture Resistance and Impact Toughness of Mechanically Frothed Epoxy Foams with Hollow Elastomeric Microspheres

Song

Tagarielli

Lee

2018

Macro Materials & Eng

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Nonporous elastomeric particles are often employed to improve the toughness of brittle epoxy foams but this also decreases their compressive strength and stiffness. Herein, a novel strategy utilizing hollow elastomeric microspheres as toughening agent for epoxy foams is presented. The addition of 0.5 wt.% hollow elastomeric microspheres into epoxy foam leads to a 15% increase in critical stress intensity factor (K 1c) to 0.38 MPa m0.5 and 33% increase in Charpy impact strength (acU ) to 1.05 kJ m−2, respectively, compared to unfilled epoxy foam (K 1c = 0.33 MPa m0.5 and acU = 0.79 kJ m−2). However, a further increase in the hollow elastomeric microsphere concentration to 1.0 wt.% leads to microsphere agglomeration, which reduces both K 1c and acU to 0.35 MPa m0.5 and 0.93 kJ m−2, respectively. Nevertheless, the added hollow elastomeric microspheres do not lead to a reduction in the quasi‐static compressive properties of the epoxy foams.

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Section: Physical and Mechanical Properties Of The Fabricated Macroposupporting

confidence: 85%

Section: Macroporous Polymersmentioning

confidence: 99%

Enhancing the Fracture Resistance and Impact Toughness of Mechanically Frothed Epoxy Foams with Hollow Elastomeric Microspheres

Song

Tagarielli

Lee

2018

Macro Materials & Eng

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show abstract

“…An enhancement in impact energy of both initiation and propagation are observed by the incorporation of crumb rubber, microfibre and nanoclay to the epoxy syntactic foam, due to the toughening effect of crumb rubber, strengthening effect and stress distribution of microfibre and nanoclay [24][25][26]. Woldesenbet [27] reported that the incorporation of nanoclay in syntactic foam has enhanced the maximum load and impact initiation energy of syntactic foams with higher (K46) and lower (S22) shell thickness.…”

Section: Introductionmentioning

confidence: 99%

Nanoclay reinforced thermoplastic toughened epoxy hybrid syntactic foam: Surface morphology, mechanical and thermo mechanical properties

Asif

Rao

Ninan

2010

Materials Science and Engineering: A

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“…The effect of nanoclay on the mechanical properties of epoxy syntactic foam composites has been studied by Peter and Woldesenbet [4]. Woldesenbet reported the low velocity impact response of nanoparticulate syntactic foams [5]. In nanoclay syntactic foams, flexural strength was observed to depend on the nanoclay volume fraction [6].…”

Section: Introductionmentioning

confidence: 99%

Effect of nanoclay on the mechanical, dynamic mechanical and thermal properties of cyanate ester syntactic foams

John

Nair

Ninan

2010

Materials Science and Engineering: A

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Low velocity impact properties of nanoparticulate syntactic foams

Cited by 26 publications

References 22 publications

Enhancing the Fracture Resistance and Impact Toughness of Mechanically Frothed Epoxy Foams with Hollow Elastomeric Microspheres

Enhancing the Fracture Resistance and Impact Toughness of Mechanically Frothed Epoxy Foams with Hollow Elastomeric Microspheres

Nanoclay reinforced thermoplastic toughened epoxy hybrid syntactic foam: Surface morphology, mechanical and thermo mechanical properties

Effect of nanoclay on the mechanical, dynamic mechanical and thermal properties of cyanate ester syntactic foams

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