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Strain gradients and the strength of nanoporous gold

  • Rui Dou and Brian Derby (a1)


The very high strengths that have been reported for nanoporous gold may be related to strain gradients within the deforming porous microstructure. We present a mechanism-based model for the strength of nanoporous foams that is derived from conventional models for the deformation of macroscopic foams and now includes the influence of strain gradients. This model predicts that the strength of the ligaments within the nanoporous gold is proportional to the ligament diameter raised to the power −0.5. We have used the model to analyze experimental data for the strength of nanoporous gold and find excellent agreement with published data.


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Strain gradients and the strength of nanoporous gold

  • Rui Dou and Brian Derby (a1)


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