Fracture in nanoporous gold: An integrated computational and experimental study

Nathan Beets, Joshua Stuckner, Mitsuhiro Murayama, Diana Farkas

研究成果: Contribution to journalArticle査読

11 被引用数 (Scopus)

抄録

We present simulation/experimental integrated study examining crack propagation in nanoporous gold. We utilized a simulation technique that combines continuum fracture mechanics with molecular dynamics. We applied this to a large atomistic digital sample of nanoporous gold to implement mode-1 crack propagation. Crack propagation tests were also conducted on an experimental sample, prepared via chemical dealloying and observed via in-situ TEM microscopy. We observed cracks in both samples propagating by the same mechanisms of sequential individual ligament failure. A series of nanowire computational deformation tests were also conducted to understand individual ligament behavior, and how this influences the overall sample fracture. This iterative direct experiment/simulation comparison provides new insight into the failure response of nanoporous gold.

本文言語英語
ページ(範囲)257-270
ページ数14
ジャーナルActa Materialia
185
DOI
出版ステータス出版済み - 2 15 2020
外部発表はい

All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • セラミックおよび複合材料
  • ポリマーおよびプラスチック
  • 金属および合金

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