Analysis of the fracture behavior of epoxy resins under impact conditions

d’Almeida, J.R.M.; Cella, N.

doi:10.1002/1097-4628(20000912)77:11<2486::aid-app18>3.0.co;2-k

J. Appl. Polym. Sci.

2000

DOI: 10.1002/1097-4628(20000912)77:11<2486::aid-app18>3.0.co;2-k

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Analysis of the fracture behavior of epoxy resins under impact conditions

J.R.M. d’Almeida

N. Cella

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Cited by 7 publications

References 23 publications

(18 reference statements)

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Impact response of epoxy systems containing short fibres and/or oxide particles as reinforcements

Kishore

Harimkar

Desai³

2004

Polymer International

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This work looks at the role played by constant levels of fibre and/or particles in epoxy matrices on impact responses during dynamic loading. In order to delineate the differing roles of reinforcements, hybrid composites containing different amounts of fibres and particles were prepared. Maximum loads and energies were used to distinguish the responses during and following impact. Scanning electron microscopy (SEM) was used to characterize the surface features before and after failure. Furthermore, such microscopic analyses were also employed to substantiate the deductions arrived at based on mechanical data analysis, which included the deduced parameter in the form of energy for propagation. The experimental results pointed to the fact that the total energy and load generally rise as the fibre content in the epoxy system increases. The hybrids, on the other hand, displayed a trend where the normalized load and the total energy increased as the fibre content in the hybrid was raised from 1 to 5 vol%. This was most evident when the differing levels of fillers and fibres were fixed at a total of 7 vol%. In addition, comparison was made between two sets of compositions of fibres and particles in the composites. The results showed that the higher fibre content in the hybrid allowed greater load bearing and energy absorption and the difference in recorded levels increased with higher fibre content in one hybrid set. Fractography studies indicated flatter surface features for systems with only particles added, whereas the ‘all‐fibre’ bearing systems displayed ‘fast‐fracture’ features resembling ‘river patterns’. Copyright © 2004 Society of Chemical Industry

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Impact response of epoxy systems containing short fibres and/or oxide particles as reinforcements

Kishore

Harimkar

Desai³

2004

Polymer International

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Characterization of an ABS‐modified epoxy system

Cano

Torres

Abad

et al. 2002

Polymer International

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In this work an epoxy system containing a diglycidyl ether of bisphenol A (DGEBA) and 1,3‐bis(aminomethyl)cyclohexane (1,3‐BAC) is modified with poly(acrylonitrile‐co‐butadiene‐co‐styrene) (ABS). Using dynamic mechanical analysis the glass transition temperatures and the associated activation energies are determined in the neat epoxy and some blends. The presence of ABS produces a constant diminution of the glass transition temperatures and increases the activation energies. The brittle character of the neat epoxy and the blends, compared with the ductile character of ABS, is studied using an instrumented impact pendulum. The shape of force–time curves and energies and data dispersion of each composition are analyzed. By using scanning electron microscopy it is possible to see various zones of different roughness and to distinguish the regions of tension and compression of Charpy impact fractured surfaces. The presence of a two phase‐morphology in the epoxy‐ABS blends is also shown. © 2002 Society of Chemical Industry

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Fracture toughness of thixotropic and room temperature cured epoxy-based adhesives for in situ timber bonding

Ahmad

Ansell

Smedley³

2010

International Journal of Adhesion and Adhesives

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Analysis of the fracture behavior of epoxy resins under impact conditions

Cited by 7 publications

References 23 publications

Impact response of epoxy systems containing short fibres and/or oxide particles as reinforcements

Impact response of epoxy systems containing short fibres and/or oxide particles as reinforcements

Characterization of an ABS‐modified epoxy system

Fracture toughness of thixotropic and room temperature cured epoxy-based adhesives for in situ timber bonding

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