Static and dynamic mechanical properties of epoxy-based multi-constituent particulate composites

Jordan, Jennifer L.; White, Bradley; Spowart, Jonathan E.; Thadhani, Naresh N.; Richards, Dickinson W.

doi:10.1051/dymat/2009003

Cited by 3 publications

(2 citation statements)

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“…The binder was a thermoplastic, PMMA. These samples compare directly with the epoxy-based samples discussed in previous papers [1,16], with the exception that the PMMA based samples added a centerpoint to test for curvature. Table 1 shows the details of the factorial design for the PMMA-based samples; the epoxybased samples are numbered the same starting with MNML and excluding the centerpoint.…”

Section: Experimental Approachmentioning

confidence: 99%

Comparison of Mechanical Properties of Polymer-Based Multi-Phase Particulate Composites

Jordan¹,

Spowart²

2013

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Section: Experimental Approachmentioning

confidence: 99%

Comparison of Mechanical Properties of Polymer-Based Multi-Phase Particulate Composites

Jordan¹,

Spowart²

2013

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“…Some examples include light-weight armors that have superior load bearing capability under external impact of blast and energetic materials that have a high amount of energy release with reduced sensitivity to impact. Composites with reinforcing particles can be customized for desired mechanical properties with different matrix or filler materials, particle size, shape, or volume content, and loaded under any condition [1][2][3][4][5][6] . In addition to the benefit of customization, particulate composites can have improved fatigue resistance, corrosion resistance, and lower manufacturing costs, which make them very attractive when compared to their conventional metal counterparts.…”

Section: Introductionmentioning

confidence: 99%

Monitoring Strain Rate Effects on Nanocomposites using Piezospectroscopy

Durnberg

Jones

Rosas

et al. 2014

55th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference

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Alumina nanoparticles can be added to an epoxy matrix to improve material properties and also allow for the monitoring of stress within the composite. This stress monitoring ability is enabled by the photoluminescent characteristics of alumina. Known as the piezospectroscopic effect, the characteristic R-line peaks present in the emission spectrum of alumina shift with stress. The use of piezospectroscopy to study the effects of strain rates on nanocomposites is a novel approach. In this work, alumina-epoxy nanocomposites of 4.5, 13.6 and 29.7% were investigated under low compressive strain rates of 10 −4 s −1 , 10 −3 s −1 and 10 −2 s −1 . For each volume fraction and strain rate, the R1 peak shift with respect to applied uniaxial compressive stress was observed. Results illustrate the capability of alumina nanoparticles to act as diagnostic sensors to measure the stress-induced shifts of the spectral R-line peaks under dynamic loading conditions. The range of PS coefficients measured, correlates well in comparison with static experimental behavior for similar volume fractions. Results also show that as the strain rate increases, the failure of the sample was delayed to an increased stress value. Upon further analysis of the data, a general trend of increasing sensitivity of the PS coefficients with increasing strain rate was shown. Also, the dynamic PS coefficients measured here show an increased sensitivity to stress when compared to similar materials under static conditions. This information can be used to determine the time-dependent micro-scale stresses the nanoparticles sustain during composite loading.

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Comparison of Mechanical Properties of Polymer-Based Multi-phase Particulate Composites

Jordan

Spowart²

2012

Dynamic Behavior of Materials, Volume 1

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Static and dynamic mechanical properties of epoxy-based multi-constituent particulate composites

Cited by 3 publications

References 0 publications

Comparison of Mechanical Properties of Polymer-Based Multi-Phase Particulate Composites

Comparison of Mechanical Properties of Polymer-Based Multi-Phase Particulate Composites

Monitoring Strain Rate Effects on Nanocomposites using Piezospectroscopy

Comparison of Mechanical Properties of Polymer-Based Multi-phase Particulate Composites

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